ett in ▁had ▁been ▁closed . ▁ ▁New ▁enter prise ▁ 1 9 3 9 ▁a ▁new ▁company ▁- ▁also ▁named ▁V ul can ▁- ▁was ▁founded ▁on ▁the ▁site ▁of ▁the ▁former ▁St ett in - ship yard . ▁Alt ogether ▁ 3 4 ▁construction ▁numbers ▁were ▁started ▁in ▁the ▁following ▁years , ▁including ▁ 1 8 ▁type - V II ▁C ▁sub mar ines . ▁But ▁because ▁of ▁the ▁war ▁only ▁a ▁few ▁ships ▁could ▁be ▁launched ▁and ▁completed . ▁Among ▁these ▁were ▁two ▁sub mar ines , ▁ ▁but ▁only ▁one ▁of ▁them ▁() ▁was ▁ever ▁in ▁service ▁while ▁the ▁second ▁one ▁() ▁was ▁destroyed ▁by ▁al lied ▁air ▁attacks ▁before . ▁During ▁the ▁war ▁the ▁yard ▁explo ited ▁slave ▁workers ▁and ▁had ▁its ▁own ▁prisoner ▁camp , ▁part ▁of ▁the ▁prisoner ▁population ▁engaged ▁in ▁anti - N azi ▁resistance , ▁successfully ▁sab ot aging ▁several ▁constructed ▁ships ▁After ▁World ▁War ▁II ▁the ▁slave ▁workers ▁were ▁fre ed ▁and ▁the ▁ship yard ▁was ▁finally ▁taken ▁over ▁by ▁the ▁Polish ▁government ▁and ▁the ▁ ▁new ▁Sz cz ec in ▁Sh ip yard ▁was ▁started ▁at ▁this ▁site . ▁The ▁Sz cz ec in ▁Sh ip yard ▁named ▁one ▁of ▁its ▁wh ar fs ▁" W ul kan " ▁and ▁two ▁s lip ways ▁" W ul kan ▁ 1 " ▁and ▁" W ul kan ▁Now a ". ▁ ▁Sh ips ▁built ▁by ▁AG ▁V ul can ▁St ett in ▁( selection ) ▁▁ 1 8 5 1 , ▁Con str