Net register tonnage (NRT, nrt, n.r.t.) is a ship's cargo volume capacity expressed in "registertons", one of which equals to a volume of 100 cubic feet
conducted gun attacks which disposed of 57 small ships totaling 5,284 grossregistertons. All except two of these vessels were boarded and their native crews
register tonnage). Deadweight tonnage is generally measured now in metric tons (tonnes). Registertons are measured in cu. ft, with one registerton equivalent
displacement. Also, unlike the net register tonnage, the net tonnage is unitless and thus can not be defined as "tons" or "net tons". The International Convention