2 Definitions
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1175/Rev.1 – Revised Guidance on Shipboard Towing and Mooring Equipment – (9 December 2020) - Annex - Shipboard Equipment, Fittings and Supporting Hull Structures Associated with Towing and Mooring - 2 Definitions

2 Definitions

 For the purpose of this guidance:

2.1 Normal towing means towing operations necessary for manoeuvring in ports and sheltered waters associated with the normal operations of the ship.

2.2 Other towing means towing by another ship or a tug, such as to assist the ship in case of emergency.

2.3 Shipboard fittings mean bollards and bitts, fairleads, pedestal rollers and chocks used for mooring of the ship and similar components used for normal or other towing of the ship. Any weld, bolt or other fastening connecting the shipboard fitting to the supporting hull structure is part of the shipboard fitting and subject to any industry standard applicable to such fitting.

2.4 Supporting hull structure means that part of the ship structure on/in which the shipboard fitting is placed and which is directly submitted to the forces exerted on the shipboard fitting. The hull structure supporting capstans, winches, etc. used for normal or other towing and mooring operations mentioned above should also be subject to this guidance.

2.5 Industry standard means international or national standards which are recognized in the country where the ship is built, subject to the approval of the Administration.

2.6 Safe working load (SWL) means the safe load limit of shipboard fittings used for mooring operations in harbours or similar sheltered waters.

2.7 Safe towing load (TOW) means the safe load limit of shipboard fittings used for normal and other towing.

2.8 Ship Design Minimum Breaking Load (MBLSD) means the minimum breaking load of new, dry mooring lines for which shipboard fittings and supporting hull structures are designed in order to meet mooring restraint requirements.

Parent topic: Annex - Shipboard Equipment, Fittings and Supporting Hull Structures Associated with Towing and Mooring
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