Maritime glossary
Freeboard
The distance from the waterline to the main deck, a direct measure of a loaded vessel’s reserve buoyancy.
Definition
Freeboard is the height of the ship’s side that stays above water, measured amidships from the waterline to the freeboard deck. It is the visible expression of how heavily a vessel is loaded: the deeper the cargo, the smaller the freeboard. The load line, or Plimsoll mark, is the regulatory minimum freeboard, set so the ship keeps enough reserve buoyancy and stability for the season and the water density.
How Vessel Hunter uses Freeboard
Freeboard and the load line together tell you whether a vessel is loaded to its marks. Vessel Hunter’s specs give compliance and survey teams the reference.
Related terms
- Load LinePlimsoll Mark
The marking on a ship’s hull that shows the maximum legal loading depth for a given season and water density.
- Draught
The vertical distance from the waterline to the deepest point of the hull, the constraint that decides which ports a loaded vessel can enter.
- Displacement
The actual weight of a vessel, equal to the weight of water it displaces, measured in tonnes.
The bigger picture
Freeboard is one piece of the commercial maritime picture Vessel Hunter pulls together for shipyards, suppliers, service providers, and port agents. Every vessel record bundles AIS, ownership, inspections, dry-dock history, casualty record, classification status, and a verified contact for the operator decision-maker behind the ship, so the team that reaches out first wins the work.
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