Here is the second part of the two-volume set by the world-recognized expert Thomas Colvin, where the readers will find everything they need to know about building the steel boat, particularly the stage starting when the bare hull is already available, and up to the happy moment of launching. Now that the hull is constructed, it is high time to concentrate on the other aspects of boatbuilding, starting with the insulation and heating, and in some cases refrigeration.
Having completed this chapter, the reader will move on to the ones addressing joinery and rigging. Needless to say, that the lifesaving equipment is of utmost importance, that is why there is a separate chapter devoted to the liferafts. The ballasting and deballasting operations have been covered, as well, to ensure safety.
The reader will find valuable instructions related to the finishing and painting the boat hull. Finally, once everything else have been prepared and checked, it is the time for launching, and this process has also been covered in detail, to make sure nothing has been missed. The author even goes as far as covering the business and commercial aspects of the boatbuilding.
The present work by Thomas Colvin is deservedly treated as one of the best textbooks on the steel boatbuilding. It gained world popularity among the boat and yacht lovers. The publication in fact consists of two volumes, offering interested readers professional insight and shared real-life experience of the author. According to the numerous reviews provided by the readers during the past forty years, this is a truly must-have one.
The first of the volumes is dealing with the boatbuilding stage from the plans and drawings, and up to the moment where the bare metal hull of the future boat is ready. The author starts with brief introduction and instructions on how the book shall be used in order to get the maximum of it, and then gives general information about the plans normally used in steel vessel constructions. After that you will find valuable information related to the materials used in shipbuilding, and necessary equipment.
The basic scantlings have been covered in detail as they form the foundation of the proper design and subsequent construction of any vessel. The rest of the chapters are covering the ship strength, preparation of the templates, associated costs, plating, framing, welding and so many other aspects of the steel boatbuilding.
AIS, standing for the Automatic Identification System, in its latest enhanced version allows identification and tracking from other ships and also from shore stations. A broadcast AIS improves safety and solves the limitations of radar because of its ability to see a ship behind a bend in a channel or behind an island and to identify it.
It also helps the commander to predict the exact position of a meeting with other ships in a river or archipelago and to avoid meeting at a narrow river bend for instance. Autonomous and continuous AIS means that two or more vessels coming within reach of VHF radio range automatically transmit all the AIS data to each other. The equipment is the same for both ships and shore stations and the system can handle several thousand AIS messages per minute.
The AIS transponder consists of a GPS receiver giving position, speed and time information to a computer. The computer then uses a VHF radio to exchange the information data with other AIS stations. This technique is called self-organized time division multiple access and needs only one radio channel for sending and receiving.
A unique method is used so that the messages won't become garbled. An AIS transmitter uses a time slot of only a few hundredths of a second to send its own data. At the same time, it reserves another time slot for the next message.
All AIS equipped ships and shore stations repeat the same procedure. AIS technology which was partly developed and tested in Sweden is now an approved international standard. The Swedish coast will be covered by more than thirty shore stations.
The information provided by the AIS will include call sign and name, length and beam, type of ship, location of position fixing antenna on the ship, ship's position with accuracy indication, time and universal time coordinated UTC, course over ground, speed over ground, heading, navigational status for instance at anchor, ship's draft and hazardous cargo if required by the authority concerned, and destination and estimated time of arrival.
The main idea of David Marley, the author of the present publication, was to assist all parties of the contemporary international maritime shipping industry, with getting more practically useful information on the piracy issues, threats and actual situation. The information and all materials contained in this book was developed on the basis of the historical factors considered important enough.
Of course, the book opens with the brief historical background, shedding some light on the real roots of the maritime piracy. After that the author starts dealing with the real problems of today's piracy, proposing some solutions to these problems and analyzing them. Apart from the general information, the author covered some of the issues specific to the United States.
The publication will be of great practical interest not only to all mariners but actually to anyone involved in the industry and caring about the human safety and security onboard ships. Needless to say that this is critically important today, maybe more than ever in the history.
