WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

L

227 results

Lashing

marine

Wires, chains, ropes, or straps used to secure cargo on a ship. See also container lashing equipment.

Lashing bridge

marine

A strong steel structure installed between hatches to permit the stowage of an additional tier of containers or heavier containers in the upper tier. Lashings can be applied at a higher level but can also remain short.

Latent heat

energy

Latent heat (also known as latent energy or heat of transformation) is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process.

Latex

marine

A resin used in emulsion paints.

Lattice tower

energy

A lattice tower or truss tower is a freestanding vertical framework tower.

Launch

marine

A motorboat intended for operation in ports, bays and on calm water, limited to a wind force not exceeding 4 Beaufort scale. Seagoing launches are units intended for seagoing service, limited to a wind force not exceeding 6 Beaufort scale.

Launch and recovery system of the underwater unit

marine

The lifting equipment necessary for raising, lowering and transporting the underwater unit between the surface and the working site.

Launching

marine

The transfer of a ship from land to water. The traditional launching is the sliding of a ship by its own weight into the water down inclined launch ways.

Launching appliance or arrangement

marine

A means for transferring a survival craft or rescue boat from its stowed position safely to the water.

Launching ramp angle

marine

The angle between the horizontal and the launch rail of the lifeboat in its launching position with the ship on even keel.

Launching ramp length

marine

The distance between the stern of the lifeboat and the lower end of the launching ramp.

Layout

marine

The arrangement of plant and equipment in, for example, a machinery space, or a drawing thereof.

Laytime

marine

The time allowed by the shipowner to the voyage charterer or bill of lading holder for loading and/or discharging the cargo. It is expressed as a number of days or hours or as a number of tons per day.

Lay-up

marine

Temporary cessation of trading of a ship by a shipowner during a period when there is a surplus of ships in relation to the level of available cargoes.

Lead acid battery

energy

The lead–acid battery is the earliest type of rechargeable battery.

Lead shielding

energy

Lead shielding refers to the use of lead as a form of radiation protection to shield people or objects from radiation so as to reduce the effective dose.

Lead-cooled fast reactor

energy

The lead-cooled fast reactor is a nuclear reactor design that features a fast neutron spectrum and molten lead or lead-bismuth eutectic coolant.

Leading Edge

energy

The edge of a turbine blade that faces toward the direction of rotation.

Leading pair

marine

The first pair of a folding hatch cover to fold and stow.

Leak

marine

1. A crack or hole through which liquid or gas escapes. 2. The passing of gas, water, etc. through a crack or hole.

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