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The advent of HTS (high temperature super-conductors) has provided impetus for developing rotating synchronous machines for both marine and industrial markets. Since 1991 AMSC (American Superconductor) has been developing super-conducting machines. In modern ships propulsion systems are so large and heavy that in many applications they force the rest of the ship to be constructed around them. HTS propulsion motors provide relief from this constraint because compared to conventional motors HTS motors are more compact lighter weight more efficient quieter (lower in acoustic and structure-borne noise) and lower cost (acquisition as well as operational costs). HTS motors look very attractive for large-size low-speed propulsion applications. AMSC is currently factory testing a 5 MW 230-RPM ship propulsion motor for ONR (the Office of Naval Research). This is a prototype for an ONR 36.5 MW ship propulsion motor that will also be designed and built by AMSC for delivery in 2006. HTS motor technology is maturing rapidly and both Naval and marine ship drive applications will greatly benefit from these advances. The status of ship propulsion motor development is presented as well as its unique characteristics for ship propulsion.

Long-term time-series data of sea-states are required for the more reliable and accurate evaluation of oceangoing performance of ships. These time-series data can be usually provided as hind-cast data. However the hind-cast simulation is deterministic and spends much time and much cost. Sea-states with the same statistical property as real sea-states are required. To address this problem this paper suggests the methodology of the stochastic sea state simulation by the convolution integral of an independent component of the white noise and a combining matrix with time lag. The validity of this model is confirmed with the hind-cast sea-state data in the North Pacific Ocean.

This collection of studies covers many important aspects of the efficiency of sea transport: ships, seaports and the interface between them. The problems are described and assessed with a particular emphasis on quantification and on methods which are susceptible to numerical treatment. Several fully worked examples are included. This book is a collection of papers with the general theme of efficiency in sea transport. 1. The regulation of international sea transport 2. USA legislation and the Foreign shipowner: a critique 3. Investment in shipping and the balance of payments: a case-study of import-substitution policy 4. Economic criteria for optimal ship designs 5. The economics of automation in British shipping 6. The turnround of cargo liners and its effect on sea transport costs 7. Towards an economic appraisal of port investments

The book is arranged in two parts. The first deals with aspects relating to ship strength and includes chapters entitled: The structure of a trochoidal wave, The ellipse of inertia, Statical shearing force and bending moment, Shearing force and bending moment including the effects of heaving and pitching, The determination of the stresses in the structure of a ship, Deflection of beams and of ships and Transverse strength. The second part deals with Rolling and includes chapters on: Rolling in still water, Methods of measuring angles of roll, and stresses on masts due to rolling, Rolling amongst waves, model experiments on rolling and Means of reducing rolling.

Three ways of reducing NOx emission are proposed - (1) reducing the emission from the engine (2) reducing the engine power by improving propulsive efficiency and (3) reducing the total NOx emission by selecting ideal combinations of ship type size and speed. NOx and other emissions are measured on board three training ships of different size (2342 tons 877 tons and 12 tons) running at various speed and load combinations to look at the effectiveness of these three methods. After a look at the methods for evaluating NOx the experimental equipment and method are considered. Next the results are discussed.

The aim of this study is to consider, analyse and recommend policy options to further the objective of reducing the harmful environmental impact of emissions of SO2 and NOx from ships in European waters.

The Mobile Offshore Base (MOB) is designed to transit to anywhere in the world in the required time frame. During the research of MOB dynamical properties a non-linear system modeling and optimization tool using Reverse MI/SO (Multiple-Input / Single Output) techniques was developed and applied to different aspects of MOB dynamics analysis. MISO is based on statistical signal processing of the recorded time histories of the excitation and response of the non-linear multi-degree-of-freedom system. In this paper the model testing data in beam seas is analyzed using the Reverse MISO technique. The authors expected to identify significant nonlinear roll damping for the nonlinear integro-differential equation as is the case with ships. Instead a significant nonlinear heave damping related with the nonlinear relative heave velocity has been found during the analysis. This once again acts as a reminder that due to the strong nonlinearity of MOB motions in the severe sea ways nonlinear analysis methods such as Reverse MISO are important and need to be applied in order to fully identify the dynamics of the MOB motion.

