Maritime Terms, Abbreviations and Acronyms

Maritime abbreviations and acronyms go back to those days we used telegram and telex to communicate. The business model for telex and telegrams was “pay per letter”. Even though the telegrams and telexes have been retired, we still use the maritime abbreviations daily.

Below you will find a comprehensive list of terms, abbreviations, and acronyms used in the maritime industry, sorted in alphabetical order. You can search for an acronym or write a word and find the abbreviations where the word is included.

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Jet

A nickname for kerosene-range aviation turbine fuel. A somewhat longer expression, jet kero, also enjoys wide popularity as a substitute for the formal designation.

JET

Jet fuel

Jet A-1

ASTM's designation for the most common grade of aviation turbine fuel.

JET KERO

A shortened version of “jet kerosene.” See aviation turbine fuel.

Jett

Jettison

Jetties

Structural features that provide obstructions to littoral drift, control entrance currents, prevent or reduce shoaling in the entrance channel, maintain channel alignment, and provide protection from waves for navigation (EM 1110-2-1613).

Jettison

Act of throwing cargo or equipment (jetsam) overboard when a ship is in danger.

JIT

Just In Time: In this method of inventory control, warehousing is minimal or non–existent; the container is the movable warehouse and must arrive “just in time;” not too early nor too late.

Joint Rate

A rate applicable from a point on one transportation line to a point on another line, made by agreement and published in a single tariff by all transportation lines over which the rate applies.

Joint Service

Two or more shipping companies jointly operating a service

Joint Survey

An Inspection carried out by a surveyor on behalf of two parties with the cost generally being borne by both. Generally, cargo surveys often fall under this category, but surveys are carried out for a myriad of reasons, including but not limited to on and off-hire, vettings and damage surveys.

Joint Venture

A Joint Venture is a contractual arrangement whereby two or more parties control jointly an economic activity. The economic activity is carried through a separate enterprise (company or partnership, it is handled as a jointly controlled enterprise. Joint

JP-4

Jet B. A common grade of military jet fuel. The industry habitually calls this product naphtha-type jet because it has a lower boiling range than civil jet kero.

JP-5

A heart cut of jet A-1 favored aboard aircraft carriers for its high flash point.

JPCA

Japan Petrochemical Industry Association

JPN

Japan

JR

Yugoslav Register

JSA

Japanese Shipowners' Association

JSIA

Japanese Styrene Industry Association .

JST

Japan Standard Time (GMT+9)

Junk

Old rope no longer able to take a load, it was cut into shorter lengths and used to make mops and mats.

Jury Rig

A temporary repair to keep a disabled ship sailing until it could make port, such as a jury sail erected when the mast was lost or a jury rudder as an emergency means of steering when the ship’s rudder was damaged.

JV

Joint venture

K

Kilo or Knot

K

Ship Stability: Symbol for keel

K OW

Octanol-water partition coefficient. The ratio of a chemical's solubility in n-octanol and water at steady state; also expressed as P. The logarithm of P or K OW (i.e., log P or K OW) is used as an indication of a chemical's propensity of bioconcentration by aquatic organisms.

K.D.

Knocked down

K.D.F.

Knocked down flat

Kamsramax

A Kamsarmax type bulk carrier is basically a 82,000 dwt Panamax with an increased LOA = 229 m (for Port Kamsar in Equatorial Guinea).

Karl Fischer

The measurement of small amounts of water in oils and fats is most suitably done by the Karl Fischer procedure in which the water is reacted with a special reagent. Unlike methods using oven drying, the Karl Fischer method is specific for water. It is particularly suitable for water contents below 0.2% in oil.

KB

Ship Stability: Linear, distance from the keel to the center of buoyancy.

Keel

Longitudinal girder at lowest point of a ship, from which the framework is built up. The keel provides ship with stability and structural integrity.

Kelp Dredger

A vessel equipped for harvesting kelp seaweed

KERO

Kerosene

Kerosene

A petroleum product which boils between naphtha gasoil. This cut's distillation range can vary to accommodate other products. Many refiners want to take naphtha as high as 350 or 375 F. In those cases, the kerosene cut has a rather high initial boiling point. Many crudes permit a good quality kerosene to start as light as 320 –330 F. For some crudes, kero's final boiling point might come as low as 450 F while for others it may exceed 500 F. Aviation turbine fuel, jet gives kerosene a large outlet. Household heating and illuminating markets also consume kerosene.

Ketone

An important starting material and intermediate in organic synthesis. Many ketones of industrial significance are used as solvents, perfumes, and flavoring agents or as intermediates in the manufacture of plastics, dyes, and pharmaceuticals.

KG

Ship Stability: Height of center of gravity of the vessel above keel or baseline

KG

Kilogram

KI

Klasifikasi Indonesia

Kilogram

1,000 grams or 2.2046 pounds.

Kinematic viscosity

A measure of liquid's rate of flow under gravity. The standard test of this property determines the time a sample of material requires to drain through a laboratory vessel.

King Pin

A coupling pin centered on the front underside of a chassis; couples to the tractor.

KMC

cargo refrigerating system

KN

Knot(s)

KN or KTS or KNOTS

Nautical miles per hour

Knocked Down (KD)

Articles which are taken apart to reduce the cubic footage displaced or to make a better shipping unit and are to be re–assembled

Knocking

Preignition. If the gasolineair vapor in a motor's cylinders is too compressed, the heat produced will cause it to ignite without the aid of a spark. This uncontrolled combustion probably will not occur at the ideal moment to transfer energy and promote rotation of the crankshaft. In audible cases, the exploding fuel charge expands against a rising piston creating vibrations and an accompanying rattle.

