Fred. Olsen Windcarrier has formed an alliance in the crew transfer vessel (CTV) sector with Sweden's Northern Offshore Services (N-O-S).

An agreement has been put in place for N-O-S to commercially manage Olsen's seven CTVs with immediate effect.

"Fred. Olsen Windcarrier’s fleet of CTVs will be integrated into N-O-S’s existing management and organisation," the Olsen holding company Bonheur said.

Windcarrier also has two jack-up vessels and 75.5%