TTM03540 | Qualifying companies and ships: Categories of useFrom HM Revenue & Customs · Tonnage Tax ManualDetailsQualifying shipsTo be a qualifying ship, a vessel must be used for one or more of the following categories of activity:Carriage of passengers by sea - see TTM03545;Carriage of cargo by sea - see TTM03550;Towage, salvage or other marine assistance carried out at sea, see TTM03560.PreviousNext