An illustration shows a Fugro autonomous underwater vehicle (AUV) launched from the Australian-contracted survey ship M/V Fugro Discovery as part of a new high-resolution search for missing Malaysia Airlines flight MH370 in early October, after the mapping of some 110,000 square kilometres of the remote area's vast sea floor
AFP
The search for Malaysia Airlines Flight MH370 enters a new underwater phase this week almost seven months after the jet went missing, with two specialist ships to join the hunt.
MH370 disappeared en route from Kuala Lumpur to Beijing on March 8 with 239 people onboard and no trace of the Boeing 777-200 has been found despite a massive air, sea and underwater search.
Authorities have since used technical data to focus the search in the southern Indian Ocean far west of Western Australia along the thin, long arc from which the plane emitted its last satellite "handshake".
Australia has been spearheading the hunt for the plane, which is believed to have come down after mysteriously diverting off-course, leaving search teams with a dauntingly vast task that has been beset by false leads and initial confusion -- to the continued frustration of grieving relatives.
The latest phase to begin in early October will see two ships -- Fugro Discovery and Malaysian-contracted GO Phoenix -- send sophisticated sonar systems some 5,000 metres (3 miles) below sea level to search the ocean floor using sound waves, the Australian Transport Safety Bureau (ATSB) said.
The systems, attached to the ships by tow cables up to 10 kilometres long, have been programmed to detect the biggest parts of the aircraft that are likely to be in one piece, such as engines, landing gear and fuselage, the ATSB's Peter Foley said.
If "abnormalities" are detected, the ships will return to those areas and pilot the vehicles "slower and lower", using cameras to look at the sea bed, said Foley who is in charge of search operations.
Foley said he was "cautiously optimistic" the underwater probe would be successful, but he acknowledged the "very challenging" conditions faced by the search teams at the remote and largely unexplored location.
