The technology group Wärtsilä’s integrated propulsion and cargo handling solution will deliver high efficiency for a new 30,000 cbm LNG vessel.

The ship is being built at the Hyundai Mipo Dockyard (HMD) in South Korea on behalf of Norway based Knutsen OAS Shipping.

The Wärtsilä solutions will ensure effective interfacing between the vessel’s propulsion, onboard auxiliary power generation, and cargo control processes.

Such integration is essential in achieving full fuel-efficiency. The order with Wärtsilä was booked in January 2019, and the contract includes an option for an additional sister vessel.

The 5-cylinder WinGD X52DF dual-fuel main engine and the Wärtsilä auxiliary dual-fuel engines are essential for the BOG management system, which monitors and controls the cryogenic cargo, to ensure, in combination with a Wärtsilä developed mixed refrigerant re-liquefaction unit, all time control over the cargo tank pressure and temperature.

The vessel will be one of the first LNG carriers in its size to be equipped with space-saving C-type bi-lobe cargo tanks.

The scope of supply includes three Wärtsilä 20DF dual-fuel auxiliary engines that power the board net, thrusters, cargo control system, and re-liquefaction module.

The main engine and single Wärtsilä Controllable Pitch Propeller system allow the vessel to operate at its highest fuel efficiency design point, in a combinator mode controlling the shaft power, pitch and speed.

The Wärtsilä equipment is scheduled for delivery in 2020, and the vessel is expected to be delivered during the first half of 2021.

Under a 12-year long term charter, the vessel will be operated by Knutsen and chartered to Edison S.p.A, a leading Italian energy services provider. It will be used to supply coastal LNG Deposit terminals in Italy.