Relevant bibliographies by topics / Ships - general

Academic literature on the topic 'Ships - general'

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Published: 25 July 2024

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Journal articles on the topic "Ships - general"

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Taravella, Brandon M., and William S. Vorus. "A Wave Resistance Formulation for Slender Bodies at Moderate to High Speeds." Journal of Ship Research 56, no. 04 (December 1, 2012): 207–14. http://dx.doi.org/10.5957/jsr.2012.56.4.207.

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T. Francis Ogilvie (1972) developed a Green's function method for calculating the wave profile of slender ships with fine bows. He recognized that near a slender ship's bow, rates of change of flow variables axially should be greater than those typically assumed in slender body theory. Ogilvie's result is still a slender body theory in that the rates of change in the near field are different transversely (a half-order different) than axially; however, the difference in order of magnitude between them is less than in the usual slender body theory. Typical of slender body theory, this formulation results in a downstream stepping solution (along the ship's length) in which downstream effects are not reflected upstream. Ogilvie, however, developed a solution only for wedge-shaped bodies. Taravella, Vorus, and Givan (2010) developed a general solution to Ogilvie's formulation for arbitrary slender ships. In this article, the general solution has been expanded for use on moderate to high-speed ships. The wake trench has been accounted for. The results for wave resistance have been calculated and are compared with previously published model test data.
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Maulidi, A., T. Irmiyana, A. F. Ilman, Annafiyah, and Kuzzairi. "The development of internet-of-things (IoT)-based safety monitoring system in north sea madura." IOP Conference Series: Earth and Environmental Science 972, no. 1 (January 1, 2022): 012013. http://dx.doi.org/10.1088/1755-1315/972/1/012013.

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Abstract Internet of Things (IoT) is a concept where an object has the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction, used in the navigation and monitoring systems for ships safety. This monitoring system receives data from the AIS Transceiver, the equipment installed, and integrated with the ship’s network infrastructure. The equipment transmits signatures tracking the ships sailing and going ashore as the AIS Receiverreceives them. By the increasing number of ships transporting fuels and natural gas from mine-producing areas in the north sea Madura, passenger and cargo ships heading to Surabaya port. The development of an IoT-based monitoring system is prominent, it will ease to monitor the movements of ships. It may also become the basis for further developing ships monitoring systems to improve safety operating in the north sea Madura. In the initial system design, the system can transmit and receive static data, such as ships’ID and names. Then it can transmit and receive dynamic data, such as the ships’ geographical coordinate, to identify marine traffic around the areas. Later, this system could be developed so that it not only collects data but also proceeds the data to analyze the ships condition.
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Han, J., and M. Murai. "A parametric study on the initial transverse stability of suspension ships." IOP Conference Series: Materials Science and Engineering 1294, no. 1 (December 1, 2023): 012021. http://dx.doi.org/10.1088/1757-899x/1294/1/012021.

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Abstract Suspension ships are a novel type of ships that utilize a suspension system as an integral part of their structure. One critical aspect of a suspension ship is its stability characteristics. The parameters that affect the initial transverse stability of these ships include the ship’s mass ratio, loaded height of suspension, placement location height of suspension, and beam. It is found that designing a suspension ship in monohull configuration is more difficult than in a catamaran configuration. Special attention is required when the static mass ratio is below 2 for both monohulls and catamarans.
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Spouge, J. R. "The Safety of General Cargo Ships." International Journal of Maritime Engineering 145, A4 (December 1, 2003): 29–40. http://dx.doi.org/10.3940/rina.ijme.2003.a4.14031.

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Yang, Shujie, and Wei Sun. "Effective Ship Domains Considering Ship Encounter Situations and Speeds." Journal of Physics: Conference Series 2219, no. 1 (April 1, 2022): 012031. http://dx.doi.org/10.1088/1742-6596/2219/1/012031.

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Abstract Ship domain is an important concept in assessing navigation situation and planning collision avoidance manoeuvres of a ship. For purpose of improving the precision and adaptability of the ship domains, effective ship domains are proposed for ships with different speeds in a variety of encounter situations in this work. Firstly, the COLREGs-based division of encounter types and corresponding collision avoidance actions are further optimized. Therefore, the problem of unclear division of responsibilities caused by the intersection of relative position and relative heading is resolved. On this basis, ship domains are determined by the encounter situations and the target ship’s speed. More specifically, the ship domain is approximated to a circle, and the dependence of the domain size on the encounter situation and the target ship’s speed has been analysed and described, that enable us to determine effective ships domains for ships varying in speeds and encounter situations. The simulation results show that ships can make effective collision-avoidance actions in different encounter scenarios based on the optimized COLREGs-based division of encounter types and effective ship domains.
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Pérez-Canosa, José M., José A. Orosa, Feliciano Fraguela, and Pablo López-Varela. "Proposal of Optimal Operation in Ship Rolling Motion Considering Sea State Conditions." Journal of Marine Science and Engineering 10, no. 5 (May 14, 2022): 669. http://dx.doi.org/10.3390/jmse10050669.

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Most of the research on ship rolling motion concerns a specific type of ship, such as containerships, or analyzes sailing during certain wave characteristics, rather than the full spectrum of waves that can be encountered during the entire sea route. To date, the most frequent merchant ships in the world are general cargo ships, where the ship’s behaviour at any sea condition has a great influence on overall safety, as well as the lashing design of non-standardized cargo. For this reason, the present paper aimed to study ship-performance models, starting with concepts of the basic physics of ships and waves. Firstly, the ship’s behaviour was analyzed from a theoretical point of view, both in calm waters and when sailing in waves, but independently. Afterwards, the ship-waves system was analyzed during rolling with all variables accounted for at the same moment, with the objective of obtaining roughly realistic models. Relevant results are shown in each of the models, which may be of great interest for ship operators and, in general, for the shipping industry, so as to improve the safety of maritime transport. Finally, these results were validated with a case study.
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Vio, Igor, and Mate Brdar. "Maritime Autonomous Surface Ships – International and National Legal Framework." Journal of Maritime & Transportation Science 62, no. 1 (August 2022): 141–55. http://dx.doi.org/10.18048/2022.62.09.

