Norwegian offshore shipowner Shearwater GeoServices has clinched a $437m refinancing after big expansion in recent years.

The company, owned 19% by Oslo-listed GC Rieber Shipping, has replaced most of its borrowings, including the $325m bridging facility dating from the acquisition of the seismic assets and operations of Schlumberger's WesternGeco in November 2018.

The new debt matures over two and four years, replacing $500m of earlier borrowings.