Few days, but the pattern changed today. so before the ships were scattered over a large area, looking, we think for the knocking sounds that were picked up. but today they got together into a smaller area about the size of a kilometre. one of the french ships was there too. that was unusual. all coming together. they had two deep diving subs on board. one which belongs to the french ship and another sub which belongs to a canadian ship. they reached the sea bottom and we got the news one had spotted debris. this is the site of the titanic, you know, it is a huge wreck, in two parts, there is an enormous debris field around it. so what they have spotted, it might be nothing, but it could be something. the fact they have tweeted is significant. what we also know is the victor 6,000 had robotic arms