' , a roughly 110-pound underwater drone with six thrusters, searched the seabed with sidescan sonar and then hovered beside suspicious objects to photograph them, at the REPMUS exercise off Portugal from 31 August to 25 September, Autonoción reports. ' drone boat stayed on the surface above it to help track its position, which drifts underwater without GPS.
says the vehicle can sort and measure objects from the photos on board, so operators receive a list of contacts. The account relies on the two companies' own posts from 1 and 2 October, and no detection accuracy figures are given.
Limits
Company accounts of an exercise; no accuracy data; reported via a secondary outlet.