Siem Offshore has again contracted Wärtsilä to supply the design and integrated solutions for four new platform supply vessels (PSVs) to be built at the Remontowa Shipbuilding yard in Poland. The four new vessels, like the two currently under construction, will utilise the Wärtsilä VS 4411 DF ship design and will have Wärtsilä dual-fuel propulsion allowing them to operate primarily on liquefied natural gas (LNG). With the various Wärtsilä systems having been integrated into a total solution…