Seems to work for me... but then I am in a type II so my active echo is hardly the largest..

Nope Run silenT and SHALLOW.man the hydros and F5 station yourself

Sitting on the bottom gives no benefit at all in both SH3 and GWX :nope:

In real life sitting on the bottom is NOT a guarantee you won't be picked up.

It reduces your signature for passive sonar (hydrophones) as you don't have any engines (or pumps, but pumps aren't modelled in SH3...) running, but it doesn't help you much against active sonar - the sound waves largely pass through the hull and bounce off the inside of the hull - its actually the trapped air pocket which creates the strong return, as mentioned here.

As mentioned on that link, thats how BOLD decoys worked - they create air bubbles which create a sonar return like a submarine.

But in the real world, being too close to the bottom clutters up sonar... giving a skimmer operator lots of ghost targets... same went for being very shallow too..