391 containers. so had a lot of top side height to it where the winds and waves could hit it. had 294 trailers and automobiles below deck. so it was heavy, it was weighted down. we also know that the vessel had a list to it meaning it was leaning over about 15 degrees because they had some water intrusion earlier. that just increases the danger of the situation that they were in to be able to survive that type of condition. >> what are the ocean depths in this area and the rurncurrents, they pushing north? >> the depth where we believe the vessel sank is 15,000 feet. so very deep. right now based on our search planning efforts, we think the vessel or survivors could potentially drift to the north. and that's how i've described those debris fields. one is near the last known position but another one is 60 miles to the north of that. that validates when we find all these things it validates our search efforts and we could really hone in on where survivors might be.