Definition(s)
Operating mechanism
Operating mechanism is the means by which the operator activates the opening, or release, of the movable hook component. It includes the operating handle, linkages/cables and hydrostatic interlock, if fitted.
Source: IMO MSC.1/Circ.1392, Guidelines for evaluation and replacement of lifeboat release and retrieval systems, 27 May 2011, International Maritime Organization, Regulatory guidance