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The use of autonomous ships in shipping industry is increasingly being analysed and occupies the maritime sector. In the maritime industry, the introduction of autonomous underwater crafts began first this trend, after which the development of autonomous surface ships has followed. Unmanned vessels include ships operated remotely by an operator on land and autonomous ships that are fully operated by the computer programmes and only in exceptional situations the ship’s crewmembers or other human resources may be involved. The commercial application of these facilities is becoming more and more certain and this topic is increasingly being discussed. This trend obviously poses a huge challenge to all maritime actors, as well as lawmakers at international and national level. Namely, although the current development of maritime law has effectively regulated most of new technologies, all these standards and regulations have been adapted for the use of the conventional manned ships. A number of questions concerning the possible change in international and national regulations regarding the implementation of autonomous ships have been raised. It is considered as a priority within the framework of IMO unification instruments and changes in the Maritime Code of the Republic of Croatia. This paper presents various legal aspects of the use of autonomous ships with the aim to define the autonomous ship and to examine how present international conventions and national regulations could adapt to provide the legal framework to the introduction of autonomous ships.
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Prill, Katarzyna, Cezary Behrendt, Marcin Szczepanek, and Iwona Michalska-Pożoga. "A New Method of Determining Energy Efficiency Operational Indicator for Specialized Ships." Energies 13, no. 5 (March 1, 2020): 1082. http://dx.doi.org/10.3390/en13051082.

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Limitation of CO2 emission is one of the main goals and regulations introduced by the international institutions’ rules. In the case of ships using oil-related and gas fuels this problem is dealt with by the International Maritime Organization (IMO) introducing the methodology of Energy Efficiency Operational Indicator (EEOI) determining for ships being under exploitation. The methodology allows for determining EEOI for seven types of ships, for which the value of this index depends on the amount of transported cargo or number of passengers, type of and amount of fuel used, as well as distance travelled by the ship. Such a methodology cannot be used for the specialized ships, whose exploitation tasks are different to the ships of the trade fleet that transport the cargo or the passengers. The methodology allows for determining EEOI for seven types of ships and it does not include specialized ships. The article presents a new methodology of determining EEOI for specialized ships that takes the characteristics of their exploitation into consideration. The way of its use has been presented taking into account the results of exploitation studies carried out on the chosen research and training ship. Obtained results and their analysis allowed for energy efficiency assessment of research and training ships depending on exploitation tasks, voyage time, type of fuel used, distance travelled and ship’s speed. EEOI index value determines energy efficiency of the vessel power system that is directly connected to the amount of the liquid or gas fuel used and the amount of emitted CO2. The aim should be to minimalize the value of EEOI index through planning of the exploitation tasks realization order and adjusting the speed of the ship as well as realization time of particular exploitation tasks, in the case of specialized ships. The analysis results can also be used when managing energy efficiency of these types of ships.
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Lee, Dongkeun, Chaeog Lim, Sang-jin Oh, Minjoon Kim, Jun Soo Park, and Sung-chul Shin. "Predictive Model for Hydrostatic Curves of Chine-Type Small Ships Based on Deep Learning." Journal of Marine Science and Engineering 12, no. 1 (January 18, 2024): 180. http://dx.doi.org/10.3390/jmse12010180.

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Capsizing accidents are regarded as marine accidents with a high rate of casualties per accident. Approximately 89% of all such accidents involve small ships (vessels with gross tonnage of less than 10 tons). Stability calculations are critical for assessing the risk of capsizing incidents and evaluating a ship’s seaworthiness. Despite the high frequency of capsizing accidents involving them, small ships are generally exempt from adhering to stability regulations, thus remaining systemically exposed to the risk of capsizing. Moreover, the absence of essential design documents complicates direct ship stability calculations. This study utilizes hull form feature data—obtained from the general arrangement of small ships—as input for a deep learning model. The model is structured as a multilayer neural network and aims to infer hydrostatic curves, which are required data for stability calculations.
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Zou, Yin Cai, and Wei Gang Zheng. "The Structure Design of Parent-Subsidiary Wind Sailing Boat and the Matching Research of Power Plant." Advanced Materials Research 912-914 (April 2014): 1032–36. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1032.

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Wind sailing boat fades out maritime transport industry gradually, because of its existence decreases the ship stability, and threatens mariners and ships security vastly. Project group has worked out high stability and security ship through researching literature and emulation-technique. Through the design of a parent ship and a sub-shipa set of wind sailing system and a water supply and drainage system, and the modeling calculation and analysis about the thrust of the fixed pitch propeller matching with the sailing, we can conclude that the added sub-ships can enhance ships stability in constant speed sailing situation. So it can improve thrust and reduce fuel consumption through increasing the scale of wind sailing.
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Dissertations / Theses on the topic "Ships - general"

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Dutt, Manasi. "Indian seafarers' experiences of ill-treatment onboard ships." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/71472/.

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This thesis investigates seafarers’ experiences of ill-treatment onboard ships. A sociological approach to ill-treatment is adopted, with a focus on characteristics of the work environment onboard which affect seafarers’ experiences of and responses to ill-treatment. A qualitative approach was employed to understand seafarers’ perceptions of ill-treatment. Semi-structured interviews based on the Negative Acts Questionnaire were conducted with seafarers and managerial personnel from one multinational and one Indian company. The seafarers were drawn from all ranks. Thematic analysis of the data revealed that seafarers’ perceptions, experiences and responses to ill-treatment were heavily influenced by characteristics of the work environment, including industry and company norms such as short-term contracts, the hierarchy, onboard, distance management and HR policies and training. Seafarers encountering ill-treatment can choose to exit their situation, raise their voice or remain silent. The findings showed that while support structures such as grievance procedures and union membership existed for seafarers experiencing ill-treatment, the majority of seafarers chose to remain silent because of complex interactions between a variety of workplace features. Fears included job insecurity, concern for career advancement, fear of blacklisting and personal financial concerns. Those seafarers that did choose to escape their situations found that there could be repercussions on their finances and their career ambitions, or that exercising their voice resulted in a reshuffle of seafarers but nothing of import changed. The professional socialisation process and culture onboard the ship are very important in influencing seafarers’ perceptions of ill-treatment, and play a role in the occurrence of preventative behaviour and use of coping mechanisms. In addition, the industry norms of short-term contracts, the purported manning crisis and a race to the bottom mentality force seafarers to be highly insecure in their jobs and encourage them to accept their situation until they can escape it.
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Jaen-Guardia, Paul. "The 1986 United Nations Convention on conditions for registration of ships." Thesis, University of Ottawa (Canada), 1988. http://hdl.handle.net/10393/5232.

