Does sitting on the bottom help you at all?

maillemaker · 05-14-07, 03:52 PM

So is there any advantage in bottoming your sub on the bottom and sitting quiet?

Or do they hear you just the same? I would think the asdic would have a hard time differentiating you from the bottom?

DanCanovas · 05-14-07, 04:00 PM

Quote:

Originally Posted by maillemaker

So is there any advantage in bottoming your sub on the bottom and sitting quiet?

Or do they hear you just the same? I would think the asdic would have a hard time differentiating you from the bottom?

in real life yes I think this would work, not in SH3 as far as I'm aware

Penelope_Grey · 05-14-07, 04:03 PM

In my experiences it does work. They cannot pinpoint your exact location, the deeper the bottom is the better, so if for example the bottom is only 30m then chances are they will get you. But if its like 80m+ then you are sorted.

Corsair · 05-14-07, 04:49 PM

Well just happened to sit on the bottom around 85m due to some flooding on board and I can tell you they dropped every can right on my head... boat lost with all hands after 5 patrols.

Will write a hundred times : "Even if it is a beautiful convoy, never attack in shallow waters..."

Penelope_Grey · 05-14-07, 04:53 PM

If you hit the bottom with a bang, that is usually a dead giveaway. You have to set it down gently so not to make a racket.

Chock · 05-14-07, 04:54 PM

As already mentioned, in real life it would probably be a viable tactic, although it probably wouldn't do your hydrophone heads any favours either.

But as far as I'm aware, from the way detection works in SH, it wouldn't make any difference.

Penelope_Grey · 05-14-07, 04:55 PM

Bottoming the boat is moddeled in stock, and I do believe improved with GWX? I read it somewhere here.

jwatch · 05-14-07, 07:48 PM

At 20 km nw of Casablanca got flushed out by a DD and trawler. Took 150+ depth charges but not much damage. After lots of evasive moves and battery power, sat it out on the bottom (60 meters), 0 knots and silent. The escorts lost the scent and gave up after 2 1/2 hours. It worked for me! (That's with GWX for what it's worth)

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.

05-14-07, 03:52 PM	#1
maillemaker Sea Lord Join Date: Apr 2007 Posts: 1,639 Downloads: 75 Uploads: 0	Does sitting on the bottom help you at all? So is there any advantage in bottoming your sub on the bottom and sitting quiet? Or do they hear you just the same? I would think the asdic would have a hard time differentiating you from the bottom?

05-14-07, 04:03 PM	#3
Penelope_Grey Sea Lord Join Date: Feb 2007 Location: UK Posts: 1,893 Downloads: 0 Uploads: 0	In my experiences it does work. They cannot pinpoint your exact location, the deeper the bottom is the better, so if for example the bottom is only 30m then chances are they will get you. But if its like 80m+ then you are sorted. __________________ I SURVIVED THE FIRST EVER SUBSIM WEREWOLF HUNT - and... I actually won the game for the humans too!

05-14-07, 04:49 PM	#4
Corsair Ace of the Deep Join Date: Nov 2006 Location: Toulouse France Posts: 1,140 Downloads: 51 Uploads: 0	Well just happened to sit on the bottom around 85m due to some flooding on board and I can tell you they dropped every can right on my head... boat lost with all hands after 5 patrols. Will write a hundred times : "Even if it is a beautiful convoy, never attack in shallow waters..." __________________ NYGM 3.4A / Living SH3 V5.1 + SH3 Commander

05-14-07, 04:53 PM	#5
Penelope_Grey Sea Lord Join Date: Feb 2007 Location: UK Posts: 1,893 Downloads: 0 Uploads: 0	If you hit the bottom with a bang, that is usually a dead giveaway. You have to set it down gently so not to make a racket. __________________ I SURVIVED THE FIRST EVER SUBSIM WEREWOLF HUNT - and... I actually won the game for the humans too!

05-14-07, 04:55 PM	#7
Penelope_Grey Sea Lord Join Date: Feb 2007 Location: UK Posts: 1,893 Downloads: 0 Uploads: 0	Bottoming the boat is moddeled in stock, and I do believe improved with GWX? I read it somewhere here. __________________ I SURVIVED THE FIRST EVER SUBSIM WEREWOLF HUNT - and... I actually won the game for the humans too!

05-14-07, 04:54 PM	#6
Chock Sea Lord Join Date: May 2005 Location: Under a thermal layer in chilly Olde England Posts: 1,842 Downloads: 0 Uploads: 0	As already mentioned, in real life it would probably be a viable tactic, although it probably wouldn't do your hydrophone heads any favours either. But as far as I'm aware, from the way detection works in SH, it wouldn't make any difference.

05-14-07, 07:48 PM	#8
jwatch Watch Join Date: Sep 2006 Location: Somerset Pennsylvania USA Posts: 27 Downloads: 18 Uploads: 0	Bottomed Out At 20 km nw of Casablanca got flushed out by a DD and trawler. Took 150+ depth charges but not much damage. After lots of evasive moves and battery power, sat it out on the bottom (60 meters), 0 knots and silent. The escorts lost the scent and gave up after 2 1/2 hours. It worked for me! (That's with GWX for what it's worth)

05-19-07, 05:11 AM	#9
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	#10
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	#11
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,525 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, 07:28 AM	#12
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.