rew ▁- ▁Offic ers ▁- ▁ 1 2 ▁- ▁Other ▁- ▁ 5 5 . ▁ ▁Normal ▁end urance ▁( port - to - port ) ▁- ▁ 4 5 ▁days . ▁ ▁D AMP ▁ship ▁instrument ation ▁ ▁The ▁D AMP ▁ship ▁was ▁instrument ed ▁with ▁various ▁systems ▁designed ▁to ▁locate ▁and ▁track ▁incoming ▁ball istic ▁miss iles ▁in ▁the ▁predicted ▁impact ▁area , ▁as ▁well ▁as ▁instrument ation ▁to ▁record ▁raw ▁data . ▁ ▁Rad ar ▁One ▁of ▁the ▁two ▁AN / FP Q - 4 ▁rad ars ▁ab o ard ▁the ▁D AMP ▁ship ▁permitted ▁the ▁tracking ▁of ▁be acon - car ry ing ▁targets ▁to ▁an ▁un ambigu ous ▁range ▁of ▁. ▁The ▁L - band ▁and ▁U H F ▁rad ars , ▁which ▁shared ▁a ▁common ▁anten na , ▁permitted ▁observation ▁of ▁the ▁target ▁by ▁ill um ination ▁to ▁supp lement ▁the ▁C - band . ▁The ▁AN / F PS - 1 2 ▁rad ar ▁permitted ▁surve ill ance ▁of ▁the ▁general ▁vic inity ▁of ▁the ▁D AMP ▁ship ▁as ▁well ▁as ▁vector ing ▁of ▁aircraft ▁which ▁may ▁be ▁assigned ▁to ▁the ▁ship . ▁ ▁The ▁te lem etry ▁ac quisition ▁system ▁was ▁a ▁pass ive ▁ac quisition ▁aid ▁operated ▁on ▁the ▁inter f ere ometer ▁principle ▁which ▁gives ▁angular ▁position ▁of ▁the ▁target ▁relative ▁to ▁the ▁ship . ▁It ▁was ▁not ▁a ▁direct ▁source ▁of ▁range ▁information . ▁Te lem etry ▁data ▁was ▁recorded ▁on ▁Mag net ic ▁t ape ▁at ▁ 7 . 5 ,