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The scope of this work consists in analyzing the process of elevation of the on board extremity of a flexible tube denominated line laid on the sea floor by a ship for gas and oil transportation in offshore extraction. Frequently load suspension equipment installed in ships has to be adapted to perform operations for which it was not originally designed. Loads have to be manipulated following different trajectories in the inner ship space. In order to evaluate the success and safety of the operation a mathematical analysis of the mechanical problem must be formulated and performed. The present work describes the mechanical analysis of the forces and trajectories involved in a procedure to pass the final end of a flexible tube through the overboard pulley of oil exploration ship.

Seminar held 10 - 11 May 1977 in Oslo, Norway. Papers are Cut throat competition or cooperation in the tanker business The future of American and Soviet Shipping American shipping policy The Soviet merchant marine - looking ahead The American energy situation and the Arab intentions in the oil transport United States energy policy under President Carter Arab intention in oil transport and future developments Deep ocean mining and the prospects for bulk shipping Changes in international finance of shipping and ship building and related industries How can the Guarantee Institute assist ship owners - its influence on the shipowners activities during and after the crisis The flags of convenience and their implications to world shipping Flags of convenience registration - effects in developing and industrialised countries European ship building - which direction Greek shipowning outlook Quality assurance in ships of tomorrow

The use of moonpools in offshore technology is normally related to the hull opening in drilling units with the aim of protecting drilling equipment from environmental forces. Its design aims for the minimum motion of water inside the moonpool avoiding water impacts when lowering equipment. Several studies have been carried out to predict the water dynamics inside the moonpool. Analytical tools have been used to obtain a good evaluation of viscous effects. The moonpools have also been used as a device to reduce the motions of ships or oil platforms. In his context the use of moonpools in monocolumn type platforms was studied during the development of the concept. An alternative that has become viable in recent years is the use of numerical methods to evaluate potential parameters being only necessary simple experiments to obtain viscous data to complete the model. This work is a continuation of articles about the issue written before and intends to consolidate the calculation method of moonpool to monocolumn units.

Conf held in San Diego Sept 22 - 25 1975 Papers include The economics of solar sea power plants Anti fouling marine concrete Development of deep ocean work system Metals joining in the deep ocean The salvage of the Litton launching platform Underwater explosive cutting in ship salvage Wreck clearance in the Suez Canal Large object salvage system A new concept in design for a vessel to conduct marine research within the coastal zone History design criteria and construction of a high powered intermediate sized oceanographic ship Oceanographic research ship capabilities in ice Shipboard berthing - Athwartship and longitudinal The United States oceanographic research fleet - a perspective The use of semisubmerged ships for oceanic research Concrete structures for 2000m depth Drilling rig anchor release system - a new concept for hostile weather mooring operations Floating breakwaters - an idea whose time has returned Problems in underwater inspection of North Sea structures The technology transfer process - the case of the LNG tanker Computer mission simulation for parametric design of undersea vehicles Design and operation of two remotely manned undersea vehicles Electrical design considerations in modern commercial submersibles Navigation system used by submersibles in famous projects Search and rescue for submersibles - whats new?

This book presents stories of the recovery of sunken ships and deals with the technically complex craft of deep-sea salvage. Part One includes a short history of the subject, a description of the latest salvage methods and equipment, and some account of the techniques used to locate and mark a wreck on the ocean floor – a far trickier business than the layman might suppose. In Part Two the author describes eleven different typical operations in detail – including the Spanish Armada searches in Tobermory Bay, the raising of the scuttled German Fleet at Scapa Flow, the recovery of £2 million gold cargo from the Niagara in 1941, three deep-sea crashed aircraft recoveries (two British and one American), and two US naval submarine operations in mid-Atlantic (Thresher and Scorpion). Photos and sketches support the narratives as required, and each of these operations presents different points of absorbing technical interest.

Owing to the increase of bridges and offshore structures near ship's waterways as well as marine traffic ship collision accidents with these structures have been increasing. To prevent ship collision with these structures various kinds of protective devices are planned for which it is necessary to investigate the strength of the ship as well as the strength of the protective device itself. A new material protective device is used. In this paper the design procedure of 2 different size ships is introduced. In this procedure the minimum depth of the protection device which can avoid the collision between ship and bridge pier can be designed.

