DOF Group chief executive Mons Aase holds out no great hope for a boost to anchor-handling tug supply (AHTS) vessel earnings for the rest of 2021.

Speaking on the company's first-quarter results webcast, he said this year should be viewed as a recovery phase, and there could be an "upcycle" in 2022.

"We don't expect 2021 to be a very good year," he added.