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1

Pataky, Jeremy. "Possible Boats." The University of Montana, 2007. http://etd.lib.umt.edu/theses/available/etd-05072007-223912/.

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2

RASCH, LINNÉA. "Stolsunderrede – Nitra boats." Thesis, KTH, Produkt- och tjänstedesign, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233498.

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Syftet med detta projekt är att utveckla ett stolsunderrede justerbart i höjd- samt långskeppsled. Underredet är utvecklat till företaget Nitra boats och mer specifikt åt båt Nitra 29, en höghastighetsbåt som kan gå i cirka 100 knop vilken kommer få ett uppfällbart tak. Nitra vill även CE-märka synvinkeln, vilket ställer krav på antropometriska mått så att de passar den största delen av befolkningen. I dagsläget finns ingen kommersiell lösning på problemet. Under projektets gång gjordes en förstudie som visade på att många båtförare upplever smärta under båtfärd, till följd av de höga krafter som båtarna, och därmed passagerarna, utsätts för vid färd. Många av dessa förare får dessutom kroniska skador som följd. Stort fokus har således lagts på att utforma ett underrede som kan dämpa krafterna så att dessa skador inte uppkommer från början. Resultatet av undersökningen genererade i ett koncept som uppfyller kraven från Nitras håll och dessutom är dämpat, med hänsyn till passagerarna. Produkten är utformad för att estetiskt passa in i Nitras befintliga kollektion, med färg- och formval. Materialen är av sådan typ att de klarar av de väder och yttre förhållanden som kan påfresta det. Vidare har mycket fokus lagt på att dimensionera stolen så att den håller för de uppkommande krafterna, men inte vara för stort och tungt att det inte får plats i de erhållna dimensionerna. Projektet är avgränsat på så sätt att inga undersökningar på den befintliga båten gjorts, då detta inte varit möjligt, utan endast teoretiska beräkningar är gjorda, vilka då ger en uppfattning om hur stora krafterna egentligen blir. För att kunna göra detta har en rad antaganden och förenklingar gjorts.
The purpose of this project is to develop a chair base that is adjustable both height- and lengthwise. The base has been developed for the company Nitra boats and more specifically for the boat model Nitra 29, a high-speed boat which can go up to 100 knots and will soon have a foldable roof. Nitra also wants to CE-mark the angle of sight which will impose anthropometrical measures so that most of the population can use it. In today’s market, there are no solutions. During the project, a prestudy was done that showed that many boat drivers suffer from pain during the boat ride, a following of the high forces which also affects the passengers. Unfortunately this has resulted in many drivers receiving chronic diseases. Most of this work has therefore focused to form a chair base that can suppress the forces and stop the injuries from happening. The result of this work’s study generated a concept which lives up to the requirements from Nitra and suppresses the forces for the passenger’s own safety. The product is constructed to esthetically fit in Nitra’s current collection, with the right choice of colors and form. The materials have been selected to handle any weather and other outer threats. Moreover, lots of time was spent on dimensioning the chair so that it would not break accordingly to the upcoming forces. During this project, no specific tests were done on the Nitra 29 since it was not available. Therefore, only theoretical calculations – based on assumptions and simplifications - were made which gave a hint of how big the forces could be.
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Creasman, Pearce Paul. "The Cairo Dahshur boats." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4852.

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Excavations conducted in A.D. 1894 and 1895 by French archaeologist Jean- Jacques de Morgan at the funerary complex of the ancient Egyptian Middle Kingdom pharaoh Senwosret III on the plain of Dahshur revealed some unparalleled finds which included five or six small boats. These boats provide a unique opportunity in nautical archaeology—to study contemporaneous hulls. Today, only four of the "Dahshur boats" can be located with certainty; two are in the United States, one in the Carnegie Museum of Natural History in Pittsburgh and one in the Field Museum of Natural History in Chicago. The remaining two are on display in The Egyptian Museum, Cairo. Since their excavation these boats remained relatively inconspicuous until the mid-1980s when a study of the two hulls in the United States was conducted. However, the two boats in Cairo remained largely unpublished. This thesis combines personal observation and recording of the Cairo boats over two summers to reveal more unique characteristics of the hulls and will facilitate a future study of the group as a whole. Each boat is discussed individually and is further divided into its major components by order of construction.
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4

Hubbs, Travis. "“Civilizations without Boats”: Stories." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84222/.

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This collection consists of a critical preface and nine short stories. Extrapolating from the work and legacy of Michel Foucault, the preface theorizes a genre of “heterotopian fiction” as constitutive of a fundamentally ethical approach to narrative creativity, distinguishing its functional and methodological characteristics from works that privilege aesthetic, thematic, or technical artistry. The stories explore spaces of madness, alterity, incomprehensibility, and liminal experience. Collection includes the stories “Mexico,” “Civilizations without Boats,” The Widow’s Mother,” “Guys Like Us,” “Everything You’d Hoped It Would Be,” “A Concerned Friend,” “Crisis Hotline,” “Coast to Coast,” and “The Ghosts of Rich Men.”
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5

Chivers, Marc Leonard. "Shetland vernacular boats, 1500-2000." Thesis, University of the Highlands and Islands, 2017. https://pure.uhi.ac.uk/portal/en/studentthesis/shetland-vernacular-boats-15002000(6e129275-2698-4ea1-8784-3c669e9c49fc).html.

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This thesis provides a more accurate narrative of the origin and development of the Shetland vernacular boat in all its forms. Shetland, being treeless, imported boats from Norway, described as 'kits,' implying that they were quick and easy to assemble. New evidence suggests that this is incorrect; instead, boats-in-boards were rough-cut smuggled components that took longer and required a higher degree of boatbuilding skill to construct than previously acknowledged. This new evidence also establishes that boatbuilding began in Shetland c.1780, some 27 years earlier than formerly thought. Scholars espouse that Shetland boats were of lineal Norse descent. Analysis of late nineteenth century indigenous boats found some Norse features, but, when hull-forms, and methods of construction were compared with similar craft from Faroe and Norway it was discovered that Shetland boats diverged from the west Norwegian Oselvar (that retained a hull-form, and many construction features found in the Norse period) proving that indigenous boats were not of direct Norse descent; instead they were a unique Shetland product. Subsistence, ferrying, and recreational boat use had been neglected by previous researchers. This thesis corrects this imbalance, discovering that boat ownership was ubiquitous across all strata of society with subsistence and ferrying use remaining unaltered for several centuries. By c.1880 competitive boating had become popular. Although vernacular in origin, these new racing boats were influenced by construction methods from elsewhere. The new evidence suggests xiii that the continual development of the Maid Class made what was once an egalitarian sport into an elitist one, and, ironically, this contributed to the disappearance of the vernacular boat. Road transport superseded vernacular craft, exemplified by the introduction of the roll-on-roll-off ferries during the mid 1970s, and it was a combination of these factors that caused Shetlanders to drift away from their vernacular boat heritage.
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Rabby, Md Hasib Mahmud. "Tethered drone for rescue boats." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290819.

