Another funky idea.

[timmy41]

Originally Posted by maillemaker

If the mere THOUGHT of periscopes incites that kind of panic, what an even better reason to have real decoys then!

Especially if you could somehow make them go up and down....

Steve

the noisemakers already have to balance their own buoyancy by the rate of their release, otherwise they would float to the surface or sink down. so im sure it would be possible to have some type of device on it to change its buoyancy in a pattern, it could be powered by the gas escaping itself, or some type of potential energy device like a wound up torque spring.