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Shipping Terms

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A (Alpha)

Diver below (when stationary); I am undergoing a speed trial
A.S. (A.s.) Alongside
AA Always afloat
AAAA Always Afloat, Always Accessible
AALA American Association for Laboratory Accrediation
AASO Assosiation of American Ship Owners
AB Able seamen
AB (ABS) American Bureau of Shipping - American (US) Ship Classification Society. Under the provisions of the US Load-Line Act - it has the authority to assign load lines to vessels registered in the US and other countries.
Abandoned Well An oil well where production has ceased.
ABS American Bureau of Shipping- American classification society.
Accommodation Unit/Floatel Normally a semisubmersible or jackup (See Jackup), equipped with cabins, catering facilities and office space for up to 800 persons. The installation is normally used for the accommodation and catering for personnel constructing or operating a fixed production platform. An accommodation unit may also be equipped with workshops and/or storage facilities.
ACFN American Committee for Flags of Necessity
ACGFO Any Commercial Grade of Fuel Oil
Acid Gas Gas with pollutants causing a low pH-value. Creates corrosion problems.
Acidizing Te injection of hydrochloric acid into the production zone in order to stimulate greater yield. The acid corrodes the sedimentary partitions, thereby increasing permeability.
ACOT Advisory Committee on Offshore Technology
ACP Area Contingency Plan
ACS American Chemicals Society
AD Air Draft - correctly used, air draft refers to the distance from the vessel's waterline to the top of the highest mast in an unladen condition. Important to determine whether the vessel can pass under fixed bridges. (Airdraft is also used to refer to the distance from the vessel's light waterline to the top of the hatch coming. This dimension must be known to determine whether the vessel will fit under the fixed shore loading or discharging appliance.)
ADB African/Asian Development Bank
ADEC Alaska Departement of Environmental Conservation
ADR Alternative Dispute Resolution - a relatively new innovation whose use has increased in the last decade in response to a general rise in litigation in many jurisdictions and the thereby escalating cost associated therewith, as well as the increased dissatisfaction with the legal process itself. The ADR is a tool designed as a supplement to a given judicial system to provide parties of otherwise good and long term working relationship with a cheaper and in most cases less adversial alternative to lengthy court hearings and arbitrations.
Aerated Mud Drilling mud mixed with oxygen to increase efficiency.
AFRA Average Freight Rate Assessment - average costs for the freight of oil with tankships. Calculated by the Worldscale Association in London. based on an ongoing registration of all freightrates at particular points in time.
Aframax American Freight Rate Association - approximately 80,000 - 105,000 dwt - term for a tank ship of standard size.
AFRASEC Afro-Asian Organization for Economic Cooperation
AFTA
Asean Free Trade Area (See ASEAN).
AG Arabian Gulf - also called PG - Persian Gulf.
Agent / 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
AGS Annual General Survey
AH Antwerp Hambug range
AHT Anchorhandling Tug - vessel employed in the offshore field moving anchors and performing towing operations.
AHTS AHT which is also a combined supplyvessel.
AID Agency for International Development - US organization for civilian aid programmes.
AIMS American Institute of Merchant Shipping - the American shipowners' association for the major part of the privately owned tonnage.
AIS
Automatic Identification System
ALADI
Latin-American Integration Association (11 members).
ALAMAP Associacón Latinamericano de Armadores - Latin-American Shipowners' Association (established in March 1963).
ALU-TUCP Philippine Seafarers' Union, member of TUCP (Trade Union Council of the Philippines).