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Human has a great interest in aerial devices from very ancient days. The journey was started by kites and is still going on with the invention of airplane, helicopter, rocket,and many more. Drone is the latest field of scientist’s research which is a miniature of a helicopter. It has a great impact on military unit, navigation, and rescue mission. Inrecent days we can see its use in defense and attack strategies among the developed countries. There are many ways in which the use of drones in practical circumstances can be further explored. For example, in rescue missions, it is sometimes difficult for rescuers to reach the spot of the accident, which might be in the middle of a sea or an ocean. A navigation technology that will lead them towards the destination therefore can be of immense use. Rescue organizations like the Swedish Sea Rescue Society (SSRS) are in lack of such a technology that can assist them further in their mission. A tethered drone can act as navigation guidance for them to reach the destination very quickly. It will save time and fuel by reaching the destination via the shortest possible way. Its birds’ eye technology and sensor will broaden the chances of successful rescues. The current similar technologies have some drawbacks. An ordinary drone is generally powered by a battery and therefore has limited flight time. During the flight, it can record and sends a live video stream to a base station via the mobile network. The information collected is intended to be used to assist in crucial rescue decisions such as which boat to use, rescue crew size, what instruments to carry, and so forth. A tethered drone can fly longer than the average flight time. Due to being powered from the ground with wire, the drone gets constant power supply that does not depend on batteries with limited life. The main aim of this thesis is to design a system in which a drone can fly longer in a fixed position and altitude and to find suitable wire for wiring up and ensure the drone’s weight balance. Da-Jiang Innovations spark drone has been used for implementing the project as a model drone and the task is divided into few parts by testing process. Dronesflight time limitations have been overcome and longer flight time has been achieved. Also, because of testing, a few other limitations have been found.
Människan har alltid haft ett stort intresse för flygande objekt sedan långt tillbaka.Resan började med drakar och intresset pågår fortfarande med uppfinnigar somflygplan, helikopter, raket och många fler. Drönare är det senaste forskningsområdetsom är en miniatyr av en helikopter. Det har stor inverkan på militära enheter,navigering och räddningsuppdrag. Under de senaste dagarna kan vi se dess användningi försvars- och attackstrategier bland de utvecklade länderna.Det finns många sätt på vilket användningen av drönare under praktiska omständigheterkan utforskas ytterligare. Till exempel i räddningsuppdrag är det ibland svårt förräddare att nå platsen för olyckan, som till exempel kan vara mitt i ett hav.Navigeringsteknik som leder räddningstjänsten mot destinationen kan därför vara tillstor nytta. Räddningsorganisationer som Swedish Sea Rescue Society saknar sådanteknik som kan hjälpa dem ytterligare i deras uppdrag. En kabel bunden drönare kanfungera som navigeringsvägledare för dem att nå destinationen snabbare. Det spararbåde tid och bränsle genom att nå destinationen på kortast möjliga väg. Dessfågelperspektiv och sensor kommer att öka chanserna till framgångsrika räddningar.Den nuvarande liknande tekniken har vissa nackdelar. En vanlig drönare drivsvanligtvis av ett batteri och har därför begränsad flygtid. Under flygningen kan denspela in och skicka en live videoström till en basstation via mobilnätet. Den insamladeinformationen är avsedd att användas för att hjälpa till med viktiga räddningsbeslut somtill exempel vilken båt som ska användas, räddningsbesättningens storlek, vilkainstrument som ska bäras och så vidare.En bunden drönare kan flyga längre än den genomsnittliga flygtiden på grund av attden drivs från marken med kabel får drönaren konstant strömförsörjning som inte berorpå batterier med begränsad livslängd.Huvudsyftet med denna avhandling är att utforma ett system där en drönare kan flygalängre i en fast position och höjd och att hitta en lämplig ledare för kabeldragning ochsäkerställa drönarens viktbalans. Da-Jiang Innovations drönare Spark har använts föratt genomföra projektet som en model drönare och uppgiften är uppdelad i få delargenom testprocess. Drönarnas flygtidsbegränsningar har övervunnits och längre flygtidhar uppnåtts. Dessutom har ny begränsningar hittats efter flera tester har utförts.
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7

Damianidis, Kostas. "Vernacular boats and boatbuilding in Greece." Thesis, University of St Andrews, 1991. http://hdl.handle.net/10023/7116.

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This work presents a study of the vernacular boats of modern Greece. A new typology of boats is offered, and an account is given of tools and boatyard practice, design and construction techniques. Evidence for these subjects is drawn from field surveys, museum collections, iconographic studies, and interviews with old boatbuilders. Although most of the information presented comes from the first half of the 20th century, background information from the 18th and 19th centuries is also covered. This longer historical perspective is particularly important in making comparisons between 20th century practices and the boatbuilding techniques of the past. There is evidence for the existence of two main periods of technical change in the industry, namely, the late 18th century, when new methods such as lofting were introduced, and the late 19th century, when changes in the wider shipbuilding industry initiated a process of decline in vernacular boatbuilding. At the same time however, a number of older techniques, for example certain moulding methods, survived at least into the first part of the 20th century. This work offers new insights into the design methods involved in the control of hull-form during "skeletonfirst" boatbuilding from the last two hundred years. It also offers an analysis of the structural integrity and strength of vernacular boats and shows how the structure of boats has evolved across time to incorporate new techniques and changes in boat function.
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8

Damianidis, Kostas. "Vernacular boats and boatbuilding in Greece." Online version, 1989. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.316164.

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9

Philipson, Carl David. "Fast Patrol Boats i Peace Support Operations." Thesis, Försvarshögskolan, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-1713.

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Har storleken någon betydelse?Enligt den amerikanske marina militärteoretikern Milan N. Vego har den detvad avser fartyg vid mellanstatliga konflikter i kustnära farvatten.Denna uppsats syftar till att svara på frågan om samma förhållanden gäller vidPeace Support Operations (PSO).Uppsatsen analyserar Vegos tes, små ytstridsfartygs egenskaper, kraven vidPSO:s och de fall där små ytstridsenheter har verkat vid PSO:s.Slutligen värderas analyserade fakta och frågan besvaras.
The fast patrol boat (FPB) has played an important role in the cold war and inits aftermath. In recent years though, we have seen a development where theFPB:s are disappearing in nation after nation. The American naval theoristMilan N. Vego claims that the FPB:s have a natural role in naval operations innarrow seas during wartime. This essay is trying to answer the question ofwhether this is also true in peace support operations (PSO).Since wartime operations and PSO:s differ in both it’s goals and it’s methods Ihad to break down the methods in to functions. The functions are; anti surfacewarfare (ASuW), anti submarine warfare (ASW), anti air warfare (AAW), minecounter measurements (MCM), command and control (C²) and other functions.To answer the question I started to examine the abilities of the FPB:s, to findout it’s strengths and it’s weaknesses. In the next step I described and examinedthe demands in a PSO with emphasis on the naval tasks. I also tried toanticipate what future PSO:s will probably look like.My next step was to examine the three known cases where FPB:s haveparticipated in PSO:s. Each case was studied and described as a separate case.Finally I have tried to value to what extent the wartime functions have beenused in the studied PSO:s. I then discussed what functions I deemed wasnecessary in order to conduct the PSO:s. My next step was to estimate whetherthe studied cases corresponds to estimated future PSO:s.My conclusion is that the FPB:s are a valuable asset in PSO as well as inwartime operations. The reason for the decline of FPB:s in European navies hasnot been answered in this essay, nor the consequences. This is an interestingsubject for further investigation.
Avdelning: ALB - Slutet Mag 3 C-upps.Hylla: Upps. ChP 02-04
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Busch, Gregory C. "Connectivity for underway Coast Guard patrol boats." Thesis, Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8144.

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Approved for public release; distribution is unlimited
This thesis examines the US Coast Guard patrol boat's ability to effectively exchange operational data while underway. The patrol boat is currently unable to obtain tactical law enforcement information from the central Law Enforcement Information System 2 (LEIS 2) database while on patrol. LEIS 2 provides access to law enforcement information from Coast Guard, FBI, and state and local law enforcement agencies. Availability of this information will alert the boarding team of potentially dangerous situations and heighten their awareness during the boarding, allowing for a safer boarding. This thesis evaluates the current state of the patrol boat's communication system and recommends a solution to its current needs. Current and proposed satellite communication systems are evaluated using the Analytic Hierarchy Process (AHP). Pairwise comparisons are made of multiple decision criteria and the alternatives to obtain a recommended solution. The conclusion of this study is that the patrol boat's future requirements will far exceed the bandwidth available from current satellite systems. Broadband mobile communication systems such as Teledesic and Spaceway are currently under development and show promise. Until broadband service is available, Iridium should be adopted as the solution to the patrol boat's current needs.
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Dixon, Charlotte. "Sailing the monsoon winds in miniature : model boats as evidence for boat building technologies, cultures and collecting." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/422138/.