The growing numbers of large vessels along the coast of Northern Norway have increased focus on potential conflicts. Tankers and ships carrying pollutant cargo are the most debated but international use of the Northern Sea Route (the Northeast Passage) e.g. for transport of radioactive waste between Europe and The Far East is another concern. The backgrounds of the conflicts are the particular sensitive areas for the wildlife along the most used shipping lanes as well as high activity and concentration of fishing vessels. As a safety precaution the Norwegian Coastal Administration (NCA) has intiated a work where a new extensive Traffic Separation Scheme (TSS) is proposed for IMO outside the territorial waters of Norway. In this process Aalesund University College (AUC) was contracted to evaluate the nautical aspects and recommended alternative routes. AUC should also develop simulator scenarios where the different alternatives could be demonstrated in a full-scale shiphandling simulator. This paper discusses and conludes on nautical considerations related to different TSS issues such as: Navigation infrastructure Communication and surveillance infrastructure Towing and rescue resources as well as places of refuge Meterological and oceanographic conditions Enviornmental sensitivity Fishing and other maritime activity.

Ship Safety in Rough Seas is a research project started at KTH aiming to develop risk based models for the safety of cargo ships operating in rough seas. The idea is to combine modern risk analysis techniques with non-linear models for ship dynamics in rough weather. A limiting criterion for acceptable ship motions will be provided by the risk for cargo shift. The different problem areas in this project are defined and discussed together with some numerical examples.

Financial pressures are not unique to the US Navy other government organisations or industry. There is frequently a challenge to reduce costs and operate more effectively whether due to economic climate competitive forces budget restrictions or operational priorities. There are different paths to affordability and a host of techniques and approaches to reducing cost. This paper describes a technology development and fielding effort that leverages commercial standards and hardware to achieve affordability aboard US Navy ships extended for use across the Fleet and on a variety of ship platforms. The development of one of the various techniques FI (flexible infrastructure) focuses on life-cycle cost reduction during installation and back-fit of systems and components providing a common framework for equipment installation during initial installation and subsequent technology updates. FI uses foundation bulkhead and-or overhead tracks with standard interfaces layouts and attachment methods between the track and equipment. Using this system

Design aspects and service requirements with Sulzer RD76 and RD90 engines on ships of the Clan McGillivray class and on the Good Hope Castle and Southampton Castle are first described. Design was intended to facilitate maintenance and planned maintenance and overhaul are considered. Crewing of Southampton Castle and Good Hope Castle is discussed. Operational experience with the RD76 is described. There was only one serious breakdown at sea. Engine combustion equipment was checked thoroughly. The RD90 a new engine was less reliable and stops at sea are tabulated and discussed. Fuel and lubricating oil consumption are considered and cylinder liner and piston ring groove wear discussed. Future trends in engine design and operation are discussed.

The increasing interest in waterjet propelled craft and ships stimulated research activity towards the application of simulation techniques to the kind of propulsion systems driven by both high-speed diesel engines and GT (gas turbines). Mathematical models for the dynamic simulation of a planing craft and a waterjet propulsion system are presented. The models are in modular form in order to describe the various elements of the system as individual blocks taking into account their interactions. In this way it is possible to characterise the dynamic behaviour of both the single components and of the whole propulsion plant. The module of the planing behaviour of a craft is a new feature of the general dynamic simulation model already developed. With this new module it is possible to account for the resistance and trim variation during boat acceleration in order to properly catch the interaction between the planing hull and the propulsion system.

An exciting addition to the "Horrible Histories" series, these titles will tackle all the hot historical topics in a new full-colour format with durable cover. Beginning with the perennial favourite Pirates, Terry Deary reveals the terrible truth behind the lousy pirate legends and lies. So forget the brave heroes swinging from masts and the handsome young men sailing the seven seas for this is history as it's most horrible! Readers can decide who was the baddest of the bunch in the top ten of putrid pirates, discover why the women pirates were just as wicked as the men and learn to talk the patter of a Pirate. Plus there are foul facts on the ships they sailed, the punishments they suffered and the rules they lived by. Now the nasty bits are at your fingertips! 10 yrs+

The objective of this study is to obtain basic data for discussing the structural integrity of aged ships especially hold frames of aged bulk carriers. Firstly shapes of corrosion pits observed on hold frames of bulk carriers have been investigated. It was shown that the shape of the corrosion pits is a circular cone and the ratio of the diameter to the depth is in the range between 8 to 1 and 10 to 1. Secondly a series of tensile tests has been conducted to investigate the effect of pitting corrosion on tensile strength. It was pointed out that the tensile strength decreases gradually and the total elongation decreases drastically with the increase of thickness loss due to pitting corrosion. Thirdly a series of 4-point bend tests with structural models which consist of shell web and face plates simulating hold frames of bulk carriers has been carried out to investigate the effect of pitting corrosion on collapse behaviour and lateral-distortional buckling behaviour. Following the experiment a series of non-linear FE-analyses has been also made.

