What statement is true concerning the platform interlock devices associated with a winding drum or traction drive cargo elevator onboard ship?

Question

Accepted Answer

Platform interlocks are used to prevent door operation if the platform is at other than a deck level and only allow door operation when the platform is proved at a deck level.

Answer

Platform interlocks are used to override elevator emergency status in a shipboard emergency when elevators are required to be used.

Answer

Platform interlocks are used to prevent door operation if the platform is proved at a deck level and only allow door operation when the platform is at a position other than a deck level.

Answer

Platform interlocks are used to prevent elevator operation in a shipboard emergency when elevators are not to be used.