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T&R Panel M-16 - Propulsion Shafting Systems, felt that a commercial guideline was needed for personnel involved in the design and selection of commercial marine propulsion shaft systems. Therefore, this Bulletin is on shafting systems for commercial vessels over 20 meters in length. This Bulletin provides a series of commercial shafting systems applicable to most commercial ships being designed today. Included in this Bulletin is an appraisal of commonly used shaft line components.

This Bulletin provides the propulsion engineer with the necessary technical background and knowledge to develop a commercial shafting design that meets all design considerations. Guidance is provided so that a design can be transformed into a comprehensive shaft arrangement drawing that allows a shipyard to incorporate the shafting system into the constraints of the build strategy and shipbuilding practice. While specific details of prime movers, gearing, and propulsors are not covered, certain aspects of these components, as they apply to shafting design and details, are presented. Finally, the Bulletin provides guidance for maintenance of the shafting system after the vessel enters service.

 

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The variety and number of liquid cargoes being transported in bulk by sea are growing steadily as research and industrialization advance in all countries. Most of these products at one time or another are offered for loading aboard general cargo vessels in deep tanks or portable tanks. Although such cargoes generally are considered high-paying, they often involve complex handling problems which if not properly solved can result in substantial losses and claims. In an attempt to advance general knowledge and efficiency in this growing field, the Ship Technical Operations Committee created Panel 0-26.
 
The panel, composed of representatives of all phases of the industry, was given the task of compiling under one cover a review of current practice. The panel has solicited information and experience data from operators and designers of a large group of representative ships. This bulletin summarizes the experience in tank construction, heating, cleaning or preparation, and coating. It also presents the panel's recommendations on methods of surveying and inspecting deep tanks, and on methods of testing coatings and preparing steel tank surfaces.
 
The panel intends to continue the development of the subjects covered herein with the expectation of ultimately arriving at empirical standards of design and operational methods. Further, the panel will endeavor to develop methods of relative cost analysis for the benefit of the industry.
 
As the use of coating products has only now become universal, the panel will endeavor to compile and correlate more definitive recommendations and standards as experience is gained with the ultimate goal of specific recommendations. The complete development of the environmental test will also be undertaken.
 
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T&R Bulletin 4-6 has been superseded by T&R Bulletin 4-10. 

Panel 0-23 of the Ship Technical Operations Committee has compiled performance data and descriptions of the potentials and limitations of the basic types of marine paints now in use for the protection of ships' hulls and weather decks. The panel recognizes that considerable variation exists in the performance of paints and coatings based on the same type of vehicle due to differences in processing and formulation. It further recognizes that any advantages obtained by special processing or formulation is a result of research and development by the individual manufacturer, and is a proprietary asset of that company. In the near future, the panel will endeavor to prepare similar tables outlining the properties of some of the newer coatings now undergoing evaluation.

 

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Society of Naval Architects and Marine Engineers, been investigating the use of various insulation materials, and their proper application, for the purpose of obtaining the most satisfactory comfort conditions on shipboard in the most economical manner. In compiling the data on heat transmission through the various types of constructions as given in this Report, the corresponding "U" values have been based on the latest available information and, technical data supplied by the manufacturers of the insulation and sheathing products now available to the industry. It is recognized that the basic "k" values are subject to change as a result of improved manufacturing techniques and more extensive transmission tests. It is requested that proposed revisions to the Text and Tables be referred to SNAME for preparation of future revised editions of this Report.

 

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Abrasive blasting standards established by the Steel Structures Painting Council (SSPC) and the National Association of Corrosion Engineers (NACE) with supplementary photographic illustrations developed by The Corrosion Committee of The Royal Swedish Academy of Engineering Sciences have enjoyed widespread use during the past decade for both industrial and marine applications.

 

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Panel O-28 (Ships' Material) of The Society of Naval Architects and Marine Engineers (SNAME) Technical and Research Program, with the guidance of the Ship Technical Operations Committee, has been investigating the use of various deck coverings and deck preparation for the purpose of determining the most suitable materials for particular shipboard applications. The result of these investigations are contained in this Marine Deck Covering Guide.

 

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This guide defines the basic requirements for the design, construction, testing, and operation of various types of cranes for shipboard use, including cranes for handling general cargo, unitized cargo, and other cargoes. The purpose is to provide guidance for the buyer in specifying particulars to suppliers and to provide a more consistent and uniform specification which is of assistance to the manufacturer in designing and pricing the cranes.
 
Because there are many variables with respect to ship configuration, application, and economic con­siderations, certain data listed in Article 8.4 has been treated as specific ordering data and is contained at the end of this guide; it may be used by the buyer to indicate specific data and characteristics of the crane or cranes to be procured.  The guide itemizes many of the normally accepted requirements; however, should the particular application require modification of these requirements, these modifications. should be itemized by the purchaser in Article 8.4.
 
Certain requirements of the regulatory agencies must be considered and generally should take precedence over the re­lated provisions of this guide unless these agencies have agreed to accept the requirements of this guide as an alternate to their published requirements.
 
This guide is not intended to inhibit the ingenuity of the designer or manufacturer in providing equipment that is safe and efficient in performing its intended functions in the marine environment. If departures from these recommendations are required, such departures and exceptions shall consider the problems peculiar to marine use.
 
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T&R Bulletin 4-13 (1970) supersedes existing the T&R Bulletin 4-11 (1969).
 
Panel 0-34 (Computers) of The Society of Naval Architects and Marine Engineers Technical and Research (T&R) Program, under the guidance of the Ship Technical Operations Committee, in January of 1969 canvassed organizations in the maritime industry, known to have developed marine-oriented computer programs, for the information contained in this Bulletin.
The program information gathered was reviewed by Panel 0-34, and on the basis of keywords assigned by the Panel, the marine computer program listing was compiled and a Keyword Index prepared.
 
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In November, 1964 Panel 0-31 (Cargo Handling), under the guidance of the Ship Technical Operations Committee of The Society of Naval Architects and Marine Engineers (SNAME) Technical and Research (T&R) Program, undertook the development of a Guide for determining the amount of auxiliary ventilation required for ship's cargo holds in which fork lift trucks powered by internal combustion engines are operating. The coordination of the efforts of the Panel and of the organizations and individuals listed in the Acknowledgments was accomplished by Mr. William Hunley who, as a member of the Panel, prepared the text of this Guide. The results of these efforts are presented in this publication, which is intended to provide ship operators and stevedoring companies with a convenient guide and reference.
 
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This Guide contains suggestions and recommendations concerning procedures and precautions in applying various coatings to steel marine vessels. It includes tables of coatings currently used on shipbottom, boottop, freeboard, weather deck, and superstructure of these craft and also tables on compatibility of various primers with topcoats and new topcoats with existing topcoats. Glossary of terms used in the marine coatings industry is included.
 
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