AMA Association of Maritime Arbitrators, New York
AMOSUP Associated Marine Officers' and Seamen's Union of the Philippines - Filipino union for officers and crew.
AMPD Average Most Probable Discharge
AMR Amercoat
AMS Automated Manifest System (For US Departement of Agriculture Entry Processing Procedures for US ports)
AMVER Automatic Mutual-Assistance Vessel Rescue System - American warning system for international shipping.
ANDES’ Pact
Customs and tariffs union between Venezuela, Colombia, Ecuador, Peru and Bolivia with common external customs’ tariffs.
Anchor Piling Mooring point on the sea bed.
Anchorhandling
Tug
AHT - ship carrying out tasks such as the placing or moving of anchors, as well as towing drilling installations and barges etc. May double as a supply vessel and is in such cases termed Anchorhandling Tug/Supply (AHTS).
Annular Blowout Preventer Safety valve during drilling operations. Consists of rubber gasket stopping the flow of mud outside the drill string.
Annulus The distance between the drill string and the casing or the wall of the drilling hole.
ANPRM Advance Notice of Proposed Rulemaking (U.S.)
ANS Alaskan North Slope (crude oil)
ANSI American National Standard Institute
AODC
Association of Offshore Diving Contractors
AOSC Assistant On-Scene Coordinator (U.S. Coast Guard)
AP All Purposes or Additional Premium
APEC
Asia-Pacific Economic Cooperation (18 members).
API American Petroleum Institute - Founded in 1919, the first oil trade association to include all branches of the petroleum industry
API GRAVITY Petroleum industry expression for density of petroleum liquid expressed in API units. - API gravity is obtained by means of simultaneous hydrometer/temperature readings, equated to, and generally expressed at 60ºF. The relative density to API gravity relation is: API gravity at 60ºF = 141.5 divided by relative density 60ºF minus 131.5.
APICOM Association of Petroleum Industry Cooperative Managers
APS Arrival Pilot Station - Signifies a location, on arrival at which vessel will deliver on to a time-charter. Of advantage to a ship owner when compared with TIP, which see.
APT After Peak Tank
AR / ATRS American Tanker Rate Schedule-Revised - A Standards of reference published by a group of American tanker brokers and expressed in dollars and cents for thousands of possible voyages. Commonly used for U.S. coast wise voyages.
ARA Antwerpen-Rotterdam-Amsterdam, often used as destination specification.
Arbitration A method of settling disputes by one or more arbitrators. Quicker and cheaper than taking a case to court.
ARPA Automatic Radar Plotting Aid
ART Alternative Response Technology
Articulated Platform/ Oscillating Platform
An offshore structure fastened to the sea bed by means of an articulated hinge, stabilized by buoyancy elements near the surface. Usually used in connection with loading buoys and flare towers.
ASBA Association of Ship Brokers and Agents (U.S.A., Inc.), New York
ASEAN Association of South East Asian Nations - Indonesia, Malaysia, the Philippines, Singapore.
ASEM
Summit Meeting between Asian and European nations.
ASF Asian Shipowners' Forum - shipowners' association for East Asia and Oceania.
ASME American Society of Mechanical Engineers
ASO Arbeidsgiverforeningen for Skip og Offshorefartoyer - The Employers' Organization for Ships and Offshore Installations (Oslo).
AST Atlantic Strike Team (U.S. Coast Guard)
ASTF Alaska Science and Technology Foundation
ASTM American Society for Testing and Materials
ATDN Any Time Day or Night
ATDNS/
ATDNSHINC
Any Time Day or Night Shinc
ATRS / AR See AR above
ATS All Time Saved
ATSB All Time Saved Both ends
AUTOMATIC SAMPLER A device installed in a flow, automatically controlled so as to extract a representative sample of the flow.
AUTOMATIC TANK GAUGE An instrument capable of indicating the level of product from a location remote to the Manual gauge site
AWES Association of Western European Shipbuilders
AWO American Waterways Operators

