Usually a smaller ship with one or two box-shaped holds, reinforced tanktop (15-20t/m2) to allow heavy and project cargoes, often fitted with a removable tweendeck. Ships of this type are able to transport a large number of commodities, such as general cargoes, containers, bulk cargoes, steel coils, timber and paper products, dangerous goods, etc. It is predicted that a large number of such vessels will be needed to replace the fleet of ageing general cargo ships.