shaft%20generators%20and%20a%20power%20management%20and%20control%20system.%20The%20hybrid%20arrangement%20provides%20power%20to%20US255%20azimuth%20thrusters%20with%20ducted%20fixed%20pitch%20propellers%20that%20can%20be%20rotated%20360%20degrees%20around%20the%20vertical%20axis.%20This%20arrangement%20optimises%20omni-direc 썸네일형 리스트형