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

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 (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.

A resin used in emulsion paints.

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

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.

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

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.

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

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

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

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

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.

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.

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

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.

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

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

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

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