MOB boat

A MOB, short for man overboard boat, is a small, fast rescue boat which large vessels, especially passenger ferries and cruise ships, use for man overboard situations.

MOBs use diesel or gasoline-powered engines and are constructed of highly buoyant materials making them nearly unsinkable.

Each boat seats five people with room for a sixth lying down on the floor.

[2] According to International Maritime Organization regulations, passenger ships that are less than 500 gross tonnage (GT) require one Rescue boat and those that are larger need to carry at least one rescue boat on each side of the ship.

Roll-on/roll-off passenger ships require one Fast Rescue Craft (FRC) to be at least 6 metres (20 ft) in length and capable of 20 knots (37 km/h; 23 mph).