Escort see me without pinging

[Paulebaer1979]

Originally Posted by RussaX37

this things are very good known. but for periscope I dont use it a lot I'm basing on hydrophone so periscope for me is only to find interesting targets and after to select them when firing torpedo but also I'm using periscope at very low height that mean I dont see whole time because of waves so this helps a lot. so they ofthen never see my periscope but for engaging my targets in convoy and escape I'm using different techinq

This is a very good idea. But as i know, within GWX the visible height for the peri is 0 cm. That means, that anyone can see your peri when it´s higher than 1cm above the water. LSH and CcoM changed this to 15 or 20 cm.

The other aspect is your noice. If you not running in absolute silent mode (Schleichfahrt) and with very low speed the escorts can hear you without pinging. In some mods you can see it on nav map - there is a half circle in front of some destroyers. Inside they are able to listen for your sub.

In real live it´s very difficult to find a peri if the sub below drives less than 4kn. I had often the chance to try it out, when i was in the german navy. In these cases i did know the area the sub was inside - i only found the peri in two of ten times. The commander of the sub did use his peri only fpr 20 seconds and lowers it than.

[RussaX37]

Originally Posted by Paulebaer1979

This is a very good idea. But as i know, within GWX the visible height for the peri is 0 cm. That means, that anyone can see your peri when it´s higher than 1cm above the water. LSH and CcoM changed this to 15 or 20 cm.

The other aspect is your noice. If you not running in absolute silent mode (Schleichfahrt) and with very low speed the escorts can hear you without pinging. In some mods you can see it on nav map - there is a half circle in front of some destroyers. Inside they are able to listen for your sub.

In real live it´s very difficult to find a peri if the sub below drives less than 4kn. I had often the chance to try it out, when i was in the german navy. In these cases i did know the area the sub was inside - i only found the peri in two of ten times. The commander of the sub did use his peri only fpr 20 seconds and lowers it than.

Point is to stay undetected with silent running and clever manevours. Also while engaging more then 1 target at the same time priority is to try hit both targets at the same time giving other target no chance to defensive manevour

Exactly point is to use periscope as short as possible when enemy is closer then 4-3km.
It is hard to find but you need to take that there is not only 1 person who is watching for submarines and periscope.

Look at this one sonar escape

[Paulebaer1979]

Originally Posted by RussaX37

Exactly point is to use periscope as short as possible when enemy is closer then 4-3km.
It is hard to find but you need to take that there is not only 1 person who is watching for submarines and periscope.

I had a very good navy-glass (Zeiss) when searching the peri and the sub was in a circle with maximum 2km. 20% is a very well result in this case. The periscopes in the old days were a little bit smaller then now. So in the past the peris were very hard to see if the commander used it quickly.

In the game they start to search for the sub, if they get any reason. If you don´t show your peri or conning tower they do not search you until the first torp hits a target - or someone with passive sonar is able to hear your sub. That´s it. In 9 of 10 cases i´m able to go inside a konvoy with my sub until 1942 (VII or IX). Later it´s nearly impossible. I play LSH5.1 at 82% realism.

[aya]

@RussaX37: Good point mate. I should read more tutorials on hunting with the hydrophone.

@sailor_X: My educated guess is that they've heard you in the first place, maybe, while positioning yourself ahead of the convoy or when you're catching up to them. With that, the escorts will start doing a [paranoid] pattern search around the convoy. I've caught the attention of one destroyer just by approaching them (my mistake) - good thing I sank the poor warship first.

Errr.... someone correct me if I'm wrong.

Nop, there were dozens of times during my careers when my boat happens to be well submerged doing slow speed in 30 meters depth even in silent running while patrolling DD accidently takes course towards me if distance is close enough he spots me no matter what. This is somewhat annoying and is lacking a logical explanation and I usually used to blame imperfect DD sensors of SH3 though.

[Paulebaer1979]

Originally Posted by sailor_X

Nop, there were dozens of times during my careers when my boat happens to be well submerged doing slow speed in 30 meters depth even in silent running while patrolling DD accidently takes course towards me if distance is close enough he spots me no matter what. This is somewhat annoying and is lacking a logical explanation and I usually used to blame imperfect DD sensors of SH3 though.

I`m unable to explain this. When you are deeper than peridepth and run in silent mode the escorts should not be able to find you. I believe that in the sensor-management of the escorts is a small bug. Perhaps someone could check the passiv sonar performance?

[RussaX37]

Originally Posted by Paulebaer1979

I`m unable to explain this. When you are deeper than peridepth and run in silent mode the escorts should not be able to find you. I believe that in the sensor-management of the escorts is a small bug. Perhaps someone could check the passiv sonar performance?

[yuanzheng]

Originally Posted by Paulebaer1979

I had a very good navy-glass (Zeiss) when searching the peri and the sub was in a circle with maximum 2km. 20% is a very well result in this case. The periscopes in the old days were a little bit smaller then now. So in the past the peris were very hard to see if the commander used it quickly.

In the game they start to search for the sub, if they get any reason. If you don´t show your peri or conning tower they do not search you until the first torp hits a target - or someone with passive sonar is able to hear your sub. That´s it. In 9 of 10 cases i´m able to go inside a konvoy with my sub until 1942 (VII or IX). Later it´s nearly impossible. I play LSH5.1 at 82% realism.

I THINK IS VERY GOOD

[Paulebaer1979]

Originally Posted by yuanzheng

I THINK IS VERY GOOD

The glass are nearly perfect. They are only a little bit to heavy - but sailors are strong.

In 2005 i used to play Stock-SH3 online - until they always kicked me from the servers a month later. They thought i was cheating - because i had the best results in the match (type VII (my sub) and XXI (other guys) against konvoy) without being killed. But it was my job being as well as i could - i wasn´t long enough in the lobby to tell that. But i´m not perfekt. My commanding officer was nearly perfekt

[Riccardo1975]

This is the one thing in SH3 that TRULY used to do my head in.

When I first started on SH3 I thought the best way to kill DD's was point blank, i.e 500-800m thanks to steam trails and bad detonators?

So i'm sat at 13m, rigged for silent running early in the pitch black morning somewhere West of Londonderry in 1000+m water, sea maybe 4m/s, waiting for a lone V&W to cross my stern, rubbing my hands in glee. Opened the tube door early, didn't raise the scope too much, not a sound.

Got within 800m and the meter starts flashing red. Great....

How does he spot me? He's going a good speed,(not pinging)and steering a straight course so he's not expecting anyone in the near future.

Now, luckily I use Hsie and Stieblers patches and have DD's pass directly over me all the time. If they dont think your there your safe.

Or I kill them with TIII magnetic shots.

Riccardo