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Old 12-03-06, 06:36 PM   #1
AS
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Default Evasive tactics: easier in real life???

Hi all, I´ve been reading about GWX making Destroyers even more deadly and I´ve been reading pages and pages about "evasive tactics" ... now I´ve also read MANY books on real U-Boat warfare (as I´m sure many of you did as well), and here´s what I conclude from my reading:

Authentic U-Boat diaries and reports say little or nothing about "evasive tactics" - it doesn´t seem to be an important issue. Real U-Boat men like Buchheim and Hirschfeld describe being chased and depth-charged like a very ordinary thing. Unlike in Das Boot the crew stayed very calm and wouldn´t freak out and scream and shout etc. (Buchheim, the author of Das Boot, was very angry about these scenes and called them "Hollywood Nonsense"
There´s some historical footage confirming how quietly the crew reacted under attack, too.

What´s more interesting is that real Commanders didn´t have any super-clever evasive "tactics", on the contrary, when you read Buchheim, Hirschfeld, Topp or other eye-witnesses, you are surprised how NAIVE the commanders and the crew often were. When under attack, they usually ran silent and just WAITED while keeping the course. Reportedly, commanders very often just lay on their bed, reading (or at least pretending) or slumbering and nothing much happened. Every now and then they would ask for sonar contacts or dive a little deeper when they were pinged. Destroyers, on the other hand, were very inefficient especially in early war, partly because the crews were not well trained, partly because ASDIC was easily disturbed and inaccurate sometimes.

So what am I getting at? Profound evasive tactics may add to gameplay, but do not really seem to reflect the real thing. In real life being depth charged was a bit like playing Hide and Seek with a lot of good/bad luck involved on both sides. It was a common "tactic" to just sit and wait and keep running silent in one direction. Considering how SLOW U-Boats were at silent running, it wouldn´t have made much sense to change course too often because they would end up staying at the same place forever instead of getting away.

Just something to think about....


Cheers, AS
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Old 12-03-06, 09:06 PM   #2
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Hmmm...this is a good question.... We also have to remember the "human factor" in all this (Well shown by Johann in "das Boot"). this could have hit the uboatcrew aswell as the DD crew. And bad weather could have different impact on different people, making the scenario very different. But again, this is a really interesting question....:hmm:
Good one, AS!
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Old 12-03-06, 09:14 PM   #3
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As deep as i can go and i mean deep(if you have any hull damage then forget it) . I try never to travel in shallow waters . Then i just travel at 1 knot for as long as it takes . Now i am talking pre 1943 . Late war with NYGM in shore campaign mod , i have no idea because i havnt really been there . Regarding GWX i just hope its realistic but scary and fun at the same time .
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Old 12-03-06, 09:33 PM   #4
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I think its also worth noting that both sides during the war, probably from around mod 1941 onwards were both well aware of the fact that ASDIC was ineffective if the target got under a thermocline and one of the main reasons the germans did not develop an effective bathythermograph was that in the Atlantic the thermocline was usually below 500ft-600ft, well below the diving capabilit of most uboats. In the Pacific the layer could sometimes be found within 200ft of the surface.

One thing that annoys the crap out of me is the accuracy of allied sonar/ASDIC when detecting my uboat when I'm in the middle of a convoy going at some speed. In RL under these circumstances they hydrophones are next to useless and even an acitve ping will be very lucky to locate a shallow submarine in amongst all the hull movements in the convoy. Then the escorts come charging in and dropping DC's in amongst the convoy lines. Something a RL DD commander would turn pale at.
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Old 12-03-06, 10:31 PM   #5
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Quote:
Originally Posted by TarJak
One thing that annoys the crap out of me is the accuracy of allied sonar/ASDIC when detecting my uboat when I'm in the middle of a convoy going at some speed. In RL under these circumstances they hydrophones are next to useless and even an acitve ping will be very lucky to locate a shallow submarine in amongst all the hull movements in the convoy. Then the escorts come charging in and dropping DC's in amongst the convoy lines. Something a RL DD commander would turn pale at.
True. i often use the convoys as a "shield" against enemy sonar, but they always seems to find me, no matter what i do..
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Old 12-04-06, 02:39 AM   #6
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totally agree with AS! According to Otto Kretschmer, in early war years the U-boat could approach a convoy on surface (lack of radar) and follow it, then attack even when there were escorts. Kretschmer said, the DDs usually didnt notice him. instead of this, the in-game AI starts just to be "suspicious" when she is near your position. just because you are within short range!!! now tell me how could a DD take suspicion without any sign of your presence? (if you are quiet and no trail on the surface). I think the GWX team should stay focused on things like that, rather then making DDs "deadly"...
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Old 12-04-06, 02:52 AM   #7
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Im not intending to hijack this thread; But what about the tactics used by surface ships when they attack eachother? I looked into this topic before,after my video "the convoy", where german ships encountered a british taskforce. It was IMHO the most stupid tactics i have ever seen, from both partys.
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Old 12-04-06, 03:57 AM   #8
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I can say that the DD's are a bit more Deadly in GWX but not massakistic as people are thinking they will be... But when you get to the business end from mid 42 to 45 you will want to be a bit more carefull when planing a attack. It is possible to attack and get away its just a little bit more challanging.
Anyways that was my 2 cents
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Old 12-04-06, 05:30 AM   #9
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DDs in GWX are very dangerous and accurate in their attacks to U-Boats. That of course doesn't mean that you cannot survive an attack. Obviously it depends on the year as the later in the war you are the more dangerous things will get (as in real life). In GWX you can still outsmart Destroyers, you can still sink them and you can still get away from them but it's a bit more difficult than in GW 1.1a. In my opinion if you do not attack in a guns blazing way and you use clever tactics you can get away most of the times.
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Old 12-04-06, 08:58 AM   #10
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If you look at the Uboat Commanders Handbook, I think they used the KISS principle.

