Please enter a keyword to search or click a letter below to browse the list of abbreviations and definitions through our glossary index.


Search Results for A
  • Ampere or Area or Aft 
  • Ship Stability: Area, generally. 
  • A & CP 
    Anchors and chains proved 
  • A Square Meal 
    In good weather, crews' mess was a warm meal served on square wooden platters. 
  • A.G. OR AG 
    Arabian Gulf 
  • A.O.E 
    Any one event 
  • A.O.R. 
    Any one risk 
  • A/ 
  • A/B 
    Able bodied seaman, a member of the crew who is able to perform all duties of an experienced seaman. 
  • A/C 
    Account or Air Changes 
  • A/E 
  • A/F 
    Also for (referring to port/s to be touched by ship) 
  • A/H 
    Anchor Handling 
  • A/O 
    and/or; Account of 
  • A/R 
    All risks or Against all risks 
  • A/R 
    Arrived or Antwerp - Rotterdam range 
  • A/S 
    Account sales or Alongside or After sight 
  • A1 
    First class condition 
  • AA 
    Always afloat or Always accessible or Apparent altitude 
  • AAAA 
    Always afloat always accessible 
  • AAC 
    Alaska Administrative Code 
  • AAGR 
    Average Annual Growth Rate  
  • AAOSA 
    Always afloat or safely aground 
  • AAPA 
    American Association of Port Authority 
  • AAR 
    Against all risks or All and any risk 
  • AARA 
    Amsterdam-Antwerp-Rotterdam Area 
  • AASO 
    Association of American Shipowners 
  • AB 
    Above bridges or Answer Back 
  • Abaft 
    A point beyond the midpoint of a ship’s length, towards the rear or stern. 
  • Abandon 
    A proceeding wherein a shipper/consignee seeks authority to abandon all or parts of their cargo. 
  • Abatement 
    A discount allowed for damage or overcharge in the payment of a bill. 
  • ABB 
    All Buoy Berth 
  • ABCU 
    Automated Bridge Control System For Unattended Engine Room 
  • ABI 
    U.S. Customs’ “Automated Broker Interface,” by which brokers file importers’ entries electronically. 
  • Aboard 
    Referring to cargo being put, or laden, onto a means of conveyance. 
  • Above Board 
    Anything on or above the open deck. If something is open and in plain view, it is above board. 
  • Above deck 
    On the deck (not over it – see ALOFT)  
  • ABS 
    American Bureau Of Shipping 
  • Absolute Viscosity 
    An observation of liquid's rate of flow under pressure applied to neutralize density's influence. This property, sometimes called dynamic viscosity, converts to kinematical viscosity by division. With density ex-pressed in gramscm, centistokes the units o
  • Absorption 
    One carrier assumes the charges of another without any increase in charges to the shipper. 
  • Abt 
  • Abv 
  • ACC 
    American Chemistry Council 
  • Accelerated Corrosion Test 
    Corrosion test carried out under more severe conditions that will yield results in a shorter time than in service 
  • Acceptance 
    A time draft (or bill of exchange) that the drawee (payer) has accepted and is unconditionally obligated to pay at maturity. Broadly speaking, any agreement to purchase goods under specified terms. 
  • Accessorial Charges 
    Charges that are applied to the base tariff rate or base contract rate, e.g., bunkers, container, currency, destination/delivery. 
  • Accommodation Platform, jack up 
    A jack up offshore accommodation platform 
  • Accommodation Platform, semi submersible 
    A semi submersible offshore accommodation platform 
  • Accommodation Ship 
    A vessel providing accommodation for those working on other vessels and installations 
  • Accommodation Vessel, Stationary 
    A stationary accommodation vessel 
  • ACCT 
  • Acetaldehyde 
    An aldehyde used as a starting material in the synthesis of acetic acid, n-butyl alcohol, ethyl acetate, and other chemical compounds. 
  • Acetate 
    An ester formed from acetic acid and an alcohol 
  • Acetic acid 
    Acetic acid is a key organic intermediate used in the preparation of metal acetates, used in some printing processes; vinyl acetate; acetic anhydride, and volatile organic esters, such as ethyl and butyl acetates. 
  • Acetic anhydride 
    The most important of the organic anhydrides, used to manufacture pain-relieving pharmaceuticals (aspirin, paracetamol), modified starches, emulsifiers, liquid crystal polymers, dyestuffs and cellulose acetate, a major ingredient in photographic films and
  • Acetone 
    An organic solvent of industrial and chemical significance, acetone is capable of dissolving many fats, resins and cellulose esters. It is used extensively in the manufacture of artificial fibers and explosives, as a chemical intermediate in pharmaceutica
  • Acetyl 
    Any chemical compound with an acetate group.  
