Net Tonnage (NT) 01
Net Tonnage (NT) 01 :
The replacement, since 1994, for “Net Register Tonnage”. Theoretically the cargo capacity of the ship. Sometimes used to charge fees or taxes on a vessel. The formula is(0.2+0.02 log10(Vc)) Vc (4d/3D)2, for passenger ships the following formula is added: 1.25 (GT+10000)/10000 (N1+(N2/10)), where Vc is the volume of cargo holds, D is the distance between ship’s bottom and the uppermost deck, d is the draught, N1 is the number of cabin passengers, and N2 is the number of deck passengers). “Ton” is figured as a 100 cubic foot ton. An approximate conversion ratio is 1NT = 1.7GT and 1GT = 1.5DWT
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