This is one of the latest publications addressing the newly introduced means of electronic ship navigation. Prepared by the recognized experts in marine navigation, the publication will provide the students with the comprehensive, thorough and informative introduction to the global electronic navigation.

The content of this book will present the vision, technical development and main objectives of the technology in order to reach improvement in the safety of international commercial maritime shipping. All of the shipboard equipment in use today have been discussed together with the associated established practices including the ship reporting utilization of the shore-based servicing, VTS, standing for the vessel traffic systems, communications and many other areas.

The idea of the author was to identify the existing information gap and also to show the proper identification of the user’s demands via the gap analysis. He has also explored the architectures of the modern electronic navigation systems together with the popular and effective technical solutions and applicable standard. The users of the subject systems will find the volume useful since it provides the practical insight into the numerous new concepts.

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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 Since the subject lectures were left unpublished for so many years, the decision was made by the author to compile this perfect book and provide all information and knowledge needed by and useful to the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.

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All of us would definitely like to build his or her own boat somewhere at the backyard and start sailing. But how could that be accomplished, is that possible at all? Of course, if you are not too rich, you will have to build your boat yourself. There are many problems with building boats, including but not limited to the materials used for the hull construction, outfitting of the boat, onboard equipment and many other things.

The present volume was released to provide all people interested in boatbuilding and boating with the complete and detailed plans and drawings for the seven boats of cruising type, with the dimensions ranging from twenty-eight to fifty-five feet. You will find absolutely everything you need here in this book, which also features step by step instructions and tips reflecting more than twenty-year practical experience of the author.

It is a real treasure for those willing to build a boat and looking for the most simple and economical option and also those not possessing any professional skills or access to the special materials; they will be good to go with the lumberyard ones. Upon completion of this volume they will be able to build their own simple and inexpensive one.

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The main content of the present volume is prepared on the basis of the documents presented during the Eleventh International Colloquium of the Institute of International Shipping & Trade Law. The book was written by the team of recognized specialists contributing their knowledge and experience with the ultimate intention to give readers a perfect and professional insight into the most important issues in the field of the internationally made contracts for sale and transportation.

There are three parts in this volume with the first one offering readers a detailed and thorough discussion on the most critical issues and unanswered questions related to the international trade and associated contracts. The second part is devoted to the legal aspects normally arising in relation with the security of the cargoes, letters of credit and other papers involved. Finally, the third part provides an up to date analysis of the matters relating to the cargo insurance.

The volume features a truly remarkable and impressively broad coverage of the topics and shall be a vital reading and reference source for both students and industry professionals, who will find the information contained herein, beneficial for their study and work.

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An excellent publication that will be greatly appreciated by the people assigned cargo handling related responsibilities on board seagoing ships. The content of the document presents a perfectly selected collection of the most important topics for the cargo work as well as the ship operations. Written by the professional ship captain, the publication starts with the chapter devoted to the bulk carrier operations where all important aspects have been covered and necessary information provided.

Here the readers will also find the useful ship/shore safety checklist to be used during the cargo operations, procedure for the draught survey, etc. the second chapter addresses the grain loading together with the associated calculations including the cleaning of the cargo holds, the hazard of shifting cargo within them, planning of loading, heeling moments, compensation for the vertical shifting of the center of gravity, and other information critical for the safe transportation of the grain cargo by sea.

The marine carriage of timber is the topic of the third chapter of the document, giving the main provisions of the Code of safe practice for the vessels engaged in transportation of the timber deck cargo. All of the cargo lifting appliances normally used on board ship have been covered in detail.

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Since the original release of this volume some fifty years back, it remained the pure classic of the navigation as well as storm survival at sea. One of the unique features of this book is that it focuses on the lessons learnt during the real life cases. It is a great opportunity for the readers to benefit from learning the experience of the other people, showing what does and what does not work in such conditions.

The approach used by the author is very interesting – he managed to include numerous stories supplemented with the detailed analysis and technical advice to be taken into consideration in the future. This would cover the seaworthiness of the boat and its stability, preparations for the heavy weather sailing, rigging and spars, crew fitness, and many other important aspects. The readers will also find many effective methods for survival on different types of boats.

