Tough new sulphur emissions regulations have prompted Denmark’s Maersk Line to issue a tender to yards for 10 new feeder containerships to maintain its operations in the Baltic Sea.

The project, which it is estimated will cost around $550m in total, is being viewed as an essential investment to construct ships purpose-built to operate with low-sulphur fuels in a low emissions environment.

It will add to the huge bill shipping faces as the result of the new 0.1% sulphur content limit for fuel coming into force in the Baltic, North Sea and US from January.