Norway's Eidesvik Offshore is eyeing cooperation with Belgium's DEME after agreeing to sell a construction service vessel (CSV).

The Oslo-listed owner said the 145.6-loa Viking Neptun (built 2015) will be handed over to DEME in the final three months of this year, after the completion of a charter to Norwegian operator Havfram.

Eidesvik expects to book a gain on the sale of about NOK 150m ($17.1m).