General

(1) The requirements of this Part are additional to the requirements of Sub-parts E and F dealing with Machinery Installations and Electrical Installations, respectively. (2) Means shall be provided whereby normal operations of propulsion machinery can be sustained or restored even though one of the essential auxiliaries becomes inoperative. Special consideration shall be given to the malfunctioning of– (a) an electrical power generator which serves as (b) the sources of lubricating oil pressure; (c) the sources of water pressure; (d) an air compressor and receiver for starting or control purposes; and (e) the hydraulic, pneumatic or electrical means for controlling main propulsion machinery including controllable pitch propellers. Merchant Ships (Registration) 156 (3) However, the Administration, having regard to overall safety considerations, may accept a partial reduction in propulsion capability during normal operations. (4) Special consideration shall be given to the design, construction and installation of propulsion machinery systems so that any mode of their vibrations shall not cause undue stresses in this machinery in the normal operation ranges.