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Models of non-European boats are commonly found in museum collections in the UK and throughout the world. These objects are considerably understudied, rarely used in museum displays and at risk of disposal. In addition, there are several gaps in current understanding of traditional watercraft from the Indian Ocean, the region spanning from East Africa through to Western Australia. Using models of a range of boats from thirteen museum collections throughout the UK, this Collaborative Doctoral Award PhD research considers the value of these objects for both researchers and museums. This thesis explores the potential of models to help us to understand traditional boats and boat building practices; some of which no longer exist. It achieves this through the production of a catalogue and analysis of a wide range of models. Then, through the presentation of two case studies it starts to explore a number of ideas about the physical attributes of these objects and how representative they are of full-size vessels. In addition, the wider cultural processes and contexts of the models are explored. It considers ideas about collecting, miniaturisation and the iconic symbolism of watercraft. It is anticipated the outcome of this project will be the utilisation of models of boats from the Indian Ocean, and throughout the world, in future studies of traditional watercraft. It is also hoped that this research will help museums to re-evaluate the significance of these objects in their collections, and to use them in displays in the future to tell a range of narratives.
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Yip, Ming-wai Octavia. "Sampan Centre." Hong Kong : University of Hong Kong, 2002. http://sunzi.lib.hku.hk/hkuto/record.jsp?B25950113.

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13

Bower, Thomas Charles. "Fishing vessel optimization : a design tool." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25082.

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Rising fuel costs and decreased catch sizes have reduced the fishing vessel owners profit margin. This has caused the owners to try to find methods that reduce the costs of their operations. In this thesis a tool which can be used by fishing vessel designers, and operators, is developed for use at the preliminary ship design stage. It is used to determine the best fishing vessel parameters for a given operational scenario found on the West Coast of Canada.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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Otheguy, Mariano E. "Manufacture, repair and recycling of thermoplastic composite boats." Thesis, University of Newcastle Upon Tyne, 2010. http://hdl.handle.net/10443/889.

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The design and construction of boats using thermoplastic composites (TPCs) is an emerging industry derived from the advantages these materials offer. Short manufacturing cycle times, virtually infinite shelf life, increased toughness, no volatiles emission, and the ability to be re‐processed and recycled, lead to improved processes and open new and more sustainable manufacturing possibilities for boats and other structures. However, the manufacture, repair and actual recycling of TPCs still present a number of technical challenges. This thesis addresses the five most important of these challenges, from both the academic and industrial points of view. The manufacturing of TPC structures involves the impregnation of reinforcing fibres with melted resin. This process, known as consolidation, is still to be fully understood. In order to contribute to this understanding, a consolidation model based on existing and newly developed sub‐models was developed and applied to experimental data. The results obtained proved that the non‐isothermal consolidation of laminates of a thickness typical of boatbuilding, can be approached by applying this model locally on a discretised laminate, fitting well experimental data. The choice of a cost‐effective moulding material is one of the factors currently preventing the widespread use of TPCs in boatbuilding. The vacuum forming of TPCs requires moulds which have considerable strength, and allow high service temperatures and the shape freedom which is typical of boat moulds. A review of commercial and experimental materials and laboratory experimentation on a novel glass‐reinforced ceramic composite was carried out, showing that a range of metals and composites are useful for TPC‐capable moulds, and that a cost‐effective free‐shape mould capable of processing any TPC is achievable. After hull shell manufacturing stiffeners and other internal structure are often required. The manufacturing of such a reinforced and subdivided hull involves the use of a joining technology. Adhesive joining, widely used in thermosetting resin composite boats, cannot be easily used on TPCs due to their low energy surfaces. However, the re‐melting ability of thermoplastic resins enables the use of welding, fusion bonding and other joining methods involving molecular diffusion at the bond line. Experiments carried out on lap and T‐joints showed that vacuum‐assisted local heating can be used for structural assemblies such as reinforced boat hulls, obtaining strengths that are comparable to existing thermosetting designs. A TPC boat manufactured and assembled in such way would still require a suitable repair technique that provides a long product life. An emergency repair method capable to return the boat to the water in less than 24 hours without using any mould was devised and tested on a prototype TPC rigid inflatable boat. This was achieved by fusion bonding the edges of a pre‐manufactured flat panel to the hull. The flat panel adapted to the hull double curvature by means of vacuum pressure, delivering the required bond quality and strength. Finally, the disposal of a TPC boat must be addressed after the end of its service life. Current policies and innovative business thinking are leading companies into reusing and recycling instead of landfilling materials. While the mechanical recycling of TPCs, achieved by means of resin re‐melting, has been largely studied, the recycling of a real boat containing paint and core material raise questions on how these materials would affect the recyclate. An experimental study on the recycling of a TPC real boat was carried out to answer these questions, revealing that despite the deleterious effect of core and paint, the final properties of injection moulded samples were in the region of those of virgin materials.
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Yaakob, Omar bin. "Incorporating seakeeping in the design of fishing boats." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287812.

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Gölpınar, Serden Erkarslan Önder. "Comparative analysis of materials in recreational boat design: fiber reinforced plastic boat in serial production/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/endustriurunleritasarimi/T000430.pdf.

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Thesis (Master)--İzmir Institute of Technology,İzmir, 2005
Keywords: Recreational boat design, boat construction materials, FRP boat production methods. Includes bibliographical references (leaves. 77).
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De, Alwis Pahansen. "METHODS FOR SHOCK ANDVIBRATION EVALUATION APPLIEDON OFFSHORE POWER BOATS." Thesis, KTH, Marina system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162066.

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Vibration is a part of human life. People use vibrations in many useful ways but eventually human exposure to vibration has become an impediment to human life. Health problems due to exposure to vibration and shock are common among the crew operating high speed craft (HSC). Whole body vibration and repeated shocks have been identified as one of the major causes for health effects among HSC crew. Whole body vibration can affect health, comfort and performance depending on the magnitude, waveform and time of exposure. Therefore it is prudent the significance of consideration of human exposure to vibration and shock when deciding the operational envelope of an offshore HSC. This report addresses this question in two correlated parts where it identifies the interrelationship between the human exposure to vibration and shock and the operational envelope of HSC. The first part consists of a state of the art review on methods and measures for evaluation of workplaces exposed to vibrations containing multiple shocks and select a suitable method to be used in the second part. The second part is a case study of a Swedish Coast Guard HSC, KBV 476, which describes crew exposure to shock and vibration using the method selected from the state of the art review, and discusses the results in relation to the risks involved with the crew in the perspective of short and long term exposure. Nature of the vibration exposure and the corresponding risk involved is then discussed with respect to the operational envelope of the craft.
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Reid, Alexander. "Performance modelling and analysis of Olympic class sailing boats." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/2302.

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The work in this thesis is preceded by a Master of Research in Marine Technology project between September 2004 and October 2005. The project was supervised by Professor Martin Downie and was carried out with significant time present in the field, working closely with Olympic sailors from multiple different classes. This project was funded by UK Sport and considered a pilot project to investigate the feasibility of using data logging equipment with GPS in the marine Olympic environment. A series of prototype systems were engineered to meet the requirements specified by the Royal Yachting Association. The engineering and validation of the software and hardware formed a key part of the project to ensure that the results obtained were accurate and repeatable. This included software design within two different software platforms as well as embedded hardware developments. Significant testing and development were implemented in the laboratory as well as on the water during the beginning of the project and as a continuous background task throughout the project. Over eighty days were spent in the field developing and testing hardware and software as well as determining the optimum performance analysis methods. Data loggers were fitted to several Olympic class boats during the evaluation process to ascertain the performance of the data logging system as well as the performance of the boat and crew. Data was logged from the onboard GPS and accelerometers and analysed post training. Later in the project, wind information was also collected and fused together with the onboard data post training. The hypothesis was to demonstrate performance gains in the participating classes through the means of quantitative analysis. Prior to the project the performance analysis had been almost entirely qualitative. Through the course of the project various techniques were developed allowing quantitative performance analysis to supplement the efforts of the training group and coach. Key performance factors were determined by data analysis techniques developed during the project. One of the significant tools developed was a tacking performance analysis routine which analysed multiple different styles of tacks, calculating the distance lost with respect to wind strength and course length resulting in an important strategic tool. Other tools relating to starting performance and straight line speed were also developed in custom software allowing rapid analysis of the data to feed back to the teams in the debrief.
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Schick, Joshua J. "Firing Point: Patrol Torpedo Boats during World War II." ScholarWorks@UNO, 2012. http://scholarworks.uno.edu/td/1602.

