问题

With reference to rules governing stee

With reference to rules governing steering gear, which one of the following rules is incorrect? （）

AIt is required that all ships are provided with two independent steering gear systems that is one main and one auxiliary
BThe auxiliary gear could be power operated in passenger ships
CThe auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speed
DAll moving parts of the steering gear must be guarded against any possible damage

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