Outboard means toward the outer sides of a vessel, away from the centerline — the opposite direction to inboard.
Common Uses
- Equipment positioning — the outboard side of a piece of equipment or fitting is the side closer to the ship’s hull/edge
- Cargo stowage — containers or cargo positioned outboard sit closer to the ship’s sides rather than near the centerline
- Movement direction — “swing the gangway outboard” means moving it toward the ship’s side, away from the interior
Outboard vs Inboard
- Outboard — toward the sides, away from the centerline
- Inboard — toward the centerline, away from the sides
Together these give a consistent, unambiguous way to describe lateral position without needing to specify port or starboard, when what matters is simply “toward the edge” versus “toward the middle.”
Outboard Engines: A Different, Unrelated Meaning
Note that “outboard motor/engine” (a portable engine mounted on the outside of a small boat’s transom) is a completely different, common usage of “outboard” from small-craft terminology — distinct from the directional meaning used aboard merchant ships.
Exam Relevance
Outboard and inboard as directional/positional terms are covered within Ship Knowledge topics in deck officer competency exams, particularly in the context of cargo stowage and equipment description.