The car carrier mv Tonsberg is one of the world’s largest Ro/Ro vessels, built by Mitsubishi Heavy Industries for Wilhelmsen Lines Shipowning at Nagasaki Shipyard & Machinery Works. The mv Tonsberg is the first vessel of the W/W’s fifth generation Ro/Ro vessel. The car carrier has nine decks including 3 hoistable decks. High and heavy cargo units are loaded on the strengthened decks of the Nos. 1 to 5 and 7. Deck Nos. 4B, 6 and 8 are hoistable decks allowing variation of cargo. These deck panels are operated by electric driven winches and constructed of steel frame and plywood top plate to save weight. The car carrier mv Tonsberg has single stern ramp on starboard-side aft, the capacity and sizes of which is 505 ton and 44.50 m long x 12 0m (shore side)/25m (inboard side) wide.
The main engine is an electronically controlled type diesel engine (MAN B&W 7L70ME-C8) and three types of generators, three sets of diesel generators, one shaft generator and one turbo generator, are adopted. Considering environmental protection, the ballast water treatment system (Unitor by Wilhelmsen Technical Solutions) is installed to prevent transfer of harmful microorganisms between ecosystems.
L (o.a.) x L (b.p.) x B x D x d: 265m x 250m x 32.26m x 33.22m x 12.3m
DWT/GT: 43,880 / 74,622
Main engine: MAN B&W 7L70ME-C8
MCR: 20,100 kW
Speed, service: abt 20.25kt