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The search for the remains of Flight 370 apply the Bluefin-21 modular independent underwater vehicle ( AUV ) . The submersible combs the floor of the ocean with sonar , mapping any objects it finds as it travel along its lookup form .
duration : 16.2 feet ( 5 meters )
Unmanned submersible uses sonar to scan the ocean floor and return a 3D map to the surface.
Weight : 1,650 lbs . ( 750 kilograms )
Maximum fastness : 5 knots
Endurance : 25 hours at 3 gnarl
Deptah rating : 14,763 feet ( 4,500 MB )
The torpedo - shaped Bluefin AUV is programmed with a search pattern with overlap loop topology like that of a lawn lawn mower . The AUV is launched from a ship , then uses Iridium planet to fix its position in three dimensions . Once at the ocean level , the AUV begin scanning with its sonar to create a 3D map .
