Norway's Golden Energy Offshore Services (GEOS) has extended a charter deal for a large platform supply vessel (PSV).
The 5,300-dwt Energy Swan (built 2005) will stay on with Wintershall in Norway until at least 31 December this year.
A firm four-year deal was signed in 2013, with four years of options.
This was stretched by nine months initially.
"The charter rate reflects the market conditions," the company said.
