Havyard and Esvagt have said they were unaware that Polish yard Nauta allegedly used North Korean 'slave workers' to build a subcontracted OSV hull.
Hegnar Online said a report by the Polish labour inspectorate claims Nauta used 19 staff from North Korea to construct the 5,000-gt wind farm service ship Esvagt Njord for the Danish owner in 2016.
It was subcontracted by Norwegian yard Havyard.