 

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B (Bravo)

I am taking on or discharging explosives (Dangerous Cargo)

B.S.&W.
Bottom Sediment and Water
B/D Barrels per Day
B/L Bills of Lading (Blading) - The basic document between a shipper and a carrier and a shipper and a consignee. It represents the contract of carriage and defines the terms and conditions of carriage. It is the final receipt from the carrier for the goods shown on it and for the condition of the goods. It describes the nature, quantity and weight of the cargo carried. It is also the document of title of the goods shown.
Dirty B/L - Bill of Lading with Captain's note of protest as to the condition of the cargo.
B/N Booking Note
BA Buenos Aires
BAC The Bioremediation Action Committee (EPA sub-committee)
BAF Bunkers Adjustment Factor
Ballast Sea water taken into a vessel's tanks in order to submerge the vessel to proper trim. Proper trim is necessary in order to safely navigate the vessel in light condition. Ballast can be taken into cargo tanks, double bottoms, fore and aft peak tanks and/or segregated ballast tanks (SBT)
BAP Best Available Protection
Bareboat The hiring or leasing of a vessel from one company to another (the charterer), which provides crew, bunkers, stores, etc. and pays all operating costs.
Bareboat Charter-Party (Demise C/P) Contract for the hire of an empty ship. All operating costs are covered by the charterer.
Barrel Measure for oil. There are 7.1 barrels of oil in one ton. Each barrel is approximately 159 litres. Many abbreviations: b, bbl, bar. Sometimes written with capital letters. Barrels per day (Bd or b/d) specifies the production rate per day.
BB Bahia Blanca ; Ballast Bonus - A lump sum amount paid to a ship owner, usually as a reward (a bonus) for positioning the vessel at a certain place as a prerequisite for her delivery on to time-charter - e.g.: for a ship ex-Mediterranean Sea, "delivering United States Gulf for a time-charter trip to the Far East at US$ 5,000 daily, plus a ballast bonus of US$ 100,000". Occasionally paid as a reward for accepting redelivery from time-charter in an unfavorable position. A Ballast Bonus may be nett (i.e. free of address commissions and brokerages) or gross (i.e.: subject to deduction of brokerage and address commission). ; Below Bridges: - indicates agreement for a vessel to proceed to that section of a port or a river/canal that is "below bridges" - in other words below the place(s) where height restrictions would prevent a vessel navigating beneath certain overhead obstructions. - e.g.: "Vessel to discharge at one safe berth River Thames, Below Bridges".
BBB Before Breaking Bulk - freight to be paid, i.e. the money deposited into the shipping company's account, prior to discharging.
BCH Code International code (IMO) for the construction and equipment of ships carrying dangerous chemicals in bulk
BCM Distance from Bow to Center of Cargo Manifolds
BD Bar draft ; Bundle
BDI Both Dates Inclusive
BEI Banque Europenne d'Investissement - The European Investment Bank.
Bell Diving Carrying out diving within a diving vessel, shaped like a bell.
Benchmarking
To compare someone or something with the best that can be achieved within a specified field.
BENDS Both Ends
Benelux Belgium, Netherland, Luxembourg
BFI Baltic Freight Index - an index for bulk freight rates.
BGCP Berth Grain Charter Party
BH Bordeaux Hamburg Range
BHP Brake Horse Power
BIAC Business and Industry Advisory Committee - OECD's advisory committee. Opposite to TUAC.
BICC Bureau International des Chambres de Commerce - International information bureau for Chambers of Commerce.
BIFA British International Freight Association
BIFFEX Baltic International Freight Futures Exchange (London) - an exchange for the buying and selling of futures, based on the BFI.
BIFFEX Baltic International Freight Futures Market
BILGE The lower internal part of the hull where the vertical sides meet the bottom. This term also applies to both the inside and the outside of the hull. The internal space can be the lower part of a ship's hold or the engine room and serves as a drainage area where accumulated water can run into and be pumped from.
Bill of Lading (B/L) Negotiable document issued by shipowner to shipper of goods. Contains terms and conditions of the contract.
BIMCO The Baltic and International Maritime Council (Copenhagen)
BIMCO The Baltic and International Maritime Council, Copenhagen
BIS Bank for International Settlements (Basel)
BISCO British Iron and Steel Corporation
Bit Drill bit.
BITT Cast steel heads serving as posts to which mooring lines and cables are secured on ships
BLF Bow Loading Facilities
Block Denotes an area awarded for test drilling or production. Block sizes may vary.
Blowout Uncontrolled blow out of oil or gas due to excessive pressure in the reservoir.
Blowout Preventer Also called "Christmas Tree", a safety valve placed on the well head.
BLT Built
BMIN Bureau of Marine Inspection and Navigation
BMLA British Maritime Law Association
BNA British North America
BO Best Offer
BOA Basic Ordering Agreement
BOP Abbreviation for Blowout Preventer.
BOSVA British Offshore Supply Ships Association
BOTB British Overseas Trade Board (London)
BOW The forward most part of a vessel. This area usually houses gear lockers and is the end where anchors and mooring equipment are located.
Box Everyday term for container.
Break-Bulk Cargo Goods shipped loose in the vessel's hold and not in container.
BRM Bridge Resource Management
BROA British Rigowners' Association
BS (B/S) Bunker surcharge
BSC British Shippers Council
BSI British Standards Institution
BT Berth Terms
BTCS Butterworth Tank Cleaning System

