What must the EOW obtain permission from the OOD to secure?

The Engine Order Watch (EOW) must obtain permission from the Officer of the Deck (OOD) to secure the Main Diesel Engines (MDEs) due to the critical function these engines serve in maintaining the vessel's propulsion and electrical generation. Securing the MDEs can significantly affect the operational status of the cutter, potentially leaving it without propulsion or power, which could pose safety risks. This decision requires coordination and ensures that the OOD is aware of the current status and operational readiness of the vessel.

In contrast, the other systems, while important, do not typically require the same level of oversight or coordination as the MDEs. The steering system, reduction gear, and ship service diesel generators (SSDGs) are essential for maneuvering and auxiliary power but managing them can often be performed within the engine room staff's discretion without needing explicit permission from the OOD. Securing MDEs entails more significant operational changes, thereby necessitating a higher level of situational awareness and communication between the EOW and OOD.