Section 7 Hull Equipment

701. Mooring systems for temporary mooring

1. The mooring systems for temporary mooring specified in Rules for the Classification of Mobile Offshore Drilling Units need not be fitted. In cases where the Society deems such necessary in consideration of the form of unit operations, the mooring systems for temporary mooring specified in Rules for the Classification of Mobile Offshore Drilling Units are required.

2. In the case of single-point mooring systems to moor shuttle tankers, the chafing chain used ends for mooring lines are to be fitted and are to comply with the following:

(1) The chafing chain is to be the offshore chain specified in Pt Classification of Steel Ships, and the chain standard is short lengths 76 mm diameter.

4 of Rules for the

(approximately 8 m ) of

(2) The arrangement of the end connections of chafing chains is to comply with any standards deemed appropriate by the Society.

(3) Documented evidence of satisfactory tests of similar diameter mooring chains in the prior six month period may be used in lieu of breaking tests subject to agreement with the Society.

3. Equipment used in mooring systems to moor at jetty etc. in order to install plant equipment for the mooring support ships and shuttle tankers, except for the equipment Par 2 above, is to be as deemed appropriate by the Society.

or mooring specified in

702. Guardrails, fenders

1. The guardrails or bulwarks specified in Pt 4 of Rules for the Classification of Steel Ships are to be provided on weather decks. In cases where guardrails will become hindrances to the tak- ing-off and landing of helicopters, means to prevent falling such as wire nets, etc. are to be provided.

2. Suitable fenders fore contact with the gunwales of other ships such as support ships, tug boats, shuttle tankers, etc. are to be provided.

3. Freeing arrangements, cargo ports and other similar openings, side scuttles, rectangular windows,

ventilators and gangways are to be in

4 of Rules for the Classification of

accordance with the requirements for tankers specified in Pt Steel Ships.

4. Ladders, steps, etc. are to be provided inside compartments for safety examinations as deemed ap- propriate by the Society.