ABS Class Notations Table - Towmasters: the Master of Towing ...

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ÅABS Notations and Symbols – 3 November 2003 (Updated on 25 January 2007) Rivers and Intracoastal Services, (Great Lakes) NOTATION DM PM DESCRIPTION Dual Mode (DM) – This notation will be assigned to tugs, which are in full compliance with the requirements of the Part 5, Chapter 8 of the ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 feet) in Length, and signifies that the vessels have the dual mode (DM) capabilities, pushing barges in ITB mode and towing barges by hawser in a separate mode. The tug will be classed and distinguished in the Record by the notation À A1 Towing Vessel Great Lakes Service, DM. Similarly, the barge will be classed and distinguished in the Record by appropriate notation followed by Great Lakes Service, DM. The tug and the barge are to be classed as two separate vessels but will be cross-referenced in the Record. Pushing Mode (PM) – This notation will be assigned to tugs, which do not meet the requirements for intact stability during tow as specified in the Part 5, Chapter 8, Section 2 of the ABS Rules for Building and Classing Steel Vessels Under 90 Meters (295 feet) in Length, but do meet the requirements of the rest of the above Rules, and are intended to operate in a pushing mode (PM) only and remain fixed to the barges throughout the voyage under all weather conditions. The tug will be classed and distinguished in the Record by the notation À A1 Towing Vessel Great Lakes Service, PM. Similarly, the barge will be classed and distinguished in the Record by appropriate notation followed by Great Lakes Service, PM. The tug and the barge are to be classed as two separate vessels but will be cross-referenced in the Record. REFERENCES DM 1/1.1.1 and 1/1.1.3 of the Guide for Building and Classing ITB Combinations Intended to Operate on the Great Lakes PM 1/1.1.2 and 1/1.1.3 of the Guide for Building and Classing ITB Combinations Intended to Operate on the Great Lakes REMARKS ABS Notation Example – À A1 Oil Tank Barge, Great Lakes Service, DM… À A1 Tank Barge, Great Lakes Service, PM…
ÅABS Notations and Symbols – 3 November 2003 (Updated on 25 January 2007) Underwater Vehicles and Systems NOTATION Diving Bell Submersible Personnel Capsule Habitat, etc. DESCRIPTION These notations are to be assigned for manned or occasionally manned underwater vehicles, underwater facilities hyperbaric facilities and diving simulators which have been built to the satisfaction of ABS surveyors to the full requirements of ABS Rules for Underwater Vehicles, Systems and Hyperbaric Facilities, or their equivalent where approved by the ABS Classification Committee for the service. REFERENCES 7/5.1 of the Rules for Building and Classing Underwater Vehicles, Systems and Hyperbaric Facilities REMARKS Class Notations Example – À A1 Diving Bell… À A1 Submersible… À A1 Personnel Capsule… À A1 Habitat…
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ABS Class Notations Table - Towmasters: the Master of Towing ...

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