freeboard

Above the waterline

Freeboard is the distance between the waterline and the deck of a boat or ship—the portion of hull that remains above water.

Adequate freeboard prevents waves from washing over the deck and swamping the vessel: The canoe rode low with almost no freeboard.

The term extends to dams and levees, measuring height above water level.

measurement

clearance

Permitted passage or approval

distance · gap · draft · waterline · plimsoll · displacement · buffer · allowance · space · interval

hull

gunwale

Ship's side top edge

  • deckShip's flat surface
  • bulwarkDefensive fortification or safeguard
  • bowRespectful forward inclination

stern · hull · keel · bilge · scuppers · planking · timbers · watertight · integrity · scantling

stability

buoyancy

Fluid's upward resistance

  • ballastShip stability material
  • trimRemove unwanted edges
  • listSequence of recorded items

displacement · seaworthiness · capsize · heel · righting · reserve · flotation · loading · cargo · tonnage

safety

swamping

Overwhelming with excess

  • floodingOverwhelming water accumulation
  • wavesTraveling energy disturbances
  • sprayDispersed liquid droplets

seas · weather · storm · swell · chop · overwash · green water · conditions · rough · heavy

Categories
Opposites
hull position relative to waterline

freeboarddraft

Preliminary version of text

draught · submergence · immersion · displacement · underbody

vessel stability/safety margin

freeboardsubmersion

Being entirely underwater

overloading · swamping · flooding · waterlogging · capsizing

Family

board, freedom, freed, freely, freeman, freemen, unfreedom

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