  • ACGIH 
    American Conference of Governmental Industrial Hygienists. This organization includes professionals in government and education involved in occupational safety and health programs. One important function of this group is the determination and publication
  • Acid 
    Any substance that in water solution tastes sour, changes the color of certain indicators, promotes certain chemical reactions, etc.. Examples of acids include inorganic substances such as sulfuric, nitric, and phosphoric acids, and organic compounds such
  • Acid Oil 
    Acid oil is a general term for a by-product obtained from the alkali refining of oils and fats. During alkali refining the free fatty acids are neutralised with alkali and this soapstock containing some emulsified neutral oil is separated. Acidification o
  • Acid Pre-Treatment 
    The crude oil or fat is pre-treated with phosphoric acid or citric acid to remove impurities such as gums, mucilaginous materials and phosphatides present. Also referred to as "degumming", it is essential since it removes impurities which would otherwise
  • Acid Value 
    This is defined as the number of milligrams of potassium hydroxide required to neutralise the free fatty acids in one gram of fat. Since acid value is an indication of the extent of hydrolysis and deterioration, oils with low acid value are sought after. 
  • Acidity 
    Free fatty acids have, as the name implies, a weak acidic nature. There will be a naturally occurring level of these present in each oil and levels can be further increased by hydrolysis (water breakdown) of triglyceride. The level of acidity may be expre
  • Acidulate soapstock (Acid Oil) 
    Soapstock, which contains mainly soaps and entrained neutral oil, is treated with sulphuric acid and heated to decompose the soaps. This produces a layer of oil of high free fatty acid content (acid oil) and an aqueous phase which is separated and treated
  • ACOT 
    Advisory Committee of Offshore Technology 
  • ACP 
    African, Caribbean, Pacific countries 
  • Acquiescence 
    When a bill of lading is accepted or signed by a shipper or shipper’s agent without protest, the shipper is said to acquiesce to the terms, giving a silent form of consent. 
  • Acquittance 
    A written receipt in full, in discharge from all claims. 
  • Acrylate elastomer 
    In latex paints, textile applications (backcoating), emulsion polymers for paper coating; as pulp additives, in floor polishes & sealants (resinous & polymeric coatings), in adhesives. 
  • Acrylic acid 
    Acrylic acid and the basic alkyl esters (methyl, ethyl, butyl and 2-ethylhexyl esters) are important monomers used for the manufacture of polymer dispersions, adhesives, flocculants, detergents, varnishes, fibers and plastics as well as chemical intermedi
  • Acrylic esters 
    When polymerized, acrylic esters, esters derived from acrylic acid, are the film-forming components of acrylic paints, coatings, textiles, adhesives, plastics and other applications.  
  • Acrylic fibers 
    Acrylic fibers are artificial, thermoplastic fibers made from acrylonitrile. Fabrics produced from acrylic fibers wash and dry easily 
  • Acrylonitrile 
    Acrylonitrile is a chemical intermediate used in acrylic fibers, ABS (acrylonitrile-butadiene-styrene), SAN (styrene-acrylonitrile) and NBR (nitrile-butadiene-rubber).  
  • ACS 
    American Chemical Society or Arab Classification Society 
  • ACS or ACE 
    U.S. Customs’ master computer system, “Automated Commercial Systems.” Now being replaced by the Automated Commercial Environment system. 
  • Act of God 
    An act beyond human control, such as lightning, flood or earthquake. 
  • Activation 
    Changing the condition of steel from passive to active 
  • Activation Potential 
    The electrode potential at which a steel is changed from passive to active condition 
  • Active State 
    state of a corroding metal surface which is below the passivation potential and associated with uniform corrosion 
  • Activity 
    The level of catalyst's ability to do its work. The scale descends from fresh (full capacity right from the box or rejuvenator) to spent (coated, poisoned, or other wise neutralized.) 
  • Actual condition 
    Ship Stability: A condition of the vessel that is observed. 
  • Actual specifications 
    The quality reports on a specific parcel of fuel or feedstock. Such specifications do not constitute guarantees on the oil unless the seller says so. But they give a good description of the product available aboard a vessel or in a storage tank. 
