Terminology in shipping

For those of you who are not so familiar with shipping, or terms of shipping, please find some terms explained below. If you may want more information about other terms, or have other information you want to share with us and others, please feel free to send an e-mail to our Webmaster who will try to provide an answer for you.

For those of you who are not so familiar with shipping, or terms of shipping, please find some terms explained below. If you may want more information about other terms, or have other information you want to share with us and others, please feel free to send an e-mail to our Webmaster who will try to provide an answer for you.

DeadWeight Tons (DwT)

DwT is the amount in tons that a vessel can carry, and includes besides the cargo, bunkers (gas-oil, freshwater, ballast), provisions, weight of crew and passengers, etc.

Displacement Tons

A vessel's displacement tons is the amount of water in tons it is displacing, that is - the vessel's total weight including cargo. The term displacement tons is most common in the use of describing the size of a battleship. It is also used when calculating which force a ship can cause when bumping into a quay. (Dimensioning quays.)

Gross Register Tons (GRT)

A unit that measures the size of a ship. 1 register ton = 2,83 m3.

The GRT of a vessel is used to decide how many crewmembers a vessel must carry, which amount has to be paid as a coastal fee, harbour dues and other fees. GRT can give the size of a passenger ship and the so-called "paragraph vessels" (499 GRT, 1599 GRT).

Net Register Tons (NRT)

A unit that measures a ships ability to carry cargo. In large terms NRT equals GRT minus the volume of the machine hold, accommodation for the crew, water ballast tanks, etc. In some countries this unit is used to calculate canal- and port dues.

Pallets

Used for carrying/handling general cargo. The most common ones on the Norwegian market are:

Type of palletDimensions l x b x h (mm)Max Transport Cap.Max Storage Cap.
EURO pallet 1200 x 800 x 150 1,0 mt 4,0 mt
Industry pallet 1200 x 1000 x 150 1,5 mt 6,0 mt
Ship pallet 1600 x 1200 x 178 2,0 mt 8,0 mt

* This table indicates that maximum stacking height when fully using the pallets is 4 pallets high (plain foundation).

Besides these standard pallets there are a variety of types and sizes on the market:

Type1: 4-ways without wings
Type2: 4-ways with wings
Type3: 2-ways without wings
Type4: 2 ways with wings

2 or 4 - ways means the pallet can be lifted from either 2 or 4 sides. "Wings" provides the possibility of using straps when handling with a crane.

TEU

Container standard unit, 1 TEU = Twenty feet Equivalent Unit. One standard 20" container measures: 20" x 8" x 8" (L x B x H) = abt 6,096m x 2,438m x 2,438m. One fourty feet container equals 2 TEUs