Port State Control Examiner Practice Test

This item tests understanding of what a Marine Sanitation Device Type III is designed to do. A Type III device is a holding tank that stores sewage (blackwater) on board, preventing any overboard discharge of sewage while at sea. It is pumped out at port facilities or shore-side pump-out stations when the ship is in port. It is not intended to contain incinerated residue, ballast water, or greywater, which are managed by other systems or processes. Therefore, the sewage holding tank is the correct choice.