  • Acute 
    A short term period of action measured in seconds, minutes, hours, or days 
  • Acute (aquatic) toxicity 
    Adverse effects that occur rapidly as a result of a short-term exposure to a chemical or physical agent. In fish or other aquatic organisms, effects that occur within a few hours, days or weeks are considered acute. Generally, acute effects are severe, th
  • Acute Effects of Overexposure 
    Refers to the adverse effects that normally are evident immediately or shortly after exposure to a hazardous material without implying a degree of severity 
  • Acute toxicity 
    Adverse effects produced by single exposure to substance 
  • AD 
    After date 
  • Ad val. 
    Ad Valorem (duty) 
  • Ad Valorem 
    A term from Latin meaning, “according to value.” Import duty applied as a percentage of the cargo’s dutiable value. 
  • Ad valorum 
    Means “at Value” a rate of freight based on the value of the goods.  
  • AD.VAL. 
    According to value (ad valorem) 
  • ADA 
    All Details About 
  • ADCOM 
    Address Commission  
    Address commission 
  • ADD 
  • ADD'L 
  • Added Weight Method 
    Ship Stability: A method of solving for damage stability where the water that enters the vessel is considered an added weight. 
  • Addendum 
    Additional chartering terms at the end of a charter party 
  • Additives 
    In many plastic products, the polymer is only one constituent. In order to arrive at a set of properties appropriate to the product, the polymer is almost always combined with other ingredients, or additives, which are mixed in during processing and fabri
  • ADEC 
    Alaska Department of Environmental Conservation 
  • ADF 
    automotive diesel fuel 
  • ADF&G 
    Alaska Department of Fish and Game (State Agency) 
  • Adm 
    Admiralty: Refers to marine matters such as an Admiralty Court. 
  • Administrative Law Judge 
    A representative of a government commission or agency vested with power to administer oaths, examine witnesses, take testimony, and conduct hearings of cases submitted to, or initiated by, that agency. Also called Hearing Examiner. 
  • ADNR 
    The transport of dangerous goods on the River Rhine and most inland waterways in Europe is regulated by ADNR. 
  • ADV 
  • Advance 
    To move cargo up line to a vessel leaving sooner than the one booked. (See also Roll.) 
  • Advanced Charge 
    Transportation charge advanced by one carrier to another to be collected by the later carrier from the consignor or consignee. 
  • Advanced Notice of Arrival (ANOA) 
    Any vessel entering United States waters from a foreign port is required to give a 96–hour ANOV. Any vessel of 300 gross registered tonnage and greater is required to give the ANOA to the U.S. Coast Guard’s National Vessel Movement Center. Any vessel unde
  • Adventure 
    Shipment of goods on shipper’s own account. A bill of adventure is a document signed by the master of the ship that carries goods at owner’s risk. Also, a term used in some insurance policies to mean a voyage or a shipment. 
  • Advice of Shipment 
    A notice sent to a local or foreign buyer advising that shipment has gone forward and containing details of packing, routing, etc. A copy of the invoice is often enclosed and, if desired, a copy of the bill of lading. 
  • Advising Bank 
    A bank operating in the seller’s country that handles letters of credit on behalf of a foreign bank. 
  • AE 
    Auxilary Engine 
  • AECC 
    Association for Emissions Control by Catalyst, an association affiliated to Cefic. 
  • AF 
    All Fast or Advance Freight 
  • AFA 
    All Figures About 
  • AFAA 
    as far as applicable 
    Arrival first compulsory sea pilot station 
    The hiring of a ship in whole or part 
  • Affreightment, Contract of 
    An agreement by an ocean carrier to provide cargo space on a vessel at a specified time and for a specified price to accommodate an exporter or importer. 
  • AFMT 
    After fixing main terms 
  • AFRA 
    Average Freight Rate Assessments. A monthly estimate of tanker rates issued by London tanker brokers, AFRA, quoted on a Worldscale basis, assists large oil companies' internal accounting, provides a freight element for some netback deals, and serves other
    AFRA - (Average Freight Rate Assessment) designed for carrying For bulk crude oil in tanks (80,000 dwt - 120,000 dwt) 
  • Aframax Tanker 
    A vessel of 70,000 to 119,000 DWT capacity. The largest tanker size in the AFRA (average freight rate assessment) tanker rate system. 
  • AFSPS 
    Arrival First Sea Pilot Station 
  • AFT 
    The foremost part of the ship 
  • After Perpendicular 
    Ship Stability: Usually established at the intersection of the design waterline and the vessels rudder stock or stern post 
  • AFTRN 
  • AG 
    Arabian Gulf - also called PG - Persian Gulf 
  • Agency Tariff 
    A tariff published by an agent on behalf of several carriers. 
  • Agent or Ship's Agent 
    Person looking after the interests of a ship whiøe in port. Duties include organising pilotage, towage and berth for the ship, collecting freight and signing bills of lading 
  • Aggregate Shipment 
    Numerous shipments from different shippers to one consignee that are consolidated and treated as a single consignment. 