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At the beginning of American involvement in the Second World War the United States Navy developed a new class of vessel that had a tremendous impact during World War II. This vessel was the Patrol Torpedo boat. Originally designed to conduct torpedo attacks on enemy surface vessels, the PT boat successfully adapted multiple roles in addition to being a torpedo attack craft. The versatility of the Patrol Torpedo boat during World War II serving in these various roles and as an element of the US Navy has not been recognized by recent scholarship. Using primary sources from the National Archives in College Park, Maryland, and secondary sources this paper demonstrates that the Patrol Torpedo boat was a weapon that exemplified economy of force. A small inexpensive naval vessel was able to replace larger ships and work with different elements of the fleet to deny the use of coastal waters to the enemy.
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Ding, Yi. "Guidelines for South African boatbuilding companies to market boats in China." Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/1709.

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Thesis (MTech (Marketing))--Cape Peninsula University of Technology, 2008
The opening ceremony of the 29th Olympic Games displayed a historical tapestry of Chinese culture to the world. At the same time, the 2008 Games presented new opportunities for Chinese people to experience aspects of the outside world, which may have previously been closed to them. Aquatic sport is one such example, especially recreational sailing and yachting, which are novel concepts within Chinese society. Given China’s rapid economic growth, this burgeoning market has potential for South African exporters, including the recreational marine sector. However, South African manufacturers have not promoted their products, many of which are of a high standard, in this market. Are there barriers, which may prevent successful exports of marine products to China? Would a deeper understanding of China’s unique business culture assist the local boatbuilding industry to successfully present their products in China? The purpose of this study is to assist South African boat builders to expand their business operations in China by developing guidelines for marketing strategy formulation. The entire research study shows that there are indeed opportunities to market boats in China, while the market is mainly located in coastal cities. The research reviewed South African trade with China, successful entry of South African companies into the Chinese market, and shows that potential does exist for penetration of the Chinese market by South African marine industries. Based on a further review of the internal marketing environment in China, it is established that a unique feature of Chinese business culture, termed Guanxi, might be a major barrier for penetration of the Chinese boat market by the South African marine industry.
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21

Köpke, Markus. "A passive suspension system for a hydrofoil supported catamaran /." Link to the online version, 2008. http://hdl.handle.net/10019/860.

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22

Giraldo, Herrera César Enrique. "Sweet dreams rocking Viking boats : biocultural animic perspectivism through Nordic seamanship." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=195798.

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This thesis explores animic and perspectivist notions in the context of Nordic Seamanship with a biocultural framework. It examines the history, cosmologies, terminology, practices, physiology and phenomenology of Nordic crafts and arts of boat building, rope-making, seafaring and fishing. Rope-making, its molecular basis and the social organization in a boat reveal the way in which physical and social bodies coalesce in the harmonies of the differing intentionalities of their constituents, forming symmetric hierarchical structures, which are at the basis of Nordic egalitarian and individualistic society. Through the enskillment in seafaring and fishing, we explore the perspectival transformations involved in nausea; the development of sea-legs (the attunement to the rhythms of the sea), fishiness (empathy with the fish) and the meiths (a system navigation, perception and theorization of the coastal environment), showing the role of normal microbial biota in the perception and interactions with the environment. Based on the experience at sea, it is suggested that the ontologies developed through the interactions of seamanship constituted a cosmology that influenced the development of the Medieval Perspectivist theories in Natural Philosophy, Norse poetry and hermeneutics, which were means of secularization of pagan knowledge in the Nordic conversion to Christianity. Elaborating on some aspects of medieval perspectivist theory through their comparison with Amerindian animic theories and the biology of the eye it is suggested that its morphology entails an entoptic (inner-vision) microscopy, affording a means of visual perception and interaction with microbial entities. Finally, with the aid of a Treponema pallidum, a transatlantic traveller with a copious Amerindian mythology, it is shown that animic notions about spirits, dwarves and gods are coherent with an ecological physiology that takes into account microbial sociality and their role, both in health and in disease, in our metabolism, perception and relations with the environment in particular ecological communities. In so doing, it demonstrates that animic perspectivist ontologies are compatible with a naturalism that takes into account intentionality as a generalized physical property constituent of beings and things, and therefore sociality as generalized characteristic of the interactions between beings/things in the environment.
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23

Falck, Anna-Maria. "Seglets introduktion i Skandinavien : En undersökning kring indikationer för seglets uppkomst under bronsåldern." Thesis, Uppsala universitet, Arkeologi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323844.

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The first image depicted of sail are in Egypt and dated to the late fourth millennium BC. Around the third millennium BC the introduction of sail began in the eastern Mediterranean.Some researchers do not believe that sail have existed in Scandinavia until about 8th century AD. The reason for this is because of the lack of archaeological evidence. The question that may be asked is whether it is reasonable that it took about 3000-3500 years for the sail to getto Scandinavia from the eastern Mediterranean? The purpose of this essay is to examine and describe which indications that are available to support the occurrence of the sail in Scandinavia during the Bronze Age. Indications will be studied in trade contacts, rock art boats, and boat constructions.The study is relevant to gain a greater understanding of the Scandinavia´s movements on the open water, trade contacts and boat construction during the Bronze Age.The result reveals that Scandinavia probably had an indirect contact with areas that used sails. Indications for contact with areas in Europe are shown by imports and exports of amber,metals, artefacts and similarities between rock carvings depicting ships. Some of Scandinavia´s rock art boats seem to show attributes such as mast and sails, but it is difficult to get an understanding by looking at the pictures only. One idea is that a change is required in the keel of the boats for sailing. The result reveals that an alternative to keel may have been double steering oars. From an experimental archaeological survey of Bengtsson & Bengtsson (2011), it seems that Scandinavian Bronze Age boats have managed to get sailed.
Den första avbilden av segel finns i Egypten och dateras till ca år 4000 f.Kr. Runt ca år 3000f.Kr. uppkommer segel i östra Medelhavsområdet, Persiska viken och möjligen Indien. I Skandinavien anser en del forskare att segel inte har existerat förrän ca 700 år e.Kr., då inga arkeologiska bevis för mast eller segel förekommer. Frågan som kan ställas är om det är rimligt att seglet har tagit omkring 3000-3500 år att nå Skandinavien från östra Medelhavsområdet? Syftet med studien är att undersöka och redogöra för vilka indikationer som finns för att seglet kan ha förekommit i Skandinavien under bronsåldern. Frågeställningarna har varit: Var Skandinavien i kontakt med områden som nyttjade segel eller hade kunskap om dem under bronsåldern? Vilka belägg finns för att kontakter med områden i Europa harförekommit? Kan hällbilderna från bronsåldern i Skandinavien tolkas ha mast och segel? Vad krävs i en båtkonstruktion för att den skall kunna segla? Har skandinaviska bronsåldersbåtar haft en båtkonstruktion som klarat av segling? Teorin som antagits i föreliggande uppsats har varit Bengtsson & Bengtssons (2011) som antar att segel kan ha uppkommit tidigare i Skandinavien, möjligtvis redan under bronsåldern. Studien utfördes genom en litteraturöversikt och metoden var empirisk och komperativ då forskares åsikter, antaganden och resultat från deras undersökningar jämfördes och presenterades utifrån frågeställningarnai analysen. En avgränsning har funnits genom att undersökningen främst berört områden därmast och segel kan tolkas ha förekommit samt på platser där tidigare forskning behandlat Skandinaviens hällristningar. Ytterligare avgränsning har funnits genom att en ingåendebeskrivning av hur båtkonstruktionen hos bronsåldersbåtarna såg ut, ej har angivits i detalj, utan i stället har de funktioner som ansetts viktiga för en möjlig introduktion av segel i Skandinavien främst undersökts. Resultatet visar utifrån analysen och diskussionen kring frågeställningarna att indikationerframkommer för att möjligheten finns för att segel förekom i Skandinavien under bronsåldern.
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Chicken, S. H. "Conceptual design methodologies for waterborne and amphibious aircraft." Thesis, Cranfield University, 1999. http://dspace.lib.cranfield.ac.uk/handle/1826/9945.