PMS (platform (or ship) management system) is considered to be the technology enabler to achieve crew reductions onboard modern naval vessels. The PMS carries out monitoring of machinery and auxiliary equipment manages production of electrical power provides decision support to the operator and integrates with the other vessel's systems (navigation etc.) through a common data network to form a global vessel computing environment. Designing a PMS for minimal manning requires the analysis of the interactions between the operator and the systems in all operating conditions. This is the objective of the HIS (human systems integration) a requirements-driven process influencing the design of the system. The features of the integrated PMS are discussed for the Littoral Combat Ships a series of high-speed modular vessels being built for the US Navy which will be manned by the smallest crew size without affecting the operational capability and safety.

This is volume 1 of a report in two volumes. Volume 1 contains a summary of design factors and vessel sizes in relation to port approach features. Volume 2 contains analysis and survey of ship behaviour studies and summaries of references. Part 1 on summary of design factors considers ship lane, bank suction, ships in channel bends, two ship interaction, stopping of vessels, turning of vessels, wind effects, currents, squat, vertical motions caused by waves and swell and operational factors. Part 2 on vessel sizes in relation to port approach features considers channel width requirements, depth requirements, turning circle requirements, and ship sizes.

This Code applied to all harbour authorities in the UK that have statutory power and duties. It is also strongly recommended that facilities outside of harbour areas such as berths, terminals and marinas should seek to have safety management systems in place which comply with this code. The Code establishes the principles of a national standard for every aspect of port marine safety and aims to enhance safety for those who use or work in ports, their ships, passengers, and the environment. It applied to port marine operations the well-established principles of risk assessment and safety management systems. It provides a measure by which harbour authorities can be accountable for the legal powers and duties which they have to run their harbours safely and help to discharge their obligations effectively.

The rationale for Port State Control is considered with basic principles aims objectives legal basis and implementation discussed. Comprehensive reference is made to the content and location of various IMO Guidelines compiled in order to assist Flag States Administrations in procedures for the control of ships. The establishment of regional agreements to facilitate Port State Control in specific areas is discussed with attention to the operation of the Paris Memorandum of Understanding (MOU) adopted (1982) by the Maritime Authorities of 14 European countries the Tokyo MOU (1992) for the Asia Pacific region and the Vina Del Mar Agreement (1992) for Latin America. Advice notes for ship owners and operators in preparing for Port State Control explain the requirements for ship documentation and certificates and commonly occurring deficiencies reported by the Paris and Tokyo MOU.

Safety against capsizing or assurance of sufficient stability is one of the important aspects of safety of ships at sea. Stability requirements are currently included in the IS code developed by IMO. However some say that these safety requirements are inadequate that they are mainly related to design and to not take adequate account of operational factors including the human factor. Recently the SA (safety assessment) method was put forward which is more comprehensive. FSA (formal safety assessment) is a formalised procedure of SA and has recently been recommended by IMO. However there are serious difficulties in applying FSA methodology to stability problems. In applying FSA methodology to intact stability problems hazards that may lead to the loss of the ship should be identified. Various hazards related to scenarios of capsizing are considered and possible methods of assessment of risk involved are discussed.

It is proposed that used oil analysis be used as an alternative to a periodic survey of bearing metals involving costly time-consuming and dangerous disassembly of marine diesel engines. Two vessels served as test ships for experimental oil analysis over eight years. Conclusions are that on crosshead type marine diesel engines the system oil analysis may be used as a condition monitoring based survey on the conditions that the bearing metal temperature records and the chief engineer's daily watching records refer to. When the system oil shows a particulate concentration of more than 10 WPC/ml as an average the system should be inspected in a special survey though the poor lubrication part cannot be identified by the ferrography DR method.

One of the dangerous situations for ships navigating in following and quartering seas is to encounter a group of high waves (or high run). Using statistical analysis of encounter waves both in the frequency and time domain the remarkable increase of groupiness in following or quartering seas is shown qualitatively as the function of V over T and number of waves in a high run. The degree of danger in encountering high run can be classified in the dangerous zone shown in the operational guidance and this result is useful in evaluating ship stability against capsize by probabilistic approach.