  • Aggregates Carrier 
    A single deck cargo vessel for the carriage of aggregates in bulk. Also known as a Sand Carrier. May be self discharging 
  • Agreed valuation 
    The value of a shipment agreed upon in order to secure a specific freight rate. 
  • Agreed Weight 
    The weight prescribed by agreement between carrier and shipper for goods shipped in certain packages or in a certain number. 
    Agricultural products 
  • Agrochemical 
    A chemical, such as a hormone, fungicide, or insecticide, that improves or protects the production of crops. 
  • Aground 
    Touching or fast to the bottom 
  • Agt. 
    Agent: A person authorized to transact business for and in the name of another person or company. Types of agents are: (1) brokers (2) commission merchants (3) resident buyers (4) sales agents (5) manufacturer’s representatives 
  • AGW 
    All going well 
  • AGW WP 
    All going well weather permitting 
  • AH 
    Range of ports between and including Antwerp and Hamburg 
  • AH 
    Aft hatch 
  • AH 
    Anchor Handling 
  • AHL 
    Australian hold ladders 
  • AHS 
    Annual Hull Survey 
  • AHT 
    Anchor Handling Tug 
  • AHTS 
    Anchor Handling Towage and Supply-vessels which supply oil rigs, tow them to location and anchor them up. They can also be used for supply roles. 
  • AID 
    Agency for International Development 
  • Aids to Navigation 
    Artificial objects to supplement natural landmarks indicating safe and unsafe waters  
  • AIMS 
    American Institute of Merchant Shipping 
  • Air Cushion Vehicle Crew Boat 
    An air cushioned vehicle or hovercraft specifically designed as a crew boat 
  • Air Cushion Vehicle Passenger 
    An air cushion vehicle or hovercraft used for the purpose of transporting passengers 
  • Air Cushion Vehicle Passenger/Ro-Ro Ship (Vehicles) 
    An air cushion vehicle or hovercraft used for the purpose of transporting passengers and ro-ro vehicles 
  • Air Cushion Vehicle Patrol Vessel 
    An air cushion vehicle or hovercraft used as a patrol vessel (perhaps change to work vessel) 
  • Air Cushion Vehicle Research 
    An air cushioned vehicle or hovercraft specifically designed as a research vessel 
  • Air Cushion Vehicle, work vessel 
    An air cushioned vehicle or hovercraft specifically designed as a work vessel 
  • Air Draft 
    The distance between the surface of navigable water, such as a channel, and the lowest point on some obstruction above it, a bridge for instance. A ship cannot use a waterway if it needs more vertical clearance than available. This consideration prevents
  • Air Draft 
    Ship Stability: The vertical distance from the vessel's actual waterline upward to a point on the vessel. 
  • Air Waybill 
    The forwarding agreement or carrying agreement between shipper and air carrier and is issued only in nonnegotiable form. 
  • Aircraft Carrier 
    A combat vessel designed to enable the carriage, take off and landing of aircraft 
  • AIS 
    Automatic Identification System - Real-time ship identification. All ships of 300 gross tonnage and upwards engaged on international voyages and cargo ships of 500 gross tonnage and upwards not engaged on international voyages and passenger ships irrespe 
  • AK 
  • AL 
    Action Level. Certain OSHA regulations take effect if this exposure level is reached. These regulations include workplace air analysis, employee training, medical monitoring, and record keeping. This level is about half of the permissible exposure limit. 
  • Alcohol resistant foam 
    A foam that is resistant to "polar" chemicals such as ketones and esters which may break down other types of foam. 
  • Alcohol Tanker 
    A tanker for the bulk carriage of alcohol 
  • Alcohols 
    Alcohols are amongst the most common organic compounds. Well-known alcohols include methanol (methyl alcohol, or wood alcohol), ethanol (ethyl alcohol, or grain alcohol) and isopropyl alcohol (the common alcohol known as rubbing alcohol and used as a germ
  • Aldehyde 
    An important starting material and intermediate in organic synthesis. Many aldehydes of industrial significance are used as solvents, perfumes, and flavoring agents or as intermediates in the manufacture of plastics, dyes, and pharmaceuticals. 
  • Aliphatic 
    Any organic compound in which the main structure is a chain of carbon atoms joined to each other is classified as being aliphatic. 
