North Sea offshore shipping companies should not be expecting the burgeoning offshore wind market to save them from weak oil and gas rates any time soon.

Norwegian shipbroker Seabrokers said October had turned out to be a "rather sobering" month for owners of anchor-handling tug supply (AHTS) ships.

Average day rates increased substantially through August and September, but those heady days left a hangover in their wake, with earnings plummeting again in October, the company added.