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This study is laid out in 8 self-explanatory sections. The Introduction sets the scene for the thesis by describing the reasoning behind the study, defines terms and introduces the reader to the markets for amphibious aircraft which drive the design requirements. An overall floatplane design methodology is developed. The advantages and disadvantages of the 2 practical float configurations are identified, which result in a basic configuration choice methodology. A method of initially estimating float dimensions and mass for a required displacement is developed from existing references and the aircraft and float databases. Initial float support structure design solutions are proposed based, again, on the information from the databases. A method of positioning the resultant float and structure configuration relative to the existing land-based aircraft centre of gravity is then developed using existing guidance on lateral and longitudinal water-borne static stability and the aircraft database. Guidance on the initial purchase price of floats is gained from a study of commercially available items. The changes in performance due to fitting floats to a conventional aircraft are studied along with a drag comparison study of the main configurations. The work on flyingboats develops an overall flyingboat design methodology which identifies key areas where design methods are required. These methods are developed leading to initial configuration choice methodologies based on a series of generalised mass, configuration and role classifications. Having decided on the overall configuration, tools are developed to choose the method of providing on-water lateral stability and to complete the initial sizing of that choice. A method of estimating initial planing bottom dimensions is developed along with step position and configuration. Tools to estimate the mass of flyingboat-specific items are developed including planing bottom structure and the choice of lateral stability method. Knowing the mass and configuration of the flyingboat allows spray estimation and detailed on-water static stability calculations to be completed to check the acceptability of the initial configuration and dimensions. Performance estimation methods including take-off and landing, aerodynamic drag and on-water dynamic stability are proposed. Logistic support infrastructure, safety and water loading are common to both floatplanes and flyingboats and these are discussed in a separate section, along with a method of allocating values to amphibious aircraft design attributes to measure the success of the design. The methodologies are then used to design 5 floatplanes and 5 flyingboats based on a crosssection of relevant aircraft specification types. This use of the methodologies illustrates that the concept of a linked series of tools to complete the rapid conceptual design of an amphibious aircraft has been successfully achieved. A discussion chapter summarises the key discoveries in each of then former chapters and a conclusion details how the study's aim to develop integrated conceptual design methodologies for waterborne and amphibious aircraft has been successfully achieved. The study's contribution to knowledge, which includes mass, sizing, performance and cost equations for both floatplanes and flyingboats, are also detailed. A list of further work is included which concentrates on the need for further empirical information to increase confidence in the methodologies. A comprehensive bibliography of relevant texts is included.
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Miller, Gregory A. "An investigation into the probable effects of the legalization of riverboat gambling in Pennsylvania." Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1995. http://www.kutztown.edu/library/services/remote_access.asp.

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26

Kearns, Sean D. "Analysis and mitigation of mechanical shock effects on high speed planing boats." Thesis, Springfield, Va. : Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA395308.

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Thesis (M.S. in Naval Architecture and Marine Engineering and M.S. in Mechanical Engineering) Massachusetts Institute of Technology, Sept. 2001.
Includes bibliographical references (leafs 90-92). Also Available online.
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27

Lundquist, David Jeffrey. "Behavior and movement of southern right whales: effects of boats and swimmers." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5909.

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Guidelines for sustainable swim-with tourism for large whales are not welldeveloped, as researchers have focused on delphinids. Nations that signed the Convention on Biological Diversity at the Earth Summit in Rio de Janeiro in 1992 are obligated to consider sustainable use principles when allowing new ecotourism activities, yet the fast-growing worldwide swim-with-whales industry is lacking the research needed to create successful management guidelines that can be implemented by local communities. From September to November of 2005 and July to October of 2006, I collected movement and behavioral state data for southern right whales in proximity of swimmers at Península Valdés, Argentina. Whales were observed before, during, and after a series of directed interactions with swimmers. I quantified the behavioral and movement effects relative to group composition of whales (mother/calf pairs, juveniles or adult/mixed groups) and activity level of swimmers. Group composition had a significant effect on the response of whales to swimmers. Swimmer activity level did not substantially affect the reaction of whales. Resting and socializing activities significantly decreased and traveling activities significantly increased when boats approached and when swimmers entered the water. Resting and socializing bout length in the presence of swimmers decreased to less than a third of the length of bouts when swimmers were not present. Whales swam faster, reoriented more often, and followed a less linear path during interactions. Effects were greater for mother/calf pairs than juveniles, while mixed adult/juvenile groups showed no significant changes in behavior or movement. The initial reaction of whales to the approach of the boat and the entry of swimmers into the water was a good predictor of the magnitude of effects on the behavior and movement patterns of the whale. Increased levels of activity are a concern for the whales that are resting and not feeding in this area. To provide quality resource management guidelines for this activity, additional research is needed to determine long-term effects of boat and swimmer activities on the behavior of whales. It is also important to obtain energetic data for right whales to determine the magnitude of impacts.
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28

Bjurenborg, Amanda. "E-Sea Power : The Design and Standardization of Chargers for Electric Boats." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-67600.

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The current concerns about global warming are increasing the demands for electric vehicles (Ou- chi, Bando, Kodani, Hirata & Mubin, 2012).With the increasing demands, electric boats have now come into focus (Sierzchula, 2014). However, there is yet to be developed standards for charging of electric boats.This is where this thesis project comes in, as this thesis is a part of the E-Sea Power project,which is a project to develop a new and safe standard for charging of electric boats.The thesis project was completed at the company No Picnic in Stockholm, through the work of my final master degree course, in the education of Industrial Design Engineering, taught at Luleå Uni- versity of Technology. The objective of the thesis project was to provide a basis for the facilitation of the standardization of chargers for boats, with the possibility of full-scale tests. Where the final aim of the project was to develop both a normal charger standard and a quick charger that is to be mounted in a harbor, being able to utilize the harbor’s own electricity grid.Where in this context, a normal charger is a slower charger that charges with the users own cord and where a quick charger is a fast charger which has a built-in charger cord and handle. The project was divided into need, design, and function to make it structured and easy to follow, going through the design phases Immersion, Ideation, and Implementation.Throughout the project the current state was firsts analyzed, going on to several brainstorming and evaluation techniques and then ending with the building of final CAD prototypes, of both a normal charger and a quick charger, through the use of the software Solidworks, Keyshot, Photoshop and Maxwell.The projects focus has been on finding creative and ergonomic new solutions, with good user experience and accessibility. The final result of the project is two modular new chargers, with belonging to the same product family. Both a quick charger, which has had the thesis main focus and a normal charger, which has also been developed. The quick charger is a tall charging post that has a built-in lamp consisting of four fluorescent lamps and a, on the outside hanging, charging cord mounted at the top.The charger has two component houses which house necessary components. One that houses the CCS charger female and infor- mation label and one that houses the screen, IR sensor and emergency stop. The main feature of the final quick charger is its charging arm, which bends down with a hidden hinge, enabling the required total reach of 5 meters, while helping lift the charging cord for the user and giving the best possible light were the user is. The normal charger is also a charging post with the same type of house as the quick charger. How- ever the charger post is much shorter and it has only one house, which houses two Type 2 females instead of one CCS female.The normal charger also has a different lamp consisting of small LEDs, so that the user is not disturbed by its brightness at its lower hight, but still gaining enough light during use, where the surrounding light is lacking.
Den nuvarande oron för global uppvärmning ökar kraven på el-fordon (Ouchi, Bando, Kodani, Hirata & Mubin, 2012). Med de ökande kraven har nu de elektriska båtarna kommit i fokus (Sier- zchula, 2014). Det har emellertid ännu inte utvecklats standarder för laddning av elektriska båtar. Det är här det här master projektet kommer in, då detta projekt ingår i E-Sea Power-projektet, som är ett projekt för att utveckla en ny och säker standard för laddning av elektriska båtar. Projektet slutfördes på företaget No Picnic i Stockholm, genom mitt examensarbete, vid utbildningen civil- ingenjörsutbildningen i teknisk design, undervisad vid Luleå tekniska universitet. Målet med projektet var att skapa en grund för att underlätta standardiseringen av laddare för båtar, med möjlighet till fullskaliga tester. Där det slutliga målet med projektet var att utveckla både en normalladdare standard och en snabbladdare som ska monteras i en hamn och kunna utnyttja ham- nens egna elnät. I det här sammanhanget är en normalladdare en långsammare laddare som laddar med användarens egen kabel och en snabbladdare är en snabb laddare som har en egen inbyggd kabel med ett handtag. Projektet var uppdelat i behov, design och funktion för att göra det strukturerat och lätt att följa. Det gick även igenom designfaserna Immersion, Ideation och Implementation. Hela projektet bör- jade med analyseradet av det nuvarande tillståndet och fortsatte sedan med diverse brainstorming och utvärderingstekniker och slutade sedan med byggandet av slutliga CAD-prototyper, både av en normalladdare och en snabbladdare, med hjälp av programmen Solidworks, Keyshot, Photoshop och Maxwell. Projektets fokus har varit att hitta kreativa och ergonomiska nya lösningar med bra användarupplevelse och tillgänglighet. Det slutliga resultatet av projektet är två modulära nya laddare, som tillhör samma produktfamilj. Både en snabbladdare, som har haft huvudfokus och en normalladdare, som också har utvecklats. Snabbladdaren är en hög laddningsstolpe som har en inbyggd lampa som består av fyra lysrörslam- por och en utvändigt hängande laddningssladd monterad på toppen. Laddaren har två komponent- hus ett som rymmer CCS laddarens hona och informationsetikett och ett som rymmer skärmen, IR sensorn och nödstoppet. Huvudfunktionen hos den slutliga snabbladdaren är dess laddarm som böjer sig ned med ett dolt gångjärn, vilket möjliggör den totala räckvidden på 5 meter, samtidigt som den hjälper till att lyfta laddkabeln åt användaren och ger bästa möjliga ljus där användaren är. Den vanliga laddaren är också en laddstolpe med samma typ av hus som snabbladdaren. Laddstolpen är dock mycket kortare och den har bara ett hus, som rymmer två Type 2-honor i stället för en CCS-hona. Normalladdaren har också en annan lampa än snabbladdaren som består av små lysdio- der, så att användaren inte störs av ljusstyrkan vid dess lägre placering, men fortfarande får tillräckligt med ljus vid användning, där det omgivande ljuset är bristande.
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29