  • Alkali 
    A substance having a pH between 7 and 14 
  • Alkali Refining 
    The traded quality of oils and fats is determined primarily by the level of free fatty acids present. In crude oils, this may be as low as 0.5% as in soya, or as high as 6.0% as in the case of palm oil. Removal of this impurity is the major source of calc
  • Alkryd Resin 
    The reaction product of polyols, diacids, acids and anhydrides used primarily in the surface coating industry in which fatty acids, oils and glycerine are used to impart properties, e.g. chemical resistance, hardness, drying speed and flexibility. 
  • Alkyl benzene 
    One of the most important organic raw material for the production of synthetic detergents. 
  • Alkylate 
    A high-quality motor gasoline component made by combining isobutene and propylene or butylene. Butylene alkylate has a particularly high motor octane rating which suits it well for blending lead-free grades of automobile fuel and aviation gasoline. Both b
  • Alkylation 
    Olefins such as propylene and butylene are produced by catalytic and thermal cracking. Alkylation refers to the process using sulfuric or hydro-fluoric acid as a catalyst to combine these olefins with isobutane to produce a high octane product known as al
  • Alkylation unit 
    A piece of refining equipment that combines isobutane and an olefinic stream, usually butylene-rich, to make motor alkylate. 
  • Alkylphenol 
    Alkylphenol is produced using phenol as a starting material. It is mainly used as a stabilizer for rubbers and plastics, as a surfactant, as an industrial detergent, and in the mining and textile industries. 
  • All at Sea 
    This dates to the time when accurate navigational aids weren’t available. Any ship that was out of sight of land was in an uncertain position and in danger of becoming lost.. 
  • All In 
    The total price to move cargo from origin to destination, inclusive of all charges. 
  • ALLI 
    Annual Load Line Inspection 
  • Allision 
    When a moving vessel strikes a fixed object. 
  • Aloft 
    Above the deck of the ship 
  • Alongside 
    A phrase referring to the side of a ship. Goods delivered “alongside” are to be placed on the dock or barge within reach of the transport ship’s tackle so that they can be loaded. 
  • Aloof 
    Now means to stand apart or be indifferent, but it came from the Old Dutch word loef which meant “windward” and was used to describe a ship within a fleet which sailed higher to the wind and was thus drawn apart from the rest of the fleet. 
  • ALT 
    Altered or Altitude 
  • Alternative Rates 
    Privilege to use the rate producing the lowest charge. 
  • ALU 
  • Always Accessible 
    ALWAYS ACCESSIBLE shall mean that the charterer undertakes that an available loading or discharging Berth be provided to the Vessel on arrival at the Port which the Vessel can reach safely without delay. The charterer additionally undertakes that the Vess
  • Always Afloat Or Always Safely Afloat 
    A charter party clause which requires that a ship is to berth for loading or discharging without touching the bottom of the sea / river / lake, etc. 
  • Ambient Temperature 
    The temperature of a surrounding body. The ambient temperature of a container is the atmospheric temperature to which it is exposed, 
  • AMD 
    Average Most Probable Discharge 
  • America's Inland Waterways System 
    America's 12,000 mile navigable inland waterways system is the envy of the world because it allows the safe, economical, and environmentally friendly transportation of commodities that are essential to the nation's economic well-being. For example, barges
  • American Bureau of Shipping 
    U.S. classification society which certifies seagoing vessels for compliance to standardized rules regarding construction and maintenance. 
  • AMI 
    American Methanol Institute 
  • Amidships 
    In or toward the centre of the ship 
  • Amine 
    A chemical grouping based on a nitrogen atom linked to an aliphatic or aromatic structure 
  • Amines 
    Amines are produced from fatty acids for use as surface-active compounds. The primary and secondary amines can be converted to tertiary amines, quats and amine oxides, all of which have valuable surface-active properties. Based on their cationic nature an
  • Amino Acids 
    Chief components of proteins which are the building blocks of living tissues. Eighteen different amino acids commonly occur in our food supply and eight are considered essential because the body cannot make them from other materials. 
  • AMS 
    Annual Machinery Survey 
    Americanised welsh coal charter party 
  • Anchor Handling Tug Supply 
    An offshore tug/supply ship equipped with a high bollard pull and a stern roller for anchor handling 
  • Anchor handling Vessel 
    A vessel equipped to assist with the handling of anchors in coastal waters 
  • Anchor Piling 
    Mooring point on the sea bed 
  • Anchorage 
    An area inside a water body providing the ships some protection from the weather while lying at anchor to stand by, load or unload cargo, await repairs, etc. They are protected areas where shippers lay down their anchors and wait to exit the harbor. 
  • Anhydride 
    Any chemical compound obtained, either in practice or in principle, by the elimination of water from another compound.  
