Subsea7 has agreed an extension with Equinor that will keep the 2013-built vessel Seven Viking working on subsea work for the Norwegian energy company through year-end 2027.

The contract continues the parties’ IMR frame agreement, which covers subsea inspection, maintenance and repair work and was first signed in 2018. The latest decision keeps that framework in place rather than ending it.

Under the extension, Seven Viking will carry out IMR activities on Equinor’s subsea oil and gas wells across the Norwegian Continental Shelf.

Project management and engineering support for the work will remain based at Subsea7’s office in Stavanger.

Subsea7 did not disclose detailed commercial terms, but said the value of the extended contract falls in a range between $50m and $150m.