The search for missing Malaysia Airlines flight MH370 resumed in the Indian Ocean on Monday following a four-month pause.
The GO Phoenix search ship began scanning the ocean bed on Monday morning using a "towfish," a vessel equipped with sonar and video functions that is capable of identifying jet fuel. The search zone is roughly 1,800 kilometers off Western Australia and is estimated to be up to 6.4 kilometers deep, covering an area of 60,000 square kilometers in a path of ocean referred to as the "seventh arc."
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Two additional ships from Dutch contractor Fugro NV, the Fugro Discovery and the Fugro Equator, will join the search this month, Australian Transport Safety Bureau (ATSB) chief Martin Dolan told The Wall Street Journal. Both vessels will be fitted with a towfish.
The search operation for the missing jet was halted for four months as search crews mapped remote parts of the ocean floor. Fugro NV was awarded the contract to conduct the deep-sea search earlier this year and began an underwater survey, called a bathymetric survey, with the help of Chinese ship Zhu Kezhen.
Over 111,000 square kilometers were mapped in the survey, the ATSB said on Friday. Pieces of volcanoes, rugged ridges up to 300 meters high and trenches, some 1,400 meters deep, were discovered on the seabed.