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Llangco, Mark Oliver. "Filipino seafarers on-board cruise ships : shared viewpoints on working lives." Thesis, Cardiff University, 2017. http://orca.cf.ac.uk/105510/.

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Cruise ship workers and cruise ship employment are commonly described in popular literature as the stories of either ‘perfect workers in a dream job’ or ‘exploited workers on sweatships’. However, these popular portrayals tend to overlook the social and economic complexities of the work and the diversity of subjective experiences amongst cruise sector seafarers. To address this gap, this study investigates the social representations of the working lives of seafarers on-board cruise ships. Using the case of Filipino seafarers, one of the nationalities with the largest proportion of workers in the cruise ship sector, this study explores how workers in a globalised industry make sense of their employment experiences in relation to their lives. Q-methodology, a systematic research approach combining quantitative and qualitative methods in studying perspectives, was used to identify shared viewpoints on the working lives of cruise ship employees. Participants were asked to rank-order a set of 48 statements, which represent a range of occupational, organisational and work-related issues that they faced throughout their employment experience, along a fixed grid of agreement/disagreement taking the shape of an inverted pyramid grid (Q-sorts). Participants were also interviewed to elicit the rationales and narratives behind their sorting decisions. Factor analysis of 99 completed Q-sorts yielded four factors which were interpreted as ‘work-views’ or shared and holistic viewpoints on working lives. The accounts of ‘Good-fit’, ‘Troubled’, ‘Professional’ and ‘Ambivalent’ workers capture a more nuanced social representation of the working lives of cruise ship employees than those commonly presented in popular literature. These accounts of the working lives of cruise sector seafarers are discussed, in terms of the concept of work orientation, to highlight the workers’ multiple motivations and expectations of cruise ship employment, and to illustrate the embeddedness of work attitudes in social relationships on-board and in the communities of origin.
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Park, Jae-Hong. "Time domain simulation of hydroelastic response of ships in large amplitude waves." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/142721/.

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The influence of non-linearities on wave-induced motions and loads has been the focus of many investigations in the past few years and continues to be an important issue. A number of two- and three-dimensional methodologies have been developed, by and large, partly accounting for various non-linearities. Non-linear radiation, and to an extent diffraction, is the main problem and its solution via a three-dimensional method using Eulerian-Lagrangian schemes is likely to be complex and time consuming for practical applications. On the other hand two-dimensional methods, in spite of issues associated with accounting for forward speed, offer more possibilities of making practical advances in dealing with non-linearities. A two-dimensional hydroelasticity analysis for symmetric (i.e. vertical motions, distortions and loads) dynamic behaviour in waves, including the influence of nonlinearities, is presented in this thesis using two methods. In the first method the total response is decomposed into linear and non-linear parts. The linear part is evaluated using the conventional two-dimensional linear hydroelasticity analysis. The nonlinear hydrodynamic forces are due to changes in added mass and damping coefficients, as well as restoring and incident wave forces, all evaluated over the instantaneous wetted surface. Non-linear forces due to slamming (bottom impact and flare) and green water (treated in a quasi-static manner) are also added. One aim of the thesis is to investigate the influence/importance of each of the non-linear hydrodynamic forces. Furthermore, the effects of assumptions made when using these hydrodynamic forces, e.g. frequency dependence of added mass, neglecting the damping coefficients in some components and evaluation of derivatives, are investigated. The solution in the time domain is obtained using direct integration and convolution integration, the latter based on the impulse response functions of the hull in its mean wetted surface. In the second method the response, including nonlinearities, is obtained from the solution of one system of equations of motion, where the added mass and damping coefficients and the restoring, incident wave and diffraction forces are evaluated at the instantaneous draft. Non-linear forces due to slamming (bottom impact and flare) and green water (treated in a quasi-static manner) are also added. Both methods are applied to the S-175 containership, for which experimental measurements of motions and loads in large amplitude regular head waves are available. Comparisons made between predictions and measurements (heave and pitch motions, vertical acceleration and vertical bending moment) indicate good overall agreement. The comparisons also show that the influence of flare slamming is important for the range of speeds and wave amplitudes investigated.
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Foxhall, Katherine. "Disease at sea : convicts, emigrants, ships and the ocean in the voyage to Australia, c. 1830-1860." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/2711/.

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This thesis explores the relationship between migration and disease in c.1830 – c.1860. Each chapter questions how convicts, emigrants and the surgeons who accompanied them thought about disease and in turn how disease changes how we understand migration historically. It is a study of the creation of medical knowledge across the geographical space of the voyage to Australia and emphasises an understanding of disease as a mental and physical interaction between humans and their environment. The thesis argues that this understanding allowed migrants and colonists to see disease at sea as a test of migrants’ and convicts’ fitness to colonise. The point of departure for this thesis is that the Australian sailing voyage provides a unique and prolonged tension between shipboard confinement and global movements through ever-changing, often extreme, oceanic climates. From this premise, six individual chapters follow the trajectory of the voyage from Britain to Australia. These chapters analyse individual disease such as cholera, fevers, scurvy and consumption, as well as deepening our understanding of the tropics and quarantine by rethinking these histories through a maritime dynamic. Throughout, the thesis analyses evidence in convict and emigrant ship surgeons’ journals, migrants’ diaries and published medical literature as its primary source material, supplemented by government reports and contemporary newspapers. Collectively, the chapters of the thesis connect conventionally separate histories of medicine, convict transportation, colonial emigration, and British welfare and prison reform. By exploiting a uniquely maritime tension between shipboard confinement and global migration, the thesis provides a new way to understand the persistence of ideas about the relationship between people, environment, migration and disease in the modern period.
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Jevring, Cecilia. "Charlie likes sherry and chips, Shirley likes cherries and ships : New sounds in a new language." Thesis, Stockholms universitet, Engelska institutionen, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-113261.

