CANBERRA, Safar 13, 1437, November 25, 2015, SPA -- A third ship will join the deep sea hunt for a missing Malaysian airliner as the 13-month-old search of a huge expanse of the Indian Ocean ramps up during the southern hemisphere summer, officials said Wednesday, according to AP. The search for Malaysia Airlines Flight 370 was scaled back to two ships towing sonar equipment during the winter when the remote target area more than 1,800 kilometers (1,100 miles) southwest of Australia was buffeted by gale-force winds and mountainous waves. The search has covered more than 70,000 square kilometers (27,000 square miles) since it began in October last year based on analysis of scant satellite information that tracked Flight 370's final flight on March 8 last year. Authorities are unable to explain why the Boeing 777 went far off course with 239 people aboard during a flight from Kuala Lumpur, Malaysia, to Beijing. A third ship Havila Harmony, equipped with a video camera inside an underwater drone, will leave the Australian port of Fremantle on Saturday and reach the remote search area five days later, the Australian Transport Safety Bureau said in a statement. The bureau, which conducts the search on behalf of Malaysia, said the Havila Harmony would investigate rugged seabed terrain which cannot be effectively searched with less maneuverable towed side-scan sonar. --SPA. 11:43 LOCAL TIME 08:43 GMT www.spa.gov.sa/w