Reinsurance costs for the major protection and indemnity clubs are set to rise by up to 20% because of the multi-billion-dollar losses from the Baltimore bridge disaster, according to broker Marsh.

Reinsurers are preparing to pick up the biggest share of the bill after the 9,962-teu Dali (built 2015) destroyed the Francis Scott Key Bridge in Baltimore in March, leaving six dead and the temporary closure of a major port.