A mechanical device used for the purpose of cleaning oil tanks by means of high pressure jets of hot water. The apparatus basically consists of double opposed nozzles which rotate slowly bout their horizontal and vertical axis and project two streams of water through all possible angles against all inside surfaces of the space being cleaned. The tank washing machines can deliver sprays of water at various temperatures and pressures which are dictated by the type of cargoes carried and the reasons for cleaning (Quick bottom wash through gas-freeing and tank entry for hot work).
Bulk ship (bulk carrier) Single deck ship carrying homogenous unpackaged cargoes. Loaded through large hatchways.
Bulkcargo Homogeneous dry cargo (not packaged), e.g. coal, grain, iron ore, etc.
Bulk-oil carrier Multipurpose vessel built to carry cargoes of coal as well as oil. Most bulk-oil carriers are reinforced to carry ores and are called OBO-ship (ore/bulk/oil).
Bumber Sub
A tool, appr. 20 metres long, allowing a certain amount of vertical movement.
Bunkers Ship's fuel. To take on fuel, is called bunkering.
Bury Barge Vessel especially equipped to bury oil and gas pipelines on the sea bed.
BV Bureau Veritas - French classification society.

 

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C (Charlie)

Yes (affirmative)

C&E Customs and Excise - British Department for Tariffs and Customs.
C&F Cost and Freight - Goods are to be sold on the basis that the seller arranges their seaborne transportation and delivery to the buyer.
C.I.S. Confederation of Independent States (former Soviet Union - see also FSU)
C/O/H Cuba / Orinoco / Haiti
CA Central America
CAACE Comit des Associations d'Armateurs de la Communaut Europenne (Brussels) - organization for shipping companies from the EU.
CABA Containing Air Breathing Apparatus
CABAF Currency And Bunker Adjustment Factor
Cabotage Coastal trade, i.e. the movement of goods by ship between ports on the same coast or between ports within the same country.
CACM Central American Common Market
CAD Cash Against Documents
CAF Currency Adjustment Factor
CAJEA Council of All Japanese Exporters' Association
Camber The arching of the deck upward measured at the centerline in inches per foot beam.
CAP Condition Assessment Programme - inspection of a vessel to determine its technical condition.
Capesize Vessel which is too large to navigate the Suez Canal to and from the Arabian Gulf, therefore being forced to voyage around the Cape of Good Hope - approximately 80,000 - 175,000 dwt.
Caping Routing a vessel around the Cape of Good Hope, South Africa.
Capital intensive tonnage Vessel demanding relatively large capital investments, e.g. cruiseships, gas- and chemical tankers, etc.
CARIBS Caribbean Sea
CARICOM Caribbean Community.
CAS Collision Avoidance System - Electronic system commonly used to prevent collisions in USA inland navigable waterways.
Casing Pipe with thick walls placed in the drill hole and cemented in place. Prevents the hole from caving in.
CASO Council of American- flag Ship Operators (eight liner companies which left the AIMS).
Catwalk A raised bridge running fore and aft from the Midship House, also called "walkway". It affords safe passage over the pipe lines and other deck obstructions.
Cave-in The walls of the drill hole disintegrating and filling up the hole.
CBA Collective Bargaining Agreement (tariff agreement) - CBA for Filipino seamen between AMOSUP and ASO is an example. The term is used for any kind of tariff agreement, both for NIS-ships and foreign flagged ships.
CBFS Carbon Black Feed Stock
CBM Conventional Buoy Mooring
CBR Commodity Box Rate
CBT Clean Ballast Tanks
CCA Chemical Carriers Association
CCAF Comité des Armateurs de France - the French shipowners' association.
CCC Customs Co-operation Council - forum for international cooperation between customs authorities, attempting to create harmony and uniformity of approach.
CCGD8 Commander Coast Guard District Eight
CCR Cargo Control Room
CCS China Classification Society
CCW Clean Coastal Waters (Long Beach CA cooperative)
CD Customary Dispatch; Chart Datum - a water level calculated on the lowest tide that can conceivably occur, and used as a basis for chart measurements. Such low tide is known also as the Lowest Astronomic Tide (LAT), and presupposes that at the very worst, there would always be that depth of available water at that particular spot.
CDS Chemical Data Sheet
CE Conseil de l'Europe (Strasbourg)
CEC
Certificate of Equivalent Competency
CEFOR Maritime insurers central association.
Cellar Deck
The level beneath Rotary Table on a rig. On a jack-up this means the well-head and BOP. On a floating rig, it is the deck from which the guidelines are controlled. May also have a Marine Riser.
