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The use of electric drives over the past century is reviewed focusing on their use in ice breaking ships where most of the significant developments were made between the 1930s and the 1980s. Future developments such as the US Navy's Advanced Surface Machinery Programs and recent developments in the application of magnetohydrodynamics (MHD) to experimental ship propulsion are also discussed. Topics include electric drive attributes electric propulsion systems for icebreakers the development of cycloconvertor systems thyristor controlled systems the AC/AC icebreaker Otso shaftline design principles the nuclear icebreaker Taymyr the tanker Uikku pod driven vehicles and future possibilities.

Some new requirements of 1981 amendments and relevant interpretations necessary for application to ships with regard to fire protection fire detection and fire extinction are examined.

The A/A max calculation procedure outlined in IMO's MSC/Circ 574 `The calculation procedure to assess the survivability characteristics of existing ro-ro passenger ships when using a simplifed method based upon resolution A.265 (VIII)' has shown some drawbacks which can give paradoxical results. The case for a one-compartment ferry and two- compartment ferry are described and conclusions discussed.

The SpecTec Group has supplied more than 2000 computerised Planned Maintenance Systems (PMS) onboard ships. The ISM Code requests the implementation of planned maintenance onboard vessels and the advantages of these systems are well known. Computerising the management of a fleet involves maintenance control spare parts control purchasing control and documentation control. The main problems with implementing a systems are human related and include training and resistance to new practices. An example is given of one of the largest container operators in Italy using the Administrative Maintenance and Operation System (AMOS-D).

The Structural Acoustics Group at DERA has been involved in developing modelling tools for radiated noise predictions for the Royal Navy. The methodology of designing a quiet ship is described and the Statistical Energy Analysis technique is presented as one of the useful design tools to quickly assess the internal and radiated noise at the early design stage. After some background information a look is taken at the radiated noise estimation tool. This is followed by consideration of noise control methodology.

This is a Fairplay report, dividing chapters between those of technical matters and those of commercial importance. Contents cover a brief history of ro-ro ships, ship propulsion, ship structural considerations, ship safety, ro-ro access, cargo handling - equipment and operations, ro-ro ship types, short sea/coastal services, deep sea services, and potential areas for ro-ro including the Caribbean, West Africa, the Middle East, the Far East and South America. There is also a chapter on fleet development.

This book is written for an informed maritime readership, but one which may not have a detailed knowledge of financial practices employed in the complex world of ship finance. This is a practical handbook in which the procedures and terminology are fully covered. Both new and secondhand craft are covered, while the book details the financial appraisal of new projects, the use of foreign currency, taxation and leasing and other subjects vital when the purchase of ships or rigs are considered.

The SWIM project is a 3 year project to investigate the effects of high speed craft's wash with the results due mid 2003. The investigation will assess wash impacts on environmental quality and safety and will develop better capabilities to predict wash generation by high-speed ships. The results should provide an improved basis for the regulation and planning of high-speed craft operations. The project involves direct collaboration between academic and industrial expertise to exploit complementary expertise maintain focus on objectives ensure high quality standards and best value for money. An overview of the project background and the 5 main work packages that make up the project are outlined.

Highly skewed controllable pitch propellers (CPPs) of KaMeWa's design and manufacture have been installed in nearly one hundred large passenger ships since their market introduction in 1977. This paper describes the main characteristcs and design principles for this type of propeller. Some results from cavitation tunnel model tests are presented. The essential service experience gained in full scale is summerised.

The application of artificial intelligence (AI) approaches to the modelling navigation and control of surface ships is considered. Researchers at the University of Plymouth have shown the viability of designing an intelligent ship autopilot which can effectively provide robust control for a large range of both vessel and environmental parameters. Other areas in which the research into marine application of artificial intelligence continues are outlined. First the elements of an intelligent machine are looked at. Next the ship as an intelligent machine is discussed.

The production and environmental factors that influence the coating process in shipyards are reviewed. Those areas where shipyards commonly have problems in managing the coating process are identified and some of the opportunities for improvement are described. Historically the painting process has been afforded no weight in the real task of building ships and only little weight in the planning process. However it is responsible for the majority of re-work waste and environmental concerns of a shipyard. The historical perspective is tackled followed by a review of the production process cost penalties and improvements to the coating process.

This book is intended for students of naval architecture. It is divided into three parts. Part 1 covers areas, volumes and centres of gravity; Part 2 looks at ship calculations (for displacement, metacentres, trim, cargo capacities, draught, tonnage, freeboard and launching) and Part 3 examines strength of ships (stresses, forces, bending moments, transverse strength).

A look is taken at hydrodynamic design aspects of propellers for high-powered single-screw container ships. The need for an integral approach to the design of the propeller and the afterbody hull form is shown. Also the importance is highlighted of attaining a sufficiently uniform wake distribution and an adequate tip-hull clearance. Consideration is given to prediction of the vibration excitation and the risk of cavitation erosion. Some practical design rules are given. Alternative solutions to the propulsion configuration are discussed.

A new computer programme has been developed to determine the stability of a ship passing across longitudinal waves. The effects of relative speed between ship and wave wave length wave height and rate of heeling of the ship are considered. The results are presented. First treatment concepts of ship's stability among waves are looked at. Next basic assumptions are discussed. Lastly a case study is considered.

The implications of impending international convention (IMO MARPOL annex expected 1997) regional and national regulations to restrict the levels of gaseous emissions from marine engines (particularly reciprocating internal combustion types) are considered especially for in-service Royal Navy ships. Typical emission profiles are compared with proposed limits and technical solutions (primary and secondary) for reducing and monitoring NOx are discussed with consideration of costs involved.

The history and operational characteristics of European oared ships are outlined briefly. Their design is discussed in detail centred upon two types of particular historical importance. Oar power hull wetted area and speed under oar is considered. Also seaworthiness and speed under sail is reviewed. Freeboard and oar length is discussed. The multi-rower oars system is described. Freeboard and stability is reviewed. Constructional limits are discussed. Lastly hull life building time and leakage are considered.

Hydrodynamic theory is applied to the three dimensional angular motions (roll pitch yaw) and completed motions (roll-pitch yaw-pitch yaw-roll included) of ships and floating platforms in regular waves. Aspects of controlled turning wave induced turning to a predictable heading; and the effects of coupled motion in producing constant tilt to the vessel are examined. Wave tank tests on a model platform provide experimental support for the theory.

A linearised three-dimensional potential flow formulation in time domain is applied to calculate wavemaking resistance of ships in calm water. Steady state perturbation potentials for resistance are obtained as the steady state limit of the surge radiation impulse response function using the transient free surface source distribution over the body surface. Three different vessels are used to validate the present numerical approximation. The results including steady state wave making resistance sinkage force trim moment and wave profile along waterline are compared with other published numerical and experimental results.

A rare opportunity to test the validity of theoretical predictions of the ultimate longitudinal bending strength of ships' hulls arose in 1980 when a VLCC broke its back during oil discharge. This paper describes the accident and presents results of retrospective strength calculations in which the modelling of the buckling and post-buckling behaviour of compressed parts of the structure has a major influence on the predicted ultimate moment of resistance of the hull. Sensitivity studies on the influence of uncertainties such as initial deformations and corrosion rates are outlined. Details of structural modelling and assumptions are presented.

This report presents the technical and economic rationale for utilizing wind propulsion systems for commercial shipping – specifically vessels of the American Merchant Marine. Alternative rig configuration ranging from fore-and-aft and square sails to wind sails and wind turbines are evaluated for their aerodynamic efficiency, technical feasibility and cost.