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This study aims at investigating the suitability of the Contrastive Analysis Hypothesis and the Speech Learning Model in describing young Swedish learners’ L2 phonology difficulties. It also explores what L1 sounds they replace L2 sounds with, and whether spelling has any influence on pronunciation. 15 Swedish students aged 9-10 were interviewed and recorded reading a word list containing minimal pairs, a text passage, and free speech. The focus was on initial and final / ʃ / and / tʃ /, initial and medial / s / and / z /, and initial / ð / and / θ /. The recordings were analysed with spectrograms and compared to a native speaker. The results were that the SLM has an advantage over the CAH. The results show that / z / was replaced by / s / 100% of the time, / tʃ / was mostly replaced by / ʃ /, but also by / k /; and that / θ / and / ð / were replaced by many different sounds that were not anticipated. The results also showed that orthography affects pronunciation for / θ /, / ð / and / tʃ /, but not for / z /. Some students had nearly established new categories for some of the new sounds, but their daily encounters with English through TV, music, and school does not seem to have had a significant part in this.
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Dadd, George M. "Kite dynamics for ship propulsion." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/351348/.

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Kite propulsion has emerged as an attractive means to harness wind power in a way that yields environmental and financial benefits. An understanding of the dynamics that affect kite motion and the resulting forces is required to facilitate the design and optimization of kite propulsion systems. In this thesis results from two line tension models are compared with experimentally recorded time histories for dynamic kite flight. New methodologies for investigating kite performance are established. The first zero mass model assumes that the kite and lines are weightless. The second, lumped mass model, considers the kites mass and thus makes use of the equations of motion. It is found that the two different models converge to the same result in the limit where the kite mass tends to zero. The zero mass model has been shown to compare favourably with experimental results. A method for parameterising figure of eight shape kite trajectories and for predicting kite velocity is presented. Results are shown for a variety of manoeuvre shapes, assuming realistic performance characteristics from an experimental test kite. Using a 320m2 kite, with 300m long flying lines in 6.18ms.
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Kataria, Aditi. "An ethnographic exploration of ship-shore communication." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/87585/.

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Shore based monitoring, communication, coordination and management of vessel traffic in ports worldwide is a real world problem. Informed by ethnomethodological studies of work, this thesis explores the ordered in situ work of Vessel Traffic Service Operators (VTSOs); the coordination of vessel traffic; the fine grained artful performance and achievement of safe fairway navigation and the challenges faced by the VTS operators in the daily accomplishment of their institutional role. An important source of data in this ethnographic study is the naturally occurring interaction on the main working Very High Frequency (VHF) radio channel of the port, which helps explore institutional talk at work deployed to facilitate interaction, negotiation and the accomplishment of safe navigation. Three additional research techniques are utilised for data generation – observations, semi structured interviews and unstructured interviews. The case of a major Indian world port is utilised to explore the daily work of marine traffic coordination and the (pro)active interactional accomplishment of channel navigation. Research takes place against the dynamic backdrop of the harbour – a complex space with a myriad of social actors populating the scene – the VTS operators atop their tower; shipboard seafarers negotiating restricted waters; pilots rendering pilotage services; Dock Master commanding the station; seafarers aboard small local craft and lively fishermen who at times pepper the marine radio with colourful language. Two categories of findings emerge – port interaction order, institutional talk and the contingent practices that accomplish the safety/time critical work and the technological, organisational and social constraints that shape, affect and inform the work of the VTS operators. This study fills a gap in ethnomethodological studies of work with its focus on the VTS work site – a centre of coordination; it explores social order and contributes to the understanding of the local practical achievement of traffic coordination and channel navigation in restricted waters. It also contributes to our understanding of the constraints faced by the workers in the safety critical VTS work setting. Also discussed are the status of VTS operators and occupational hierarchy in the world port. The thick description of in situ VTS’ work informs maritime safety, particularly relevant in safety critical, congested and restricted sea areas.
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Kaaria, Christopher. "Investigating the impact of ship superstructure aerodynamics on maritime helicopter operations." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/11737/.

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The work reported in this thesis has investigated the impact of ship superstructure geometry on helicopter operations to the flight decks of naval warships. Ship-Helicopter operating limits for military frigates and destroyers are often restricted in difficult weather conditions because of excessive pilot workload caused by the unsteady ship airwake. Experiments have been conducted in a water tunnel using a specially designed Airwake Dynamometer (AirDyn) to characterise the steady and unsteady aerodynamic loading of a helicopter immersed in the airwake of a generic ship that has been called the Shortened Research Frigate (SRF). The AirDyn is a 1:54 model-scale helicopter, mounted on a six-component force block; it has a simplified spinning main rotor and fuselage based on a Merlin AW-101. The AirDyn has been shown to be an effective tool for characterising the steady and unsteady aerodynamic loading of a helicopter model in a ship’s airwake and the aerodynamic loads measured by the AirDyn were found to correlate with at-sea and simulation flying experience for a range of Wind-Over-Deck (WOD) conditions and ship geometry configurations. The airwakes of the SRF without the presence of a helicopter model have also been investigated using unsteady Computational Fluid Dynamics (CFD). A Detached-Eddy Simulation (DES) approach was used for the turbulence modelling as it has been shown to be capable of capturing the bluff-body type flow features typical of ship airwakes. Analysis of the CFD data revealed the underlying aerodynamic causes of the observed loading characteristics of the AirDyn. A range of ship geometry modifications were made to the SRF to determine the feasibility of mitigating the adverse effects of the airwake by modifying existing ships or by improving the designs of future ships. A range of modifications to the windward hangar side-face of the SRF were tested using the AirDyn and were found to reduce the severity of unsteady loads by up to 55% for oblique WOD angles (Green 30°-45°) at important locations through the flight path of a standard Royal Navy deck-landing manoeuvre. Unsteady CFD analysis showed that the modifications controlled the flow separation from the top edge of the windward hangar side-face in such a way as to reduce the height and the angle of the separated flow and thus the severity of the unsteady flow structures being drawn into the main rotor of the AirDyn. The unsteady CFD data computed for the baseline and modified SRF ship geometries was also integrated into the University of Liverpool’s motion-base flight simulator and piloted flight simulation trials were conducted to determine the impact of the ship modifications on pilot workload. The results of the simulation flight trials confirmed the usefulness of the AirDyn as a tool for predicting pilot experience and showed that it is feasible to modify ship superstructures to the extent that tangible reductions in pilot workload are achieved.
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Diken, Özgür. "Calculation of steady-state ship wave patterns using a general Rankine source method." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/422104/.