CEMT Conference Europeenne des Ministres des Transports - OECD-affiliated organization for dealing with transportation problems on rails, roads and inland waterways.
CEN European Standardization Organization
CENELEC
European Committee for Electrotechnical Standardisation
CENSA Council of European and Japanese National Shipowners' Associations (London).
CENSA Council of European and Japanese (Nipponese) National Shipowners' Association
CERCLA Comprehensive Environmental Response, Compensation and Liability Act (U.S.)
CES Customs Exam Station(U.S. Customs designation for office granting import licence on USDA approved cargoes)
CFR Code of Federal Regulations (U.S.)
CFS Container Freight Station ; Cubic Feet per Second
CFT (CuFt) Cubic Feet
CGT Colliery Guarantee Terms - the ship is to be loaded in accordance with the terms of the colliery (coal mine) guarantee, which is a contract between the colliery and the charterers - occasionally between the colliery and the ship owner - describing applicable laytime, excepted periods, holiday and demurrage
Charterer Cargo owner or another person/company who hires a ship.
Chartering To hire a ship to carry goods/cargo.
Chartering agent Shipbroker acting on behalf of charterer in negotiations leading to the chartering of a ship.
Charter-Party (C/P) Contract for the hire of a ship or space in a ship ; Transport contract between shipowner and shipper of goods.
Chemical tanker Special tanker built for the transportation of bulk chemicals. Newer tonnage is equipped with stainless steel tanks. Ships may carry many different cargoes simultaneously, because each tank has its own pump and pipeline system for loading and unloading.
CHOPT Charterer's Option - May refer, for example, to Charterer's option to discharge at a number of ports - e.g.: "up to three ports Taiwan, in Charterer's Option". Or perhaps relative to a cargo size margin - e.g.: "10,000 tonnes, 5 per cent more or less chopt". (See MOLCO).
CIC Clean Island Council (Hawaiian cooperative)
CIF Cost, Insurance, Freight. Designates that the cargo is carried free of charge for the buyer; seller pays all transportation costs.
CIFC Cost, Insurance, Freight and Commission
CIFFO Cost, Insurance and Freight, Free Out
CIMA Channel Industries Mutual Aid Association
CIP Calling-In-Point
CIRCAC Cook Inlet Regional Citizen's Advisory Council
CIS Commonwealth of Independant States
CISPRI Cook Inlet Spill Prevention, Inc. (Alaskan cooperative)
Civil Liability Convention CLC - see Oil spill compensation.
CKD Completely Knocked Down - Said of cargo, normally of cars, shipped in pieces and cased, to be assembled at destination.
Classification society Organization which carries out surveys of newbuildings and at regular intervals when in commission, sets and maintains quality standards for ships and their equipment. Acts on behalf of the flag state's maritime authorities.
CLC Civil Liability Convention of 1969.
CLINGAGE The residue that adheres to the inner surface and structure of a container, such as a tank after having been emptied
CLS Closed Loading System
CMI Comite Maritime International - the international association for maritime law.
COA Contract of Affreightment - quantity contract: An agreement between shipowner and shipper concerning the freight of a defined amount of cargo. The shipowner chooses ship.
Coating Paint (corrosion protection)
COE Corps Of Engineers
COFFERDAM The narrow, empty space between two adjacent watertight or oil-tight compartments. This space is designed to isolate the two compartments from each other and/or provide additional buoyancy. It prevents any liquid contents of one compartment from entering the other in the event of a bulkhead failure. In oil tankers, cargo spaces are usually isolated from the rest of the ship by cofferdams fitted at both ends of the tank body.
COFR Certificate of Financial Responsibility - regarding the transport of oil to USA. Vessels must have a certificate guaranteeing the payment of up to USD 1,500 per dwt. in case of oil spills.
COFR Certificate Of Financial Responsibility
COGSA Carriage of Goods by Sea Act (USA).
Collar A thick piece of pipe closest to the bit.
Combination carrier Ships for the transportation of both liquid and dry bulkcargoes. There are two main types: Ore carriers and bulk-tank-ships.
Commission Shipbroker's remuneration, normally 1.25 per cent of gross freight. Calculated also for sales and purchases of vessels at one per cent of purchase price.
Commission Shipbroker's fee - often 1,25% of the gross freight rate. In the case of a purchase/sale, often 1% of the purchase sum.
Completion Making the hole ready for production.
