The content of this volume was written based on the decades of experience of the author as well as his years of lecturing in the university. Since the subject lectures were left unpublished for so many years, the decision was made by the author to compile this perfect book and provide all information and knowledge needed by and useful to the students, in a single and comprehensive volume.
All of the calculations are duly explained in a way making them understandable to the students at all levels. The content is divided in three parts, the first one dealing with the areas, volume, and center of gravity, giving some very general considerations on the subject. The second part of the book is devoted entirely to the ship calculations. The third part addresses the strength of ships together with all associated calculations.
As you can see, the publication was released more that a century back. However, it is still recommended to the students, due to the fact that the theoretical basics of the ship design and construction have not changed. And, the explanations given by the author in his work are somewhat more clear and easier to follow, understand, and apply than the ones in the books being released today.
This is a quite compact but very informative and useful publication providing clear explanations of the shear forces acting on the ship hull and the bending moments resulting from that. The subject definitions actually form the basis of the ship mechanics and lay in the foundation of any strength related calculations. That is why it is critically important for the ship designers and shipbuilders to have good and thorough understanding of them.
Written by the professional captain, the document will be of great use for the people who are not involved in ship design, but rather for those in need of having general understanding of the topic. As we know, the shear force is the one tending to shear, or break, a beam perpendicular to the major axis of that beam. For the purpose of the relevant calculations, the hull of the vessel is normally considered a beam.
The bending moment, in turn, is a sum of all moments that try to alter the beam’s shape. When the vessel is afloat, resting on the surface of the water, the longitudinal deflections will be experienced by the hull; they are caused by the uneven weight and buoyance distribution along the hull length. The subject stresses are always there regardless of the ship loading, and cannot be avoided.
Over the past decades, the members of the Ship Structure Committee have collected and analyzed extensive service cases of the unsatisfactory vessel designs concerning their structural part. The material contained in the document is intended to help the ship designers, including both naval and commercial ships, to specify the cost effective and technically sound details. The details provided in the pages of the present guide combine the service experience with the costs of fabrication.
There are also many data tables, diagrams, pictures and other supplementary materials intended to help the ship designers when selecting the appropriate details of the structure. First of all, the authors provide a brief overview of the sample failures of the ship structures, structural tolerances and material fatigue, as well as general philosophy of the ship design.
The performance of the details is covered in the separate chapter, followed with the information on the estimated man-hours needed for the fabrication. Several practical recommendations conclude the main part of the guide. There are also three appendices with the additional information making the guide even more useful.
The world famous Titanic was considered by so many people, including the professional ship designers, naval architects, and shipbuilders, to be an absolutely unsinkable vessel. Featuring the efficient and redundant shipboard safety systems based on the very latest technological achievements of that time, the vessel was not even considered to possess a full complement of the lifesaving appliances.
As we know, the sad truth is that her maiden voyage resulted in a collision with the iceberg leading to the loss of thousands of people including passengers and crew members. This catastrophe is deservedly treated as one of the most tragic maritime disasters in the history. The author of this book wanted to analyze the entire project of building this ship, from the design stage and up to the launching, to reveal and show the compromises that were made at the beginning of the project, eventually resulting in the flaws.
One of the features of this publication is that it will be equally interesting to the ship designers and the IT people since the author made every effort to show how the lessons obtained from this catastrophe could be applied to the various IT projects, as it happens that the designers claim and think they have launched a truly perfect solution…
The content of the publication is focusing on the most important areas of the preliminary ship structural design, presenting the relevant information in clear and easily understandable manner. The authors have covered the critical aspects of the design together with the general requirements as well as standard established formats.
In the meantime it shall be understood that the dimensions of the vessel and sizes of all structural members involved are directly affecting the decisions made during the design process. One of the advantages of the approach applied by the authors of the volume is that it may be used with different ship types.
In addition to that, subject approach will allow ship designers to get to the optimum structures in accordance with their practical measures of merit. There are three structural design levels and the present publication focuses on the second level which is considered a central one.
The concept design is linked to the geometrical characteristics of the structure while the preliminary design is applied to establish the structural dimensions, or so-called scantlings of the essential structural members. Finally, the detail design deals with the local matters including openings, welding joints, local reinforcements etc.
The present publication was written the address the various areas of the ship hull construction, covering literally everything starting from the types of ships and materials used for construction, and up to the welding technologies applied and quality control. The material is arranged in a very logical way and deals with the structural arrangement of the vessels featuring transverse and longitudinal; systems of framing, on the basis of the calculated service loads.
The author provides detailed and understandable explanations of the essential structural elements of the hull together with the most commonly used structural sub-assemblies. The construction of the ship’s double-bottom has been presented in detail along with the fore- and aft-end structures, midship section and other critically important areas. All materials normally used for the ship construction have been covered, including steel, FRP and aluminum alloys, with particular attention paid to the preparation of the construction materials, cutting and joining techniques, welding etc.
The formation of the residual stress in the hull structures has been addressed with the focus made on the buckling of thin metal panels caused by the welding. In short, all aspects of ship hull construction have been covered including the methods used for the nondestructive examination of the metal surfaces and welding seams.
The content of this publication prepared by the group of leading experts is intended to describe toe newly introduced methods applied to model the machine dynamics used in today’s offshore industry. Subject methods are normally based on the rigid FEM (i.e. finite element method) – this method is utilized when addressing the link deformations. In addition, they are also based on the homogeneous transformations – in turn, this one would be applicable to the dynamics of the multi-body system.
The authors of this book provide a good introduction to both methods so that the readers can have a clear idea of the associated principles. The models that are selected to model the above mentioned dynamics are subsequently verified through the special FEM-based software. Some of the additional calculation methods are also applied.
The math models of the offshore machines, for example the BOP gantry crane, or the machinery used for laying pipes, have been included by the authors to better illustrate the theory. Additionally, selected numerical operation simulations have also been provided. The publication will of particular interest to the designers of the various offshore facilities.
The types, sizes, functions and arrangement of the modern merchant fleet vessels vary considerably. Among these vessels there are passenger vessels, cargo vessels and vessels of specialized types suitable for the particular assignments. This is how the first chapter of this book starts – here the reader will get the basic information about the types of ships and terminology used.
Then, the author proceeds to the explanation of the stresses normally encountered in the different ship structures as well as the materials used for ship construction and welding aspects. Each part of the ship’s hull has been addressed in detail, from the bottom and up to the main deck and superstructure. There is a separate chapter in this volume solely devoted to the freeboard and tonnage, including freeboard assignment, the major provisions of the Tonnage convention and all relevant rules and regulations that shall be taken into consideration when developing the design of any ship.
The author has also dealt with the shipboard lifesaving appliances and arrangements, structural fire protection, ship classification, hull vibration, ship dynamics, insulation of the ships, prevention of corrosion to the hull including cathodic protection, painting, anti-fouling, drydocking activities and many other areas.