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Books on the topic "Ships - general"

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Quesada, Roberto. The ships. New York: Four Walls Eight Windows, 1992.

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Marcelo, J. J. Armas. Ships afire. New York: Avon Books, 1988.

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Hansen, Hans Jürgen. Ships' figureheads: The decorative bow figures of ships. West Chester, Pa: Schiffer Pub., 1990.

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Bouthillier, Claude Le. Phantom ships: A novel. Montreal: XYZ Pub., 2004.

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Easton, Alan. Ships against the sea. Halifax, N.S: Nimbus, 1986.

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Baxter, Stephen. The time ships. London: HarperCollinsPublishers, 2002.

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Robert, Carey. Freedom ships. Topeka, KS: Af-Am Links Press, 1999.

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Eastland, Jonathan. The romance of tall ships. London: Apple, 1990.

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Wells, Martha. The Ships of Air. New York: HarperCollins, 2005.

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Wells, Martha. The ships of air. New York: Eos, 2004.

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Book chapters on the topic "Ships - general"

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Usluer, Hasan Bora. "General Overview of Ships." In Smart Ships, 19–36. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003025924-2.

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Olsen, Alexander Arnfinn. "General cargo ships." In Merchant Ship Types, 69–72. London: Routledge, 2023. http://dx.doi.org/10.1201/9781003342366-6.

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Shama, Mohamed. "General solution of the torsion equation." In Torsion and Shear Stresses in Ships, 105–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14633-6_6.

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Unger, Richard W. "Ships, shipping, technological change and global economic growth, 1400-1800." In L’economia della conoscenza: innovazione, produttività e crescita economica nei secoli XIII-XVIII / The knowledge economy: innovation, productivity and economic growth, 13th to 18th century, 373–93. Florence: Firenze University Press, 2023. http://dx.doi.org/10.36253/979-12-215-0092-9.22.

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The major breakthrough in ship design around 1400 creating the full-rigged ship constituted a general purpose technology. It had far-reaching effects on shipping, trade volume, orientation of trade routes, location of production, settlement patterns and many other aspects of life throughout the globe from 1400 to1800. The greater efficiency of the type in a number of uses led to its dissemination, to a limited degree, throughout the world. Spillovers from the success of the design were extensive and included for example a literature on designing and building ships, improvements in navigation and in government practices. Advances in shipbuilding were one of the very few technologies in the period that qualified as a technological advance with massive consequences.
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Rødseth, Ørnulf Jan, Dag Atle Nesheim, Agathe Rialland, and Even Ambros Holte. "The Societal Impacts of Autonomous Ships: The Norwegian Perspective." In Autonomous Vessels in Maritime Affairs, 357–76. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24740-8_18.

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AbstractIt is often assumed that the driving force behind autonomous ship discussions is reduction in crew cost or societal concerns like improved maritime safety due to reduction in human errors, better working conditions for crew in land-based control centers, or sustainability goals achieved through higher efficiency and lower emissions. But in assessing actual projects that are underway other factors also stand out. For the container ship Yara Birkeland, for example, the major drivers were reduction in local truck transport through urban areas and the realizing of a completely green electric transport. For ASKO cargo ferries, improved reliability of their inter-warehouse transport was a significant additional factor. This chapter will discuss possible societal benefits and potential drawbacks of autonomous ships, as presented in literature as well as from our own research particularly from the European Union (EU) projects Advanced, Efficient and Green Intermodal Systems (AEGIS) and Autonomous Shipping Initiative for European Waters (AUTOSHIP), and the Norwegian project “Smartere Transport”. The focus is on cargo transport, but some concerns for passenger transport will also be explored. The analysis is mostly qualitative, but some quantitative key performance indicators (KPI) will be proposed. The perspective is mainly Norwegian, a society with a high living standard and a sparsely populated nation, where advanced ship technology is a necessary part of life and in general positively regarded. Nevertheless, many of the observations are deemed highly applicable to other countries and regions.
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Karkori, Fidaa. "General Duties and Responsibilities for Crew Safety, Health and Welfare on Ships." In Synthesis Lectures on Ocean Systems Engineering, 3–12. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51667-2_1.

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Eidem, M. E., and Y. Sha. "Ship impact from a general cargo vessel on the Bergsøysund floating bridge in Norway." In Advances in the Collision and Grounding of Ships and Offshore Structures, 493–99. London: CRC Press, 2023. http://dx.doi.org/10.1201/9781003462170-60.

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Goethe, W. H. G. "Chemical Hazards on Ships, Especially Tankers: Toxicargo in General and Chemical Tankers Chemical Hazards on Board." In Health and Medical Aspects of Disaster Preparedness, 75–78. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4613-0589-7_6.

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Dev, Arun Kr, Makaraksha Saha, and George Bruce. "General Introduction." In Ship Repairing, 1–5. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9468-4_1.

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Papanikolaou, Apostolos. "General on Ship Design." In Ship Design, 1–68. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8751-2_1.

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Conference papers on the topic "Ships - general"

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Stancliff, Robert C. "The General Electric LM5000 Marine Gas Turbine." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-13.