The purpose of this guide is to place before those serving on ships engaged in the bulk carriage of liquid chemicals and liquefied gases recommendations appertaining to recognising good practice in the promotion of safety of operations, at sea and in port. The guide deals primarily with operational matters. Sections cover use of cargo information, overall precautions, fire hazards and precautions, handling of cargo and ballast, gas-freeing and tank cleaning, work in enclosed spaces, liquefied gases, corrosive liquids, health hazards and precautions, chemical reactivity hazard and precaution, static electricity, fire fighting and life saving. The index and supplementary index of chemicals at the back refer to data sheets which are held in Volumes 2 to 4.

The ABS (American Bureau of Shipping) and the US Navy have been working together over the last few years in a measured initiative to develop and apply classification Rules for naval vessels. The first complete set of Rules resulting from this effort was embodied in the ABS Guide for Building and Classing High Speed Naval Craft. It laid the foundation for the subsequent development of the ABS Rules for Building and Classing Naval Vessels. In addition in its own right it has been used in the classification of the US Navy SEA FIGHTER SWIFT Torpedo Recovery or Security Craft US Naval Academy Training Boats the Egyptian Fast Missile Craft Egyptian Fast Patrol Boat Omani Patrol Boats and Canadian Navy Patrol Boats. In addition the High Speed Naval Craft Rules were used as a core of the ABS classification requirements for the US Navy's Littoral Combat Ships both the monohull and trimaran versions. Finally this Rule set will be used to class the US Navy Joint High-Speed Vessel and the US Coast Guard Deepwater Fast Response Cutters. This presentation summarises the approach to applying this tool on naval craft and addresses how the requirements fit together. In addition valuable lessons learned from the ongoing applications are presented.

The 1974 Helsinki Convention made all sources of pollution in the Baltic Sea area subject to regulations. In 1992 a revised version of the Convention was adopted along with a new Joint Comprehensive Action Programme. The general regulations including their scope and their fundamental principles/obligations are looked at. Pollution from land-based sources pollution from ships waste disposal at sea offshore activities and combating marine pollution are each considered. Nature conservation/biodiversity reporting/information exchange the establishment of the Helsinki Commission scientific/technological co-operation and the final provisions are each touched upon in turn.

The successful carriage of cargoes by sea depends much on the skill, care and energy exercised by ships' officers and shore loading and discharging staffs. All officers should be familiar with the general principles of stowage and be specially conversant with handling of cargoes usually carried by the Companies' vessels. The information and suggestions contained in the following pages will, it is hoped, be of assistance to officers. Contents cover general supervision of cargo loading, discharge and preparation of cargo spaces; handling and stowage suggestions; refrigerated cargo; stability, trim etc; sundry other matters such as ventilation and bills of lading; surveys; and information regarding handling cargo at various ports. An appendix at the back includes ship plans.

An alternative to the permanent magnet (PM) motor - the medium speed induction motor with a gearbox - is examined. Firstly the power requirements for typical warships and the motor performance boundaries are each outlined in turn. Next direct drive and geared motor power density is considered followed by drive reliability and drive noise. Some alternative drive configurations are evaluated for an escort sized ship. The relationship between drive system configuration and gearbox layout is addressed and related to the operational profile of warships. The size weight and cost of direct drive and geared electric motors are compared. The efficiency of motors and control system is looked into. After this the arrangements of geared motors for escort and carrier sized ships are presented.

The Global Maritime Distress and Safety System (GMDSS) applies to passenger and cargo ships over 300 TGT on international voyages. However it will affect smaller craft in a number of ways. Onshore facilities must offer GMDSS requirements but additional systems will be voluntary. Any financial cutbacks will therefore hit these systems rather than the GMDSS. It is also likely that some vessels such as fishing boats will be required to have some sort of GMDSS under regulations that cover their industry. Five other methods of transmitting a distress signal are reviewed: Emergency Position Indicating Radio Beacons (EPIRB) Navtex Digital Selective Calling (DSC) Inmarsat and Search and Rescue Radar Transponder (SART). The question of training and certification for small craft using GMDSS is also considered.

