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Effects of enemy action wartime service conditions and modifications to loading and survey schedules on temporary/emergency and permanent repair work needed for merchant ships discussed with illustrative examples.

Strip theory for a single running ship is applied to predict the coupled motions of small water plane area twin hull ships with and without speed in waves.

Based on slender body inviscid and boundary layer flow theory with allowance for viscous effects a mathematical model for calculating the forces (side force yawing moment) on ships sailing with small angles of yaw is developed. Values are calculated for a number of different hull forms (airship R101 mariner a mathematical slender hull form a VLCC and a tanker) and compared with experimental model measurements. The importance of scale effects is discussed.

A structural design procedure for icebreakers and ice ships is based on the prediction of environmental and operational loads with plastic and elastic structural responses. It has been developed in conjunction with the United States Coast Guard Polar Icebreaker Replacement program (PIR) The method is compared with other approacheds (ABS ASPPR USSR Register of Shipping) and existing vessels. Design examples are included with materials selection and design of shell and deck plating bow structure and hull girder.

The author sets out his approach to the problem of ensuring the stability of iron-built ships. The scientific theories of floatation, buoyancy and stability are discussed and applied to then contemporary ship design and shipbuilding techniques. The experiments of French naval architects on methods of treating stability are also described, providing the first English translation of their research. It provides a record of Victorian naval and scientific understanding of iron-built ship stability, corrective design and construction methods.

"Emergency Aid" a Shipmasters' prototype computer based multi-media information retrieval and presentation package has been developed as part of the European collaborative INTUITIVE project to assist in the successful control of emergencies in complex installations particularly ships. Discussions include: task and domain analysis; functional requirements; construction of the demonstrator; evaluation; sample screens from the prototype (scenario of engine room fire); potential applications in emergency aid and training.

The performance of crew accommodation air conditioning systems has been studied on 19 ships and in discussions with the Board of Trade. Features of the most successful systems are described and principal causes of failure examined with data on mean time of failure for a range of components. Desgin features operating procedures and maintenance are discussed for a number of components including filters piping valves seals reciprocating compressors and rotary vane compressors. Recommendations to increase reliability are included.

The Nautical and the Survey Department of the University of Applied Sciences in Oldenburg (Germany) are developing a powerful product to simplify the determination of the exact squat of a vessel. This GPS-based method is named Shore Independent Precise Squat observation (SHIPS) and has been tested successfully in several experiments on German waterways. First the concept for a new method is outlined. Next evaluation of the GPS data is looked at followed by corrections for the observed height difference. Experimental results are presented and discussed. Lastly further possibilities are considered.

The labour supply for the manning of ships has moved from the developed to the developing nations. OECD and Asian countries are at the forefront of the global seagoing labour market (SGLM). Implications of the trend on the nature of seafaring are discussed. The question of whether Asia will replace OECD countries and criteria for sources of seafarers are explored. The situation in Philippines India and China for seafaring recruitment is discussed. It is concluded that with the right public policy support training infrastructure and strength of numbers these countries should hold more of the market share of global seafarers.

The economic impact of the invasion by aquatic nuisance species (ANS) of North American waters is estimated in the billions of dollars and the ecological impacts are not yet fully understood. ANS introductions have occurred even after Ballast Water Exchange (BWE) programs were in place. Some of the BMT FTL Research and Development aimed at providing a solution applicable to international ships entering the Great Lakes is outlined. A review and comparison of various system configurations is presented including filtration and hydrocyclonic primary treatment with ultraviolet sterilisation secondary treatment.

Significant advances in shipboard cargo handling systems and equipment on-going to meet the demands of future ships are reviewed with discussion of: hatch cover seals and bearings (including cat seals omega seals and the Unipad low friction support pads); cranage for the handling of specific cargoes (including pallets bulk and paper rolls) and twin crane installations for optional increased lifting capacity; liquid cargo valve actuator systems; elevators for the movement of personnel and cargo; and container lashing systems (including twistlocks lashing bars lashing bridges and cell guides). The need to consider cargo handling arrangements at the ship design stage is stressed.

Because the trend toward shorter and broader ships makes it problematic to extrapolate results of well-known systematic model series for resistance and power predictions the new D-series originating from a twin-screw round-bilge hull form was developed. For seven models of this series with three beam-draft ratios two volumetric coefficients and two longitudinal prismatic coefficients systematic resistance propulsion and load variation tests in calm water have been performed. A full scale ship power prediction method was developed based on the experimental results.

Recently the US Navy has begun to pursue the acquisition of high-speed Littoral Combat Ships (LCS) specially designed to operate in coastal waters. In this paper the requirements of the high-speed LCS are discussed in the context of the conceptual design process reflecting upon the options available to the naval architect and marine engineer. Reference is made to other corvette designs having similar roles and to conceptual LCS designs developed by young engineers.

A method is proposed for evaluating the overall dynamic stability of an intact vessel in a seaway. An existing ship motions program is used to study the motion of a vessel with a certain loading condition speed and heading in given wave conditions. A deterministic method is discussed for looking at the stability of a vessel over a wide range of these parameters. This is done with a view to giving operators advice on the safest headings and speeds to adopt in extreme conditions as well as gauging the overall safety of a particular vessel. It is hoped that eventually such dynamic stability analysis can be used to modify the present IMO stability criteria for ships.

As a result of increasing demand for lower beds and bigger ships Festival has commissioned three new builds which will incorporate the latest pod technology in their propulsion schemes. The advantages and disadvantages of the system are explained in terms of efficiency and manoeuvrability. The technical failures (mechanical and electrical) encountered over a 3-year operating period are described. The measures used to resolve these problems are described and evaluated and the development of performance monitoring methodologies and software are described.

Current applied and practically feasible techniques of electricity production on board ships are reviewed and analyzed with technical economical and ecological factors taken into consideration. A general selection criteria of ship electrical power plant type is provided. Lastly there is an economical analysis of feasible electricity production plant alternatives for a 12-16000 DWT bulk carrier series.

Four of four volumes: Includes N3 (coastal) Type S2 (Frigate) Type S3 Types - Tank Landing Ships; Cable Ships S4 Types - Kaiser built escort carriers; Special Attack Ships; Operation Crossroads P3 Type (Post-War Liners) P6 Type (s.s. United States) C3-S-DX1 Prototype

Papers on design theory in general and on the practical design of ships are compared in an attempt to trace the influence of design theory on ship design. About 30 papers and books published between 1951 and 1995 are reviewed. The influence of design theory seems to be limited to the application of computer programmes introduction of economic measures of merit and designing of design tasks. It is suggested that literature on design theory should reach the design engineers more effectively.

Photocopied version of the original. Contents comprise of the following chapters: Ships categorised (types of ships, ships systems), Engineering fundamentals in ship design, Ship geometry and hydrostatics, Properties of shipbuilding materials, The strength and structure of ships, Ship hydrostatics and initial stability, Longitudinal stability and trim, General stability at large angles of heel, Submarine hydrostatics, stability and trim, Ship hazards and vulnerability: damaged stability, Ship resistance and powering, Propellers and propulsion systems, Ship motions in a seaway and Manoeuvrability and ship control.