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The book provides key information on ship design and performance. It is divided into two parts - part 1 illustrates how a ship is designed from limited information supplied from the ship owners to the shipbuilders. The first chapters in this part deal with determining the main dimensions, how group weights are estimated and analysing capacities and hydrostatics for new vessels. Chapters 5 to 8 in this part deal with types of ship resistance, speed and power and chapter 9 examines preliminary design methods for a ship's propeller and rudder. Part 2, the first two chapters give particulars relating to to modern merchant ships and chapters 12 to 16 cover the various ship trials carried out by the ship builder on a newly completed ship. Chapters 17 to 19 explain the problems of ship squat and ship interactions in confined waters. Chapter 20 looks at ship vibration and methods to reduce it. Chapter 21 discusses performance enhancement in ship-handling mechanisms (rudders, retrofits etc.). Chapter 22 considers improvements in propeller performance.

Int Conf held in London on 15-16 March 1989 Papers are A personal perspective on the growth of the management industry over the past 30 years Who manages what and for whom Is the recent revival in world shipping good or bed news for the ship management industry Who will be the ship manager's customers in the 1990's and what services will they require "In house" ship managers; do they have a future as independants Liability and the ship management industry Ship management services The insurer's perspective Servicing the ship management industry The supplier's perspective What level of ship management fees can ship managers justify Safe ship management The ship managers role Tommorrows crew Where should they come from Where will they come from What training will be required and whose responsibility should it be The ship management industry - the ship master's view The BIMCO ship management form a boom or a burden Reducing shipping investment risks The ship manager's perspective Ship management services A banker's perspective

This book, being Volume 1, contains generic ship design theory and construction information without application to specific ship types (which are contained in Volume 2). The purpose of the book is to assist ship designers and shipbuilders make better design decisions and enable naval architecture students to learn about ship design and construction and serve as a reference when they enter the marine industry. Contents comprise of the following chapters: The marine environment (which includes ocean currents, waves, tides), The marine industry, The ship acquisition process, The ship design process, Engineering economics (including money, taxes and costs), Mission and owner's requirements, Regulatory and classification requirements, Contracts and specifications, Cost estimating, Parametric design, Mass properties, Computer based tools, Design/production integration, Human factors in ship design, Safety, Arrangement and structural component design ( including structural arrangement, materials, loads), Analysis and design of ship structure, Reliability-based structural design, Hull materials and welding, Composites, General arrangement design, hull outfit and fittings, Ship preservation, Machinery considerations, The shipbuilding process and Shipyard layout and equipment.

The primary aim of this guide is to provide a compact reference work for the use of ship structural designers. It is also intended for use by research workers in the area of ship structural analysis and allied fields. Chapter 1 gives an historical introduction to ship structures; Chapter 2 discusses the motions of ships and loading conditions which form the basis for the design of ship structures. Chapter 3 outlines those elements of vibration theory that are considered to be of most interest to ship designers, presents results from vibration theory which may be of immediate application in design problems and relates these directly to the problem of ship structural dynamics. The remaining 10 chapters contain the structural analysis portion of the Guide. Chapters 4, 5 and 6 contain analytical data on plating under different kinds of loads, e.g. in-plane and lateral, together with a discussion of the limitations and range of applicability of the theoretical results. Chapter 7 is concerned with problems with the design of bulkheads, bottom structures and deck plating that have to be considered by the ship designer in proportioning scantlings. These include problems involving such topics as grillage analysis, minimum weight design, and stress concentration at points of load concentration. Chapter 8 analyses stress concentrations around openings in plating and introduces shear lag methods of resolving the problems. Chapter 9 deals with the methods of box-girder analysis that are useful in studying the longitudinal strength of the ship. Chapter 10 discusses the ship's transverse structure and includes an introduction to plastic design methods for frames. Chapter 11 gives a detailed treatment of connections, Chapter 12 deals with the manner in which temperature may influence the load carrying capacity and deformational characteristics of the ship's structure. The last chapter is a broad survey of mechanics of materials with particular emphasis on its role in ship structural analysis.

The role of information technology (IT) in maintaining ship safety and controlling operating costs is discussed. Current ship safety regulations and procedures are reviewed and standard ship safety record and data formats are examined. Efforts by the International Standards Organisation (ISO) to develop a ship safety record are highlighted and a common IT platform - the Integrated Shipboard Information Technology (ISIT) platform is discussed.

Book produced to publish papers that were presented as part of the Jubilee 40 years Anniversary meeting for the Netherlands Ship Model Basin. Papers as follows: 'The NSMB - 40 years of scientific industrial service in marine technology'; 'Contributions on some current problems of ship resistance'; 'On wind resistance'; 'Recent developments in marine propeller hydrodynamics'; 'Cavitation and its detrimental effects', 'Applied mathematics in ship hydrodynamics'; 'Fish propulsion'; 'Manoeuvrability, state of the art'; Some recent advances in the prediction of ship motions and ship resistance in waves'; 'Retrospection on 15 years NSMB seakeeping activities'; 'Ocean technology'; 'Some developments in the area of strength and vibrations of ships'; 'Propeller vibratory shaft forces affected by design and environmental conditions', 'Computer-aided ship production, management and control' and 'Design and operations'.

The aim here is to help prevent ships going aground because of ship squat effects and to give the reader an awareness of the dangers of squat at too high a ship speed in shallow waters. Ship squat is defined as the decrease in under-keel clearance as a ship moves forward after being static. Ship squat is made up of two components - mean bodily sinkage plus a trimming effect. The former is caused when the ship drops vertically in the water due to a drop in pressure from the water return flows as a ship passes through water. The latter means that the ship also generally trims forward or aft. A formula for widths of influence is given. Minimum acceptable static ukc and dynamical ukc are discussed. The various components of ship squat are covered followed by worked examples. Tables and graphs of ship squat against ship speed are given. Squats for vessels with static trim are covered. Squats at the other end of a vessel and mean bodily sinkage are evaluated. The summary and conclusions show benefits of being able to predict ship squat.

