Seaboard said it finalised a newbuilding order worth $180m as it reported a surge in third-quarter earnings.

The New York-listed company, which is the parent of ship operator Seaboard Marine, said in a securities filing that it signed contracts to build the vessels at a price of $60m each. They are scheduled to be delivered in 2024.

The quarterly filing provided scant details of the order, without even mentioning what type of ship had been booked.