NYK has already finished placing an order for new vessels with a view to completing the shift of its current VLCCs (Very Large-sized Crude Oil Carriers) fleet to double-hull structure. However, in light of future growth in the energy transportation sector, this order has been determined to enlarge the existing VLCC fleet. NYK's new VLCCs to be built from January 2005 now number 13, including ten vessels already on order, bringing the total number of NYK's double-hull VLCCs to 33, together with those already completed. NYK has decided to apply, as a standard, a double-hull structure for fuel tanks of all new VLCCs completed from December 2005 onward with a view to protecting the marine environment. The width between the outside shell and the fuel oil tank will be over two meters as with cargo tanks. By separating all oil (including cargo oil) shipped in the vessels by two meters from the outside shell, it is able to minimize risks to the environment due to oil spillage in the event of the hull being damaged.