1. Move away from aggressors giving them the smallest possible silhouette.

2. Don't zig zag.
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Old 12-04-06, 10:18 AM   #11
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...which brings us back to my original post. To cut a long story short, I´m just hoping the GWX dev is not to keen on making the most out of the Destroyer AI while history tells us that patience and good luck on the U-Boat´s side was a factor rather than any clever underwater tactics.

Another point is that reportedly U-Boats could get very close to Destroyers at nights without being noticed. I´m just reading an authentic book which states that a big type IX was passed several times by a destroyer within 200m without takijhng any notice.

In another chapter the author reports that a merchant tried to shoot at their U-Boat but couldn´t because they were so close that the merchant´s guns couldn´t take the angle to aim...

Important details which depict a war far different from what we´ve seen so far in subsims.

Cheers, AS
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Old 12-04-06, 02:42 PM   #12
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hi everyone!

been reading this interesting thread and i have a couple of short questions (have recently started playing SH3):

1. is there ANY possibility of attacking a convoy (at night of course) from the surface without being detected?? (how the AI detects you is another story, as was pointed out!)

2. if you are within a convoy at shallow depth, do you still have to make the rig for silent running and keep the speed low, or is the AI unrealistic here too?? ie. how fast can you go before they find you??

3. when apprached by a destroyer on ASDIC, the minimum profile is perpendicular to their course??


many thanks!
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Old 12-04-06, 02:53 PM   #13
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Quote:
Originally Posted by plastik
1. is there ANY possibility of attacking a convoy (at night of course) from the surface without being detected??
Yes you can attack and not be detected if it is total darkness and you manage to avoid the search lights once the fireworks begin. It's a bit difficult though and takes time and experience. In reality U-Boats did attack on the surface at night without being detected.
Quote:
Originally Posted by plastik
2. if you are within a convoy at shallow depth, do you still have to make the rig for silent running and keep the speed low, or is the AI unrealistic here too?? ie. how fast can you go before they find you??
Inside the convoy you can get away without using the silent running, as long as you keep really close to the merchants. Once the DDs start passing between the lines if you are not using silent running they can find you. It's more difficult than in the open sea but they still do. As long as you stay close or even under the merchants you're safe from the charges but they can still use their guns to fire at you.
Quote:
Originally Posted by plastik
3. when apprached by a destroyer on ASDIC, the minimum profile is perpendicular to their course??
No the minimum profile is paralel to their course. That way you give less of a target. If you are though inside their cone of search (their sonar) they usually find you
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many thanks!
You're welcome
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Old 12-04-06, 02:54 PM   #14
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Quote:
Originally Posted by plastik
hi everyone!

been reading this interesting thread and i have a couple of short questions (have recently started playing SH3):

1. is there ANY possibility of attacking a convoy (at night of course) from the surface without being detected?? (how the AI detects you is another story, as was pointed out!)

2. if you are within a convoy at shallow depth, do you still have to make the rig for silent running and keep the speed low, or is the AI unrealistic here too?? ie. how fast can you go before they find you??

3. when apprached by a destroyer on ASDIC, the minimum profile is perpendicular to their course??


many thanks!
Hi mate iam no u boat ace some of the guys from the MP side would call me a mad man but here we go.
1) I have attacked many convoys on the surface in my SH3 career but always fired my torps at a distance of 1000m - 2000m. Some times i get dected but other times not. Its a bit hit and miss. Give it a go and see how you get on. It also depends on what mods you are playing with.

2) When in with the convoy i like to let lose my fish then dive deep to reload. I try to keep to about 4 knt or lower but sometimes you just need to have aburst of speed to get the best angle.

3) yep you are right. Dive deep and remember Bold is your best friend in the later years of the war
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Old 12-04-06, 03:52 PM   #15
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thanks for the answers. i'm not clear as to point 3, though (maybe it was not clear the way i wrote it). when surfaced, it obviously helps to "face" the enemy so you will be harder to spot. when submerged, however, is it also "facing" the enemy (melnibonian) or perpendicular (mr chris)???

not sure if i misunderstood you.

no bold yets (1941). cu!
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