Owners are bringing more OSVs out of layup in an increasingly buoyant North Sea market.
Broker Westshore identified five ships that have been reactivated since the start of March.
Havila Shipping's 3,700-dwt platform supply vessel (PSV) Havila Clipper (built 2011) has re-entered the market after 67 days idled in Bergen.
It was returned from a charter a few weeks early last November.
