The whole process of design and further operation of the commercial vessels have been subjected to the significant changes during past decades. All of those changes together with the serious impact they have on the intact stability performance of vessels, have motivated the specialists of the IMO to develop the second generation criteria of intact stability. Among the most important modes of stability failure, considered primary, we would note the pure loss of ship stability, broaching-to and parametric roll resistance.
The stability criteria addressed in this publication have been designed in a multi-layered structure, with the first two layers consisting of level 1/2 vulnerability criteria mainly used for the preliminary checks of the risk of dynamic stability failure during the design stage. The present document describes the valuable contribution of the US specialists to the development of those criteria including all stability failure modes. Sufficient level of the intact stability of the vessel is the most basic and important requirement.
The working group dealing with the development of the second generation criteria for the intact stability of ships, has outlines three major modes of stability failures. One of the modes is the stability of the vessel under dead-ship conditions, as defined bi the corresponding SOLAS regulation contained in II-1/3-8. The other two modes cover the restoring arm variation and maneuvering related problems...
The ship survivability is directly related to the requirements governing the intact/damage stability of the ship. It should actually be noted that the intact survivability of the vessels has received relatively more attention. The safety of the passenger ships has always been considered a prime concern for all regulatory authorities. There are several established and proven ways of assessment of the damage stability of the ships, including the probabilistic, deterministic methods and the real-time simulation.
The main purpose of the present study was to address the further development of the ship stability software using the MATLAB program on the basis of the real time simulation, i.e. third approach, of the dynamic behavior of the damaged ship at waves. The particular vessel called "Sarawak Fast Ferry" has been specifically chosen to perform the parametric study for the further application of the DSP, standing for the Damage Stability Program, which, in turn, has been developed and introduced.
The experiment has been conducted by means of the image processing and the results obtained during the experiment showed a remarkably good correlation to the simulation results. Subject results have also shown that the loading conditions and height of the waves are the most important and influencing factor to the stability of the vessels...
The content of this volume is mainly based on the results obtained in the course of the international Workshop which took place in Berlin and dedicated to creating of the shapes in both naval and civil architecture. The authors of the paper are presenting the very final version of the fourteen articles that have been presented at that time together with four relevant appendices.
Subject workshop was intentionally held to lay the certain basics in a comparative study of the history of technical knowledge in two above mentioned disciplines. We know that the naval architecture is treating the conception, design and subsequent realization for the maritime structures. The subject of creating shapes was considered a focal interest point for the comparisons carried out between two above mentioned disciplines due to the important role it plays in development of the objects.
The discussions and presentations that took place during that workshop and then included in this volume in the form of results are following such objectives as collection and documenting of the sources of shape creating-related knowledge, classification of the procedural and practical knowledge, enumeration of the important milestones, placing priorities related to the design and construction of the objects, relevant historical changes, comparison of different styles and methodologies of shape design, terminology, real life case studies etc.
The ship disasters that occurred in the past all serve as reminders to the professionals of the maritime industry of the serious need for the cost effective enhancement of the safety and also as strong indicators of the gaps existing there in the stability safety of the vessels. The latter problem is actually very complex, and practically meaningful solutions to it can be feasible only in case of close international co-operation and combining the efforts made by all members of the maritime community.
A CRP, standing for the Collaborative Research Project, was launched some thirty years ago as a response to the above mentioned problem. The authors of the present publication have included selected and most valuable technical materials obtained from the first four CRP workshops. The book contains nearly fifty documents representing all currently available professional expertise related to the stability of the vessels, spanning seventeen different countries of the world.
All of the papers included in this volume have been arranged in four groups, dealing with the stability of the intact ship, stability of a damaged ship, covering the special problems of ship stability, and addressing the impact that stability has on design and operation of the vessels. Definitely must-have book for all those people who wish to be kept updated with all recent happenings in the field of contemporary naval architecture, and ship stability in particular.
