Sweden's MMT has fixed a Simon Mokster Shipping offshore construction vessel (OCV) for another 18 months.

Mokster said the 1,400-dwt Stril Explorer (built 2010) has been on charter to MTT since April 2014.

It is operated by MMT's partner Reach Subsea under a cooperation agreement.

"Mokster is proud to strengthen its relationship with MMT moving forward," Mokster said.

"The vessel will be used in various survey-related projects by MMT."