Merchant Shipping Act, 1951 (Act No. 57 of 1951)

Schedules

Second Schedule

Protocol of 1978 Relating to the International Convention for the Safety of Life at Sea, 1974

Annex

Chapter II–1 : Construction — Subdivision and Stability, Machinery and Electrical Installations

Part C — Machinery and Electrical Installations

Regulation 30 : Electric and electrohydraulic steering gear
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(a)        Passenger ships and cargo ships.

Indicators for running indication of the motors of electric and electrohydraulic steering gear shall be installed in a suitable location to the satisfaction of the Administration.

 

(b)All passenger ships (irrespective of tonnage) and cargo ships of 5 000 tons gross tonnage and upwards.
(i)Electric and electrohydraulic steering gear shall be served by two circuits fed from the main switchboard. One of the circuits may pass through the emergency switchboard, if provided. Each circuit shall have adequate capacity for supplying all the motors which are normally connected to it and which operate simultaneously. If transfer arrangements are provided in the steering gear room to permit either circuit to supply any motor or combination of motors, the capacity of each circuit shall be adequate for the most severe load conditions. The circuits shall be separated throughout their length as widely as is practicable.
(ii)Short circuit protection only shall be provided for these circuits and motors.

 

(c)Cargo ships of less than 5 000 tons gross tonnage.
(i)Cargo ships in which electrical power is the sole source of power for both main and auxiliary steering gear shall comply with subparagraphs (i) and (ii) of paragraph (b) of this Regulation, except that if the auxiliary steering gear is powered by a motor primarily intended for other services, paragraph (b) (II) may be waived, provided that the Administration is satisfied with the protection arrangements.
(ii)Short circuit protection only shall be provided for motors and power circuits of electrically or electrohydraulically operated main steering gear.