Chinese liquefied gas carrier operator Tianjin Southwest Maritime has exercised the option to retrofit the main engines on board another two liquefied petroleum gas (LPG) vessels to dual-fuel operations at Cosco Shipping Heavy Industry (Guangdong).

Last October, the operator reached a contract with MAN Energy Solutions’ after-sales division, MAN PrimeServ, for the dual-fuel conversions of its Gas Gemini and Gas Aquarius vessels.

The company will now also retrofit the individual MAN B&W 6G60ME-C engines on board the Gas Libra and Gas Scorpio carriers, replacing them with dual-fuel MAN B&W 6G60ME-LGIP units.

Both vessels are expected to enter drydock next January.

As with the previous two vessels, MAN PrimeServ will jointly conduct the work with CSSC Marine Service (CMS), the after-sales unit of CSSC Marine Power Group.

MAN PrimeServ senior vice-president Per Rud said: “It’s crucial to nurture partnerships to successfully pull off dual-fuel retrofit projects and we are very happy to collaborate with CMS on these – now – four vessel retrofits.

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By GlobalData

“Significantly, this will be our first time working with a licensee’s own after-sales division; the after-sales market should know that MAN PrimeServ is open to working with partners in order to support shipowners globally.”

This follows an order from Oslo-listed BW LPG last June for the conversion of BW Malacca’s main engine to dual-fuel operations under the supervision of MAN PrimeServ.

The ship was the last retrofit in a series of 15 LPG carriers at Yiu Lian Dockyards in Shenzhen.

Last February, MAN PrimeServ Augsburg completed retrofitting dual selective catalytic reduction (SCR) systems on board the MS Amadea cruise vessel.