wanted to see for ourselves what the weather conditions are like. and before i tell you how we were thrown around, because we were thrown around quite a bit on the boat, this was a clear day here. the conditions were considered calm. but you can see from the video just how not calm it was. >> i feel sorry for the guys on the "shield" heading out to the wreck zone because we're at idle. we're running along about 5 knots. those guys are punching this at 15 knots, so every wave is straight over the top. >> reporter: even for a large ship like the "ocean shield"? >> large ship, it will just be over the top at three times the speed we're doing. >> reporter: john, you know, we talked, too, about this equipment, this high-tech equipment that is on the "ocean shield." we've been telling you all about it how this underwater microphone can detect the ping from a black box. but here's the problem, the radius that it can detect is relatively small, and we're heading to a search area that, as you know, is enormous. so, the chances of getting close to the wreckage without any sign