Knot

One nautical mile (6,076 feet or 1852 meters) per hour. In the days of sail, speed was measured by tossing overboard a log which was secured by a line. Knots were tied into the line at intervals of ap- proximately six feet. The number of knots measured was then compared against time required to travel the distance of 1000 knots in the line.

Known Loss

A loss discovered before or at the time of delivery of a shipment.

Kommandittselskap (K/S)

Limited partnership. A form of shipfinancing

KOS

Kilos

KPH

Kilometres per hour

KPIA

Korean Petrochemical Industry Association .

KR

Korea or Korean Register

KRS

Koreans

KT

Knott(s)

KT

Kilo ton

KTM

Keel To Mast

Kyoto Protocol

International agreement, adopted under the UN Framework Convention on Climate Change (UNFCCC), which aims to reduce greenhouse gas emissions

L&D

Loss and Damage

L&R

Lake and rail

L. or LDN

Laden

L.B.H.

Length / breadth / height

L.T

Long tons

L.T.

Long Tons (2240 lbs)

L.T. or LT

Liner Terms

L.T. or LT or LTONS

Long tons

L/C

Lay Can or Letter of credit

L/C or LAYCAN or LC or LYCN

Laydays/Canceling date

L/C or LC

Letter of credit

L/D

Loading / discharging

L/I or LOI

Letter of indemnity

L/P

Loading Port

L/S or LS or LPS or LUMPS

Lumpsum

LA

Los Angeles (USA) or Letter of Authority or Letter of Appointment

Lacyhrymator

A material which produces an excess production of tear fluid when it comes into contact with the eye.

Laden

Loaded aboard a vessel.

Lading

Refers to the freight shipped; the contents of a shipment.

Lakers

Bulkers prominent on the Great Lakes, often identifiable by having a forward house which helps in transiting locks. Operating in fresh water, these ships suffer much less corrosion damage and have a much longer lifespan than saltwater ships.

LAKES

Great Lakes (US/CA)

Landbridge

Movement of cargo by water from one country through the port of another country, thence, using rail or truck, to an inland point in that country or to a third country. As example, a through movement of Asian cargo to Europe across North America.

Landed Cost

The total cost of a good to a buyer, including the cost of transportation.

Landing Certificate

Certificate issued by consular officials of some importing countries at the point or place of export when the subject goods are exported under bond.

Landing Craft

An open deck cargo vessel onto which cargo is loaded and unloaded over a bow door/ramp

Landing Gear

A support fixed on the front part of a chassis (which is retractable); used to support the front end of a chassis when the tractor has been removed.

Landing Ship (Dock Type)

A combat vessel designed for the transport of troops, using a semi submersible dock to launch landing craft or helicopters, and with ro-ro ramp facilities

LANE METER

whereby each unit of space (Linear Meter) is represented by an area of deck 1.0 meter in length x 2.0 meters in width.

Lanemeter

Primarily used to indicate the cargo capacity of a roll–on/roll–off car carrier. It is one meter of deck with a width of 2.5 to 3.0 meters.

Lard

The rendered fat of the pig. One of the traditional cooking fats, especially in Europe and USA. The best quality lard is obtained from the internal fats surrounding the kidney etc. Pork backfat is significantly softer in character.

LASH

Lighter Aboard Ship

LAT

Latitude or Lowest Astronomical Tide

Latex (pl. latices)

A water emulsion of a synthetic rubber or plastic obtained by polymerization and used especially in coatings, paints and adhesives. Latices include a binder dispersed in the water and form films by fusion of the plastic particles as the water evaporates. Properties of these films, such as hardness, flexibility, toughness, adhesion, color retention, and resistance to chemicals, depend on the composition of the plastic.

Latex Tanker

A tanker for the bulk carriage of latex

Lauric Acid

Lauric acid is a commonly distributed, naturally occurring saturated fatty acid (C12:0). The richest common sources of lauric acid are coconut, palm kernel and babassu oils.

Lauric Fats and Oils

The largest volume lauric fats and oils are coconut and palm kernel, which are vital to the manufacture of surfactants among other applications. Lauric oils typically contain 40-50% lauric acid (C12) in combination with lesser amounts of other relatively low-molecular-weight fatty acids.

Lauric Oils

Oils containing 40-50% lauric acids (C12 ) in combination with other relatively low molecular weight fatty acids. Coconut and palm kernel oils are principal examples.

LAYCAN

Laydays/cancelling

Laycan

The period when a spot chartered ship must arrive to load a cargo. The word combines “laydays” and “cancellation” as does the concept. Charter parties specify a range of days when the terminal will receive the ship which corresponds to the laydays of the stem. This period ends with the last moment a ship can give notice of readiness to berth and lift a cargo within its laydays. If the tanker does not arrive by that point, the charterer usually has several options including cancelling the charter.

Laydays

The ship-loading window allotted to a parcel of oil. A supplier names a period of time when his customer must lift the oil he has purchased. Cargoes get several days, barges perhaps a single day, consistent with the time required to load the quantity involved. The window takes account of the flexibility needed in commercial shipping. But it also considers shore tank capabilities and the need to use terminals and berths efficiently. Laydays, also called stem dates, can become the identity tag of a cargo. A refinery, for instance, which continuously produces and ships a grade of motor gasoline cannot make many practical distinctions between one lot and another. Hence, the trade talks about some oil company's July 14-16 unleaded regular or December7-9 DERD –2494.

Laytime

A specific number of hours, named in the pertinent charter party, a tanker must prepare to spend on berth at the shipowner's expense. Details vary from one fixture to another. Usually, though, owner and charterer agree on a total laytime for a voyage which must accommodate loading and discharge. The charterer pays for any hours over that number as demurrage.
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