SUBSIM Radio Room Forums

SUBSIM Radio Room Forums (https://www.subsim.com/radioroom/index.php)
-   Silent Hunter III (https://www.subsim.com/radioroom/forumdisplay.php?f=182)
-   -   How do you sink your enemy convoys ? (https://www.subsim.com/radioroom/showthread.php?t=121561)

Kaleu. Jochen Mohr 09-03-07 08:51 PM

Quote:

Originally Posted by Brag
Enemy convoys? I should hope so. I will not sink friendly ones :88)

you sink neutrals ? :o

Lafferty 09-03-07 09:20 PM

It depends on my mood if i attack a nuetral and if they fire on me first.

Alyebard 09-04-07 03:20 AM

I try to sneak inside the convoy from the front , turn 90º and fire a salvo with AOB 90º, then submerge to 140-150 m, silent and praying not to be detected :-?

abel29a 09-04-07 12:35 PM

For surface attacks I prefer to stay to the front, then move in trying to minimize exposure to front escort - usually moving in at half speed or so. Then I turn 90 degree to convoy course and fire while 500 m or so from nearest column - altough I usually fire at columns further away to give me more time to depart. (Setting the eels to slow if aplicable) I then turn around and move directly away from convoy at high speed to get as much separation as possible before the eels impact. During this manouver I usually also fire my stern at some suitable target. Early war I usually manage to avoid detection, and can quickly reload and overtake the convoy setting up for another attack within the next 1-2 hours.

For submerged attacks - sneak in from the front, set up somewhere in between columns, fire all tubes and then dive in the direction the convoy is headed.

Letum 09-04-07 09:03 PM

I attack ships from the saftey of the land. Less depth charges there.

http://www.b3tards.com/u/57a418c694b...b3/tank_02.jpg

Kaleu. Jochen Mohr 09-04-07 09:18 PM

:rotfl::rotfl::rotfl::rotfl:

Letum 09-04-07 10:22 PM

When there ae no beaches about I atack from the air!
http://www.davidszondy.com/future/Flight/flysub.jpg

Canovaro 09-05-07 03:41 AM

Quote:

Originally Posted by Hitman
Quote:

Sounds interesting. You sure have more time to take a shot this way. What do you do after you have launched the torpedoes? Dive in the same direction? Or take a turn and get out of the direction?
According to BDU doctrine, you should dive in the same direction as the convoy goes or at most head out in a 45º angle for two reasons: 1) Staying inside it makes it more difficult for the DDs to locate you by passive sound, and also maneuvering to throw depth charges is critical (A DD must go fast if he doesn't want to blow his own stern...and doing so in the middle of a scared convoy is a risky affair) 2) That way you will not loose ground and can surface outside, gain position again in a quick run and make another attack.

According to official US doctrine, heading in the opposite direction is better for evasion after the attack

Choose which one you prefer :arrgh!: I personally make that depend on wether I can have reasonable chances of doing another attack (If I have torpedoes and fuel left to keep the chase, if it is late or early war and such...)

P.S: I forgot to add: IN real life Kaleuns would normally head for the convoy submerged, diving deep between periscope exposures (Speed and heading of the convoy should have been determined during the overhaul manouver) and then turn 180º after trespassing the escort screen. Reason: Heading opposite direction of the convoy gets you faster past the screen, plus your heading is better for a quick turn into the blind spot of the DD's baffles if you are located. Then going to peri depth and letting the convoy catch you makes it the easies way to apply corrections in course to ensure proper firing location, plus confirm current convoy speed (By measuring change in bearing of the merchants that go by on your flanks, either by periscope or hydrophones). If the escort is closer and you can't do a 180º turn, or if you want to shoot with better Gyro Angles, then a 90º turn puts you perpendicular to the colums and gives you good shot. I don't like it much however, as the danger of being rammed and the little time you have to set up well your shot is not easy to manage.