Conductor Pipe Casing with large diametre - normally the first first lining or guide pipe fitted during the drilling operation.
Container vessel Ship specially designed to carry standard containers (TEUs). Generally called Cellular container ship. The larger part of the cargo-carrying capacity consists of containers carried on deck or in cells in the hold. Containers are lifted on and off with special cranes and are then called lift on-lift off-ships (see special entry). Container ships are generally fast, operating regular sailing schedules (lines).
Contract of Affreightment, c.o.a. Contract for the hire of a ship. The shipowner undertakes the transport of certain amounts of goods for one or several voyages.
COP Custom Of The Port - cargo to be loaded or discharged as per custom of the port. Thus no specific rate of cargo handling would be entered in the contract, the owner relying on the vagaries of local practices and customs. Presumably he will ask for a higher freight rate to protect him against possible delays.
COR Certificate Of Registry
COTCTFC Charterer's Option To Complete To Full Cargo
COTP Captain Of The Port (U.S. Coast Guard)
COTTON CLUB informal forum for Western European and Japanese shipping attachées in Washington. COTTON CLUB - informal forum for Western European and Japanese shipping attachées in Washington.
COW Crude Oil Washing - a method of cleaning tanks using oil from the vessel's cargo. COW is normally used when a tanker is discharging. Oil is taken from the tanks and pumped through a special line to fixed or semi-fixed tank washing machines where it is sprayed against all inside surfaces of the tank. This procedure removes any cargo which is "clinging" to the surfaces of the tank.
CPP Clean Petroleum Products
CQD Customary Quick Dispatch - the vessel is to be loaded or discharged as quickly as is customary and possible - se CD
CR China Corporation Register (Taiwan) - Taiwanese Skip Classification Agency.
Crane and Construction Vessel/Unit Normally a ship, a barge or a semisubmersible, equipped for the construction and maintenance of fixed installations. May sometimes offer accommodation. Other services offered are: Storage facilities, the supply of water, compressed air and electricity, office space, communications center, helicopter landing pad, etc.
CRC Clean River Cooperative (Portland OR - Columbia River)
CRD Current Rate Discharge (see Current Rate)
CRISTAL Contract Regarding a Supplement to Tanker Liability for Oil Pollution - a voluntary system established by oil companies in order to "plug" holes in IMO-conventions concerning the financial settlement of claims in connection with oil spills. The oil companies' supplemet to TOVALOP.
CRISTAL Contract Regarding an Interim Supplement to Tanker Liability for Oil Pollution
CRL Current Rate Load (see Current Rate)
Cross Trade The freight of cargoes between foreign ports. Nearly 95 per cent of the Norwegian-owned tonnage is cross-trading.
CRS Croatian Register of Shipping (Hravatski Registar Brodova) - Croatian Ship Classification Society
Crude (oil) Unrefined oil directly from the well.
Cruise ship Passenger vessel carrying passengers on trips between various ports, normally with the same starting and ending port. Standards of accommodation and recreation normally high.
CSC Container Safety Convention - convention for the promotion of safer containers.
CSD Closed Shelter Deck Ship
CSG Consultative Shipping Group - forum for the discussion of shipping policy on Government level. Fourteen West-European participants and Japan.
CSM Closed System Measurement
CST Centistrokes - Measure of the viscosity of oils such as fuel oils. The greater the number of centistrokes, the higher the viscosity of a grade of oil.
CSWR Chamber of Shipping War Risks, CP clauses.
CTAC Chemical Transportation Advisory Committee
CTL Constructive Total Loss - loss or damage to goods or to a ship which is such that the cost of repair or recovery would exceed their value when repaired or recovered.
Cubic Capacity The most important commercial measurement when the cargo is so lightweight that the ship is filled to capacity without being loaded to the load line (free board). Capacity is measured in cubic meters or cubic feet (cu.ft.).
Current Rate A Term whereby the ship owner contracts to pay the current rate costs of loading and/or discharge.
CVS Consecutive Voyages - a series of consecutive voyages, usually laden from Port A to Port B, returning in ballast condition, and so on until completion of final cargo discharge.
CWD Colliery Working Days - a laytime term describing normal working days of a colliery (coal mine), including those in a strike or other actions.
CY Container Yard