  • Anhydrous-Free of Water 
    Anhydrous means dry or free from water. Oils are essentially anhydrous after refining and deodorisation, the usual specified maximum moisture level being 0.1%. Butter, made from dairy cream, consists of an emulsion with up to 16% of water. Margarine is fo
  • Aniline 
    An organic base used to make dyes, drugs, explosives, plastics, and photographic and rubber chemicals. Aniline owes its name to the indigo-yielding plant, Indigofera anil, from the distillation of which aniline was first obtained. 
  • Aniline point 
    A specification, quoted in degree Fahrenheit in the USA and Centigrade elsewhere, which reports the aromatics content of a hydrocarbon mixture. This quality consideration indicates the susceptibility of a vacuum gasoil to catalytic cracking because paraff
  • Anisidine Value 
    The anisidine value is a measure of the amount of aldehydes, principally 2-alkenals, present in oils. This gives a qualitative assessment of the amount of secondary oxidation products present in the oil. The anisidine value is determined by reacting a tes
  • Anode 
    Electrode at which the anodic reaction predominates 
  • Anodic protection 
    Electrochemical protection achieved by increasing the corrosion potential to a value within the potential range of the passive state 
  • ANSI 
    American National Standards Institute 
    Antwerp - Hamburg range 
  • Anthracene 
    Anthracene is a solid polycyclic aromatic hydrocarbon consisting of three benzene rings derived from coal tar. Anthracene is used in the artificial production of the red dye alizarin. It is also found in some coal tar oils which are used for example as wo
  • Anti–Dumping Duty 
    A tariff imposed to discourage sale of foreign goods, subsidized to sell at low prices detrimental to local manufacturers. 
  • Antifoam 
    Foam is a two phase system consisting of liquid and gas wherein gas is distributed in the form of small bubbles throughout the liquid. Formation of foam is quite common in some oils and fats during prolonged heating/frying. To overcome or minimise foaming
  • Antifouling 
    Normally contains toxic compounds to prevent marine growth. Non-toxic products are gradually being introduced to the market 
  • Antiknock index 
    The average of a motor gasoline's or blending component's RON and MON (RON + MON)2, sometimes written (R + M)2. 
  • Antioxidants 
    Substances which inhibit the oxidation of fats and oils. They are added to fats and oils or fatcontaining products to provide greater stability and longer shelf-life by delaying the onset of oxidative rancidity. 
  • AOB 
    As On Board 
  • AOCS 
    American Oil Chemists Society. One of the largest professional bodies for oils and fats technologists. It has a large international membership and publishes a comprehensive book of analytical methods and two journals - "Lipids" and "Journal of the America
  • AOG 
    Act of God 
  • AOH 
    After office hours 
  • AOR-E 
    Atlantic Ocean Region East 
  • AOR-W 
    Atlantic Ocean Region West 
  • AP 
    All purposes 
  • AP 
    Additional premium or Auto pilot 
  • AP 
    Aft perpendicular 
    After peak tank 
  • APA 
    Aromatics Producers Association, a sector group of the Association of Petrochemicals Producers in Europe (APPE). 
  • APBS 
    Accident prevention on board ships at sea and in port (second edition) International Labour Office, Geneva (ILO) 
  • APC 
    American Plastics Council 
  • APD&T 
    Alaska Petroleum Distributors and Transporters 
  • APF 
    Afloat Prepositioning Force 
  • APG 
    Arabian Persian Gulf 
  • API 
    American Petroleum Institute 
  • API Degrees (API) 
    The units of API's density scale. 
  • API Gravity 
    A density scale expressed in API degrees. The following formula relates this representation of density to specific gravity: API = (141.5specific gravity @ 60`F)-131.5. AR: American rate. Tanker hire prices according to the American Tanker Rate Schedule. T
  • APLA 
    Latin American Petrochemical Association 
  • Apparent draft 
    Ship Stability: The drafts obtained form reading the draft at the draft marks. 
  • Apparent Good Order 
    When freight appears to be free of damage so far as a general survey can determine. 
  • APPE 
    Association of Petrochemicals Producers in Europe 
  • Appraisement 
    Determination of the dutiable value of imported merchandise by a Customs official who follows procedures outlined in their country’s tariff, such as the U.S. Tariff Act of 1930. 
  • Appraiser’s Stores 
    The warehouse or public stores to which samples of imported goods are taken to be inspected, analyzed, weighed, etc. by examiners or appraisers. 
  • APPRX 
  • APS 
    Arrival Pilot Station or At Pilot Station 
  • APTF 
    Asia Pacific Terminal Forum 
  • AQ 
    Any Quantity: Usually refers to a rating that applies to an article regardless of size or quantity. 