The present book is very important and useful because of the approach applied by the author to the problems relating to the loss of ship stability by means of the study of different operational aspects together with the dynamic ship behavior in severe condition of the sea and offering a complete picture of the selected modes of stability failure not currently covered by any criteria or applicable regulation.
The original motivation for the idea that has driven subject approach and the requirement to address the assessment of the ship stability is coming from numerous observations on losses of stability and capsizing of the ships. Though there are several regulations in force that all refer to the stability of the vessels, so many ships continue to loss their stability and capsize.
The subjects elucidated within this volume represent parts of the works relating to the critical importance of the assessment of ship stability and fit into the complex research system relating to the intact stability of the vessels, and particularly to the failure modes and how the proper assessment of the stability might prevent the possible losses. Five chapters of the book provide the general information and provide the historical background and analysis, cover the failure modes including ones in the severe conditions, and shed some light on the possible improvement in the field.
Over the past several decades there have been many significant changes in the maritime industry. Vessels of today are much bigger and their speeds are higher, their manning has been reduced; there are now so many types of ships including newly introduced ones, for example hovercrafts; ferries carry much more passengers and vehicles than in the past.
And even taking into account that people may now perform much quicker and much more accurate assessment of the ship stability and strength of the ships' hull together with the maneuvering and powering of the ships and their motions at sea by means of the very complex and specialized computer software, the basic concepts of the naval architecture remain unchanged and are valid as ever.
Some very rapid technical advances have been made in the field of the ship design, ship construction and ship operation, and many of them directly relate to the effectiveness. This is mainly owing to the higher efficiency and lower costs of the computers and proliferation of the available information.
This book of ship's theory consists of two separate volumes providing readers with the coverage of all important aspects, including trim and floatation, ship stability, potential hazards and protection of the ship, hull girder, structural design of the ship and associated analysis, launching of the ships and their docking, powering, seakeeping and maneuverability, major design features and so many others.
Naval officers having some basic mathematical ability can easily make themselves familiar with the fundamental principles governing the design of the vessels and the most commonly used calculation methods; however, those willing to become naval constructors would require long and very patient apprenticeship of the shipyard.
The naval architecture addresses such the problems as how to make a vessel sail and carry weights, how to make the vessel stand right at sea and obey the commander, and go easily through the waves at a given speed, in fact everything connected with the construction of the vessels and prediction/calculation of their behavior at sea.
In fact, shipbuilding itself implies giving the materials of which the vessel is to be made of all the shapes, forms and dimensions, as well as strength and power characteristics required to make them fully comply with the conditions that have been already calculated by the naval architects. he naval architects, shipbuilders and marine engineers are representing three professional skills.
Their duties shall be performed successfully so that the duties of the newly built vessel may also be performed in a successful manner. All of these duties are considered essential but they do not have to be performed by three separate people... Have a look into this rare and classic book, you will not get disappointed, it is much more than a regular textbook.
As implied in the title of this booklet, it is dedicated to the stability of the fishing vessels. The stability of subject vessels is something people commonly depend on for both their lives and livelihood. Their actions and decisions they make is what keeps their ships safe. It shall be noted as necessary that even it is a very safe vessel complying with all requirements of the applicable rules, the wrong and poor decisions related to the operation can easily result in the loss of stability and even capsizing of the vessel.
The present guide is intended to help the crew members of the fishing vessels and all people sailing on them or involved in their design and construction properly understand the most important elements directly influencing the stability of the fishing vessels as well as the critically important hazards that subject vessels are commonly exposed to. Understanding all factors reducing stability of the vessels will help people in making right decisions and taking right actions to keep their vessels safe.
The main content of the booklet has been arranged in two big sections. While the first section of the title describes the whole importance of stability covering its basics, acting forces and characteristics, the second section has been fully dedicated to the stability hazards that the readers shall look out for, such as the downflooding, overloading, water ingress, and preventive measures...