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The General Electric LM5000 Marine Gas Turbine (see figure 1) intended for application to commercial and naval ships requiring high power (50,000 BHP nominal), high thermal efficiency (38 percent), and compact, marinized and relatively light weight prime movers is described. Ship candidates include Fast Support Ships, Aircraft Carriers [in a Combined Nuclear and Gas Turbine (CONAG) propulsion system], Battleships and large surface effect ships. The LM5000 marine gas turbine is a marinized version of the LM5000 industrial gas turbine which was derived in 1977 from the CF6-50 aircraft engine. The CF6-6 model of this family of aircraft engines was the parent of the over 648 GE LM2500 marine gas turbine now used on the ships of 18 navies, 32 ship programs and 247 ships of the world. Over 2100 of the CF6-50 mode] engines are used on over 600 of the McDonald Douglas DC-10, the Airbus A300 and the Boeing 747 aircraft. Since reliability and durability are dependent upon engine family experience, the hardware commonality with the CF6-50 aircraft engine is described as well as the associated experience, performance, installation and maintainability features.
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Xianyong Feng, Takis Zourntos, Karen L. Butler-Purry, and Salman Mashayekh. "Dynamic load management for NG IPS ships." In Energy Society General Meeting. IEEE, 2010. http://dx.doi.org/10.1109/pes.2010.5589441.

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Carter, Craig D. "Eliminating Discharges in Oil/Sea Interfaces - a Return to Seawater Lubricated Propeller Shaft Systems for Commercial Ships." In SNAME 5th World Maritime Technology Conference. SNAME, 2015. http://dx.doi.org/10.5957/wmtc-2015-101.

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Oil discharges from a ship’s propeller shaft system are an issue for commercial ship owners. A 2010 study by a New York Consulting firm estimated the total worldwide amount of lubricants from operational discharges from ships would be about 130 to 244 million litres annually. To add perspective, oil pollution from the Exxon Valdez tanker spill in 1989 was 41.6 million litres. Most ships use mineral oil to lubricate the propeller shaft and the oil is contained in the propeller shaftline by the aft seal – which is the oil to sea interface. According to the new U.S. Environment Protection Agency Vessel General Permit (VGP), all vessels built on or after Dec. 19, 2013 and trading in US waters must use an environmentally acceptable lubricant (EAL) in all oil to sea interfaces before their next drydocking. This paper will review: the renaissance of seawater based systems, a general description of a seawater lubricated bearing system, current commercial ship users and results, lower operating costs with “free” seawater and no aft seal, conversions of existing ships and resistance of shipyards to change standard designs from oil to seawater. The paper will also review new Classification rules from LR, CCS and BV for seawater lubricated propeller shaft systems, allowing the shaft to remain in place if monitoring conditions are met - which removes a major obstacle that ship owners had with seawater-based propeller shaft bearing systems.
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Koshkareva, L. A., and I. G. Procenko. "The rationale for amending the fisheries law in terms of requirements for equipping ships TSK." In General question of world science. "Science of Russia", 2019. http://dx.doi.org/10.18411/gq-31-07-2019-16.

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Fujii, Michio, Mitsuru Hayashi, Misako Urakami, and Nobukazu Wakabayashi. "The Development of Meteorological and Oceanographic Data Collection and Recording System Operating on Training Ship." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-23883.

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The observation at sea for marine meteorology is achieved by weather reports from merchant ship’s crew every 3 or 6 hours, mainly. However, the number of available observation data is insufficient for weather forecasting and marine environmental simulation, compared with landside. Nowadays, the special data collection function is required if the automatic observation data collection system is installed on ship. But, it is difficult to install special equipment onto general merchant ship. Therefore, we develop a prototype marine observation system, which can be installed various types of ships easily without any special data collection function for improving data collection source and/or period of the observation at sea. In this paper, a) the configuration of high reliability and durability marine observation system by using general-purpose PC and general meteorological / oceanographic sensors, b) outlook of utilizing the data, which collected by this system, are described.
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Jaksic, Marko, Zhiyu Shen, Igor Cvetkovic, Dushan Boroyevich, Rolando Burgos, Christina DiMarino, and Fang Chen. "Medium-Voltage Impedance Measurement Unit for Assessing the System Stability of Electric Ships." In 2018 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2018. http://dx.doi.org/10.1109/pesgm.2018.8586103.

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Tavagnutti, Andrea Alessia, Daniele Bosich, and Giorgio Sulligoi. "Optimized Tuning for Flexible and Resilient Control of Zonal DC Microgrids on Ships." In 2023 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2023. http://dx.doi.org/10.1109/pesgm52003.2023.10252256.

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Inoue, Yoshiyuki, N. M. Golam Zakaria, and Ryoji Nakai. "A Parametric Study on Relative Wave Height of Ships in Short Crested Irregular Sea With Forward Speed." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67191.

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This paper deals with the parametric study of relative wave heights of ships in short crested irregular seas. Here linear potential theory has been used to describe the fluid motion and 3-D sink-source technique with forward speed has been used to determine hydrodynamic forces for surface ship advancing in waves at constant speed. The time domain simulations of relative wave heights of typical container ship, bulk carrier, pure car carrier (PCC) and general cargo ships in short crested irregular waves have been carried out for three different sea states and for the parametric study of these vessels, different sizes of ships have been considered. Empirical roll damping has been taken into account in time domain analyses of motion responses of sea going ships in rough seas and for ensuring longer time simulation of the random sea waves, unequal frequency spacing has been used. Finally, the numerical results of the maximum and the significant values of irregular relative wave heights are discussed by comparing with some requirements by a classification society of shipping for the different sizes of ships which might provide some important information for the designer of ocean going vessel to assess possible deck load or bottom impact force on future regulation of designing ship.
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Skejic, Renato, Kensuke Kirimoto, Tor E. Berg, and Egil Pedersen. "Towards the Navigational Safety Standard in Close Proximity Underway Lightering Maneuvers of Two Ships." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-50159.