  • Aquabreak PX 
    Product name for an environmentally-adapted cleaning agent which can be used throughout the ship 
  • aquatuff 
    Product name for an environmentally-adapted cleaning agent used in cargo holds 
  • AR 
    Accounts receivable 
  • AR 
    Auxiliary engine room (OCIMF acronym) 
  • ARA 
    Antwerp - Rotterdam - Amsterdam range 
  • ARAG 
    Amsterdam - Rotterdam - Antwerp - Gent range 
  • ARAGH 
    Antwerp - Rotterdam - Amsterdam - Ghent range 
  • ARAZ 
    Antwerp - Rotterdam - Amsterdam - Zeebrugge range 
  • ARB 
  • Arbitrary 
    A stated amount over a fixed rate to one point to make a rate to another point. 
  • Arbitration 
    Method of settling disputes which is usually binding on parties concerned. A clause usually in a charter party 
  • Area of water plane 
    Ship Stability: Area of WP= 420*TPI 
  • ARH 
    Antwerp - Rotterdam - Hamburg range 
  • ARHB 
    Antwerp - Rotterdam - Hamburg - Bremen range 
  • ARND 
  • Aromatic 
    Aromatics are a highly reactive group of hydrocarbons with unsaturated rings of carbon atoms, producing a great variety of products. As their name implies, they have a strong odor, which is not unpleasant. 
  • Aromatics 
    A family of hydrocarbons characterized by a single or multiple ring structure containing unsaturated carbon-carbon bonds. Common aromatics which boil in the gasoline range (benzene, toluene, and xylenes, in particular) have a very high octane rating. Refo
  • ARPA 
    Automatic Radar Plotting Aid 
  • Arrival Notice 
    A notification by carrier of ship’s arrival to the consignee, the “Notify Party,” and – when applicable – the “Also Notify Party.” These parties in interest are listed in blocks 3, 4 and 10, respectively, of the Bill of Lading. 
  • ARTD 
    After right and true delivery 
  • Articulated Tug Barge (ATB) 
    The articulated tug barge is a new state-of-the-art design aimed to increase efficiency and safety in ocean towing by eliminating the long towline. Instead, the tugboat fits into a notch designed into the stern of the barge and the two units are tightly c
  • AS 
    Annual Survey 
  • As the Crow Flies 
    When lost or unsure of their position in coastal waters, ships would release a caged crow. The crow would fly straight towards the nearest land thus giving the vessel some sort of a navigational fix. The tallest lookout platform on a ship came to be know
  • ASA 
    Always safely afloat 
  • ASAP 
    As soon as possible 
  • ASBA 
    Association of Shipbrokers and Agents 
  • ASC X12 
    American Standards Committee X12 responsible for developing EDI standards for the United States. 
  • ASEAN 
    Association of south-east Asian Nations 
  • ASF 
    Asian Shipowners'' Forum 
  • ASG  
    Acetyls Sector Group. A sector group of the Association of Petrochemicals Producers in Europe (APPE). For more information, click here. 
  • Ash 
    Carbonaceous residue produced by burning crude oil and petroleum products. The industry tests fuels and other hydrocarbon mixtures in order to determine how much of this combustion by-product will form in ordinary use of its products. Refiners and others
  • Asphalt 
    A mixture of heavy carbon-based compounds containing a high percentage of multiple-ring aromatics, many of them involving sulfur, nitrogen, and oxygen atoms. Some folks use the word, asphalt, interchangeably with bitumen, the name of its characteristic co
  • Asphalt cement 
    A derivative, nearly or completely solid at room temperature, of certain crude oils. This black, tarry material usually comes from vacuum residue. It has several industrial applications. Pavers heat it to liquid form and mix in gravel to make road surface
  • Asphalt/Bitumen Tanker 
    A tanker for the bulk carriage of asphalt/bitumen at temperatures between 150 and 200 deg C 
  • Asphaltenes 
    Complex molecules which reveal their ring-structures by dissolving in aromatic liquids but not in paraffins. These compounds may influence the burning and blending characteristics of residual oils, if present in sufficient concentrations. They contribute
  • ASPW 
    Any Safe Port in the World 
  • Assay 
    An elaborate laboratory report describing in detail the quality of grades of crude oil. The data presented includes, among other items, density, sulfur, naphthenicity, pour point, viscosity, distillation, and information on the quality of individual fract
  • Assignment 
    A term commonly used in connection with a bill of lading. It involves the transfer of rights, title and interest in order to assign goods by endorsing the bill of lading. 