Symposium on the application of ship motion research to design National Physical Laboratory

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.

The contents of the book are arranged into 7 parts. These consist of: Introduction to shipbuilding (basic ship design, dimensions, form and types), Materials and strength of ships , Riveting and welding, Shipyard practice (ship drawing, loftwork, plate and section machining, prefabrication and launching), Ship structure, Outfit and International regulations (IMCO, tonnage, load line rules, fire protection). This fourth edition covers new requirements for tanker conversion under MARPOL convention, deals with developments in roll-on/roll-off design and double hulls.

This paper describes the phenomena of 'Ship Squat'. When a ship proceeds through water, water is pushed ahead of it. In order to not leave a 'hole' in the water, this volume of water pushed ahead must return down the sides and under the keel. The streamlines of return flow are speeded up under the ship. This causes a drop in pressure, resulting in the ship dropping vertically in the water. As well as dropping vertically, the ship trims forward of aft. The overall decrease in the underkeel clearance forward or aft is called 'Ship squat'. It discusses its growing importance and lists the signs that a ship has entered shallow water. The main variables are discussed, together with one global formula for all conditions and two enveloping formulae for quickly estimating the value of ship squat. In conclusion, it is shown that ship squat is linked not only with ship safety but also with ship economics.

Research into ship performance in actual seas have been taken up recently. The aim of this research is to estimate ship performance in actual seas and to apply this to the building of a good performance ship. Oceangoing simulation is one of the methods used to estimate a ship's performance in actual seas. In this simulation sea states and ship conditions have to be simulated more exactly and rationally. The nominal loss of ship speed induced by added resistance in waves and other forces acting on ship hull is usually taken into consideration. The deliberate loss of ship speed and course change is often ignored. This study proposes a new oceangoing simulation considering deliberate speed loss and course change. A captain changes ship speed and course for safety in rough seas when the occurrence probability of the critical condition of the ship e.g. deck wetness propeller racing and slamming is higher than the critical probability. The occurrence probability of the critical condition is clarified from ship motions in an encounter sea condition calculated by using the EUT method. The joint probability distribution of ship speed and course can be plotted as a polar diagram in any sea conditions consisting of two different wave directions of wind wave and swell. Using this polar diagram a new method is proposed of oceangoing simulation with ship handling as the ship goes toward the original course as fast as possible. The oceangoing siX36881

The two volumes provide aspects of both ship theory and practice, from ship design to the integrated design process. The first volume (chapters 1 to 9) covers hydrostatics and strength and introduces the tools used by the naval architect, mathematical techniques, instruments and the computer. It also discusses safety issues, structural strength, the provision of stability and flotation and launching and docking. Reference material on the environment and how ship and human interaction with it affects design, is also included.

The two volumes provide aspects of both ship theory and practice, from ship design to the integrated design process. The second volume (chapters 10 - 16) expands on the concepts covered in Volume 1, dealing with ship dynamics and design, including hydrodynamics, manoeuvrability and seakeeping. It concludes with a discussion of maritime design and of particular ship types.

The potential development of a large nickel deposit in Labrador is likely to require winter shipping through a highly dynamic ice environment. The resulting ice features consist of many miles of multiple layers of small ice floes. Ship performance in these ice conditions has not been studied in depth. The Canadian Coast Guard organized a voyage for their ship 'C.C.G.S. Henry Larsen' through these ice conditions in March 1997. During this trip data was collected on ship performance and ice conditions. The ship trial was followed by a series of resistance and propulsion experiments in the ice tank at the Institute for Marine Dynamics to establish the correlation between the model and ship performance. The model experiments were carried out with two different hull-ice friction coefficients. This paper presents the results of the model experiments. It also compares them with the measured ship performance. It concludes that it is possible to use model experiments to predict the performance of a ship in multiple layers of broken ice.

An introductory review is provided of the current state of the art in the field of modern ship design. First the main changes in classical and modern design are looked at covering general changes in ship design described chronologically documentation and prediction of changes in designs of future ship types. Research and development for ship preliminary design are considered. Optimisation of the ship design is discussed.

The book covers the following: Structural strains in ships, Structural details, Shell plating, Bulkheads, Engine seatings, The after part and fore end of the ship, Merchant ship types, Classification societies, Theory and calculations, Moments, centres of gravity and buoyancy, Metacentric stability, Trim and Resistance and propulsion.

The subject of Engineering Economics and Ship Design has been treated in a general way as the intention is not to include any extensive coverage of formal economics or detailed ship design, but to show how the two are related. The primary purpose of the book is not to assist decisions about whether to build, when to build or where to build, but rather what to build. The report is divided into three parts: The supply and demand for marine transport and shipping's economic environment; The detailed mechanics of making engineering economy calculations; and Application of the principles to ship design (which also compares alternative ship designs, and looks at the optimal ship).

Contents include chapters on the following: stream-line motion, skin-friction resistance, eddy-making, waves and wave-making, ship model experiments, ship dimensions and speed, prismatic coefficient, cross-channel steamers, destroyers and high-speed vessels (motor boats, flying boat hulls), coaster vessels and shallow water vessels (river steamers and barges).

The book explains the principles of ship husbandry together with the reasons behind them, the resources and techniques appropriate to the actions required. Contents comprise of the following sections: Rules for good ship husbandry, Cleanliness, Prevention of malpractice, Correct use and stowage of equipment, Preventive and corrective maintenance and Observance of safety precautions. Appendices contain specific information and suggested products for use.