Big-name owners are vying to win an Equinor tender to build and operate windfarm support ships.

Market sources told TradeWinds that as many as 18 companies could offer in for the work involving three or four new service operation vessels (SOVs) for long-term charter to Norway's state-owned energy company.

Bidding is due to open this month for what is a crucial and unique deal in a depressed market for traditional offshore shipowners.