Matson Navigation and MAN Energy Solutions have signed a contract for the retrofit of the main engine aboard the “Daniel K. Inouye”, a container ship in the Matson fleet. Constructed in 2018, MAN Energy Solutions’ after-sales division, MAN PrimeServ, will retrofit the 3,600 teu vessel’s MAN B&W 7S90ME-C engine to an MAN B&W 7S90ME-GI type capable of operating on LNG and fuel oil. The contract includes an option for a second vessel.

Jens Seeberg, Head of Retrofit & Upgrades at MAN Energy Solutions, PrimeServ Denmark said: “Retrofitting an MAN B&W engine to dual-fuel running is a straightforward, proven process as our standard, electronic diesel engines are already built as ‘dual-fuel ready’ and are therefore readily convertible. Dual-fuel retrofits offer a viable pathway to shipowners such as Matson who foster a company-wide ethic of environmental sustainability and wish to achieve a net-zero carbon footprint by 2050. Ultimately, when bio-LNG and SNG come on-line in sufficient volumes, ME-GI engines operating on these fuels will also satisfy such net-zero aspirations.”

MAN Energy Solutions states that, as the lowest carbon-intensity fuel, operation on LNG is projected to reduce the Daniel K Inouye’s CO2 emissions by 24% with a maximum, guaranteed, ultra-low methane slip of between 0.20-0.28 g/kWh across the load envelope.

As part of the retrofit solution, MAN Energy Solutions will also provide a Pump and Vaporizer Unit (PVU), the prefered high-pressure pump and vaporizer for MAN B&W ME-GI engines, which will be integrated into the Daniel K Inouye’s Fuel Gas Supply System (FGSS). The PVU pressurises LNG to 300 bar and vaporises the liquefied fuel to gaseous form for supply to the main engine. Furthermore, its control system is based on that of the MAN B&W ME-GI engine and thus offers seamless integration and high performance in gas-mode.

MAN Energy Solutions’ successful ME-GI (-Gas Injection) engine has set a new industrial standard for two-stroke propulsion engines aboard – among others –  container vessels, bulk carriers, tankers, LNG carriers and car carriers. The ME-GI engine provides ship-owners and operators with a peerless solution within environmentally friendly and high-efficiency, two-stroke technology, without the greenhouse emissions such as methane slip that are characteristic of other engines.  

BW LPG carriers complete dual-fuel retrofits 

BW LPG – the world’s leading owner and operator of LPG vessels – has announced that it has converted the main engine of the “BW Malacca” to dual-fuel running. The last such conversion for a series of 15 LPG carriers, the ship’s MAN B&W 6G60ME-C9.2 type engine was retrofitted to an MAN B&W 6G60ME-C9.5-LGIP dual-fuel type capable of operating on fuel oil and LPG.

The work was carried out at Yiu Lian Dockyards in Shenzhen, China in conjunction with the vessel’s scheduled, five-year docking and under the supervision of MAN PrimeServ, MAN Energy Solutions’ after-sales division. The BW Malacca has since passed sea trials.

Pontus Berg, Executive Vice President (Technical) at BW LPG, expressed appreciation for MAN Energy Solutions and said: “We could not have accomplished this ambitious project on our own. Our success lies in close collaboration with many experts in their field – MAN Energy Solutions and Yiu Lian Dockyards are two of many partners we thank for their support over the years. BW LPG now serves customers with the world’s largest fleet of LPG dual-fuel propulsion LPG carriers. Powered by LPG, these vessels are not only making tangible reductions in carbon emissions, but also helping our bottom-line in terms of savings on compliant fuel expenses in a high-cost supply situation.” 

Michael Petersen, Senior Vice President and Head of PrimeServ Denmark at MAN Energy Solutions, thanked BW LPG and Yiu Lian Dockyards for their excellent cooperation and said: “It’s very satisfying that this series of conversions has been successfully concluded with all options exercised and within the agreed timeframe – despite pandemic restrictions. Retrofitting these ships also avoids the unnecessary building of additional tonnage.

MAN Energy Solutions reports that ME-LGIP engines have now surpassed 120 orders, with 35 already in service. Indeed, the vast majority of current orders for LPG carriers over 30,000 cubic metres are with ME-LGIP technology, enabling these vessels to use their own cargo as fuel.

Petersen added: “As a low-carbon fuel, LPG is well on its way to becoming the new market standard in this segment. As we move towards a zero-carbon future amidst a strong, global push towards sustainability, these conversions showcase our dual-fuel engine portfolio that is future-proofed to handle whatever alternative fuels come to prominence in the decades ahead.”

Highlights

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