The largest shareholder in New York-listed International Seaways has revealed an agreement to support its pending acquisition of Diamond S Shipping.

New York-based Cyrus Capital Partners, which holds nearly 3.8m International Seaways shares or 13.5% of the company, is throwing its weight behind the proposed merger in a document filed on Friday with US securities regulators.

The merger companies had previously announced there were commitments from 14% of International Seaways holders and 29% of Diamond S' backers in favour of the combination.