More than a decade after Malaysia Airlines flight MH370 vanished over the Indian Ocean en route from Kuala Lumpur to Beijing, the marine robotics company that located Sir Ernest Shackleton's Endurance is preparing to resume its hunt for the missing Boeing 777. Ocean Infinity, a UK and US-based seabed survey firm, began searching a 15,000 sq km priority area in the Indian Ocean in February but called off the expedition in April after 22 days due to poor weather conditions. The company plans to resume operations on December 30 for 55 days under a $70 million "no find, no fee" contract from the Malaysian government. The company has already covered nearly 10,000 sq km and intends to search another 25,000 sq km. Richard Godfrey, an independent aviation investigator, estimates Ocean Infinity has spent "tens of millions of dollars" on ships and equipment. "I don't think they're in this for the monetary reward of $70m, because this search is very, very expensive," Godfrey says. "I think they're in this for the achievement and their ability to market themselves as the greatest underwater-search firm in the world because they found MH370." The search relies on Hugin 6000 autonomous underwater vehicles capable of mapping the ocean floor at depths up to 6,000 metres using sonar, laser, and acoustic technology. Each AUV can operate independently for 100 hours before surfacing. The machines carry magnetometers that can detect metal buried under several metres of sediment. The story adds: One of the biggest challenges Ocean Infinity faces is the risk of being very close to the MH370 wreckage and missing it because of difficult terrain or gaps in the survey data. Read more of this story at Slashdot.