'Sea room' definitions:

Definition of 'sea room'

(from WordNet)
noun
Space for maneuver at sea

Definition of 'Sea room'

From: GCIDE
  • Sea room \Sea" room`\ (Naut.) Room or space at sea for a vessel to maneuver, drive, or scud, without peril of running ashore or aground. --Totten. [1913 Webster]