The Swedish Club has highlighted the causes of containers lost at sea which is one of the most expensive claims it faces as a protection and indemnity insurer.

The Gothenburg-based mutual estimates that an average claim for containers lost overboard amounts to $135,000 which is more than two and a half times higher than the average claims cost.

While lost containers accounts for just 4% of its total number of claims, it accounts for over 10% of its costs.