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The development of a generalized navigation safety standard for ships performing underway lightering maneuvers in close proximity has been considered from an operational viewpoint. In general, it is well known that the safety and efficiency of a maritime operation between two ships at close range represents a challenging and demanding task to mariners. The main reason is related to unfamiliar maneuvering behavior of the involved ships and consequently a poor decision-making process due to lack of knowledge and understanding of ship-to-ship interaction effects. Operational challenges in ship-to-ship lightering can be reduced through an increased knowledge and understanding of the hydrodynamic interaction effects. This paper discusses how to perform the lightering maneuver in the final approach phase until the lateral distances are reduced to the fender diameter. Visualization of ‘Collision Danger Zones’ due to hydrodynamic interaction is proposed to be introduced in a decision-support tool to assist the pilot/master to control the approach phase of the ship-to-ship operation and thus improve the overall operational safety.
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Kar, A. R., and B. B. Dutta. "Risk Analysis Techniques for Improving Fire Safety Onboard Ships." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49006.

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It is widely known that fire on board ships is one of the major ship accidents resulting in loss of life and property. There exist international rules and regulations for ship design with reference to fire safety. These rules are primarily prescriptive with a provision for alternative design. For any novel or new type of design which is particularly very common these days for the design of Cruise Liner or Large Passenger Ships, the prescriptive part of the rule is found to be inadequate, so there is a need to resort to the provision of alternative design. This alternative design can be based on Risk Based approach. It is now well recognized by ‘International Maritime Organization’ that Risk Based approach is the most potential way out for bringing in innovation and improving safety in Marine industry. Though, Fire safety encompasses many aspects of Ship Design and Construction, however, various systems installed on board ships for detection and suppression of fire play an important role in controlling and improving the level of fire safety. In general these systems are installed as per the requirement of applicable regulation without having clear understanding of the failure mechanisms, function of the system and their interactions. This understanding is essentially required in order to improve the system reliability as well as effectively dealing with various accident scenarios. This paper describes some of the techniques which can easily be used and implemented for the purpose improving the clarity of systems installed on board ships for effectively and reliably dealing with fire accident on board ships. Some Fault Tree Analysis (FTA) and Event Tree Analysis (ETA) for various systems and fire scenarios will be described/presented in this paper.
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Reports on the topic "Ships - general"

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Paterson, Eric G., Robert V. Wilson, and Fred Stern. General-Purpose Parallel Unsteady Rans Ship Hydrodynamics Code: CFDSHIP-Iowa. Fort Belvoir, VA: Defense Technical Information Center, November 2003. http://dx.doi.org/10.21236/ada458092.

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Bain, Rachel, Richard Styles, and Jared Lopes. Ship-induced waves at Tybee Island, Georgia. Engineer Research and Development Center (U.S.), December 2022. http://dx.doi.org/10.21079/11681/46140.

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Commercial vessels transiting the Savannah entrance channel intermittently generate large wake events at Tybee Island, Georgia, creating a potential hazard for beachgoers. However, not all commercial vessels generate large wakes, and the relationship between vessel dimensions, operating conditions, wake height, and drawdown magnitude is unclear. This study evaluates bathymetric data, high-frequency wave and vessel wake measurements, and broadcast vessel identification over a 4-month period with the goal of providing a quantitative characterization of vessel wake conditions at Tybee Island. Data from 1,386 cargo vessel passages and 202 tanker passages indicate that vessel dimensions (length and beam) are positively correlated with drawdown magnitude and secondary wake height, although large vessels do not consistently generate large wakes. Container ships, which tended to travel faster than tankers, corresponded to the largest wakes in the dataset. A further hypothesis is that tidally modulated energy dissipation may favor smaller vessel wake uprush at low tide and larger uprush at high tide, but this idea cannot be confirmed without additional measurements to quantify nonlinear wave propagation on the beach face. Based on the collected data, the study concludes with four recommendations for reducing risk to beachgoers.
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Wilkins, Jr, Singh James R., Cary Perry, and Todd. The National Shipbuilding Research Program. 1995 Ship Production Symposium. Paper No. 7: Generic Build Strategy - A Preliminary Design Experience. Fort Belvoir, VA: Defense Technical Information Center, January 1995. http://dx.doi.org/10.21236/ada450229.

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Kopte, Robert. OSADCP Toolbox. GEOMAR, 2024. http://dx.doi.org/10.3289/sw_2_2024.

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Vessel-mounted Acoustic Doppler Current Profilers (ADCPs) provide velocity profiles of the upper ocean along the ship track. They are a key tool in oceanographic research to study the oceanic circulation and the associated distribution of mass, heat, contaminants and other tracers. In order to obtain high-quality ocean current data from vessel-mounted ADCP measurements, a number of requirements must be met, from system installation and data acquisition measures to certain essential processing steps. Here, we collect key points on ADCP data acquisition in general and on the characteristics and requirements of vessel-mounted deployments. We summarize general post-processing guidelines and present an open-source Python toolbox called OSADCP for scientists to convert, clean, calibrate and organize binary raw vessel-mounted ADCP data for scientific use. The toolbox is designed to process ADCP measurements in deep water by Teledyne RDI Ocean Surveyor ADCPs and the data acquisition software VMDAS. An extended version of OSADCP is continuously developed as part of a data management project for the German oceanographic research fleet. The corresponding workflow was designed to ensure a standardized and reliable ADCP data transfer from the sensor to the repository. It is described here as one example for scientific data management that follows FAIR data guidelines.
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Leonard, J. T., Jr Shanley, Scheffey J. H., Ferguson J. L., and J. B. Review of Department of the Navy, Judge Advocate General's Surface Ship Fire Investigation Reports for the Period 1980 through 1986. Fort Belvoir, VA: Defense Technical Information Center, December 1989. http://dx.doi.org/10.21236/ada216705.

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Cummings, John. Geese, Ducks and Coots. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, August 2016. http://dx.doi.org/10.32747/2016.7208739.ws.

