 Vuosaari shipyard was merged with Wärtsilä in 1986 to form Wärtsilä Marine of which Valmet owned 30%.After the downturn in shipbuilding in the mid-1980s, the company decided to close the Vuosaari shipyard on 13 January 1987 and move the shipbuilding to Helsinki Shipyard in Hietalahti.In 1987–1991 various shipping companies rented the old shipyard from Wärtsilä for routine dockings.