447, we did about 25 square miles, i m sorry mixed miles in kilometers, 25 square miles every day. that is awfully slower than most people would go. but we wanted to go low and slow so we wouldn t miss anything. so i think you re looking just to get those in one sweep you could do those in a day or two. something like that. that is not enough to make a map, you would want to make a bigger map than just one or two swings. i m thinking a leap to cover that in the area. when you talk about the topography on the valley floor, and the valleys and peaks does the autonomous movement signal that they have proven in the past not to be too reliable. so that is problematic. the other thing is that the depth on the northern part of where the ocean shield has been is deeper than the bluefin-21