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Canada geese, snow geese, ducks, and American coots all have been implicated in agricultural crop and turf damage. Generally, goose, duck, and American coot damage to crops, vegetation and aircraft can be difficult to identify. Usually the damage to crops or vegetation shows signs of being clipped, torn, or stripped. Tracks, feces, or feathers found neat the damage can be used to help identify the species. Damage to aircraft is obvious if the bird is recovered, but if not, and only bird parts are recovered, a scientific analysis is required. Canada geese, snow geese, ducks, and American coots are federally protected by the Migratory Bird Treaty Act (MBTA), which stipulates that, unless permitted by regulation, it is unlawful to “pursue, hunt, take, capture, kill, possess, sell, barter, purchase, ship, export, or import any migratory birds alive or dead, or any part, nests, eggs, or products thereof.” Generally, geese, ducks, and coots can be hazed without a federal permit in order to prevent damage to agriculture crops and property with a variety of scare techniques. In most cases, live ammunition cannot be used.
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David, Aharon. Unsettled Topics Concerning Airport Cybersecurity Standards and Regulation. SAE International, September 2021. http://dx.doi.org/10.4271/epr2021020.

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A large international airport is a microcosm of the entire aviation sector, hosting hundreds of different types of aviation and non-aviation stakeholders: aircraft, passengers, airlines, travel agencies, air traffic management and control, retails shops, runway systems, building management, ground transportation, and much more. Their associated information technology and cyber physical systems—along with an exponentially resultant number of interconnections—present a massive cybersecurity challenge. Unlike the physical security challenge, which was treated in earnest throughout the last decades, cyber-attacks on airports keep coming, but most airport lack essential means to confront such cyber-attacks. These missing means are not technical tools, but rather holistic regulatory directives, technical and process standards, guides, and best practices for airports cybersecurity—even airport cybersecurity concepts and basic definitions are missing in certain cases. Unsettled Topics Concerning Airport Cybersecurity Standards and Regulation offers a deeper analysis of these issues and their causes, focusing on the unique characteristics of airports in general, specific cybersecurity challenges, missing definitions, and conceptual infrastructure for the standardization and regulation of airports cybersecurity. This last item includes the gaps and challenges in the existing guides, best-practices, standards, and regulation pertaining to airport cybersecurity. Finally, practical solution-seeking processes are proposed, as well as some specific potential frameworks and solutions.
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Lee, Wall, and Burch. L52333 NDE and Inspection Techniques Applied to Composite Wrap Repairs. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 2012. http://dx.doi.org/10.55274/r0010468.

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The objective includes: Assess commercially available inspection methods to validate integrity of composite repair systems. Identify applicability to inspect composite overwrap and parent metal for both onshore and sub-sea pipelines (where information is available). Identify sources of data to include other users of composite materials(aerospace/aircraft, naval/ship repairs). Identify procedures and technologies to assess inspection effectiveness and provide a gap analysis. Interface with other PRCI projects on long-term testing of composite repairs and other joint industry projects on composite repairs to improve our understanding of long term durability of repairs. Identify global experience with composite repairs; not just North America. For general wall loss, radiography or electromagnetic techniques appear to be the best candidates. Standard radiography techniques can detect changes in wall thickness over a large area. Saturated low frequency systems, e.g. SLOFEC are good for a quick rapid scan of the area of interest. Pulsed eddy current, e.g. PEC, is also available for a general survey of the underlying substrate. For pinhole leaks, the electromagnetic techniques do not have sufficient resolution to detect defects of order 20 mm (0.8 in.) diameter and less. Standard radiography techniques can detect pinhole leaks down to diameters of 3 mm (0.12 in.) or less. Tangential radiography techniques are generally good for defect sizing but there are practical limitations with chord length (i.e. beam path through the pipe wall). Ultrasonic techniques could offer a potential solution but is currently limited due to the high attenuation of the composite repair material where through the repair inspection could only detect large diameter defects greater than 25 mm (1 in.) diameter on thin repairs less than 5 mm (0.2 in.). Detecting pin hole defects by applying the ultrasound along the axial direction of the substrate, effectively skipping the ultrasound under the repair, showed more promise. For delamination or debonding of the interface between the composite laminate and the steel substrate, laser shearography and microwave inspection appear to offer the best solution. Currently there is no single inspection technique that can be applied with confidence to the inspection of interfacial delaminations. Further developments are on-going to provide a solution to this challenging inspection problem. Acoustic emission is able to give an overall picture of the damage within the composite under live loads. It can be used as a QA tool to test the integrity of the repair. However, it is difficult to interpret the signals to gain any quantitative information about a particular defect.
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Raj, Phani K. DTRS56-04-T-0005 Fires in an LNG Facility - Assessments, Models and Risk Evaluation. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2006. http://dx.doi.org/10.55274/r0011800.

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The models used at present to evaluate the potential hazard areas around large LNG fires were developed with field test data from smaller diameter (1.8 m to 15 m) fires. These models are, however, applied to predict hazard distances from fires much larger in size compared to the experimental fires. Recent publication of the results from a series of tests conducted in 1987 with 35 m diameter LNG fires indicates that large LNG fires tend to generate significant amount of black soot. The black soot is postulated to be generated from incomplete and inefficient combustion of fuel vapors due to reduced oxygen diffusion into the combustion zone near the core of the fire. This phenomenon (of black soot production) in large LNG fires reduces the radiant heat hazard expectations in areas surrounding such fires. In this project, a review was undertaken of the different types and sizes of fires that could occur in a LNG facility and from ship releases, either due to accidental releases or from deliberate acts. The models associated with each of the fire scenarios have been reviewed. A new generation LNG pool fire model ("PoFMISE") has been developed based on data from a number of tests with both LNG and other hydrocarbon fluids. This model is applicable to small as well as large LNG fires and includes the formation of smoke and the consequent diminution of radiant heat output from the fire. The results of the model agree with experimental results for mean emissive power for fires of less than 35 m. Results for larger fires indicate substantial reduction in mean emissive power with almost 50% reduction for a 300 m diameter fire compared to the values used in current models. This implies that the currently predicted hazard distances for large fires are high (by factors of 2 to 3, after accounting for atmospheric absorption). The report also provides guidance with an illustrative procedure to calculate the risk from different types and sizes of fires that may occur in a LNG facility.
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Savings Bank of New South Wales - Sydney (Head Office) - Ledgers - No. 7 Accounts - General, Mortgages, Prisoners, Ships - 1839-1866. Reserve Bank of Australia, March 2021. http://dx.doi.org/10.47688/rba_archives_2006/21490.

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