The integration of lifting foils with a Ride Control System (RCS) can provide a significant improvement of both the efficiency and the seakeeping of high-speed ferries. Lifting foil RCS solutions extend the overall performance of the vessel beyond that of a displacement hullform without resorting to expensive fully foil supported hydrofoil solutions. VT Maritime Dynamics Inc (VTMDI) has developed simulation and integration tools that permit optimisation of vessel performance and efficiency with realistic lifting foil design constraints. Design tools range from finite element analysis and performance simulations to seakeeping simulations and computational fluid dynamic models. This paper discusses the lifting foil design process and its application to the trimaran "Dolphin Ulsan" designed and built by North West Bay Ships (NWBS) of Australia.

Operation of load-on-top systems for reducing oil pollution from Norwegian tankers in accordance with the requirements of the IMCO International Convention for the Prevention of Pollution from Ships 1973 was studied by detailed sampling and analysing of discharge waters and tank sludge from in-service vessels and by similar experiments on a working model tank system. The results are used to discuss - successful operation of LOT; improvements to current systems; and sytems layout on board and documentation. Guidelines for the design and operation of newbuildings considered

NAVOCEANO has traditionally produced STOICs (special tactical oceanographic information charts) that provide the warfighter with information superiority by describing the hydrographic or oceanographic nature of the battlespace in paper chart or raster chart format. However the present STOIC product cannot be viewed simultaneously with other geospatial data such as route plans order of battle or terrain information. In addition the Navy is now moving over to DNCs (digital nautical charts) and plans to be fully operational with ECDIS-N (electronic chart display and information systems-Navy) on all ships by 2004. To support these new geospatial capabilities future NAVOCEANO products will be based on standards-based geospatial information. The new electronic product line will exhibit full functionality of ECDIS-N the Nato warship ECDIS and other Tactical Decision Aids. It is outlined how NAVOCEANO will meet the challenge to modernise its tactical support by updating its production line.

The main ship's diesel as an object of loading is a controllable unit. The processes of diesel loading are the constituents of transitional process of ship's motion. It can be assumed that the purposive function of control over a ship must be formed by the compromise combination in it of the following principles - security quality and economy. The principles of formation of the purposive function of control over loading regimes of the main ship's diesel are discussed with equations provided.

The position of the Royal Australian Navy (RAN) with respect to control of waste and pollution at sea is discussed. Environmental Management Plans (EMP) have been developed for ships and the RAN attempts to comply with international anti-pollution legislation including the designation of the Great Barrier Reef region as a Particularly Sensitive Sea Area and the Montreal Protocol on ozone depleting substances. RAN waste disposal policies in the areas of oily waste sewage greywater garbage (including food waste) ballast water ozone depleting substances tributyltin (TBT) oil spill reporting and management and atmospheric emissions are discussed. The RAN Marine Pollution Control Project is concerned with the equipment acquisition retro-fit programme for sewage oily waste garbage and ODS within the Fleet. The Aeronautic and Material Research Laboratory (AMRL) is carrying research into ship hull protection and navy environmental support for RAN. Australian federal government maritime environmental initiatives and developments outside Australia are reviewed.

Higher education in Marine Technology began in Genova in 1870 when the Royal School of Naval Architecture and Marine Engineering started with the aim of increasing the scientific knowledge of ship designers and ship engineers for both the Italian Navy and the Italian merchant marine. The history is described. Since then teaching and research activities have grown in close relationship with the regional economic maritime sector. Recently topics related to small ships and pleasure craft were added to the traditional courses in the La Spezia campus. Although the Department has close relationships with Italian and foreign industries universities and research centres it is believed that the increase of teaching and research partnerships will produce greater benefits for the students and also for the organisation. It is further believed that a better knowledge of the education systems of other countries is crucial.

The stability of ships and ocean vehicles in waves may be quantified by a transient capsize diagram which is a plot of wave period against wave steepness showing the combinations which cause capsize. It is argued that a plot of wave steepness against wave period showing the combinations which cause capsize is a well-defined measure of the stability of a ship or ocean vehicle in waves provided the conditions are transient that is the vessel is initially in relatively calm water and is suddenly hit by a train of regular waves. This conclusion is a consequence of recent developments in dynamic systems theory. Such transient capsize diagrams can obviously be obtained by model testing; it is also argued that they could be obtained by computer simulation on contemporary desktop computers taking advantage of recent developments in non-linear strip theory.