Kearns, Sean D. (Sean David) 1968. "Analysis and mitigation of mechanical shock effects on high speed planing boats." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8235.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2001.
Includes bibliographical references (p. 90-92).
United States Special Forces use high-speed planing boats in the performance of their missions. Operation of these boats, particularly in rough seas, exposes the occupants to severe mechanical shock exposure that has been linked to significant increase in the rates of acute and chronic injury. While many government and civilian organizations have researched various aspects of this problem over the past decade or more, no effective solution has yet been implemented in the fleet. In response to this problem, the Commander Naval Special Warfare Command in San Diego, CA forwarded a request to MIT's Ocean Engineering Department calling for a study of the problem. The object of this thesis is to conduct a comprehensive analysis of the problem, to research methods by which the problem can be mitigated, and to develop and validate a method for laboratory design, test, and evaluation, of shock mitigation systems. First, a theoretical and empirical study is conducted of the hydrodynamic interaction between a boat's hull and the seaway, and how this interaction results in the generation of mechanical shock. Actual acceleration data is obtained from the boats while underway in typical operating conditions, and other similar data is obtained from previous studies. Second, the mechanisms by which exposure to mechanical shock and vibration causes acute and chronic injury are investigated. Past human and animal testing is reviewed, along with information on the transmissibility and mechanical impedance of the human body. Information of this type, along with other injury data compilation studies, have contributed to existing injury prediction. Third, a study and is made of the methods by which mechanical shock exposure on high-speed boats can be mitigated. Interfaces (e.g.- hull-seaway) are identified where shock mitigation can be achieved, and existing or conceptual shock mitigation systems are discussed. Additionally, operational methods (such as training) of reducing shock exposure effects are discussed. Finally, a laboratory drop table apparatus is fabricated for use in the design, test and evaluation of shock mitigation systems. This test apparatus is validated by successful reproduction of shock events such as those experienced on high-speed boats, as well as by excellent repeatability and controllability.
by Sean D. Kearns.
S.M.
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30

Fitzpatrick, Brian D. "A Multivariable Statistical Approach to Managing United States Coast Guard Small Boats." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1797.

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The Coast Guard has developed several systems to measure the performance of its engineering and logistics organizations. The development of these measures is based upon the need to show where and how the organization meets the American taxpayer’s needs. The use of multivariable regressions and determining the statistical distributions of the variables will show the adequacy of the measures and processes currently used. They will also determine a better way to measure the performance of the Coast Guard Small Boat Fleet. This research will analyze the 47 Motor Life Boat and 25 Response Boat-Small data from fiscal year 2011 to 2013. The focus will be on improving the measure used by the engineering and systems managers of the Coast Guard to manage assets and resources, as well as making recommendations on how to improve the processes involved in managing a robust engineering and logistics system.
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31

Ransley, Jessica. "The backwater boats of Kerala : identity, place and the world of Munruthuruthu." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/361340/.

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Ahlstrand, Felicia, and Elin Lindbergh. "Methods to Predict Hull Resistance in the Process of Designing Electric Boats." Thesis, KTH, Marina system, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280565.

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Combustion engines in boats cause several environmental problems, such as greenhouse gas emissions and acidication of oceans. Most of these problems can be reduced by replacing the combustion engines with electric boats. The limited range is one of the main constraints for electric boats, and in order to decrease the energy consumption, applicable resistance prediction methods are necessary in the hull design process. X Shore, which is a start-up company in the electric boat sector, lacks a systematic way of predicting resistance in an early design phase. In this study, four well-known methods - CFD, Holtrop & Mennen, the Savitsky method and model test - have been applied in order to predict resistance for a test hull. The study is limited to bare hull resistance and calm water conditions. CFD simulations are applied using the software ANSYS FLUENT 19:0. The simulations were based on the Reynolds Average Navier-Stokes equations with SST k-ω as turbulence model together with the volume of fluid method describing the two-phased ow of both water and air surrounding the hull. The semi-empirical methods, Holtrop & Mennen and the Savitsky method, are applied through a program in Python 3, developed by the authors. The results from each method have been compared and since model tests have been conducted outside of this study, the model test results will serve as reference. To evaluate the methods, a number of evaluation criteria are identied and evaluated through a Pugh Matrix, a systems engineering tool. Holtrop & Mennen predicts the resistance with low accuracy and consistency, and the error varies between 2:2% and 70:6%. The CFD simulations result in acceptable resistance predictions with good precision for the speeds 4 - 6 knots, with an average deviation of the absolute values as12:28% which is slightly higher than the errors found in previous studies. However, the method shows inconsistency for the higher speeds where the deviation varies between 1:77% and - 43:39%. The Savitsky method predicts accurate results with good precision for planing speeds, but also for the speeds 7 and 8 knots. The method is under-predicting the resistance for all speeds except for 7 knots, where the total resistance is 10:7% higher than for model tests. In the speed range 8 - 32 knots, the average error is an under-estimation of 17:58%. Furthermore, the trim angles predicted by the Savitsky method correspond well with the trim angles from the model test. In conclusion, the recommendation to X Shore is to apply the Savitsky method when its applicability criteria are fulfilled, and CFD for the lowest speeds, where the Savitsky method is not applicable.
Förbränningsmotorer i båtar orsakar era miljöproblem, som exempelvis utsläpp av växthusgaser och försurning av hav. De flesta av dessa problem kan minskas genom att ersätta båtar med förbränningsmotorer med elbåtar. Den begränsade körsträckan är en av de största begränsningarna för elbåtar, och för att minska energiförbrukningen behövs metoder för att uppskatta motståndet under designstadiet. X Shore, ett startup-företag i elbåtsbranchen, saknar ett systematiskt tillvägagångssätt för att uppskatta motstånd i tidiga skeden i designprocessen. I den här studien har fyra välkända metoder - CFD, Holtrop & Mennen, Savitsky-metoden och modelltester - applicerats för att uppskatta motståndet hos ett testskrov. Studien är begränsad till ett skrov utan bihang och lugnvattenmotstånd. CFD-simuleringar har gjorts i mjukvaran  ANSYS FLUENT 19.0. Simuleringarna är baserade på Reynolds Average Navier-Stokes ekvationer och turbulensmodellen SST k - ω har använts tillsammans med metoden volume of fluid som beskriver ödet av både vatten och luft runt skrovet. De semi-empiriska metoderna, Holtrop & Mennen och Savitsky-metoden, har applicerats genom ett program i Python 3 som utvecklats av författarna. Resultaten från alla metoder har jämförts, och eftersom modelltester genomförts på detta skrov tidigare har de resultaten använts som referensvärden. Ett antal kriterier har identifierats och en Pugh-matris har använts för utvärdering av metoderna. Holtrop & Mennen uppskattar motståndet med låg noggrannhet och precision, felen varierar mellan 2:2% och 70:6%. CFD-simuleringarna ger acceptabla resultat av motståndsberäkningarna för hastigheterna 4 - 6 knop, med ett genomsnittligt absolut fel på 12:28% vilket är något högre än avvikelserna presenterade i tidigare studier. För högre hastigheter uppvisar metoden lägre precision där avvikelsen varierar mellan 1:77% och - 43:39%. Savitsky-metoden ger resultat med hög noggrannhet och god precision för planingshastigheter, men även för hastigheterna 7 och 8 knop. Metoden underskattar motståndet för alla hastigheter förutom för 7 knop där motståndet är 10:7% högre än för modelltesterna. I hastighetsintervallet 8 - 32 knop är det genomsnittliga felet en underskattning på 17:58%. Vidare överensstämmer trimvinkeln från Savitsky-metoden bra med resultaten från modelltesterna. Sammanfattningsvis rekommenderas X Shore att använda Savitsky-metoden när dess kriterier för tillämplighet är uppfyllda och CFD för de lägsta hastigheterna när Savitsky-metoden inte är tillämpbar.
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Ludcke, Justin A. "Modelling of inflatable rescue boats (IRBs) in surf conditions to reduce injuries." Thesis, Queensland University of Technology, 2001.

