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- laden leg
- describes the loaded part of a voyage
- lagging
- heat insulation material to minimise heat transfer; used in steam pipes exhaust pipes boiler cold room etc.
- Laker
- a ship capable of transiting the St. Lawrence Seaway locks to trade in the Great Lakes between USA and Canada; the maximum beam and draught allowed in the lock is approximately 23.15 m and 26 feet fresh water respectively - this is equivalent to ship with a deadweight of about 20 000 tons
- lands
- of piston the vertical surfaces between the piston rings and also of the piston crown
- lane metre
- describes the capacity of a roll-on/roll-off vessel or ro-ro ship in term of the total length of lane for stowing vehicle on board
- larboard
- obsolete term for port which is opposite of starboard
- larnyard
- a cord or rope used for securing purpose eg hanging a whistle around the neck
- LASH
- stands for Lighter Aboard Ship; a specially designed ship to transport loaded dumb barges on board
- lashing
- 1. the act of tying objects together or securing them in position; 2. also refers to the rope used to do that
- latent heat
- the amount of heat required to change the state of a substance from a solid to a liquid or from a liquid to a gas; this heat cannot be detected by thermometer since there is no change in termperature
- latitude
- the distance of a position north or south of the equator mesaured in degrees and minutes
- launch
- 1. to get a ship waterborne; 2. a small ship used in harbour to ferry crew or others to and from shore
- laycan
- a ship chartering term which stands for laydays commencement and cancelling; specifies the earliest date on which laytime can commence and the latest date after which the charterer can opt to cancel the charter party
- laydays
- days allowed for cargo operation in a charter party i.e. laytime calculated in the number of days
- layering
- separation of fuel oil mixture of different densities into two layers in a tank
- laytime
- time allowed by the shipowner to the voyage charterer to carry out the cargo loading and/or discharging operations; laytime may be expressed as a certain number of days or number of tons of cargo loaded/unloaded per day
- lay up
- to take a ship out of service by anchoring or mooring at economical location; minimal crew is kept on board if the period is long
- lazarette
- 1. storage compartment for keeping provisions; 2. ship where people in quarantine are segregated
- lead
- a weight made of lead and tied with a scaled line that is used to measure the depth of water or find out the nature of seabed; pronounced led
- lee
- the area or side providing shelter against the wind
- lee shore
- shore that is on the leeward side of a ship i.e. her downwind side
- leeward
- the area on the lee side
- leeway
- the distance a ship is pushed off its heading by the action of wind
- length between perpendiculars
- the length of a ship between the forward and after perpendiculars; commonly abbreviated as LPP or LBP
- length overall
- the extreme fore and aft length of a ship measured from the foremost point of the stem to the aftermost point of the stern; commonly abbreviated as LOA
- letter of indemnity
- document whereby the issuer undertakes to renounce any claim which may arise in specified circumstances
- lien
- the legal right to keep possession of somebodys property till debt owed in connection with it is settled
- lifeboat
- a small boat carried on a ship and designed to sustain lives of crew and passengers if the ship has to be abandoned at sea; required to be provided onboard ocean going ships; sometimes written as life boat
- lifebuoy
- a ring made of buoyant material which is thrown overboard to rescue a person who has fallen into water; the ring is specially designed to keep the person afloat until he can be recovered from the water
- lifejacket
- a buoyant jacket which is worn to keep a person afloat in water; can be made of kapok cork or other equally buoyant material or of inflatable type
- lifeline
- 1. any rope or line thrown overboard to rescue a drowning person; 2. any line attached to a person for safety reasons
- liferaft
- an inflatable raft with a protective canopy to preserve the lives of persons in distress in the event of abandon ship; designed to automatically inflate and float free when the ship sinks; compulsory for ocean going ships
- life-saving appliances
- appliances carried on a ship for life-saving purposes for example lifeboat liferaft lifebuoy lifejacket etc.; LSA for short
- lighter
- a dumb barge for transporting goods to and from ship to lighten her for sailing in shallow water
- lighterage
- 1. charges paid for the use of a lighter; 2. loading and unloading of a lighter
- light ship
- a cargo ship when empty of cargo
- limber hole
- a small drain hole cut in a frame or plate to prevent water or oil from collecting
- liner
- 1. refers to a ship calling same ports regularly; 2. a renewable metallic sleeve inserted in a cylinder and designed to take the wearing action of a reciprocating piston
- liner terms
- of freight rate the freight is inclusive of carriage and cost of cargo handling at the loading and discharging ports
- list
- to heel or lean over to one side; a transverse inclination of a ship
- Lloyds Register of Shipping
- the British Classification Society or LR for short
- load water line
- the water line corresponding to the maximum draught to which a vessel is permitted to load, either by the freeboard regulations, the conditions of classifications or the conditions of service
- local time
- refers to the time in a particular port or country
- log
- instrument for measuring the speed of a ship and/or the distance run through water
- log book
- a journal which is used to record any event that may have occurred on board; for example engine room log deck log GMDSS log official log etc.
- longitude
- the distance of a position east or west of the prime meridian measured in degrees and minutes
- longitudinal bulkhead
- bulkhead lying in the fore and aft line of a ship
- longitudinal stress
- the stress experienced by a ships structure in the fore and aft direction; this is induced with the hogging and sagging of a ships hull
- longshoreman
- labourer who loads and discharges cargo at a wharf or dock side; another name for stevedore especially in USA
- Loran
- stands for "Long Range Aid to Navigation"; an obsolete electronic navigation system
- louvre
- an opening for ventilation purpose which has vanes fitted one on top of the other and sloped at about 45 degrees to keep out the rain
- lower explosive limit
- the limit below which the concentration of hydrocarbon gas in the air mixture is considered to be "too lean" ie insufficient hydrocarbon to support and propagate combustion; LEL in short
- lower flammable limit
- another name for lower explosive limit; LFL in short
- lubber
- describes a fellow who is clumsy and awkward
- lumpsum
- fixed amount irrespective of the quantity
- lumpsum charter
- vessel charter which pays a fixed sum for a specified cargo capacity
