RULE 261.

(a) The amidship derrick guys and preventers shall be kept as far away from the heel of the derrick as possible, but not past the line of the cargo runner. In the case of the yard arm derrick, the foregoing shall not apply. The yard arm derrick guy and preventer shall be made fast at a convenient position, but not to interfere with other set of gear, they shall be made fast so as to take the strain on the preventer. Preventers shall be made fast around the head of the derrick independent of all other fastenings except when the head is designed with cap or spider band of strength sufficient to accommodate guy and preventer. When operating gear in the certified U.P. arrangement, the gear must be rigged in accordance with the applicable general arrangement drawings for the vessel.

(b) Preventers shall be of wire and/or chain and when in more than one piece shall be joined by eye splice and shackle or by some other equally suitable arrangement. Tails, when used, shall be of wire or chain, and shall be in good condition. (See also Rule 1).

(c) When deck loads extend above the bulwarks and sufficient clearance to enable employees to go overside to secure or release a derrick guy, preventer or chain lashing is not provided between outboard edge of deck load and bulwarks, a suitable life line shall be provided.