The company said it is expanding the capacity of three panamaxes at Huarun Dadong Dockyard (HRDD) to keep them competitive and ensure profitable operations.

It claims this is a world first and has received enquiries from rivals about the process.

NSB aims to boost teu capacity by more than 20%, with energy efficiency on a par with a newbuilding.

The 4,860–teu MSC Geneva (built 2006) is the first of its vessels to undergo the technique.

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