Answer: engineroom

AnswerCrossword Clue
ENGINEROOM

Floating power plant

ENGINEROOM

Oceangoing power plant

ENGINEROOM

Heart of a large vessel

ENGINEROOM
Important area on shipboard.
ENGINEROOM
Area below decks.
ENGINEROOMPart of a ship
ENGINEROOMScotty's domain on "Star Trek"
ENGINEROOMScotty's domain on the U.S.S. Enterprise