46 CFR 160.033-3 - Construction of mechanical disengaging apparatus.

§ 160.033-3 Construction of mechanical disengaging apparatus.
(a) Mechanical disengaging apparatus shall be of such strength that the lifeboat in which installed may be safely lowered with its full complement of persons and equipment. A minimum factor of safety of six on the ultimate strength of the materials used shall be maintained at all times based on the approved working load per hook.
(b) Mechanical disengaging apparatus shall be designed to release both ends of the lifeboat simultaneously under tension, which shall be effected by partially rotating a shaft which shall be continuous and extend from point of contact with the hooks. The control effecting the rotation of the shaft shall be painted bright red and shall have thereon in raised letters the words “DANGER—LEVER DROPS BOAT”. The control shall be readily accessible, secured to a permanent part of the lifeboat structure, and so installed as not to interfere with the inspection of any removable parts of the lifeboat or its equipment.
(c) If closed type hooks are used, arrangements shall be made to effect the release of the falls in the event that the gear is inoperable.
(d) Positive means of lubrication shall be provided for all bearings.
(e) Welding, when employed, shall be performed by welders certified by the U. S. Coast Guard, American Bureau of Shipping, or U. S. Navy Department, and the electrodes used shall be of an approved type.
(f) The manufacturer shall furnish mill or foundry affidavits relative to the physical and chemical properties of the materials used.
[CGFR 49-18, 14 FR 5113, Aug. 17, 1949, as amended by CGFR 52-10, 17 FR 2365, Mar. 19, 1952; CGFR 57-27, 22 FR 4021, June 7, 1957]
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