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The Inflatable Rescue Boat (IRB) is arguably the most effective rescue tool used by the Australian surf lifesavers. The exceptional features of high mobility and rapid response have enabled it to become an icon on Australia's popular beaches. However, the IRB's extensive use within an environment that is as rugged as it is spectacular, has led it to become a danger to those who risk their lives to save others. Epidemiological research revealed lower limb injuries to be predominant, particularly the right leg. The common types of injuries were fractures and dislocations, as well as muscle or ligament strains and tears. The concern expressed by Surf Life Saving Queensland (SLSQ) and Surf Life Saving Australia (SLSA) led to a biomechanical investigation into this unique and relatively unresearched field. The aim of the research was to identify the causes of injury and propose processes that may reduce the instances and severity of injury to surf lifesavers during IRB operation. Following a review of related research, a design analysis of the craft was undertaken as an introduction to the craft, its design and uses. The mechanical characteristics of the vessel were then evaluated and the accelerations applied to the crew in the IRB were established through field tests. The data were then combined and modelled in the 3-D mathematical modelling and simulation package, MADYMO. A tool was created to compare various scenarios of boat design and methods of operation to determine possible mechanisms to reduce injuries. The results of this study showed that under simulated wave loading the boats flex around a pivot point determined by the position of the hinge in the floorboard. It was also found that the accelerations experienced by the crew exhibited similar characteristics to road vehicle accidents. Staged simulations indicated the attributes of an optimum foam in terms of thickness and density. Likewise, modelling of the boat and crew produced simulations that predicted realistic crew response to tested variables. Unfortunately, the observed lack of adherence to the SLSA footstrap Standard has impeded successful epidemiological and modelling outcomes. If uniformity of boat setup can be assured then epidemiological studies will be able to highlight the influence of implementing changes to the boat design. In conclusion, the research provided a tool to successfully link the epidemiology and injury diagnosis to the mechanical engineering design through the use of biomechanics. This was a novel application of the mathematical modelling software MADYMO. Other craft can also be investigated in this manner to provide solutions to the problem identified and therefore reduce risk of injury for the operators.
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34

McMullen, Robyn Michelle. "The activities, perceptions, and management preferences of local versus tourist boaters on the Arkansas River." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06302009-040333/.

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35

Damon, Maria. "An empirical study of environmental policy and technology adoption phasing out toxic antifouling paints on recreational boats /." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3273809.

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Thesis (Ph. D.)--University of California, San Diego, 2007.
Title from first page of PDF file (viewed October 2, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 88-93).
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36

Hayhoe, Robert David. "An experimental study of ice accretion and wind loading on offshore supply boats." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/928.

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37

Mwarage, Jessy Mbagara. "Simulation of the catenary effect under wind disturbances in anchoring of small boats." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/75670.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 47).
It has been conventional knowledge for as long as ships have existed that the catenary effect of an anchor line augments the efficiency of an anchoring system. This is achieved by making the anchor line as heavy as possible thus lowering the effective angle of pull on the anchor. This notion has, however, come under criticism in recent times. Many small boat owners have shifted to lighter tauter lines for anchoring. The argument in favor of this new method is the cost savings associated with lighter anchoring and the tension relief that comes with using lighter and more elastic anchor lines. The purpose of this study is to therefore compare the performance of long slack lines that form catenary shapes with that of shorter taut lines. An analysis is presented that describes the surge motion of a small anchored boat exposed to an input forcing function and various retarding forces and effects. The anchoring system used in the analytical model results in a non-linear but symmetrical restoring force, which resists the force-induced motion of the boat. Two main types of anchor lines are considered: uniform-material and two-material anchor lines. Each anchor line is evaluated both in catenary configuration and taut configuration in terms of its ability to minimize the motions of the boat and tension force in the anchor line due to wind disturbances.
by Jessy Mbagara Mwarage.
S.B.
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38

Voulvoulis, Nikolaos. "Environmental analysis and assessment of biocides used in antifouling paints as alternatives to organotin compounds." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325576.

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39

McCullough, David Alexander. "Investigating portages in the Norse maritime landscape of Scotland and the Isles." Thesis, University of Glasgow, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325300.

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Mukerji, Jyoti. "Quality of on-board cryogenically frozen sea scallops (Placopecten Magellanicus)." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06302009-040229/.

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41

Barua, Mala A. "Determination of decomposition rates in selected mid-Atlantic fish species stored under iced and super-chilling temperatures." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08222009-040231/.

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42

Allievi, Alejandro. "Experimental and numerical analysis of a fishing vessel motions and stability in a longitudinal seaway." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26680.

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Motions and stability of a typical B.C. fishing vessel were experimentally and numerically investigated in a longitudinal seaway condition. The experimental model was self-propelled, radio-controlled and equipped with an on-board data acquisition system. Pitch, roll, yaw, surge, and heave responses to regular waves of predetermined frequencies and amplitudes generated along a 220-ft model basin were obtained. Different displacement conditions and GM configurations were tested. The numerical model for the dynamic analysis of the fishing vessel motions has been implemented using strip theory. A computer program was developed to study the nonlinear motions of the vessel. The velocity dependent coupling terms, responsible for a major part of the nonlinear behavior, were included. A time dependent component analysis of the roll damping has been performed. Regular linear and nonlinear waves were used. A parametric study of the fishing vessel stability has been carried out by considering its dynamic response in waves of varying characteristics. Unstable behaviour was found to be closely related to waves of length of similar magnitude to the ship length. The effects of wave amplitude and rudder usage were found to be of capital importance in the capsizing process. Experimental and numerical results showed good agreement.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate
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43

Grobler, Barend. "Development of a high speed planing trimaran with hydrofoil support." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/632.

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44

Hacquard, Louis Dee III. "Boats Against the Current: A Case Study of A High-Poverty School's Pursuit of Excellence." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1615805809621015.

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45

Anichtchenko, Evguenia V. "Open passage ethno-archaeology of skin boats and indigeneous maritime mobility of North-American Arctic." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/411811/.

