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  2. Ship measurements - Wikipedia

    en.wikipedia.org/wiki/Ship_measurements

    Used mainly to determine the minimum water depth for safe passage of a vessel and to calculate the vessel's displacement (obtained from ship's stability tables) so as to determine the mass of cargo on board. Draft, Air – Air Draft/Draught is the distance from the water line to the highest point on a ship (including antennas) while it is ...

  3. Gross tonnage - Wikipedia

    en.wikipedia.org/wiki/Gross_tonnage

    Since gross tonnage is a bijective function of ship volume, it has an inverse function, namely ship volume from gross tonnage, but the inverse cannot be expressed in terms of elementary functions. A root-finding algorithm may be used for obtaining an approximation to a ship's volume given its gross tonnage. The formula for exact conversion of ...

  4. Gross register tonnage - Wikipedia

    en.wikipedia.org/wiki/Gross_register_tonnage

    Gross register tonnage (GRT, grt, g.r.t., gt), or gross registered tonnage, is a ship's total internal volume expressed in "register tons", each of which is equal to 100 cubic feet (2.83 m 3).

  5. Tonnage - Wikipedia

    en.wikipedia.org/wiki/Tonnage

    Tonnage is a measure of the capacity of a ship, and is commonly used to assess fees on commercial shipping.The term derives from the taxation paid on tuns or casks of wine. In modern maritime usage, "tonnage" specifically refers to a calculation of the volume or cargo volume of a ship.

  6. Displacement (ship) - Wikipedia

    en.wikipedia.org/wiki/Displacement_(ship)

    Shipboard stability computer programs can be used to calculate a vessel's displacement. The process of determining a vessel's displacement begins with measuring its draft. [3] This is accomplished by means of its "draft marks". A merchant vessel has three matching sets: one mark each on the port and starboard sides forward, midships, and astern ...

  7. Net register tonnage - Wikipedia

    en.wikipedia.org/wiki/Net_register_tonnage

    Net register tonnage (NRT, nrt, n.r.t.) is a ship's cargo volume capacity expressed in "register tons", one of which equals to a volume of 100 cubic feet (2.83 m 3).It is calculated by subtracting non-revenue-earning spaces i.e. spaces not available for carrying cargo, for example engine rooms, fuel tanks and crew quarters, from the ship's gross register tonnage.

  8. Dimensional weight - Wikipedia

    en.wikipedia.org/wiki/Dimensional_weight

    Dimensional weight is representative of the weight of the package at the minimum density accepted by the freight carrier. [3] Shipping factors are not only different for imperial and metric measurements, but also for shipment mode and in some cases between different customers. Shipping factors will be available from the freight carrier.

  9. Glossary of nautical terms (M–Z) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_nautical_terms...

    This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water (mostly though not necessarily on the sea). Some remain current, while many date from the 17th to 19th centuries.