Quote: If you don’t have any factual information about the dredge, then how did you come to your conclusions?
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I do believe that I said I had no further desire to comment until the worm poop dig occurred. Since you are now asking a specific question, I will answer it.
I watched the video. The suction intake diameter is small and its suction appeared weak. That's why I made the comment would hardly suck the dust out of the living room carpet, or something to that effect. This is not a tool for excavating overburden off a shipwreck. It's small and clearly appears too weak. It may have practical application sucking out sand pockets within a wreck site but that's about it. Try to understand that a fairly large salvage vessel has to be anchored (three or four point moored) over the site to support the dive teams. At this supposed depth of 80 feet, there will be repetitive dives required and a decompression chamber should be on board. So with the necessity of having a vessel on site in a fixed position, there's no problem running either water supply to the bottom to run a real do-business five or six inch venturi dredge or high volume air to run a six or eight inch airlift. So why the big deal over this little portable suction toy? So it appears someone likes to invent expensive toys but has no experience in the shipwreck salvage business. Of course, here again, it's just my opinion.
