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The American Bureau of Shipping (ABS) is an American maritime classification society established in 1862. [1] Its stated mission is to promote the security of life, property, and the natural environment, primarily through the development and verification of standards for the design, construction and operational maintenance of marine and offshore assets.
Many of the symbols listed here are not presently in use. The Naval Vessel Register maintains an online database of U.S. Navy ships. The 1975 ship reclassification of cruisers, frigates, and ocean escorts brought U.S. Navy classifications into line with other nations' classifications, and eliminated the perceived "cruiser gap" with the Soviet Navy.
In official context and legislation, the ice classes are usually spelled with Roman numerals, e.g. IA. [3] Classification societies may sometimes use somewhat different distinguishing marks for Finnish-Swedish ice classes; for example, 1A Super is defined as Ice Class I AA by the American Bureau of Shipping (ABS) and ICE(1A*) by DNV GL. [4]
A ship classification society or ship classification organisation is a non-governmental organization that establishes and maintains technical standards for the construction and operation of ships and offshore structures. Classification societies certify that the construction of a vessel complies with relevant standards and carry out regular ...
The International Association of Classification Societies (IACS) is a technically based non-governmental organization that currently consists of twelve member marine classification societies. More than 90% of the world's cargo-carrying ships’ tonnage is covered by the classification standards set by member societies of IACS.
This is a list of historical ship types, which includes any classification of ship that has ever been used, excluding smaller vessels considered to be boats. The classifications are not all mutually exclusive; a vessel may be both a full-rigged ship by description, and a collier or frigate by function. A two-masted schooner Aircraft Carrier
The IX (unclassified–miscellaneous) hull classification symbol is used for ships of the United States Navy that do not fit into one of the standard categories. [1] [2] Similar lists of 'miscellaneous' ships can found at List of auxiliaries of the United States Navy § Miscellaneous ships (AG, T-AG) and
For ships with civilian crews (owned by and/or operated for Military Sealift Command and the Maritime Administration), the prefix T- is placed at the front of the hull classification. Support ships are designed to operate in the open ocean in a variety of sea states to provide general support to either combatant forces or shore-based ...