Intercepting

ddiplock · 05-30-08, 08:30 PM

With it being Mid 1943 now in my campaign, and Allied forces using Radar in earnest now, its very difficult to move into an attack position on the surface without being detected. The problem therein also lies in the ability to know the course of the ships in question, in order to get into an attack position.

Is there a way, when your forced to dive after detecting radar signals, that you can use the hydrophones to plot the course of the target if its the case of a convoy or a task force who's radar you've detected?

I've come across several task forces and convoys, but i've missed out on each because I don't know which direction they are heading while i'm submerged, and can't plot an intercept course. Why just earlier, I thought I was heading in the right direction to intercept a Task Force after picking up their radar, only to discover I was infact heading the wrong way.

Any help guys?

Cheers

UnderseaLcpl · 05-30-08, 10:35 PM

I assume you have "no map contacts" on, if not you can always plot the limits of the bearing lines to get a good idea.
Personally, when trying to play with the contacts off, I find it best to use the follow contact option under the hydrophone operator's menu. Your goal should be to get a steady 90 degree bearing.
It's of course, much harder then it sounds (no pun intended)
Take the hydrophones and listen for a minute to see if the contact bears port or starboard, alternatively you can have the operator follow nearest contact.
Take off at flank speed in the general direction ahead of their bearing.
Continue to monitor the bearing reports and see if they are getting closer to perpendicular with you. If they are, you're in good shape for an intercept.
If not try altering course farther away to a maximum of 90 degrees away from the bearing. If they still move towards zero you're not going to catch them. Also, leave the periscope up and check it in the bearing direction from time to time.
I use this technique in conjunction with TC but the process can still be tedious.

As far as convoys go your best bet is acting on reports from B-Dienst as they give a general bearing, a map location, and best of all, a speed.

One more thing before I wrap this up, you can always torpedo the escorts, radar be damned. It eliminates you needing to find them....
I'm sure some have seen my responses in various posts for my DD killing technique, if anyone would be interested in a long post with a full explanation please say so and I will make one.

Hope this helps a little.....

Letum · 05-30-08, 10:52 PM

I think it is very important to get at least two visual sightings of the convoy a few
minutes apart, longer apart if possible. The longer the better. Even if it means
exposing your self to detection. Or one good AOB reading, but this is harder to get
than two position plots.

Radar can sometimes be used to get the two accurate position plots, but will also
expose you.

ddiplock · 05-30-08, 10:55 PM

One thing I wonder about is WHEN can they actually detect you with their radar. The way things seem with my radar warning antennae, is that I can detect their emissions, but maybe i'm still outside the range of their radar, so, I end up knowing roughly where they are, before they know I'm near.

I dive pretty quickly after I detect them, and they never take evasive action, this leads me to conclude they haven't detected me, and thus you could further conclude, it can give you a little bit if leeway on the surface to use the diesals to get into position.

The only problem is, you don't know when they have detected you, and could end up ruining the whole thing if you stray into the range of their radar while trying to get into position.

richardphat · 05-30-08, 10:57 PM

In this case try to get snorkel as soon as possible you can catch them up if they are a bit far!And usually a periscope can zoom up to 6x so i guess you would be able to see approximately 3 or 4 km. DD cant detect with their sonar because you are too far from them

ddiplock · 05-30-08, 11:29 PM

Quote:

Originally Posted by richardphat

In this case try to get snorkel as soon as possible you can catch them up if they are a bit far!And usually a periscope can zoom up to 6x so i guess you would be able to see approximately 3 or 4 km. DD cant detect with their sonar because you are too far from them

Yeah that's true. But, its also a bit unrealistic. I do know that in SH3, you can have a Schnorkel and run at flank speed when its up, but in real life, a Uboat was limited to no more than 6 knots with the Shcnorcel extended, else it would break off. lol

rifleman13 · 05-31-08, 01:06 AM

I just saw a convoy course SSW just west of the Bay of Biscay.

When I come to intercept it, I can't see it. When I ordered the crash dive to 70m to check out on the hydrophones, nothing.