  • Associated gases 
    Associated gas is an emulsion produced from saturated crude oil. 
  • Astern 
    – Behind a vessel – Move in a reverse direction. 
  • ASTM 
    American Society for Testing and Materials. An organization which determines and publishes consensus standards of suitability and quality for a wide variety of materials including petroleum and refined products. ASTM develops and endorses methods of testi
  • At Loggerheads 
    An iron ball attached to a long handle was a loggerhead. When heated it was used to seal the pitch in deck seams. It was sometimes a handy weapon for quarrelling crewmen. 
  • ATA 
    Actual Time of arrival 
  • ATC 
    Actual time counting 
  • ATD 
    Actual time of departure 
  • ATDN 
    Any Time Day or Night 
    Any Time Day or Night Sundays and Holidays Included 
  • ATDON 
    At day or night 
  • Athwartships 
    A direction across the width of a vessel. 
  • ATL 
    Atlantic Ocean 
  • Atmos 
    Abbreviation of atmospheric-pressure distillation, as in atmos bottoms and atmos gasoil. 
  • Atmospheric corrosion 
    Corrosion with the earth's atmosphere at ambient temperature as the corrosive environment 
  • Atmospheric corrosion test 
    Field trials in the atmosphere 
  • Atmospheric distillation 
    A technique for separating hydrocarbon mixtures which uses distillation apparatus operated at atmospheric pressure. Generally, the industry specifies ambient pressure to distinguish products of crude distillers, atmospheric fractions, from the products of
  • Atmospheric gasoil 
    The heaviest product boiled by a crude distillation unit operating at atmospheric pressure. This fraction ordinarily sells as distillate fuel oil, either in pure form or blended with cracked stocks. In blends atmospheric gasoil, often abbreviated AGO, usu
  • Atmospheric residue 
    The portion of crude oil taken as a bottoms product in a crude distillation unit which operates at atmospheric pressure under several other names apply to this product including atmos (atmospheric) reside, atmos bottoms, atmospheric fuel oil long reside,
  • ATN 
    Aids to Navigation 
  • Atom 
    The smallest unit into which matter can be divided without the release of electrically charged particles, and also the smallest unit of matter that cannot be decomposed into simpler substances by ordinary chemical processes. Hence the atom is the basic bu
  • ATRS 
    American Tank Rate Schedule 
  • ATS 
    Actual Time Saved or All time saved 
  • ATSB or ATSBE 
    All time saved both ends 
  • ATSDO 
    All time saved discharging only 
  • Attack Vessel, Naval 
    A combat vessel which is designed for high speed with a limited weaponry for rapid attack manoeuvres 
  • ATUTC 
    Actual Times Used to Count 
  • Auditing 
    The process carried out to assess the operating standards of a company or a business and the degree of compliance. 
  • Auto Oil programme 
    A technical work programme launched in 1992 by the European Commission and in which the European automobile and oil industries participated. The aim of this programme was to assess the most cost-effective measures for reducing emissions from the road tran
  • Automated Identification System (AIS) 
    It is a system used by ships and Vessel Traffic Service (VTS) principally for the identification and the locating of vessels. AIS provides a means for ships to electronically exchange ship data including: identification, position, course, and speed, with
  • AUX 
  • AV 
    Ad valorem 
  • Availability 
    A quantity of crude or product a supplier could sell 
  • AVCAT 
    Aviation Category 
  • Average 
    See Insurance. 
  • AVGAS 
    Aviation Gasoline 
  • Aviation gasoline 
    High-grade motor fuel blended to meet the requirements of piston-type aero plane engines. This specialty product differs in all critical respects from aviation turbine fuel (jet). 
  • Aviation turbine fuel (ATF) 
    The fuel burned by aero planes jet engines. Civilian aircrafts consumes a kerosene-range product variously known as jet kero, jet A-1, avtur, DERD-2494, and JP1. Warplanes needed special fuels. Two military grades, JP-4 and JP-5 fall within the common not
  • Avoirdupois Pound 
    Same as 0.4535924277 kilograms. 
  • AWB 
    Air waybill : Shipping document specifying terms for the courier and instructions for the airline. 
  • AWES 
    Association of Western European Shipbuilders 
  • AWH 
    Available workable hatches 
  • AWIWL 
    Always Within Institute Warranty Limits 
  • AWRI 
    Additional War Risk Insurance 
    All working time saved both ends 
    All working time saved discharging only 
    All working time saved loading only 
  • AWWL 
    Always within Institute Warranties Limits (Insurance purpose).