Definition of inboard in English:


adjective & adverb

  • 1Within a ship, aircraft, or vehicle.

    [as adverb] ‘the spray was coming inboard now’
    [as adjective] ‘the uncovered inboard engine’
    1. 1.1Toward the center of a ship, aircraft, or vehicle.
      [as adverb] ‘move the clew inboard along the boom’
      [as adjective] ‘the inboard ailerons on the wings were dead’


  • 1A boat's engine housed inside its hull.

    • ‘Meanwhile, the state of California, through its powerful Air Resources Board, is moving toward requiring catalytic converters on marine sterndrives and inboards, ahead of the EPA.’
    • ‘In the marina I can see two gleaming Sabrecraft, a 37-footer named Little Frégate and the slightly larger Frigate Bird, both with twin 350 hp inboards.’
    • ‘A variety of twin-engine options were offered on the Coastal 2800 over the nine years of production, including factory installed, 225-hp OMC Sea Drives and a variety of gasoline inboards, from 220 to 270 hp.’
    • ‘Today, multilevel, multi-year limited warranties are standard on almost all outboard engines and a growing number of inboards, according to a survey by BoatU.S. (See charts at right.)’
    • ‘The inboards also make a small difference, but they may be too expensive to be worth it, and may not even be available.’
    • ‘The engine is a Chrysler 318 V - 8 inboard with a straight shaft.’
    • ‘The four-stroke cylinders do not have this oil coating and will rust when not run for long periods, just like four-stroke inboards do.’
    1. 1.1A boat with an inboard engine.
      • ‘The Blue Fin is still in rotation, but a 405-horsepower inboard with a speedometer and a sound system is the family boat of choice.’
      • ‘Some 56% of the boats used most often had propeller propulsion and of those boats with motors, nearly 60% were outboards and 26.7% were inboards.’
      • ‘The IPS props - which are smaller than a standard prop configuration - are also in perfect horizontal alignment with the boat's bottom, unlike inboards whose typical seven-degree down angle wastes energy.’