- Every ship shall be provided with main steering gear and auxiliary steering gear, which shall be so arranged that the failure of one will not render the other in operative.
- The steering gear components and the rudder stock shall be designed and constructed to withstand with an adequate factor of safety, the maximum working stresses to which they may be subjected. Any bearings for such essential components shall be permanently lubricated or provided with lubrication fitting.
- The design pressure for steering gear components and piping subject to internal hydraulic pressure shall be at least 1.25 times the maximum working pressure anticipated when the steering gear is operating taking into account any pressure which may be existing in the low pressure side of the system. Fatigue criteria, taking into account pulsating pressure due to dynamic loads, shall be taken into account for the design of piping and components if the Chief Surveyor with the Government of India considers it appropriate.
- Relief valves shall be fitted to any part of the hydraulic system which can be isolated and in which pressure can be generated from a power unit or from external forces. The pressure at which relief valves operate shall not exceed the design pressure. The valve shall be of adequate size so as to avoid an undue rise in pressure above the design pressure.
The main steering gear and rudder stock shall-
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