▁that ▁includes ▁information ▁per tain ing ▁to ▁the ▁wind ▁and ▁current ▁drag ▁of ▁the ▁vessel ▁and ▁the ▁location ▁of ▁the ▁thrust ers . ▁This ▁knowledge , ▁combined ▁with ▁the ▁sensor ▁information , ▁allows ▁the ▁computer ▁to ▁calculate ▁the ▁required ▁ste ering ▁angle ▁and ▁thr uster ▁output ▁for ▁each ▁thr uster . ▁This ▁allows ▁operations ▁at ▁sea ▁where ▁mo oring ▁or ▁anch oring ▁is ▁not ▁feas ible ▁due ▁to ▁deep ▁water , ▁con g estion ▁on ▁the ▁sea ▁bottom ▁( pip elines , ▁templates ) ▁or ▁other ▁problems . ▁ ▁Dynamic ▁position ing ▁may ▁either ▁be ▁absolute ▁in ▁that ▁the ▁position ▁is ▁locked ▁to ▁a ▁fixed ▁point ▁over ▁the ▁bottom , ▁or ▁relative ▁to ▁a ▁moving ▁object ▁like ▁another ▁ship ▁or ▁an ▁under water ▁vehicle . ▁One ▁may ▁also ▁position ▁the ▁ship ▁at ▁a ▁favor able ▁angle ▁towards ▁wind , ▁waves ▁and ▁current , ▁called ▁weather van ing . ▁ ▁Dynamic ▁position ing ▁is ▁used ▁by ▁much ▁of ▁the ▁off sh ore ▁oil ▁industry , ▁for ▁example ▁in ▁the ▁North ▁Sea , ▁Pers ian ▁G ulf , ▁G ulf ▁of ▁Mexico , ▁West ▁Africa , ▁and ▁off ▁the ▁coast ▁of ▁Brazil . ▁There ▁are ▁currently ▁more ▁than ▁ 1 8 0 0 ▁D P ▁ships . ▁ ▁History ▁Dynamic ▁position ing ▁began ▁in ▁the ▁ 1 9 6 0 s ▁for ▁off sh ore ▁dr illing . ▁With ▁dr illing ▁moving ▁into ▁ever ▁deeper ▁waters , ▁Jack - up ▁b arg es ▁could ▁not ▁be ▁used ▁any ▁more , ▁and ▁anch oring ▁in ▁deep