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This thesis is an examination of prehistoric maritime mobility in the Arctic regions of North America through the ethno-archaeological analysis of skin boats. Covering over 100,000 km of coastline, the skin boat traditions of the Arctic and Subarctic zones are arguably among the most expansive watercraft technologies in the world, dating back at least 10,000 years. Despite the considerable material record generated by this geographically and chronologically extended use, and the potential this record contains for understanding Arctic maritime mobility, skin boat datasets are rarely considered in scholarly discussions on prehistoric exchanges and population movement. This study aims at closing this gap by focusing on the skin boat record as a key dataset for assessing the scale, nature and significance of maritime mobility in the North-American Arctic. The analysis of particular regional trends and cross-regional patterns is based on review of three case studies. Moving west to east this review starts in the Bering Strait region with a particular focus on the Kukulik site on St. Lawrence Island. Maritime mobility in the Chukchi Sea region is assessed through the archaeological assembly of the Birnirk site near Point Barrow, Alaska. The third case study is focused on the Qariaraqyuk site on Somerset Island, extending the geography of the research to the Central Canadian Arctic. Individual boat parts and the information they provide for reconstructing complete watercraft are analyzed along with the boat fragment frequency and spatial distribution. This provides understanding of the statistical and social makeup of seafaring in Arctic North America, of the logistics of maritime mobility, of the larger scale cross-regional and chronological patterns of skin boat design and use, and, ultimately, of the role of seafaring in constructing cultural landscapes of the prehistoric Arctic.
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Grablow, Katherine. "RECOVERY AND RESTORATION OF THE SEAGRASS HALODULE WRIGHTII AFTER BOAT PROPELLER SCAR DAMAGE IN A POLE-TROLL ZONE IN MOSQUITO LAG." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4294.

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This study combined documentation of four boat propeller scar types in Halodule wrightii seagrass beds in Mosquito Lagoon, Florida with manipulative field experiments to document scar recovery times with and without restoration. Scar types ranged from the most severe scar type (Type 1) with trench formation which had no roots or shoots in the trench, to the least severe (Type 4) scars that had no depth, intact roots and shoots shorter than the surrounding canopy. For 110 measured existing scars, the frequency of each scar type was 56% for Type 1, 10% for Type 2, 7% for Type 3, and 27% for Type 4. In the first manipulative experiment, experimental scars were created to document the natural recovery time of H. wrightii for each scar severity within one year. Type 4 scars recovered to the control shoot density at 2 months, while Types 1, 2, and 3 scars did not fully recover in one year. Mean estimated recovery for H. wrightii is expected in 25 months for Type 1, and 19 months for Types 2 and 3. For the second manipulative experiment, three restoration methods were tested on the Type 1 scars over a 1 year period. Restoration methods included: (1) planting H. wrightii in the scar trench, (2) filling the trench with sand, and (3) filling with sand plus planting H. wrightii. There was complete mortality of all transplants at 2 months and only 25% of scars retained fill sand after 1 year. With dense adjacent seagrass beds, natural recovery was more successful than any of my restoration attempts. Thus, I suggest that managers should concentrate on preventing seagrass destruction rather than restoration.
M.S.
Department of Biology
Sciences
Biology MS
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47

Mong, Lars Johan. "Structural strength of work boats and high speed crafts with pre-fabricated, floating panels in aluminum." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15478.

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This thesis evaluates some relevant aspects related to structural integrity for work boats and high speed vessels with floating frames. This structural design is expected to significantly reduce the building cost, but it is also expected to reduce the structural strength of the vessel. A model of a modified version of the JumboCat 60 (JC60) with floating frames is used as a recurring example in the calculations. As of date, the use of floating frames in not acknowledge by the classification societies. The traditional version of the JC60 is however classified according to the DNV HSLC rules, and it is shown that the scantlings for the floating frame version exceeds the minimum requirements in the rules. Finite element models of the traditional and the floating frame version of the JC60 has been developed. These has been analysed for three different load conditions as defined in the DNV Classification Notes 30.8, namely the symmetric bottom slamming, the transverse split force, and the torsional/pitch-connecting moment load condition. These load conditions are assumed to be the most critical. From the finite element analyses, it is seen that the structural response for both models is quite similar. Only the transverse split force load condition analyses showed stresses exceeding the allowable stress levels given in the DNV HSLC rules. However, the results indicated that the hull beam of the traditional model was slightly stiffer, so it is suggested that the plate thickness for the shell plating in the floating frame version is increased at some critical regions. An increase of the longitudinal stiffener shear area is also seen necessary to reduce high shear stresses at critical areas for the floating frame version. A fatigue assessment of the longitudinal stiffener-transverse floating frame connection has been performed. Three different locations were identified as potentially critical in terms of excessive fatigue damage. Those were located at the middle of the stiffener flange at the weld toe, at the edge of the stiffener flange at the weld toe, and at the edge of the frame bottom flange. The long term distribution of stresses was approximated by a twoparameter Weibull distribution. The shape factor was set to 0.81 and the number of load cycles for 20 years of service was set to 100 million. The maximum stress range in the load history was assumed to occur for symmetric bottom slamming. Four finite element models of the structural detail were developed and analysed for determination of the maximum stress range. It was found by Miner summation that none of the locations considered would experience a critical fatigue failure for 20 years of service.
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Murphy, Martin N. "Small boats, weak states and dirty money : contemporary piracy and maritime terrorism's threat to international security." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493960.

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The sea is a restless realm, In part that restlessness is timeless: the action of wind and waves. In part it is ancient: the direct threat of pirates. In part it is very modern: the threat of terrorism that has been felt acutely since the events of 11th September 2001. he reaction to these events has had a profound and continuing impact in the maritime domain. In particular it has been suggested that pirates and maritime terrorists present a largely common threat to international maritime security. This thesis examines this hypothesis by reviewing each phenomenon separately before asking how and under what circumstances pirates and maritime terrorists might come together.
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Whalen, Todd E. (Todd Edward) 1972. "Optimal deadrise hull analysis and design space study of naval special warfare high speed planning boats." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8132.

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Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.
Includes bibliographical references (leaves 64-65).
United States Navy SEALs (Sea, Air, Land) frequently employ high speed planing boats (HSPBs) in the performance of their missions. Operation of these vessels in normal and adverse conditions exposes personnel to severe mechanical shock. Anecdotal evidence and recent medical studies conducted by the Naval Health Research Center show a correlation between HSPB operation and chronic and acute personnel injury. Most current research focuses on short-term solutions that reduce shock at the hull-deck and deck-seat interfaces (deck padding and suspension seats, for example). The object of this thesis is to develop an Optimal Deadrise Hull (ODH) that reduces mechanical shock where it first enters the boat, at the hull-sea interface. Planing boat hydrodynamics were reviewed and the mechanical shock environment was evaluated. The ODH analysis is performed on the MkV Special Operations Craft in order to determine the effects of hull deadrise on vertical acceleration. Finally, the results of the ODH analysis are used to perform a design space study of planing hulls in order to optimize the overall design for vertical acceleration based on hull deadrise, cruise speed, and payload weight.
by Todd E. Whalen.
S.M.
S.M.in Naval Architecture and Marine Engineering
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50

Ervik, Toralf. "Structural Strength of Work Boats and High Speed Crafts with Pre-fabricated, Floating Panels in Aluminium." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11471.

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Aluminium is a material commonly used for smaller boats and high speed crafts due to its low weight. Traditionally the hull construction is performed in a similar manner as that of steel ships, with longitudinal stiffeners fitted through cut-outs in the transverse web frames and welded to the shell plating. This requires much fitting and welding, making the production of hulls a slow and expensive task due to the manual labour needed. An alternative method for construction of aluminium hulls is to extrude panels consisting of both the shell plating and stiffener. These pre-fabricated panels are then welded directly to the transverse frames, thus reducing the manual labour related to hull production significantly. This thesis continues the work previously performed by Jon Englund on floating panels. He found that the stresses will increase significantly in a floating frame structure compared to that of a traditional, fixed structure. It was discovered that the main challenge of a floating frame structure is out-of-plane bending stresses occurring in the stiffeners webs due to frame deflections. By use of finite element analyses and analytical calculations, a compartment of the JumboCat 60 is analysed, and proposals for achieving acceptable stresses are given. The stiffener stresses mentioned above are found to be drastically reduced by increasing the bending- and axial stiffness of the transverse web frames. Local stress concentrations are found in the intersection between stiffener and web frame. Nonlinear finite element analyses show that substantial strain-hardening can be achieved in the stiffeners webs through cyclic loading. The loss of strength due to welding may thus be partly recovered.
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