L oss ▁of ▁position ▁should ▁not ▁occur ▁from ▁any ▁single ▁failure ▁including ▁a ▁completely ▁bur nt ▁fire ▁sub ▁division ▁or ▁flo oded ▁wat ert ight ▁compart ment . ▁ ▁Classification ▁Soci eties ▁have ▁their ▁own ▁Class ▁not ations : ▁ ▁D N V ▁rules ▁ 2 0 1 1 ▁P t 6 ▁Ch 7 ▁introduced ▁" D PS " ▁series ▁of ▁classification ▁to ▁comp ete ▁with ▁A BS ▁" D PS " ▁series . ▁ ▁N MA ▁Where ▁I MO ▁leaves ▁the ▁decision ▁of ▁which ▁class ▁applies ▁to ▁what ▁kind ▁of ▁operation ▁to ▁the ▁operator ▁of ▁the ▁D P ▁ship ▁and ▁its ▁client , ▁the ▁Norwegian ▁Mar itime ▁Author ity ( N MA ) ▁has ▁specified ▁what ▁Class ▁should ▁be ▁used ▁in ▁regard ▁to ▁the ▁risk ▁of ▁an ▁operation . ▁In ▁the ▁N MA ▁Gu idel ines ▁and ▁Notes ▁No . ▁ 2 8 , ▁en closure ▁A ▁four ▁classes ▁are ▁defined : ▁ ▁Class ▁ 0 ▁Oper ations ▁where ▁loss ▁of ▁position ▁keeping ▁cap ability ▁is ▁not ▁considered ▁to ▁end anger ▁human ▁lives , ▁or ▁cause ▁damage . ▁Class ▁ 1 ▁Oper ations ▁where ▁loss ▁of ▁position ▁keeping ▁cap ability ▁may ▁cause ▁damage ▁or ▁poll ution ▁of ▁small ▁consequence . ▁Class ▁ 2 ▁Oper ations ▁where ▁loss ▁of ▁position ▁keeping ▁cap ability ▁may ▁cause ▁personnel ▁injury , ▁poll ution , ▁or ▁damage ▁with ▁large ▁economic ▁consequences . ▁Class ▁ 3 ▁Oper ations ▁where ▁loss ▁of ▁position ▁keeping ▁cap ability ▁may ▁cause ▁fatal ▁acc idents , ▁or ▁severe ▁poll ution ▁or ▁damage ▁with