The arrangement helps Den Norske Krigsforsikring for Skib (DNK) run a tight and efficient operation with just 17 staff, although it is a mutual insuring some 3,250 ships and rigs valued at $216bn and has a reserve of more than $800m.

There had been a long-standing hull claims co-operation deal between DNK and the Norwegian Hull Club but a relocation of the latter’s Oslo office sparked a review.

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