Thanks for the info and your thoughts Hitman, I will play with this a little

Maraz 09-05-07 03:53 AM

Quote:

Originally Posted by Hitman
If I have conducted the correct approach I should be between the lines and moving in the same direction of the convoy, albeit slowly (Let them catch me). So I can shoot two salvoes of two torpedos at a 90º and 270º Gyro Angle and hit two targets.

Thanks Hitman, great information from you, as usual. Actually I would not feel very confortable firing with this large gyro angles, I even read (somewhere in SHIII documentation) that in early war gyro angle should be smaller than +- 60. Did you try this kind of shooting in SH3?

Thanks

Maraz

Kpt. Lehmann 09-05-07 05:13 AM

Quote:

Originally Posted by bigboywooly
With torpedos and shells :88)

:rotfl: :rotfl: :rotfl:

Sometimes I throw potatoes.:|\\

Canovaro 09-05-07 07:47 AM

Quote:

Originally Posted by Kpt. Lehmann
Quote:

Originally Posted by bigboywooly
With torpedos and shells :88)

:rotfl: :rotfl: :rotfl:

Sometimes I throw potatoes.:|\\

So that's where those oranges are for.

Kpt. Lehmann 09-06-07 04:25 AM

Quote:

Originally Posted by Canovaro
Quote:

Originally Posted by Kpt. Lehmann
Quote:

Originally Posted by bigboywooly
With torpedos and shells :88)

:rotfl: :rotfl: :rotfl:

Sometimes I throw potatoes.:|\\

So that's where those oranges are for.

No no NO! You have to save the oranges for the U-boat special cocktails!:yep:

Cezbor 09-06-07 08:33 AM

I would stick to official BDU doctrine:lol: , it saves your food:rotfl:

Hitman 09-06-07 10:06 AM

Quote:

Thanks Hitman, great information from you, as usual. Actually I would not feel very confortable firing with this large gyro angles, I even read (somewhere in SHIII documentation) that in early war gyro angle should be smaller than +- 60. Did you try this kind of shooting in SH3?
Yes and it works very well if you have the correct data :up: The main reasons for not using large Gyro Angles were two:

1.- More difficult firing solution, specially more dependant on the distance (You are taking bearings and calculating from the scope or UZO, which is in fact some 40 metres behind the Torpedo tube:88) so the torpedo must have a convergence and cross the line of sight of your UZo/Scope at the distance you estimated your target is. Failiure in distance is then fatal as the torpedo is aimed incorrectly).

2.- Chances of the torpedo not turning accurately, either by mechanical failiure or simply by currents or rough seas deviating it.

90º/270º is however much better than anything intermediate for both the easyness of the firing solution and the tactical possibilities it offers. Specifically, it is a wonderful shot when you miscalculated your approach or the target zigged and you would be too close if you stay in perpendicular course. Changing direction to a paralell course (Either same direction for bow shot or opposite for stern tube shot) ensures the distance to target at the moment of shooting will no longer increase :up:

Spruence M 09-07-07 01:00 PM

Quote:

Originally Posted by Kpt. Lehmann
Quote:

Originally Posted by bigboywooly
With torpedos and shells :88)

:rotfl: :rotfl: :rotfl:

Sometimes I throw potatoes.:|\\

I heard this story! That was incredable.

Spruence M 09-07-07 01:03 PM

I like to get out in front of the Allied Convoy and sit still. During this time I use the ruler and plot tools to locate and plot most of the ships from the convoy. After the lead escort closes within 2000m, or round-a-bouts, I take a look at him normally not raising the scope but as low as possible. I try to torpedo the lead escort first, then I have several minutes at high speed to move in and make a un-molested attack on the convoy.

After getting in, if the convoy doesnt scatter too bad, I use the merchants as screens against the escorts to reload my torpedoes for another attack.

Caution though: This method means certain depth charge.

Kaleu. Jochen Mohr 09-07-07 01:08 PM

Quote:

Originally Posted by Spruence M
Caution though: This method means certain depth charge.

