Which of the following is a step involved in launching or recovering RHIBs?

The correct answer is that releasing the hook and casting off aft is indeed a critical step in both launching and recovering a RHIB (Rigid Hull Inflatable Boat). This action involves detaching the RHIB from the mother ship, allowing it to be safely deployed into the water. Ensuring the vessel is properly secured and the line is clear is crucial for a successful launch.

During recovery, releasing the hook is necessary to bring the RHIB back on board. This action is part of a systematic approach to safely manage the boat, ensuring it is retrieved without causing damage to either the RHIB or the launching platform. Proper execution of this step facilitates an efficient and safe operation, which is vital in maintaining the safety and integrity of both the personnel and equipment involved.

The other options do not accurately represent necessary steps in the process. For example, securing only the bow wouldn't account for the other aspects of stability and safety required when deploying or recovering a boat. Immediate retrieval of the engine isn't a standard procedure during these operations as the engine is not retrieved separately. Lowering the sail is not applicable to RHIBs, which do not have sails as they are motorized boats. Therefore, the focus on releasing the hook and casting off aft encapsulates the essential