WÄRTSILÄ
Encyclopedia of Marine and Energy Technology

L

227 results

Lightships

marine

Red vessels on some hidden rock, reef or sand, and by night exposing characteristic lights. Their object is to mark outstanding dangers or port approaches.

Light-water reactor

energy

The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator.

Lightweight check, lightweight survey

marine

A procedure which involves auditing all items which are to be added, deducted or relocated on the ship at the time of the inclining test so that the observed condition of the ship can be adjusted to the lightship condition.

Lignite

energy

Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat.

Lignocellulosic biomass

energy

Lignocellulose refers to plant dry matter (biomass), so called lignocellulosic biomass.

Limber hole

marine

A small hole cut in a plate near the bottom of the frame or other structural member to permit the passage of water or oil.

Limescale

energy

Limescale is a hard chalky deposit, consisting mainly of calcium carbonate (CaCO3), that often builds up inside kettles, hot water boilers, and pipework, especially that for hot water.

Line entanglement freeing system, also cutter system, net protector

marine

Cutter blades mounted on the propeller to sever fishing lines, drift nets or discarded tow lines and hawsers.

Line regulation

energy

Line regulation is the ability of a power supply to maintain a constant output voltage despite changes to the input voltage, with the output current drawn from the power supply remaining constant.

Line throwing appliance

marine

A gun or rocket device which can project a light line between vessels.

Linear circuit

energy

A linear circuit is an electronic circuit which obeys the superposition principle.

Linear regulator

energy

In electronics, a linear regulator is a system used to maintain a steady voltage.

Linear winding

energy

In the linear winding method, a winding is produced by winding the wire onto a rotating coil body, component or coil carrying or coil forming device.

Line-commutated HVDC system

energy

Line-commutated indicates that the conversion process relies on the line voltage of the AC system to which the converter is connected in order to effect the commutation from one switching device to its neighbour.

Lineman

energy

A lineman is a tradesman who constructs and maintains electric power transmission and distribution lines.

Liner conference

marine

Shipping companies operating a service in common between designated areas. Conference partners agree on special freight rates and terms for the trade in order to stabilize market and service.

Liner service

marine

Cargo ships (liners) operating on fixed itineraries or regular schedules and established rates available to all shippers.

Lines, Lines Plan

marine

A set of lines showing the moulded form of the hull projected on three planes perpendicular to each other.

Lineworker

energy

A lineworker is a tradesman who constructs and maintains electric power transmission and distribution lines.

Linkspan

marine

Adjustable bridge ramp at specially-constructed berth, designed to link up with axial stern ramps of ro-ro vessels.

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