| What statement is true concerning the platform interlock devices associated with a winding drum or traction drive cargo elevator onboard ship? |
| A) 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. |
| B) 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. |
| C) Platform interlocks are used to over-ride elevator emergency status in a shipboard emergency when elevators are required to be used. |
| D) Platform interlocks are used to prevent elevator operation in a shipboard emergency when elevators are not to be used. |
