News / Asia

    Dutch Vessel Begins Mapping Ocean Floor in Hunt for MH370

    Fugro Equator
    Fugro Equator
    Reuters
    Flight MH370 Timeline
     
    • March 8: Contact lost less than one hour after departing Kuala Lumpur for Beijing    
    • March 10: Search radius expanded, China urges Malaysia to speed up investigation
    • March 12: Chinese satellite images of possible debris are released and determined not to be related to the plane
    • March 14: Media reports say MH370 communications system continued to ping a satellite hours after plane disappeared
    • March 15:  Malaysian Prime Minister Najib Razak says someone on MH370 likely turned off its communications systems
    • March 20: Australian aircraft investigate possible debris in a remote area of the southern Indian Ocean
    • March 24: Razak says new analysis indicates MH370 crashed in Indian Ocean
    • March 28: Search shifts more than 1,000 kilometers northeast in the Indian Ocean following a new "credible lead"
    • April 1: Malaysia releases full transcript of last exchanges with MH370
    • April 2: Malaysia says all flight MH370 passengers have been cleared of wrongdoing
    • April 4-6: Chinese and Australian ships report hearing signals in different parts of search area
    • April 14: Australia deploys mini-sub in search
    • May 1: Malaysia report says it took 17 minutes to realize MH370 had gone off radar
    • May 27: Malaysia releases raw satellite data used to calculate search area
    • May 29: Australia concludes plane did not crash near where pings were heard
    • June 17: Inmarsat says authorities have yet to search the most likely crash site
    Dutch engineers this week started a months-long survey to map unchartered deep-sea terrain at the bottom of the Indian Ocean, the next step in the search for the wreck of Malaysian Airlines flight MH370, a company official told Reuters.
     
    A survey ship from Dutch engineering company Fugro, carrying 40 crew and technicians, began mapping out an area larger than the Netherlands, some 1000 miles (1,600 km) east of the northwest coast of Australia.
     
    The search for the lost plane is being coordinated by the Australian Transportation Safety Board and is expected to cost 60 million Australian dollars ($56 million) over the first year.
     
    “It's a rough area,” Rob Luijnenburg, strategy director at Fugro, which usually conducts surveys for oil and telecommunications companies, said in an interview on Thursday.
     
    “The area has mountains, ridges, valleys, and you can't see a lot down there unless you make it visible with technology,” he said. “For the first phase you need a good map. Once you have that you can plan the next phase.”
     
    It will take roughly three months for the Fugro Equator survey ship, which is being assisted by a Chinese naval vessel, to map out the typography of the ocean floor.
     
    Once an accurate map has been constructed with the aid of computers on board the ship, searchers can begin more detailed, slower surveys in a bid to find the wreck itself, using unmanned robots and submarines to search the ocean floor.
     
    Flight MH370, carrying 239 crew and passengers, mostly Chinese, disappeared from radar screens on March 8 shortly after taking off from Kuala Lumpur bound for Beijing.

    Uncharted seabed
     
    Investigators say what little evidence they have to work with, including the loss of communications, suggests the Boeing 777 was deliberately diverted thousands of kilometers from its scheduled route.
     
    The area being mapped is largely uncharted, Luijnenburg said, since the area's remoteness and depth at 6,000 meters placed it beyond the reach of the oil industry, which is still pushing down to depths approaching 3,000 meters.
     
    With a long maritime history and seafaring expertise, Dutch companies are leaders in the field of complex, large-scale undersea search and salvage operations.
     
    Wrecks on which Dutch companies have worked include the raising of the Russian nuclear submarine Kursk, which sank in the depths of the Barents Sea in 2000 with the loss of all on board.
     
    More recently, Dutch firms were contracted to help salvage the Costa Concordia cruise liner, which sank off the coast of Italy in 2012.
     
    Fugro's ship will use an echo sounder for the topographic mapping stage, building up a relatively low-resolution picture of the entire area as quickly as possible, its crew staying at sea for a month at a time.
     
    “It's extremely unlikely that we will be able to pick up something the size of an aircraft and make it out to be that at this stage,” Luijnenburg said.
     
    Built in 2012, the vessel is one of four Fugro commissioned that is custom-built for undersea surveying, designed to be quiet and not interfere with the sensitive sonar mapping systems, which measure echoes bounced off the sea floor.
     
    What little is known of the topography of the area comes from satellite imaging and from surveys made in the past by ships that happened to be crossing the area with sonar turned on, he said. Data gathered earlier is inaccurate, because most of it was collected without the help of satellite positionining.

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    by: Clark, Cordell from: Dallas, Texas
    June 19, 2014 8:22 PM
    I’m amazed that little attention is being given to the deep ocean trenches that are present in areas of the Indian Ocean being searched for Malaysia Flt. MH370. Trenches represent the deepest parts of any ocean, and in the Indian Ocean are precipitous drop-offs of from 12,000 ft. to around 24,000 feet. If Flt 370 sank into an Indian Ocean trench (Java or Diamantina), it would take submersibles with humans at the controls to recover any remains. Java (Sunda) Trench runs along the lower Indonesian islands, turns in a northern direction to end near the Andaman & Nicobar island chains in the Bay of Bengal. These Indian Ocean islands re present the northern direction that MH370 would have taken after communication was lost. Since it’s thought that the plane glided down into the southern Indian Ocean, wreckage could hava sank into the Diamantina Trench, which runs for thousands of miles near Perth, Australia. Considering the vastness of the Ocean, along with degeneration brought on by prolonged water exposure & high pressure conditions, future searches should include islands around these Indian Ocean trenches.

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