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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ICS

International Chamber of Shipping

ICS

Institute of Chartered Shipbrokers

ICW

In connection with

ID

Import duty or Inside diameter

IDL

International Date Line

IE

Stands for “Immediate Exit.” In the U.S., Customs IE Form is used when goods are brought into the U.S. and are to be immediately re–exported without being transported within the U.S.

IFF

Institute of Freight Forwarders

IFO

Intermediate fuel oil

IG

Inert Gas

IGC

International Code for the Construction and Equipment of Ships Carrying Liquified Gases in Bulk (IMO)

IGM

Import general manifest

Ignition source

Includes heat, sparks, flames, static electricity and friction. Ignition sources should always be eliminated.

IGS

Inert Gas System

IGS

Inert gas system. If tankships let air fill their tanks as they pump out oil, an explosive mixture of hydrocarbon vapor and oxygen can form. Any spark, such as static electricity, could cause catastrophe. To eliminate this danger, modern vessels vent their tanks with gas which will not support combustion. Some use oxygen-depleted exhaust from the ship's engines. The most sophisticated systems fill empty space in tanks with nitrogen.

IHP

Indicated Horse Power

ILA

International Longshoremen's Association

ILG

Industry Lifeboat Group

Illuminating kerosene

see BURNING KEROSENE

ILO

International Labour Organization

ILOHC

In Lieu of Hold Cleaning

ILOW

In Lieu of Weighing

iMAS

integrated Marine Assurance System - BP's vetting system.

IMB

International Maritime Bureau

IMCO

Intergovernmental Maritime Consultitive Organisation

IMDG

International Maritime Dangerous Goods (Code)

IMDG CODE

International Maritime Dangerous Goods Code

IMF

International Monetary Fund

IMGS

International Medical Guide for Ships

Immediate Exportation

An entry that allows foreign merchandise arriving at one port to be exported from the same port without the payment of duty.

Immiscible

In this guidebook, means that material does not mix readily with water.

Immunity

A thermodynamically stable condition

Immunotoxic

Capable of causing injury to the immune system and to interfere with body defense mechanisms.

IMO

International Maritime Organisation: A specialised agency of the United Nations based in London and dealing with maritime affairs. Originally formed to evolve international machinery to improve safety at sea IMO has now broadened its brief to include th

IMO Ship Type

Ship type 1, 2 or 3 refers to the design of ship needed to carry a particular cargo depending on its environmental and safety profile. The designs are outlined in the IBC Code. Type 2(k) relates to the provision for Ship Type identified in column e of chapter 17 of the IBC Code that might be subject to regulation 4.1.3 of Annex II of MARPOL 73/78

IMO Type 1

A type 1 ship is a chemical tanker intended to transport chapter 17 products with very severe environmental and safety hazards which require maximum preventive measures to preclude an escape of such cargo.

IMO Type 2

A type 2 ship is a chemical tanker intended to transport chapter 17 products with appreciably severe environmental and safety hazards which require significant preventive measures to preclude an escape of such cargo.

IMO Type 3

A type 3 ship is a chemical tanker intended to transport chapter 17 products with sufficiently severe environmental and safety hazards which require a moderate degree of containment to increase survival capability in a damaged condition.

Impingement corrosion

See Erosion Corrosion

Import

To receive goods from a foreign country.

Import License

A document required and issued by some national governments authorizing the importation of goods.

Impurities

This refers to insoluble extraneous matter found in oils and fats. It may consist of dirt and miscellaneous debris, mineral matter, nitrogenous materials of animal or vegetable origin and carbohydrate substances such as vegetable fibres. Impurities are determined by weighing the dry residue obtained after they are separated from the sample which has been dissolved in a specific solvent, usually petroleum ether.

IMT

CMS -Incident Management Team

IN &/OR OVER

Goods carried below or on deck

In Bond

Cargo moving under Customs control where duty has not yet been paid.

In Gate

The transaction or interchange that occurs at the time a container is received by a rail terminal or water port from another carrier.

IN LIQ

In liquidation

In the Offing

Currently means something is about to happen, as in - "There is a reorganization in the offing." From the 16th century usage meaning a good distance from shore, barely visible from land, as in - "We sighted a ship in the offing."

In Transit

In transit, or in passage.

In-line blending

The practice of pumping various motor gasoline components from their individual storage tanks into a single pipe and mixing them in the process. Gasoline made in such fashion generally is intended for bulk in shipment. Typically it flows directly aboard a vessel after blending. Refiners with limited capability to store a particular grade of gasoline frequently use this method.

IN.

Inch (-es)

Incentive Rate

A lower–than–usual tariff rate assessed because a shipper offers a greater volume than specified in the tariff. The incentive rate is assessed for that portion exceeding the normal volume.

Incinerator

A vessel equipped for the (now illegal) incineration of waste material at sea

INCL

Including

INCLOT

Including Overtime

INCLOT or IOT

Including Overtime

INCO TERMS

Internaitonal Commercial Terms: A list of standard contract terms which specify the obligations for the delivery of goods in International Contracts particularly traded commodities. It is compiled and published the International Chamber of Commerce.

INCOTERMS

The recognized abbreviation for the International Chamber of Commerce Terms of Sale. These terms were last amended, effective July 1, 1990.

IND

Independent or Indication

Indemnity Bond

An agreement to hold a carrier harmless with regard to a liability.

Independent Action

Setting rate within a conference tariff that is different from the rate(s) for the same items established by other conference members.

Independent surveyors

The inspection and testing organizations hired by petroleum companies to determine how much and what quality of oil changed hands in performance on a deal. In the interest of impartiality, buyers and sellers usually share the cost of inspections.

