Enemy sonar?

richardphat · 06-12-08, 10:18 PM

Hello folks i dont know much things about sonar. The only thing i know is the device detect accoustic in the water. But how possible...... dds could detect a sub if a machine is stop and which is in silent mod??? In this case there are no echoes made by the submarine. I dont see the relation between them and yet dds detect them............Like in sh3

06-12-08, 10:22 PM

It's part of the problem from the Stock game.
You can't hide on the sea floor and such.
Not realistic, but we are stuck with it.

One thing I have done.
I 'Dumb down' the AI stuff
and JSGME it in for early years.
then remove it later on.

That's a personnal work around that
I'm not totally happy with.
But it works for me at the moment.

Fincuan · 06-12-08, 11:19 PM

Active sonar. It doesn't matter if the sub makes noise or not, it is still a huge chunk of metal and can be located with an active sonar. It's a bit like an underwater radar, only that it uses sound pulses instad of electromagnetic waves. An illustration on how it works

Cheapskate · 06-13-08, 08:09 AM

In theory that's correct. However it would be quite wrong to assume that a sub would always be detected. Many, many factors would influence detection, not least water temperatures.

Coincidentally, was just looking at: http://www.uboat.net/articles/index.html?article=45

Interesting Eh.? This could be one of the reasons why a prominent U-Boat Commander ( I think it was Erich Topp ) wrote in his memoirs that he seldom, if ever, submerged below 30 meters. If so , I wonder what he did in the Winter?? Maybe he hibernated

!

Anyhow, as Privateer says, discussion of this is pretty academic. This sort of stuff isn't modelled in SH3. More's the pity!

Jeff519 · 06-13-08, 08:20 AM

The cold waters of the North Atlantic offer little in the way of thermal inclines compared to the Pacific however.

Cheapskate · 06-13-08, 08:47 AM

Overall, I'm sure your right there, Jeff519 ( and welcome to SH3 forums, BTW

)

There are many areas in the North Sea and, even worse, the Baltic Sea!!, where a submariner couldn't ever expect any comfort from Thermoclines.

However, U-Boats operated in many areas where these distortion effects would have come into play.

Nowhere near as much as the Pacific though, but I think Thermoclines are modelled in SH4??

06-12-08, 10:18 PM	#1
richardphat Seasoned Skipper Join Date: Apr 2008 Location: Canada Posts: 682 Downloads: 17 Uploads: 0	Enemy sonar? Hello folks i dont know much things about sonar. The only thing i know is the device detect accoustic in the water. But how possible...... dds could detect a sub if a machine is stop and which is in silent mod??? In this case there are no echoes made by the submarine. I dont see the relation between them and yet dds detect them............Like in sh3

06-13-08, 08:47 AM	#6
Cheapskate XO Join Date: Apr 2005 Location: Darkest Essex Posts: 403 Downloads: 47 Uploads: 0	Overall, I'm sure your right there, Jeff519 ( and welcome to SH3 forums, BTW ) There are many areas in the North Sea and, even worse, the Baltic Sea!!, where a submariner couldn't ever expect any comfort from Thermoclines. However, U-Boats operated in many areas where these distortion effects would have come into play. Nowhere near as much as the Pacific though, but I think Thermoclines are modelled in SH4?? Last edited by Cheapskate; 06-13-08 at 08:57 AM.

06-12-08, 10:22 PM	#2
Madox58 Stowaway Posts: n/a Downloads: Uploads:	It's part of the problem from the Stock game. You can't hide on the sea floor and such. Not realistic, but we are stuck with it. One thing I have done. I 'Dumb down' the AI stuff and JSGME it in for early years. then remove it later on. That's a personnal work around that I'm not totally happy with. But it works for me at the moment.

06-12-08, 11:19 PM	#3
Fincuan Admiral Join Date: Aug 2007 Location: Suomi, sauna, puukko, perkele Posts: 2,346 Downloads: 39 Uploads: 0	Active sonar. It doesn't matter if the sub makes noise or not, it is still a huge chunk of metal and can be located with an active sonar. It's a bit like an underwater radar, only that it uses sound pulses instad of electromagnetic waves. An illustration on how it works

06-13-08, 08:09 AM	#4
Cheapskate XO Join Date: Apr 2005 Location: Darkest Essex Posts: 403 Downloads: 47 Uploads: 0	In theory that's correct. However it would be quite wrong to assume that a sub would always be detected. Many, many factors would influence detection, not least water temperatures. Coincidentally, was just looking at: http://www.uboat.net/articles/index.html?article=45 Interesting Eh.? This could be one of the reasons why a prominent U-Boat Commander ( I think it was Erich Topp ) wrote in his memoirs that he seldom, if ever, submerged below 30 meters. If so , I wonder what he did in the Winter?? Maybe he hibernated ! Anyhow, as Privateer says, discussion of this is pretty academic. This sort of stuff isn't modelled in SH3. More's the pity!

06-13-08, 08:20 AM	#5
Jeff519 Nub Join Date: Jun 2008 Posts: 3 Downloads: 0 Uploads: 0	The cold waters of the North Atlantic offer little in the way of thermal inclines compared to the Pacific however.