In this Monday, April 14, 2014, photo provided by the Australian Defence Force an autonomous underwater vehicle is deployed from ADV Ocean Shield in the search of the missing Malaysia Airlines Flight 370 in the southern Indian Ocean. The search area for the missing Malaysian jet has proved too deep for the robotic submarine which was hauled back to the surface of the Indian Ocean less than half way through its first seabed hunt for wreckage and the all-important black boxes, authorities said on Tuesday. (AP Photo/Australian Defence Force, LEUT Kelli Lunt) EDITORIAL USE ONLY

Phoenix Autonomous Underwater Vehicle (AUV) Artemis is craned over the side of Australian Defence Vessel Ocean Shield in the search for missing Malaysia Airlines flight MH 370.