NSS Spółka z o.o. is the Polish maritime industrial company founded and owned by Olsen Gruppen AS.

Since 2007 NSS have been executing enterprise contracts for Norwegian shipyards, between others : Bergen Group BMV, Nymo AS, Havyard Leirvik AS.

Since 2009 NSS have been developing production in Poland with the main focus on lengthening, repairs and conversion of the vessels, fabrication of marine cranes and offshore structures.

Since 2011 NSS has entered into new building market.

NSS has welding procedures certified by DNV in accordance with OS C-401 standard.

NSS has also welding procedures certified by Polish Register of Shipping.