Does sitting on the bottom help you at all? - Page 2

Crazy Ian · 05-19-07, 05:11 AM

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

zombiewolf · 05-19-07, 05:15 AM

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

Jimbuna · 05-19-07, 05:35 AM

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

johnno74 · 05-19-07, 07:28 AM

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.

Crazy Ian · 05-19-07, 12:16 PM

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..

05-19-07, 05:11 AM	#16
Crazy Ian Torpedoman Join Date: Sep 2002 Location: UK Posts: 115 Downloads: 10 Uploads: 0	Seems to work for me... but then I am in a type II so my active echo is hardly the largest.. __________________ Make tubes 1 and 4 ready in all respects...

05-19-07, 05:15 AM	#17
zombiewolf 中国水兵 Join Date: Apr 2005 Posts: 270 Downloads: 0 Uploads: 0	Nope Run silenT and SHALLOW.man the hydros and F5 station yourself __________________

05-19-07, 05:35 AM	#18
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,645 Downloads: 63 Uploads: 13	Sitting on the bottom gives no benefit at all in both SH3 and GWX __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

05-19-07, 12:16 PM	#20
Crazy Ian Torpedoman Join Date: Sep 2002 Location: UK Posts: 115 Downloads: 10 Uploads: 0	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.. __________________ Make tubes 1 and 4 ready in all respects...

05-19-07, 07:28 AM	#19
johnno74 Planesman Join Date: Nov 2006 Location: Melbourne, Australia Posts: 197 Downloads: 5 Uploads: 0	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.