New York-listed Seacor Marine has taken over Chinese partner Cosco's share in their offshore vessel joint venture.

The US company has bought the 50% in Seacosco Offshore that it did not own from the state-controlled shipping giant, for a price of $28.15m in cash.

Seacor said the deal further modernises its fleet through consolidating ownership of eight Rolls-Royce-designed platform supply vessels (PSVs).