▁water ▁was ▁not ▁econom ical . ▁ ▁As ▁part ▁of ▁Project ▁Moh ole , ▁in ▁ 1 9 6 1 ▁the ▁dr ill ship ▁C uss ▁ 1 ▁was ▁fitted ▁with ▁four ▁ste er able ▁prop ellers . ▁The ▁Moh ole ▁project ▁was ▁attempting ▁to ▁dr ill ▁to ▁the ▁Moh o , ▁which ▁required ▁a ▁solution ▁for ▁deep ▁water ▁dr illing . ▁It ▁was ▁possible ▁to ▁keep ▁the ▁ship ▁in ▁position ▁above ▁a ▁well ▁off ▁La ▁J ol la , ▁California , ▁at ▁a ▁depth ▁of ▁ 9 4 8 ▁meters . ▁ ▁After ▁this , ▁off ▁the ▁coast ▁of ▁Gu ad alu pe , ▁Mexico , ▁five ▁holes ▁were ▁d ril led , ▁the ▁deep est ▁at ▁ 1 8 3   m ▁( 6 0 1   ft ) ▁below ▁the ▁sea ▁floor ▁in ▁ 3 , 5 0 0 ▁m ▁( 1 1 , 7 0 0   ft ) ▁of ▁water , ▁while ▁maintain ing ▁a ▁position ▁within ▁a ▁radius ▁of ▁ 1 8 0 ▁meters . ▁The ▁ship ' s ▁position ▁was ▁determined ▁by ▁rad ar ▁r anging ▁to ▁bu o ys ▁and ▁son ar ▁r anging ▁from ▁sub se a ▁be a cons . ▁ ▁Where as ▁the ▁C uss ▁ 1 ▁was ▁kept ▁in ▁position ▁manually , ▁later ▁in ▁the ▁same ▁year ▁Sh ell ▁launched ▁the ▁dr illing ▁ship ▁E ure ka ▁that ▁had ▁an ▁analog ue ▁control ▁system ▁inter fac ed ▁with ▁a ▁t aut ▁wire , ▁making ▁it ▁the ▁first ▁true ▁D P ▁ship