flight went down leak this you can deploy four five six of these at a time. put them in with helicopters off small boats. you can cover some ground. even in the heavier seas you request get these operating. they're not tied to the boat. >> and the idea is to map the ocean floor? >> correct. >> how does it do that? >> this has sonar pay load here. it basically side scans sonar you have been covering for several days. it shoots out sound and brings it back. it can take long range pictures. you can find an object like that ship wreck that they found, you can get closer images an idea exactly of what it is. >> how much can it do in one day? >> i probably do eight square nautical miles with this system 20 if you run it 24 hours a day. there is a battery pay load when you shrink down we have to change batteries every 8 hours. >> this is autonomous it does it on its own. you have a joystick?