Feature 4 | CONTAINER SHIPS


CFD analysis has allowed naval architects to optimise the hull lines both at the front of the ship and at the rear


Positioning of the bridge and


accommodation block forward of midships allows for a better view from the bridge, for manoeuvring, and increases the cargo capacity says DNV. Ultra-long stroke MAN S90 ME C-9.2


engines will be installed on the APL ships. Te engine is MAN’s latest unit and is designed specifically for slow steaming vessels and will used with a large propeller. DNV expect that there will be some space


set aside for a ballast water treatment system and possibly a scrubber. In total the expectation from the new


design, with no new technologies introduced, will save US$3 million in operational costs per year, a US$30 million annual saving over the 10 ship string. In addition the ships will have an energy efficiency design index value that is 36% below the IMO’s baseline fulfilling the 2025 requirements. By cooperating with the yard and class


society APL has harnessed the expertise of a range of professionals that will bring them significant operational savings when the ships are delivered. Additionally the ship designs will meet future environmental regulation levels making the vessels attractive to both cargo owners and charterers. By grasping the nettle now APL stand to make significant gains from their courageous stance. NA


A paradigm shift in container ship design. The hull pressure and wave profile of final hull form


64


The Naval Architect October 2012


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