Marine insurance broker Aon is calling for full transparency from protection and indemnity insurers as they prepare to pass on an expected increase in their reinsurance costs to shipowners.

The International Group of P&I Clubs is currently renegotiating its two-year reinsurance contract, which covers claims over $100m and up to $3bn, in its pool claims system.

The negotiations are expected to result in a double-digit increase in reinsurance premium for the International Group.