got the ocean floor was somewhere around 4200-4400 meters. by the time it got to 4500, an automatic switch basically fled inside the submersible and told it was too deep and came back up to the surface. they spent several hours getting out of the water and downloading what data they collected and they will reprogram and charge the batteries and send it back down in the next few hours to continue its job. >> six hours and data, that is better than nothing. how soon before we know if any of that is useful? >> reporter: they look at it pretty quickly. they can turn that around, using this side scan sonar picks up a map and a lot of people have compared it to an ultrasound. very high definition. it will provide our reading of what is on the bottom and what they are hoping to find is the