It is a known fact that the UNCLOS 1982 convention established a clear regulatory frame for the Law of the Sea basing on two major concepts, first of them being the zonal analysis. The subject concept considers division of the seas into several juridical zones, each of them covered by the set of rules. In turn, the second concept implies the so-called topical analysis, within which the rules are set for the main activities taking places on the seas.
However, the entire framework is a sort of incomplete and has some areas remaining for improvement. That is why it continually develops and improves to make sure that all newly introduced challenges are met at all times. The author of the present monograph explored all of the above issues in order to offer readers a good professional insight into the legal developments.
The analysis starts from the essential principles that governs the jurisdiction internationally. The volume will definitely be very useful to all people interested in the directions to which the today’s Law is heading. The readers will have better understanding of the basic compromises of the UNCLOS, which is important before you dive deeper into any analysis and/or investigation.
The book primarily targets practicing marine engineers and naval architects, mainly within the marine sector, but also extends to academic and research institutions. Specifically, during the writing of this book, the author considered the various inquiries regarding propeller technology that are often raised by designers, ship operators, and surveyors, and I have endeavored to provide responses to these inquiries.
Moreover, the book is grounded in the currently recognized body of knowledge beneficial for practical design and analysis; contemporary research topics are discussed to a lesser extent. As with previous editions, several significant advancements in propeller and propulsion technology have occurred since their publication. This edition is no exception. As a result, the text has been generally revised to incorporate the developments that have transpired over the six years since the release of the Third Edition.
In addition to these ongoing advancements, the chapter concerning ship resistance and propulsion has been notably expanded to include high-speed craft, particularly in relation to hydrodynamically supported vessels, aerostatically supported vehicle propulsion, and aerodynamically driven propulsion. Likewise, the discourse on high-speed propellers has been significantly broadened to reflect the enhancements in Chapter 12.
A new chapter addressing propeller-ice interaction and operations in arctic environments has been added. This new chapter encompasses information on ice types and their mechanical properties, ship resistance and propulsion in ice, a discussion on models of propeller action, model testing, ice interaction-induced cavitation, as well as an examination of the performance of ships operating in icy conditions. Regarding the layout and structure of the book, some modifications have been made, and a consistent order has been established within the referencing system.
The main idea of David Marley, the author of the present publication, was to assist all parties of the contemporary international maritime shipping industry, with getting more practically useful information on the piracy issues, threats and actual situation. The information and all materials contained in this book was developed on the basis of the historical factors considered important enough.
Of course, the book opens with the brief historical background, shedding some light on the real roots of the maritime piracy. After that the author starts dealing with the real problems of today's piracy, proposing some solutions to these problems and analyzing them. Apart from the general information, the author covered some of the issues specific to the United States.
The publication will be of great practical interest not only to all mariners but actually to anyone involved in the industry and caring about the human safety and security onboard ships. Needless to say that this is critically important today, maybe more than ever in the history.
The ship's marine engines are considered to be the biggest engines on earth with massive power to propel a heavy loaded ship. There are different parts of the marine engine which helps the engine to rotate the crankshaft and propel the ship from one port to another. Each component plays an important role in powering and running a marine diesel engine. But the engine cannot run unless all components are in place and are in working condition.
The main engine of a seagoing cargo ships are usually two-stroke internal combustion engines. For a marine engineer or a professional working on ships, it is vital to know different engine parts and their function to operate and troubleshoot when needed. You must have seen the engine inside the machinery room of the ship, covered and assembled with different other auxiliaries.
Let's take it out from its installation and only concentrate on the main engine to understand its different parts. Looking at the exterior of the engine, it comprises of the following parts.
Bed Plate is the foundation block for two-stroke engine. It is built to withstand the constant force from the engine but is also flexible enough to handle constant fluctuations.
A-frame is a fabricated steel structural element of a slow-speed two-stroke diesel engine. It stands on the bed plate above the main bearings. The A-frame carries the cross-head guides and supports the engine entablature, also known as the cylinder block.
An entablature is a part of the ship's main engine which houses the cylinder liner along with the scavenger air space and cooling water spaces.