HUZAA! :arrgh!:

Canovaro 09-07-07 01:54 PM

Quote:

Originally Posted by Hitman
Quote:

Thanks Hitman, great information from you, as usual. Actually I would not feel very confortable firing with this large gyro angles, I even read (somewhere in SHIII documentation) that in early war gyro angle should be smaller than +- 60. Did you try this kind of shooting in SH3?
Yes and it works very well if you have the correct data :up: The main reasons for not using large Gyro Angles were two:

1.- More difficult firing solution, specially more dependant on the distance (You are taking bearings and calculating from the scope or UZO, which is in fact some 40 metres behind the Torpedo tube:88) so the torpedo must have a convergence and cross the line of sight of your UZo/Scope at the distance you estimated your target is. Failiure in distance is then fatal as the torpedo is aimed incorrectly).

2.- Chances of the torpedo not turning accurately, either by mechanical failiure or simply by currents or rough seas deviating it.

90º/270º is however much better than anything intermediate for both the easyness of the firing solution and the tactical possibilities it offers. Specifically, it is a wonderful shot when you miscalculated your approach or the target zigged and you would be too close if you stay in perpendicular course. Changing direction to a paralell course (Either same direction for bow shot or opposite for stern tube shot) ensures the distance to target at the moment of shooting will no longer increase :up:

This is especially useful in fog condition when all you have is the hydrophone and a parallel course.

desirableroasted 09-07-07 02:18 PM

A tactic I've used a few times, and one that I am beginning to favor a lot is this.

1) Lying off wayyyy ahead, and about 1000 m outside the track of the outside column (call it Column 1), with bow aimed between what I calculate to be midway between the last ships in Column 1 and the column beside it (Column 2). I set depth at about 80m and speed at 1-2knts, silent running of course...

2) When the lead escort is just past abeam, I go to 3kts and aim for 15m. Once I have some momentum, I will drop to 2kts, but I am aiming to come up about 100 m inside the Column 1 track. Just as I hit about 30 m, I set rudder slightly to port or starboard (as appropriate) so that my bow will begin to come "up the line" of column 2.

3) All torps are set for magnetic, and I have already dialed in for depths of 11. T2s unless it's choppy sea at night.

4) As soon as I can break scope, I take the last big thing I can see down the line on Column 2. Adjust depth of the torp. Go. Give a little rudder if needed (drop the scope, too, if needed), up scope, take the next big thing (or even a small thing if the set up is A1, which it should be). And then again.

5) I stop at 3 shots. I fade to black... I aim low at 3 knots to get some mo' to about 80m, drop to 2knts and either come back dead under Column 1's track or over to Column 3's track, then head out the back.

6) Results are mixed. So far, on 12 3-shot runs, I've scored 0/3 (2), 1/3 (2), 2/3 (7), and 3/3 (1), mostly big ships (pyro, large tanker, large merchant, whaler). By "score" I mean "sink" or "cripple" so that the convoy leaves them.

I know it's conservative, but it puts us on the scoreboard just about every time. On our boat, our watchword is:

2 weeks of "Be more passive" 0 tons, but alive
+ 2 minutes of "Be more aggressive" 33,000 tons, not dead
= 33,000 tons, alive

PS: I'm doing this AFTER T2s become reliable, and am using GWX 1.03.
PPS: I'm not very slavish about the gyro angles... as long as I am within 330-30 degrees, I consider the shot "takeable", though I wait if I can.
PPPS: Sorry... one more key detail..... detection rates are high, but (my) escapes are good. On 12 runs, I've been pinged on 8, DC'd on the same 8, but, running low, slow, and "I belong here", have taken only "fender benders" for damage. But this is all pre-May 1942, so I know this won't last.

danurve 09-17-07 10:02 AM

I've found a new method that requires no munitions.

I just attach a picture of hillary to the attack periscope, most free/allied shipping self destructs.

Be forwarned however Russian ships, at the time being communists will be attracted to you like flies.


All times are GMT -5. The time now is 01:36 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright © 1995- 2025 Subsim®
"Subsim" is a registered trademark, all rights reserved.