Independent Tariff

Any body of rate tariffs that are not part of an agreement or conference system.

Indication

A suggestion given by a prospective buyer or seller of what he might do. Indications imply no commitments. At this level of discussions, folks can change their minds without serious consequences.

INDO

Indonesia

Inducement

Placing a port on a vessel’s itinerary because the volume of cargo offered at that port justifies the cost of routing the vessel.

Inert Gas

The atmosphere introduced into the ullage space of a tank to reduce its oxygen content to 8% O2 or less in order to prevent ignition of the vapour or cargo. Inert gas on vessels is usually the cleaned products of combustion from a boiler or inert gas gen

Inert Gas Blanketing

Inert gas, usually nitrogen, put in the ullage space in a pressurised tank to prevent air oxidation of the product.

Inert Gas Processing Pontoon, non propelled

A non propelled pontoon used for the purpose of generating Inert Gas

Infantry Landing Craft

A combat vessel with a bow ramp for landing or loading infantry

INFO

Information

Infrared Radiation

The visible light is only a small fraction of the electromagnetic waves. Waves with wavelength longer than the visible red are generally called infrared radiation. Infrared radiation is that section of the spectrum covering the range from the limit of the visible spectrum to the shortest microwave. Both infrared and ultraviolet spectra are useful in the analysis and identification of fats.

Inherent Vice

An insurance term referring to any defect or other characteristic of a product that could result in dam- age to the product without external cause (for example, instability in a chemical that could cause it to explode spontaneously). Insurance policies may exclude inherent vice losses.

Initial boiling point

The temperature where a natural material or fraction begins to boil.

Inland Barge Tow

Towboats push barges on the nation's inland waterways loaded with materials and products that are the building blocks of America's economy - coal, grain, petroleum products, petrochemicals, fertilizers, sand, gravel, metal scrap, etc. One tow can be comprised of anywhere from one to 40 barges

Inland Barges

Self-propelled barges or dumb barges employed in port areas, on inland waterways sheltered or estuarial waters, which are not classified as seagoing vessels, including tankers not covered by international convention. Inland barges may be regulated by local, national or regional regimes.

Inland Bill Of Lading

An inland bill of lading allows the transporter to move goods across domestic land, via rail or truck. If the goods are to be shipped overseas, an addition document known as an "ocean bill of lading" is required. The inland bill only allows the materials to reach the shore, while the ocean bill allows its transport overseas.

Inland Carrier

A transportation line that hauls export or import traffic between ports and inland points.

INMARSAT

International Maritime Satellite (organization): An international telecommunications company founded in 1979, originally as an intergovernmental organization. It operates a fleet of telecommunications satellites

INNNGWB

If New York, not north of George Washington bridge

Inorganic

Not based on a carbon structure eg caustic soda, phosphoric acid

Inorganic

Inorganic is said of any substance in which two or more chemical elements other than carbon are combined. Every chemical is either inorganic or organic.

INS

Integrated Navigation System

INS

Insert or Insurance

INSP

Inspection or Inspector

Inspection Certificate

A certificate issued by an independent agent or firm attesting to the quality and/or quantity of the merchandise being shipped. Such a certificate is usually required in a letter of credit for commodity shipments.

INST.

Instant or Present month

INST.

Clauses oficially accepted by the Institute of clauses London Underwriters

Installment Shipments

Successive shipments are permitted under letters of credit. Usually they must take place within a given period of time.

Insulated Container

A container insulated on the walls, roof, floor, and doors, to reduce the effect of external temperatures on the cargo.

Insulated Container Tank

The frame of a container constructed to hold one or more thermally insulated tanks for liquids.

Insurance with Average–clause

This type of clause covers merchandise if the damage amounts to three percent or more of the in- sured value of the package or cargo. If the vessel burns, sinks, or collides, all losses are fully covered. In marine insurance, the word average describes partial damage or partial loss.

Insurance, All–risk

This type of insurance offers the shipper the broadest coverage available, covering against all losses that may occur in transit.

Insurance, General–Average

In water transportation, the deliberate sacrifice of cargo to make the vessel safe for the remaining cargo.Those sharing in the spared cargo proportionately cover the loss.

Insurance, Particular Average

A Marine insurance term which refers to partial loss on an individual shipment from one of the perils insured against, regardless of the balance of the cargo. Particular–average insurance can usually be obtained, but the loss must be in excess of a certain percentage of the insured value of the shipment, usually three to five percent, before a claim will be allowed by the company.

Integrated oil companies

Organizations which find, produce, transport, and refine oil, and market oil products. Less complete enterprises concentrate on a part of this sequence. The industry calls its largest integrated companies the majors.

INTERCARGO

International Association of Dry Cargo shipowners

Interchange Point

A location where one carrier delivers freight to another carrier.

Interchangeabililty

All fats have a common basic chemical structure, being triglycerides. However, because the fatty acids in combination vary, the physical properties of different fats are not identical. In general, liquid character is imparted by unsaturated acids and by short chain length saturated acids. Solid character is imparted by long chain saturated acids or by unsaturated acids in the transconfiguration. Since liquid oils can be changed by hydrogenation into solid fats, a substantial degree of interchangeability exists between the different products. This interchangeability is however limited. For example, it is not practicable to turn saturated (solid) acids in unsaturated (liquid). Also, the short chain saturated acids impart certain desirable qualities which cannot be obtained otherwise. Nonetheless, interchangeability is an important factor in determining the market price relationship between various oils.

Intercoastal

Water service between two coasts; in the U.S., this usually refers to water service between the Atlantic and Pacific or Gulf Coasts.

Intercrystalline Corrosion

Corrosion in or adjacent to the grain boundaries of a metal
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