109 Results
  • Habitability

    The acceptability of the conditions of a vessel in terms of vibration, noise, indoor climate and lighting as well...

  • Habitat

    An underwater structure installed on the ocean floor which is permanently or periodically manned. It is generally...

  • Halon

    A halogenated hydrocarbon used in fire fighting which inhibits flame propagation. The use of halogenated hydrocarbons...

  • HAM (Humid Air Motor) method

    Humidification of combustion air used to reduce NOx emissions. In the HAM unit, relatively hot and dry air from...

  • Hampered vessel

    A vessel restricted by its ability to manoeuvre by the nature of its work or its deep draft.

  • Handbook

    A short book containing information or instructions.

  • Handing over

    Delivery of the ship to its owner.

  • Handle, also handgrab

    Bent round bar of various sizes for use above access openings, on miscellaneous access opening covers or on hatch...

  • Handrail

    A long bar fixed to the side of a passage or stairs for holding onto it.

  • Harbour dues

    Various local charges demanded from all seagoing vessels entering a harbour to cover maintenance of channel depths...

  • Harbour master

    A person usually having the experience of a master mariner and having a good knowledge of the characteristics of...

  • Harbour, haven

    Any place which offers good anchorage and fairly safe station for ships, or where ships can be sheltered from wind...

  • Hard coating

    A coating which changes chemically during its curing process; normally used for new constructions.

  • Hardener

    In two-component materials, the component that produces chemical reaction linking the molecular chains of the binder...

  • Hardening

    A type of steel heat treatment. The steel is heated to 850-950°C and then rapidly cooled by quenching in oil or...

  • Hardness

    1. The ability of a material to resist plastic deformation. 2. A measure of the ability of a sample of water to...

  • Hardness of the dry paint film

    The ability of the dry paint film to resist mechanical impacts as scratching or penetration by hard object.

  • Harmonics

    Generally, harmonics are oscillations in the base power frequency.

  • Hatch coaming

    Vertical plating bounding a hatch in order to stiffen its edges and resist entry of water to the space below.

  • Hatch cover

    A large steel structure fitted over a hatch opening to prevent the ingress of water into the cargo hold. It may...

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