Ouch !

[ichso]

Originally Posted by Admiral8Q

Sorry about my cynicism, but that thing looks pretty useless. Why would you drop a swarm of these things on a submarine's (U-Boat's) exact position if you can detect them already? The ambient noise of the machinery within the sub would probably make more noise. It's not very descriptive in this video either. Dose it have a little motor and battery in it? Or does it rely on the current of the water moving around the hull. I think it was one of those things that were tried and failed.

Funny idea though...

Why currents and floating around ? If it got attached it would just stick to the sub and make constant noises, no motor or anything needed for that. Just the constant movements of the water, especially when the submarine is moving too, which it would be when submerged to keep depth.

Also, if you got a contact with the sub once it doesn't mean that you can keep it or easily get it again after losing it. If a submarine can sneak away because it turns its narrow side towards you (the DD) than you might not be successful with ASDIC while you also can't hear it.
I think submarines could be *very* quiet if they had to. But this thing made a sound like hitting with a wrench on a steel bar attached to the hull inside the submarine. I don't know how loud this is compared to the usual ambient sound of crew and boat but nobody would have dared to make sounds that loud while submerged and being persued by a DD.

The only thing that makes me wonder is how exactly these things where supposed to get stuck on the submarine. Magnetism ? Glue ? Suction Pads ? Anything even more ridiculous ?