
Our glossary explains many of the terms
that we commonly use.
BALLAST: Amount of unpaid cargo carried in order to provide sufficient weight to keep a ship stable.
BALLAST LEG: A voyage with no cargo on board, to get a ship in position for next load port or dry docking.
BALLAST TANK: A tank filled with water, to provide stability for a ship on a ballast leg.
BARE-BOAT CHARTER (B/B): An
arrangement for the hiring of a ship,
whereby crew costs and other operating
expenses are not included in the
agreement for a fee payable as a specific
sum per time period. The party that hires
the ship covers crew costs and all other
operating expenses, including docking and
maintenance, in addition to all voyagerelated
costs. On redelivery, the ship shall
be in the same good condition as when
delivered, normal wear and tear excepted.
BARGING: Transfer of cargo to/from a ship from/to a barge.
BROKER: An intermediary who negotiates
freight contracts between owners and
charterers as well as the sale and
purchase of ships.
BUNKERS/BUNKERING: Fuel oil, to power
a ship’s engine. Bunkering is to take on
board bunkers.
CBM: Cubic Metres, volume measurement
= 1 metre x 1 metre x 1 metre.
CHARTER PARTY (C/P): Agreement
between a shipowner and a charterer,
outlining terms and conditions governing
the transaction. The agreement may be
for one or several voyages, or for a certain
period of time.
CHARTERER: The party hiring and paying
for ships or ship space. This may be the
cargo owner, an intermeditory or the
receiver of the cargo.
CLASSIFICATION SOCIETY: A nongovernmental
independent organisation,
e.g. Det norske Veritas, controlling and
verifying that the technical condition, the
safety and quality of a ship complies with
its own rules, as well as those of national
authorities.
COATING: Paint protecting the inside of a
ship’s tanks. Usually epoxy or zinc based
paints.
CONTRACT OF AFFREIGHTMENT
(COA): An agreement between an owner
and a charterer setting the terms for
transportion of given quantities of cargo
during a given period of time.
DEADWEIGHT TON (DWT or TDW): A
measure of the weight carrying capacity
of the ship. The total DWT is the weight of
the ship and the cargo the ship may carry
over and above bunkers, fresh water, spare
parts etc.
DEEP-SEA (GLOBAL) TRADE: Sea-borne
trade that moves on intercontinental trade
routes.
DEMURRAGE: Compensation paid by the
charterer, supplier or receiver of the cargo
for each day or pro rata for time spent in
port during loading/discharging, in excess
of the laytime stipulated in the Charter
Party.
DETERGENTS: A substance used for tank
washing
DNVPS: Det Norske Veritas Petroleum Service
DOUBLE HULL: The ship has an inner
and an outer hull. Such construction
increases the safety during possible
grounding or collision, so that a leakage
may be contained. The space between the
inner and outer hull may also be used as
ballast tank.
DRY DOCK: Putting a ship into dry dock
for inspection and repairs of underwater
parts, and painting of ship bottom. Usually
carried out every 2 ½ to 5 years.
FREIGHT RATE: Agreed price for
transportation, stipulated either per metric
ton of cargo, cubic metre of cargo or as a
lump sum for the total cargo.
IMO: International Maritime Organisation,
the international UN advisory body on
transport by sea.
INORGANIC CHEMICALS: Chemicals which molecular structure containing no carbon atoms (other than as part of a carbonate group), and derived from sources other than hydrocarbons, such as sulphuric acid, phosphoric acid and caustic soda.
ISMC: International Safety Management
Code. The first formalised initiative by IMO
to provide a universal standard for the
safety management systems of ships.
KNOT: A measure of the speed of the ship.
1 knot= 1 nautical mile per hour, that is ≈
1.85 km/h.
LIBOR: London Interbank Offered Rate.
MARPOL: The International Conventions
governing Marine Pollution Prevention. It is
a part of IMO.
M/T: Motor Tanker.
MT: Metric tons
NIS: Norwegian International Ship Register
OECD: Organisation for Economic
Co-operation and Development, an
information-gathering body. The members
are industrialised countries in Western
Europe, North America and the Asia/
Pacific region.
OFF-HIRE: The time a ship is prevented
being gainfully employed for its owner or
charterer, e.g. time used for repairs.
OPA-90: The US Oil Pollution Act of
1990. An American federal law that
imposes strict requirements on shipping
companies, ships and crews when trading
in US waters.
OPERATING EXPENSES: Expenses for crew as well as all other expenses directly connected with the running of the ship, including maintenance and insurance.
OPERATOR: A person in a shipping company whose main duties include taking care of the contact between the ship and the charterer, give instructions to the ship and the port agents concerning stowage, loading and discharging of cargo, and arranging purchase of bunkers etc.
ORGANIC CHEMICALS: Chemicals containing carbon-based molecules, often referred to as petrochemicals when derived from hydrocarbon sources such as oil, gas and coal.
PARCEL TANKER: Tanker designed for the transportation of several different segregated cargoes simultaneously.
PETROCHEMICALS: See organic chemicals.
POOL: A co-operation between owners putting their ships into an operation where net revenues are pooled and divided according to a predetermined distribution key.
PPM: Parts per million (1ppm=0.000001 or 1mg/kg)
SEGREGATION: The division of a ship’s cargo space into individual tanks.
SEP: Safety and Environmental Protection, classification system used by Det norske Veritas.
SHIP MANAGEMENT: The administration of a ship, including services like technical operation, maintenance, crewing and insurance.
SHORT-SEA (REGIONAL) TRADE: Seaborne
trade that moves within regional
trade routes (not intercontinental).
SOLVENTS: A liquid that can dissolve other
substances.
SOx: Sulphur Oxides (SOx), react with moisture in the air to form sulphuric acid.
SPOT RATE: Freight rate for a voyage agreed on the basis of current market level.
STCW: International convention on standards of training, certification and watchkeeping of seafarers.
TIME CHARTER (T/C): An arrangement for the hiring of a ship complete with the crew for a fee, payable as a specific sum per time period. The party that hires the ship pays for bunkers, port and canal charges and any other voyage related costs.
TIME CHARTER EARNINGS: Gross freight revenues minus voyage costs divided by number of trading days, usually expressed in US$ per day.
TON: A gross registered ton is a volume of 100 cubic feet (2.83 cubic meters). Gross registered tonnage is basically the volume of the ship’s closed areas, excluding the bridge, the galley and a few other rooms. Net registered tonnage is the gross tonnage less volumes needed for the operation of the ship (deck storage room, engine room etc.), i.e. the volume available for cargo.
TONNE OR METRIC TONNE: 1,000 kg.
TRADE: The geographical area where a ship mainly trades.
TRADING DAYS: The number of days a ship is not off-hire.
TRANSHIPMENT: Transfer of cargo to/
from a ship from/to another ship. For
example, cargo from a ship within global
trade to a ship within regional trade bound
for final destination/harbour.
VOYAGE CHARTER: An agreement for the transportation of cargo from the port(s) of loading to the port(s) of discharge. Payment is normally per tonne of cargo, and the ship owner pays for bunkers, port and canal charges and other voyage related costs.
VOYAGE EXPENSES: Expenses directly related to the voyage, such as bunkers, port charges, canal dues, etc.