H

109 Results
  • High velocity vent, also high velocity venting valve

    A device to prevent the passage of flame, consisting of a mechanical valve which adjusts the flow opening in accordance...

  • High-lift cylinders

    Hydraulic cylinders used to lift panels of stacking hatch covers during operation.

  • High-pressure waterjet abrasive cutting

    An innovative cutting process for metals, refractories, glass and many other materials. It provides a very clean...

  • HiLoad System

    A new concept for offshore loading developed by Hitec Marine AS.

  • Hogging

    The tendency of a ship to arch up amidships as the result of improper weight distribution (too much weight put...

  • Hoist

    A cable used by helicopters for lifting or lowering persons in a pick-up operation. Also a device used for lifting...

  • Hold

    A large space below deck for the stowage of cargo; the lowermost cargo compartment.

  • Hold space

    The space enclosed by the ship structure in which an independent cargo tank is situated, (IBC Code).

  • Hold space of gas carrier

    The space enclosed by the ship structure in which a cargo containment system is situated, (IGC Code).

  • Holding tank

    A tank used for collection and storage of sewage, (MARPOL).

  • Holding-down bolts

    The securing bolts which are usually fitted for fixing main propulsion machinery and thrust blocks.

  • Homogeniser

    A milling machine equipped with concentric gears with conical surfaces that grind heavy fuel oil as it is pumped...

  • Hopper barge

    A barge which loads material dumped into it by a dredger and discharges it through the bottom.

  • Hopper side tanks

    Tanks used for ballast or for stability when carrying certain cargoes in bulk carriers. Also referred to as topside...

  • Hopper unit

    A ship equipped for carrying spoils or dredged material. Split hopper unit opens longitudinally around hinges.

  • Horizontal fixed position (pipe welding)

    The position of a pipe joint in which the axis of the pipe is approximately horizontal, and the pipe is not rotated...

  • Horizontal rotated position (pipe welding)

    The position of a pipe joint in which the axis of the pipe is approximately horizontal and welding is performed...

  • Horizontal welding position (fillet weld)

    The welding position in which the weld is on the upper side of an approximately horizontal surface and against...

  • Hose assembly

    Metallic or non-metallic hose with end fittings, ready for installation.

  • Hose testing

    A test carried out to demonstrate the tightness of structural items not subjected to hydrostatic or leak testing...

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