Which system must be independently sufficient for navigable speed?

The system that must be independently sufficient for navigable speed is auxiliary steering. The role of auxiliary steering systems is to provide redundancy, ensuring that a vessel can maneuver effectively even if primary steering capabilities are compromised. These systems are designed to function independently and are crucial in maintaining vessel control, particularly during emergencies or when the main steering fails.

Auxiliary steering systems are particularly essential for swift and effective responses in adverse conditions or emergencies. While the main steering system is usually the primary means of steering the vessel, the auxiliary system acts as a backup to ensure that navigational speed and safety can be maintained. This independent capability is integral to marine operations and is a key aspect of safety protocols in maritime navigation.