Answer: orlops

AnswerCrossword Clue
ORLOPSShip decks
ORLOPSShips' lowest decks
ORLOPSWarships' lower decks.
ORLOPSLowest decks of vessels.
ORLOPSShips' decks.
ORLOPSLowest decks
orlopsORLOP, the lowest deck of a ship
orlopsthe lowermost of four or more decks above the space at the bottom of a hull