The book, referred to as the perfect and ultimate survival title, is based on the valuable contributions provided by the most experienced and professional sailors in the world, and it is definitely one of the most authoritative books on the subject. This sixth edition reflects all latest developments and achievements in the field of sailing, featuring newly introduced chapters on sailboat design, storm-sailing etc.

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A perfectly told story of the invaluable contribution made by the lightkeepers to the history of development of the lighthouses, combined with the maintenance of the navigation beacons where the human involvement is needed. Needless to say that the main function of the subject devices was the provision of the human safety.

As the employees working at the lighthouses were initially involved in their technical maintenance, they had to encounter a real wildlife and in some occasions they managed to develop the interest in the subject. Closer to the second part of the nineteenth century, they were to submit the annual reports of movement of the birds and the collected information as used by the specialists in their researches.

In addition to that, they were also used to engage in the weather forecasting activities. They noticed that the behavior and health o the birds could change depending on the weather conditions. Read this book if you are really interested in the maritime history; as everyone knows, the lighthouses have always been an integral part of the maritime life. the lanterns installed in the many of them are still in service, even in the age of satellite service, maintained and continuously monitored.

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Drill String Operating Limits

Even though the drill string is manufactured according to certain tested yield and tensile strengths, it is well known that the metal in the pipe is subjected to greater stresses under dynamic conditions in the well than under the static conditions of the lab. Steel has, however, the capability of absorbing cycles of stress for an infinite number of reversals if the stress is kept under a certain limit. This limit is referred to as the endurance of fatigue limit of the steel. If the stress never exceeds that point, any number of cycles will not cause the pipe to fail. It is difficult to measure precisely the fatigue limit of drill pipe because of the various stresses that can be encountered while drilling. It is, however, presumed to be approximately one-third to one-half the minimum tensile strength of the pipe.

Drilling beyond the fatigue or endurance limit will, depending on the number of cycles of stress, eventually cause the pipe to fail. To illustrate this point, consider bending a wire coat hanger back and forth with your hands. If you bend it only slightly, you can bendDrill String Operating Limits 2 it forever without breaking the wire. Repeatedly bending it back and forth to a much greater degree will cause this wire to deform and eventually to break, however.

The fatigue in any metal is progressive. Alternating stresses create heat in the section of the metal that is moving back and forth and reduce the strength of the metal. Submicroscopic cracks form that eventually unite until a crack becomes visible. The crack is normally perpendicular to the stress. Thus, drill pipe fatigue failures are circumferential or transverse – that I, they go around the pipe.

Rotating the drill string in a straight hole normally keeps the pipe well under the fatigue limit. But drill pipe is subjected to cyclical stresses of tension, compression, and torsion, particularly in doglegs and deviated holes. In fact, the major factor is fatigue-related failures in a hole that changes direction. Bending the pipe and rotating it at the same time in a curved hole submits the pipe to alternate cycles of bending or compression and tension. With each rotation, the side of the pipe that was under tension is put under compression and the side that was under compression is put under tension. Obviously, the greater the curve in the hole, the greater the levels of stress on the drill string.

Drill String Operating Limits 3The maximum stress on the drill pipe occurs at the upset runout, that is, where the upset ends and the nominal wall of the pipe meet. The tool joint is strong so the most bending occurs in the relatively thin pipe wall.

The amount of fatigue damage to the pipe depends on several factors including, but not limited to the tensile load in the pipe at the dogleg, the severity of the dogleg, the number of cycles in each dogleg, the dimensions and properties of the pipe, and the corrodibility of the environment. A very corrosive drilling fluid will drastically shorten pipe life. The tensile load refers to the amount of tension, or pull on the pipe.

If drill pipe is damaged while rotating through a dogleg, the damage is permanent. Repetitive stresses accumulate and will eventually cause failure. Drill pipe may be damaged on one hole but not fail immediately. The failure can occur later and far from the position in the drill string when the trouble started, or the drill pipe may fail in subsequent wells.

In addition to the pipe’s failing as a result of metal fatigue, factors such as imperfections in the steel and bend pipe can increase the likelihood of failure.

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