46 C.F.R. § 185.724 Quarterly inspections.
Title 46 - Shipping
(a) Each winch control apparatus of a launching appliance on a vessel, including motor controllers, emergency switches, master switches, and limit switches, must be examined once in each 3 months. (b) The examination required by paragraph (a) of this section must include the removal of drain plugs and the opening of drain valves to make sure that enclosures are free of water.
Title 46: Shipping
PART 185—OPERATIONS
Subpart G—Operational Readiness, Maintenance, and Inspection of Lifesaving Equipment
§ 185.724 Quarterly inspections.