 

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D (Delta)

Keep clear of me, I am maneuvering with difficulty

DBB Deals, Battens and Boards. Unit of measure of timber.
DBT Double Bottom Tanks
Dead Freight Money payable by shipper or charterer to shipowner or shipping line for failing to load the amount of cargo stipulated in contract.
Deadweight The largest weight of cargo, bunkers and stores a ship is able to carry. Expressed in metric tons (1,000 kg) or long tons (1,016 kg). The deadweight tonnage is the most important commercial measurement. Normally the maximum payload for a ship is three to ten per cent lower than the deadweight, due to the weight of bunkers and stores, etc.
Decompression Slow, controlled reduction of pressure inside a pressure chamber to prevent divers from suffering the "bends" after a too fast ascent.
Degassing The removal of oil and gas from the drilling mud which may then be used again.
Dehydration Plant/ Water Separation Plant
Various types of equipment for the "drying" of gas or oil.
DEL Delivery
DELREDEL Delivery and Redelivery
DEM Demurrage - A fixed sum, per day or per hour, agreed to be paid for the detention of the vessel under charter at the expiration of the allowed laytime.
Demurrage Money paid to shipowner by charterer, shipper or receiver, for failing to complete loading/discharging within time allowed according to charter-party.
Derrick Man Platform worker handling the drill stem in the tower.
DES Disaster Emergency Services
Deviated Well A hole which intentionally is not drilled straight down.
DF Dead Freight ; Direction finder
DFD Demurrage/Free Dispatch - An expression confirming that a ship owner may be entitled to demurrage for port delay to his vessel, but that no dispatch is applicable in case laytime is saved - e.g.: "$ 2,000 Demurrage/Free Dispatch". Common in short-sea and other trades where turn-a-round in port is speedy; for example, ro-ro vessels.
DG Directorate General - the term used for the various departments of the EU-Commission.
DHD / D½D Demurrage/Half Dispatch - This term, often found in voyage charter negotiations, signifies that dispatch money is to be paid at half the daily demurrage rate.
DHPT Department of Highways and Public Transportation
Diamond Bit The tip of the drill stem reinforced with diamond to prolong its lifetime.
DIP Depth of liquid = to American expression: gauge
Dip Meter An instrument to measure deviations in the vertical component in the terrestrial magnetic field. Used to determine the position of the sediment and its structure, and to measure the deviation of the drilling hole.
Directional Drilling see Deviated Well.
DIS Dansk Internationalt Skibsregister - Danish International Shipregister.
DISP Dispatch - An agreed amount per day or per hour agreed to be paid to terminals or charterer of a vessel for prompt turnaround of a vessel. Usually half the amount of the agreed demurrage rate. (Demurrage - Half Dispatch).
Dispatch Remuneration payable by shipowner to charterer, shipper or receiver for loading/discharging in less than the time allowed according to charter-party.
Disposal Well Drilling hole which is prepared for the re-injection of produced saline into the reservoirs.
Diving Bell Bell shaped construction for deep sea diving.
Diving Support Vessel Ship with diving equipment on board, carrying out various types of diving operations. May also be equipped with remotely operated or controlled sub-sea robots (Remote Operated Vehicle - ROV).
DK Deutsche Schiffs-Revision und Klassifikation
DNME Dynamic Non-Member Economies (referring to dynamic countries which are not members of the OECD)
DNMF Det norske maskinistforbund - the Norwegian association for Ships' engineers.
DNV Det Norske Veritas (NV) - Norwegian classification society.
DNVPS Det Norske Veritas Petroleum Services
DO Diesel Oil
DOA U.S. Department Of Agriculture
DOC Document of Compliance
DOD U.S. Department Of Defense
DOE U.S. Department Of Energy
DOH