Division .5 Where the main steering gear comprises two or more identical power units, an auxiliary steering gear need not be fitted, provided that:F1
United Kingdom
- .1
the main steering gear is capable of operating the rudder as required by paragraph .2.2.2 while any one of the power unit is out of operation;
- .2
the main steering gear is so arranged that after a single failure in its piping system or in one of the power units the defect can be isolated so that the steering capability can be maintained or speedily regained.