JHW has placed an order for five 85,000m³ ethane carriers (VLECs) for United Ethane Carriers, a JACCAR / Hartmann Reederei joint venture.
Each of these vessels will be powered by a single MAN B&W 6G60ME-GI main engine.
The vessels will be constructed by Dalian Shipbuilding Industry Offshore in China and the engines will be built by Hyundai Heavy Industries (HHI) in Korea.
The first carrier of the five will be delivered in the middle of 2017.
Hartmann Schiffahrts fleet manager Ulrich Adami said: "The ME-GI engine appealed to us for several reasons, not least its environmental credentials with negligible slip of gas fuel, and its robust, stable combustion properties, even in heavy seas.
"We also viewed its high-fuel efficiency and its flexibility of being able to run on HFO or ethane as pluses when it came to selecting main engines for our newbuildings."
The ME-GI engine is incorporated with MAN Diesel & Turbo’s exhaust gas recirculation (EGR) technique, which allows it to adhere to the Tier III emission requirements.
It has the flexibility to be fuelled by either HFO or natural gas.
The engine will feature an injection pressure of 400 bars and constitute the main part of a propulsion system that also features a MAN Diesel & Turbo Alpha controllable pitch propeller.
The ME-GI engines will drive VBS1810 propellers which are said to be the largest Mk 5 models (with a diameter of 7.6m) ordered from MAN Diesel & Turbo’s propeller portfolio to date.
The propeller plant is fitted with propeller blades of Kappel design, as well as a fairing cone / rudder bulb system, which enhances the efficiency of the engine.
MAN Diesel & Turbo will also supply haft-alternator system to all the vessels.
Once the wells are constructed, they will be the largest ethane carriers ever constructed.
MAN Diesel & Turbo currently has eight ethane engines on order.
The JHW order is a result of a letter of intent signed by Hartmann Schiffahrts, Jaccar Holdings, HB Hunte Engineering and DNV GL at the SMM 2014 trade fair.
Image: An artist’s impression of the largest ethane carrier. Photo: courtesy of MAN SE.