Question 910 Deck General

The correct answer is D) Turn on the red cargo light. The reason this is the correct answer is that turning on the red cargo light is not a necessary step prior to loading or discharging cargo on a Ro-Ro (roll-on/roll-off) vessel. The other three options - raising/opening the stern door, turning on ventilation for cargo holds, and lowering the stern ramp - are all necessary safety precautions that must be taken before cargo operations can commence on a Ro-Ro vessel. The other answer choices are incorrect because they all represent important steps in the cargo loading/unloading process that help ensure the safety of the vessel and crew. The red cargo light is not a required component of this process.