BW LPG is converting four more VLGCs to LPG propulsion following a successful test of the first ever such fuel supply system (LFSS).
Finnish technology group Wartsila said its kit has undergone a full trial with a two-stroke engine.
BW had originally signed up in 2018 for four retrofits, but has now agreed a contract for four more. The vessels will be the first to ever run on LPG.
"Following the tests, in which the performance exceeded expectations, BW LPG decided to exercise their option to retrofit an additional four vessels, making a total of eight ships to benefit from this technology," Wartsila said.
Wartsila has been designated as the system integrator for the retrofittings.
It will fit the fuel supply systems and make ship design modifications.
“This project is yet another example of Wartsila’s leading position in bringing innovative systems that increase efficiency and support environmental sustainability, to the market," said its project manager Peter Zurcher.
"The use of LPG as a marine fuel is likely to increase in the future, and a high quality, reliable, supply system is essential if this is to happen.”
MAN Energy Solutions is supplying the engines. It tested a two-stroke LPG engine in 2018.
Yards in Singapore or China were being eyed for the work, which was at that time planned for the first quarter of 2020.
Wartsila said the jobs will now start in April.
The first four vessels earmarked for the conversions were the 84,145-cbm VLGCs BW Gemini, BW Leo, BW Libra and BW Orion (all built 2015).
Each retrofit was expected to add 40 to 50 days to their scheduled first drydockings.
“BW LPG is pleased to work with Wartsila and collaborate on industry-leading innovations. We are confident that through such partnerships, BW LPG can play a leading role in the decarbonisation of our industry, and the broader transition towards cleaner energy,” said Serge Schwalenstocker, project manager for BW LPG.
