Norway's Golden Energy Offshore Services (GEOS) has struck a deal to buy the owner of four OSV vessels it is already acquiring.

The Oslo-listed company said it had agreed the acquisition of Golden Energy Offshore Management (GEOM) with Golden Energy Offshore Management Holdings (GEOMH).

It is paying $5m through new GEOS shares and the deal is subject to the successful purchase of four OSVs from GEOM announced earlier this year.