Sonar on Uboats?

sirbum69 · 04-15-10, 10:05 AM

So ive searched and cant seem to find a answer, Question is in SH4 we had sonar..Was very easy to plot baddies on the map with map contacts off cause i could just get the range and place a mark in there direction where the range was..

But i have no sonar to do that...There is a key under the sonar man to check range with sonar, but its greyed out...

So did Uboats not have sonar, or do i have to wait until later in the game to get it...Cause right now its dam impossible for me to plot them on map...Even with contacts on lol, cause they still dont show when they are Long range...

I really want to try and play the game as realistic as i can, so i dont want to use map contacts and i want to try and do it with TDC, but man i keep missing the sound contacts that they do give me, cause ive plotted them wrong

mcarlsonus · 04-15-10, 10:20 AM

I'm assuming you're referring to active sonar: audible "pinging" to get target range. Don't believe this is in this game, but it's a good question.

kylania · 04-15-10, 10:36 AM

Quote:

Originally Posted by sirbum69

I really want to try and play the game as realistic as i can, so i dont want to use map contacts and i want to try and do it with TDC, but man i keep missing the sound contacts that they do give me, cause ive plotted them wrong

http://www.subsim.com/radioroom/showthread.php?t=167351

You can plot a contact's course, position and speed using passive hyrdophone tracking.

It's a lot safer than actively pinging them, alerting them to your presence.

robbo180265 · 04-15-10, 10:39 AM

Taken from a forum in Uboat.net. With thanks to Sniper (who wrote it)

German U-boats of WW2 DID have active sonar..they just did not use it and it was eventually removed.

The type VII was fitted with active sonar in the mid 40 time frame.It was a revolving
transducer like the KBT mount seen later in the war.The reasons that it was removed later on and that we don't hear of U-boats using active sonar are as follows:

1. It was a 'trainable' device not an 'array' like the GHG so it had relatively short range...only 3000-4000 meters under good conditions. The passive GHG could hear an individual ship at around 20000 meters and a convoy at approx 100nm
(again these are under ideal conditions). An active 'array' would have given much greater range (probably out to 15000 meters).

2. Allied escorts could hear the active pulses and home in on them from well beyond the sonars effective range.

3. It was not as sophisticated as the 'Neiubling' system on the type XXI and was not linked into the U-boats fire control system like the 'Neiubling' was. This meant that it took a relatively long time to figure out a targets course/speed etc using the sonar...all the time transmitting and letting the escorts know where you are.
The XXI soanar needed as few as 3 pings to determine target speed/course which was fed directley to the fire control system allowing the tactic called 'deep directed shooting'. The tactics which where devised by test group 'Sultan' for the XXI were these. The target would be located at long range by the GHG and teh U-boat positioned on a interceot course. As the strength of the contact on the GHG
increased and the GHG operator thought that the target was withing 10000 meters the 'Neiubling' was switched on to 'listen only' mode. The system had a cathode ray screen to diplay all contacts and in 'listen only' mode it displayed ocean noise. When the propellor noise of the ship/s could be seen on the screen (as a regular series of spikes across the bottom of the screen - the beats of the propellor blades - the set was switched to 'active' and several pulses sent out.

4. As the allies increasingly used radar to spot surfaced U-boats the U-boats started carrying radar warning devices. The associated electronics cabinets had to go somewhere and the space used by the little used active sonar seemed like the ideal place.

I hope this helps..

orangehat44 · 04-15-10, 10:40 AM

Didnt think uboats had active sonar, for contacts. Depth under keel yes.

ddrgn · 04-15-10, 10:51 AM

They certainly did....

Uboataces has a nice read up of the 2 configurations they had by the end of the war.

http://www.uboataces.com/hydrophones.shtml

04-15-10, 10:05 AM	#1
sirbum69 Navy Dude Join Date: Feb 2010 Posts: 178 Downloads: 127 Uploads: 0	Sonar on Uboats? So ive searched and cant seem to find a answer, Question is in SH4 we had sonar..Was very easy to plot baddies on the map with map contacts off cause i could just get the range and place a mark in there direction where the range was.. But i have no sonar to do that...There is a key under the sonar man to check range with sonar, but its greyed out... So did Uboats not have sonar, or do i have to wait until later in the game to get it...Cause right now its dam impossible for me to plot them on map...Even with contacts on lol, cause they still dont show when they are Long range... I really want to try and play the game as realistic as i can, so i dont want to use map contacts and i want to try and do it with TDC, but man i keep missing the sound contacts that they do give me, cause ive plotted them wrong

04-15-10, 10:51 AM	#6
ddrgn Korvettenkapitän Join Date: Apr 2005 Location: Toronto Posts: 918 Downloads: 362 Uploads: 30	They certainly did.... Uboataces has a nice read up of the 2 configurations they had by the end of the war. http://www.uboataces.com/hydrophones.shtml __________________ ddrgn mods: http://www.subsim.com/radioroom/member.php?u=217261

04-15-10, 10:20 AM	#2
mcarlsonus Weps Join Date: Aug 2006 Posts: 362 Downloads: 13 Uploads: 0	I'm assuming you're referring to active sonar: audible "pinging" to get target range. Don't believe this is in this game, but it's a good question.

04-15-10, 10:39 AM	#4
robbo180265 Admiral Join Date: Oct 2006 Location: Brighton, England.Party capital of the south Posts: 2,255 Downloads: 126 Uploads: 0	Taken from a forum in Uboat.net. With thanks to Sniper (who wrote it) German U-boats of WW2 DID have active sonar..they just did not use it and it was eventually removed. The type VII was fitted with active sonar in the mid 40 time frame.It was a revolving transducer like the KBT mount seen later in the war.The reasons that it was removed later on and that we don't hear of U-boats using active sonar are as follows: 1. It was a 'trainable' device not an 'array' like the GHG so it had relatively short range...only 3000-4000 meters under good conditions. The passive GHG could hear an individual ship at around 20000 meters and a convoy at approx 100nm (again these are under ideal conditions). An active 'array' would have given much greater range (probably out to 15000 meters). 2. Allied escorts could hear the active pulses and home in on them from well beyond the sonars effective range. 3. It was not as sophisticated as the 'Neiubling' system on the type XXI and was not linked into the U-boats fire control system like the 'Neiubling' was. This meant that it took a relatively long time to figure out a targets course/speed etc using the sonar...all the time transmitting and letting the escorts know where you are. The XXI soanar needed as few as 3 pings to determine target speed/course which was fed directley to the fire control system allowing the tactic called 'deep directed shooting'. The tactics which where devised by test group 'Sultan' for the XXI were these. The target would be located at long range by the GHG and teh U-boat positioned on a interceot course. As the strength of the contact on the GHG increased and the GHG operator thought that the target was withing 10000 meters the 'Neiubling' was switched on to 'listen only' mode. The system had a cathode ray screen to diplay all contacts and in 'listen only' mode it displayed ocean noise. When the propellor noise of the ship/s could be seen on the screen (as a regular series of spikes across the bottom of the screen - the beats of the propellor blades - the set was switched to 'active' and several pulses sent out. 4. As the allies increasingly used radar to spot surfaced U-boats the U-boats started carrying radar warning devices. The associated electronics cabinets had to go somewhere and the space used by the little used active sonar seemed like the ideal place. I hope this helps..

04-15-10, 10:40 AM	#5
orangehat44 A-ganger Join Date: Mar 2010 Posts: 80 Downloads: 48 Uploads: 0	Didnt think uboats had active sonar, for contacts. Depth under keel yes.