What's going on! Are they steaming straight or, just like in real life, zigzagging!

Thnx for any replies!

gAiNiAc · 09-08-08, 02:47 PM

Quote:

Originally Posted by UnderseaLcpl

One more thing before I wrap this up, you can always torpedo the escorts, radar be damned. It eliminates you needing to find them....
I'm sure some have seen my responses in various posts for my DD killing technique, if anyone would be interested in a long post with a full explanation please say so and I will make one.

....

I'm always interested in DD killing techniques............

I'm pretty good but I still find myself crash diving and evading radically at times when I don't nail them..........

Martin

XLjedi · 09-09-08, 08:45 AM

If you don't mind using MoBo, it has a TMA tool for converting hydro bearings to target true course...

You can see how it works here:
http://www.subsim.com/radioroom/showthread.php?t=121929

Just review the "Advanced TMA Help" link. If you're stationary it's pretty easy, if you're moving it's a little trickier.

kylania · 09-09-08, 10:13 AM

Here's an old picture I found on these forums years ago, still works pretty well for me:

XLjedi · 09-09-08, 11:47 AM

Quote:

Originally Posted by kylania

Here's an old picture I found on these forums years ago, still works pretty well for me:

Yes... that works well if you already know the target TC (the black line).

I think OP is looking for ways to determine true course without a map prompt that says "East".

Sandman_28054 · 01-11-09, 02:05 AM

Quote:

Originally Posted by ddiplock

With it being Mid 1943 now in my campaign, and Allied forces using Radar in earnest now, its very difficult to move into an attack position on the surface without being detected. The problem therein also lies in the ability to know the course of the ships in question, in order to get into an attack position.

Is there a way, when your forced to dive after detecting radar signals, that you can use the hydrophones to plot the course of the target if its the case of a convoy or a task force who's radar you've detected?

I've come across several task forces and convoys, but i've missed out on each because I don't know which direction they are heading while i'm submerged, and can't plot an intercept course. Why just earlier, I thought I was heading in the right direction to intercept a Task Force after picking up their radar, only to discover I was infact heading the wrong way.

Any help guys?

Cheers

Perhaps its just me, but what I have done in those situations is to dive as soon as I get the warning of "detecting radar."

I dive to periscope depth, and raise my periscope. Using the "pencil" I will "mark" their position. As somebody said, you need at least two visual observations. When you have these two marks, its easy to plot their course and an intercept.

FIREWALL · 01-11-09, 02:13 AM

A simple way is get them on your hydro and turn into them till your at 0 degrees and see if they go port or starboard or right at ya.

05-30-08, 08:30 PM	#1
ddiplock Samurai Navy Join Date: Jul 2002 Location: Scotland, UK Posts: 552 Downloads: 31 Uploads: 0	Intercepting With it being Mid 1943 now in my campaign, and Allied forces using Radar in earnest now, its very difficult to move into an attack position on the surface without being detected. The problem therein also lies in the ability to know the course of the ships in question, in order to get into an attack position. Is there a way, when your forced to dive after detecting radar signals, that you can use the hydrophones to plot the course of the target if its the case of a convoy or a task force who's radar you've detected? I've come across several task forces and convoys, but i've missed out on each because I don't know which direction they are heading while i'm submerged, and can't plot an intercept course. Why just earlier, I thought I was heading in the right direction to intercept a Task Force after picking up their radar, only to discover I was infact heading the wrong way. Any help guys? Cheers

