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Describe the craft and your position aboard without ambiguity. Dimensions, directions and loading terms help you read specifications and explain a job to a boatyard.
Motor cruising equipment →MarineBrands editorial definitions · Reviewed 5 October 2026 · Examples explain context, not operating procedures.
12 of 12 terms
Also find under: width
The width of a vessel, usually its maximum width when given as a principal dimension.
Confirm whether a published beam includes projecting fittings when planning a berth or transport.
Also find under: front
The forward end of a vessel.
Describe a mounting position relative to the bow rather than the direction you happen to be facing.
Also find under: boat displacement
The mass of water displaced by a floating vessel, equal to the vessel’s mass in that condition.
Compare light and loaded displacement on the same basis when reviewing boat specifications.
Also find under: draught
The vertical distance from the waterline to the lowest underwater part of the vessel.
Loading and appendages affect draft; a brochure figure needs its stated condition.
The vertical distance between the waterline and a specified deck edge or upper side reference.
Ask where a quoted freeboard was measured; it is not the same dimension as draft.
Also find under: LOA
The vessel’s overall length under the measurement convention being used.
Ask whether bowsprits, platforms or other projections are included before booking space.
A running condition in which hydrodynamic lift supports a substantial part of a hull’s weight.
A planing description does not establish comfortable performance in a particular sea state.
Also find under: port side
The vessel’s left side when facing towards its bow.
The port side stays the same when a crew member turns around.
Also find under: starboard side
The vessel’s right side when facing towards its bow.
Specify starboard or port when sending installation photographs to a supplier.
Also find under: aft end
The after end of a vessel.
A stern fitting may be on a transom or another part of the aft structure.
The structure forming the stern face of many boats.
An outboard or transducer installation requires the actual transom arrangement, not just the boat length.
The line where the hull meets the water surface in a particular loading condition.
Added load can change the actual waterline from the design or painted mark.
Original concise explanations for equipment research. Use these specialist resources for the wider technical context and the relevant current documentation for a particular product or activity.
Motor cruising equipment →