society > travel > travel by water > vessel, ship, or boat > vessel with reference to qualities or attributes > [adjective] > having clean or dirty bottom (2)
Clogged, encumbered, or obstructed with foreign matter. Nautical. Of a ship: having the bottom overgrown with seaweed, barnacles, etc. Also of the…
in various specific senses; Of ships: Having the bottom free from barnacles, etc. Of whaling or fishing vessels: With no fish or oil aboard, empty…