05-30-08, 10:35 PM	#2
UnderseaLcpl Silent Hunter Join Date: May 2008 Location: Storming the beaches! Posts: 4,254 Downloads: 0 Uploads: 0	I assume you have "no map contacts" on, if not you can always plot the limits of the bearing lines to get a good idea. Personally, when trying to play with the contacts off, I find it best to use the follow contact option under the hydrophone operator's menu. Your goal should be to get a steady 90 degree bearing. It's of course, much harder then it sounds (no pun intended) Take the hydrophones and listen for a minute to see if the contact bears port or starboard, alternatively you can have the operator follow nearest contact. Take off at flank speed in the general direction ahead of their bearing. Continue to monitor the bearing reports and see if they are getting closer to perpendicular with you. If they are, you're in good shape for an intercept. If not try altering course farther away to a maximum of 90 degrees away from the bearing. If they still move towards zero you're not going to catch them. Also, leave the periscope up and check it in the bearing direction from time to time. I use this technique in conjunction with TC but the process can still be tedious. As far as convoys go your best bet is acting on reports from B-Dienst as they give a general bearing, a map location, and best of all, a speed. One more thing before I wrap this up, you can always torpedo the escorts, radar be damned. It eliminates you needing to find them.... I'm sure some have seen my responses in various posts for my DD killing technique, if anyone would be interested in a long post with a full explanation please say so and I will make one. Hope this helps a little..... __________________ I stole this sig from Task Force

05-30-08, 10:52 PM	#3
Letum Navy Seal Join Date: Feb 2005 Location: York - UK Posts: 6,079 Downloads: 43 Uploads: 0	I think it is very important to get at least two visual sightings of the convoy a few minutes apart, longer apart if possible. The longer the better. Even if it means exposing your self to detection. Or one good AOB reading, but this is harder to get than two position plots. Radar can sometimes be used to get the two accurate position plots, but will also expose you. __________________

05-31-08, 01:06 AM	#7
rifleman13 Grey Wolf Join Date: May 2008 Location: Depth-charged to Kingdom Come Posts: 927 Downloads: 28 Uploads: 0	Convoys! I just saw a convoy course SSW just west of the Bay of Biscay. When I come to intercept it, I can't see it. When I ordered the crash dive to 70m to check out on the hydrophones, nothing. What's going on! Are they steaming straight or, just like in real life, zigzagging! Thnx for any replies!

09-09-08, 08:45 AM	#9
XLjedi Ace of the Deep Join Date: Jun 2005 Location: Palm Beach, Florida Posts: 1,243 Downloads: 53 Uploads: 8	If you don't mind using MoBo, it has a TMA tool for converting hydro bearings to target true course... You can see how it works here: http://www.subsim.com/radioroom/showthread.php?t=121929 Just review the "Advanced TMA Help" link. If you're stationary it's pretty easy, if you're moving it's a little trickier. __________________

05-30-08, 10:55 PM	#4
ddiplock Samurai Navy Join Date: Jul 2002 Location: Scotland, UK Posts: 552 Downloads: 31 Uploads: 0	One thing I wonder about is WHEN can they actually detect you with their radar. The way things seem with my radar warning antennae, is that I can detect their emissions, but maybe i'm still outside the range of their radar, so, I end up knowing roughly where they are, before they know I'm near. I dive pretty quickly after I detect them, and they never take evasive action, this leads me to conclude they haven't detected me, and thus you could further conclude, it can give you a little bit if leeway on the surface to use the diesals to get into position. The only problem is, you don't know when they have detected you, and could end up ruining the whole thing if you stray into the range of their radar while trying to get into position.

05-30-08, 10:57 PM	#5
richardphat Seasoned Skipper Join Date: Apr 2008 Location: Canada Posts: 682 Downloads: 17 Uploads: 0	In this case try to get snorkel as soon as possible you can catch them up if they are a bit far!And usually a periscope can zoom up to 6x so i guess you would be able to see approximately 3 or 4 km. DD cant detect with their sonar because you are too far from them

09-09-08, 10:13 AM	#10
kylania Silent Hunter Join Date: Aug 2006 Posts: 3,528 Downloads: 118 Uploads: 0	Here's an old picture I found on these forums years ago, still works pretty well for me: __________________

01-11-09, 02:13 AM	#13
FIREWALL Eternal Patrol Join Date: Mar 2006 Location: CATALINA IS. SO . CAL USA Posts: 10,108 Downloads: 511 Uploads: 0	A simple way is get them on your hydro and turn into them till your at 0 degrees and see if they go port or starboard or right at ya. __________________ RIP FIREWALL I Play GWX. Silent Hunter Who ???