B

219 Results
  • Body sections, frame lines

    The ship sections obtained by planes perpendicular to the centreline. They are drawn on a body plan and form part...

  • Boiler

    An apparatus used to produce steam, either for the main propulsion or for auxiliary machinery. A boiler is, in...

  • Boiler mountings

    Fittings on a boiler to ensure its safe operation: safety valves, main steam stop valve, feed check valve, water...

  • Boiler scale

    Hard deposit on the interior of a boiler plate or tube. The scale generally contains magnesium and calcium carbonates...

  • Boiler water treatment

    To reduce corrosion and scale formation in boilers, boiler water must be maintained in slightly alkaline conditions...

  • Boiling point, boiling temperature

    A temperature at which a liquid boils at a specific pressure. It is usually given at the atmospheric pressure.

  • Boil-off gas (BOG)

    LNG tankers are designed to carry natural gas in liquid form at a temperature of – 163°C, close to the vaporization...

  • Boil-off gas (BOG) combustion system

    BOG combustion systems are used only onboard LNG carriers. Excess BOG is sent to the engine room via gas heaters...

  • Boil-off gas (BOG) recovery system, BOG reliquefaction plant

    An onboard reliquefaction system that recovers boil-off gas in LNG carriers and returns it to the cargo tanks.

  • Boil-off rate (BOR)

    The amount of liquid that is evaporating from a cargo due to heat leakage and expressed in % of total liquid volume...

  • Bollard

    A rectangular base welded to the deck of the ship, upon which two vertical bitts are welded. Bollards are used...

  • Bollard pull

    The thrust developed at zero ahead speed. Bollard pull is the most commonly used measure of ship-assist tugs performance...

  • Bolsters

    Flatbeds used to transport damage-free cargoes such as components, pallets, bales, bundles, reels or crates. Heavy-duty...

  • Bonded goods

    Dutiable goods upon which duties have not been paid i.e. goods in transit or warehoused pending customs clearance.

  • Bonded store

    Place on a vessel where goods are placed behind seal until the time that the vessel leaves the port or country...

  • Bonding

    1. Adhesive and cohesive strength. 2. Connecting together metal parts to ensure electrical continuity.

  • Bonjean curves

    Curves of areas and moments of sections versus draught, plotted on the sheer plan.

  • Boom

    1. A long round spar hinged at its lower end, usually to a mast, and supported by a wire rope or tackle from aloft...

  • Boottop, boottopping

    The surface of the outside plating between light and load waterlines. It is the hull area which is most exposed...

  • Boss, hub

    The central portion of a propeller to which the blades are attached and through which the shaft end passes.

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