▁a ▁combined ▁. ▁It ▁has ▁two ▁ ▁four - bla de ▁prop ellers , ▁and ▁its ▁complement ▁is ▁four ▁crew ▁members ▁and ▁five ▁passengers . ▁ ▁The ▁lif eb o at ▁has ▁a ▁maximum ▁speed ▁of ▁ ▁and ▁a ▁cru ising ▁speed ▁of ▁. ▁Cape - class ▁lif eb o ats ▁have ▁fuel ▁capac ities ▁of ▁ ▁and ▁ranges ▁of ▁ ▁when ▁cru ising . ▁Cape ▁D au ph in ▁is ▁capable ▁of ▁operating ▁at ▁wind ▁spe eds ▁of ▁ ▁and ▁wave ▁height s ▁of ▁. ▁It ▁can ▁to w ▁ships ▁with ▁disp lac ements ▁of ▁up ▁to ▁ ▁and ▁can ▁with stand ▁ ▁wind s ▁and ▁- high ▁breaking ▁waves . ▁ ▁Communic ation ▁options ▁include ▁Ray the on ▁ 1 5 2 ▁H F - S SB ▁and ▁Motor ola ▁Spect ra ▁ 9 0 0 0 ▁V H F 5 0 W ▁rad ios , ▁and ▁a ▁Ray the on ▁RA Y ▁ 4 3 0 ▁loud h ail er ▁system . ▁The ▁boat ▁also ▁supports ▁the ▁Sim rad ▁T D - L 1 5 5 0 ▁V H F - FM ▁radio ▁direction ▁find er . ▁Ray the on ▁provides ▁a ▁number ▁of ▁other ▁electronic ▁systems ▁for ▁the ▁lif eb o at , ▁including ▁the ▁RA Y CH ART ▁ 6 2 0 , ▁the ▁ST ▁ 3 0 ▁heading ▁indicator ▁and ▁ST ▁ 5 0 ▁depth ▁indicator , ▁the ▁N AV ▁ 3 9 8 ▁global ▁position ing ▁system , ▁a ▁RA Y PI L OT ▁ 6