Why are my torpedoes missing?

[Fifi]

In my opinion, target speed is the most important factor to precisely get.
You can have a perfect AOB, if your speed is off by 1 or 2 knots you will miss!
If you have a perfect target speed and you have a slightly wrong AOB, you still can hit! (Within 1000/1500m).
Distance is only necessary to get the chrono impact confirmation, and doesn’t influence on your firing solution. 90% of time i let it to default 500m and always hit.
You can determine target speed via the U-Jadg chrono like they did, but best is to be static for a minute to get the precise result. If you are running 2 knots, you’ll have to add few knots to your result via the special chart (depending what GUI you are using).

[derstosstrupp]

Originally Posted by Fifi

Distance is only necessary to get the chrono impact confirmation, and doesn’t influence on your firing solution.

IF the gyro angle is low. If you have a high gyro angle especially at close range, range needs to be spot on so that the computer can appropriately correct for parallax. That’s very important, because people might get inside a convoy and try to shoot large angled shots and wonder why they are missing.

The relative impacts of speed and AOB, as I mentioned, also highly dependent on the impact angle. At impact angles close to perpendicular, speed is more important, at smaller impact angles like 40°, the solution is more sensitive to AOB errors and speed is more forgiving, because the lateral apparent speed is lower. This is why the U-boat commander’s handbook recommends firing at smaller AOBs if speed is uncertain, or for high speed targets.

[RingMyBell]

I'm very grateful for your various insights and suggestions. I am using your advice and having much more success now.
I try to get close and at a 90 degree angle to the target. Then I lie in wait, then ambush! It's enormous fun.
I have become more aware of the importance of accurately estimating the target's speed.
I have also learned not to rush shots--better to pass and try again later than to rush and miss. Perhaps with more practice I'll get better at quick shots on the fly.
"Silent Hunter" is the perfect name. It really does feel like hunting.
I am still struggling to identify targets correctly. To me, the ship recognition manual is frustrating to use when I'm on high alert preparing for the next shot. However, I am beginning to think that target identification is not very important (except of course for confirming that the target is not from a neutral country). Specifying a torpedo depth of 4m seems to work well and if the range and speed estimates are correct, recognizing the target's identity is not helpful. Or do you disagree?
Thanks again!

[derstosstrupp]

Glad to hear it! And absolutely, the recognition manual is not needed. The real skippers generally used the “recognition manuals” (which were more often just lists of ships with ID numbers/letters, not pictures) to identify ships by their identifying number that had been radioed in the distress signal, or from info they obtained from survivors. They generally did not know the target parameters (height, length, tonnage etc) from a book prior to shooting. They matched the target’s course and speed on the surface to figure out the data, and if that wasn’t possible, they simply estimated. Getting very close mitigates the impact of wrong estimates.

[Fifi]

Originally Posted by derstosstrupp

IF the gyro angle is low. If you have a high gyro angle especially at close range, range needs to be spot on so that the computer can appropriately correct for parallax. That’s very important, because people might get inside a convoy and try to shoot large angled shots and wonder why they are missing.

The relative impacts of speed and AOB, as I mentioned, also highly dependent on the impact angle. At impact angles close to perpendicular, speed is more important, at smaller impact angles like 40°, the solution is more sensitive to AOB errors and speed is more forgiving, because the lateral apparent speed is lower. This is why the U-boat commander’s handbook recommends firing at smaller AOBs if speed is uncertain, or for high speed targets.

Yes right. I always try to fire low giro angle. High giro are not for me

Originally Posted by RingMyBell

I'm very grateful for your various insights and suggestions. I am using your advice and having much more success now.
I try to get close and at a 90 degree angle to the target. Then I lie in wait, then ambush! It's enormous fun.
I have become more aware of the importance of accurately estimating the target's speed.
I have also learned not to rush shots--better to pass and try again later than to rush and miss. Perhaps with more practice I'll get better at quick shots on the fly.
"Silent Hunter" is the perfect name. It really does feel like hunting.
I am still struggling to identify targets correctly. To me, the ship recognition manual is frustrating to use when I'm on high alert preparing for the next shot. However, I am beginning to think that target identification is not very important (except of course for confirming that the target is not from a neutral country). Specifying a torpedo depth of 4m seems to work well and if the range and speed estimates are correct, recognizing the target's identity is not helpful. Or do you disagree?
Thanks again!

I almost never identify target via the book.
Hydro man is telling me slow/medium/fast speed, and i estimate what ship i see so to know the speed i have to read on U-Jagd (up to 100m length, 150m length, 200m length). It helps to see the bow wave too for estimation, and the reports sometimes give the speed too.
I never plot things on map, i always play without map contacts. Visual estimation is my best friend
Then if i decide to shoot magnetic, i always set depth to 6M (90% of ships have >= depth) Furthermore it’s adapted to all kind of waves.
When firing contact, i usually set 5m depth.

[Mad Mardigan]

Originally Posted by Fifi

Then if i decide to shoot magnetic, i always set depth to 6M (90% of ships have >= depth) Furthermore it’s adapted to all kind of waves.
When firing contact, i usually set 5m depth.

One thing I recall Ubi did, back when Silent Hunter: Online, was still about.. was the impact depth was preset to 1.5 to 2 meters depth. I generally went with that, when rolling with SH3 & will explain the reasoning.

As it is, that depth, with the damages caused upon impact & detonation, tears a gash in the side of the ship. That hole, (with the ship being 'gutted' as it were) puts that damages at the greatest spot for the water to then flood in. The more impact det's there are, the faster the ship floods. That's barring your running into torp issues, which is.. well known that the Kriegsmarine dealt with early on & in pretty vast numbers, as I recall. Their abysmal dud rate, was just as bad, if not worse.. even given that they for the most part, again.. as I recall, solved their issues for the most part, earlier on than the U.S. fleetboat side did.

If I am remembering it correctly.. the Kriegsmarine, figured out & eliminated about 85-90% of issues with torps.. I believe & did so, around 6 months to a year in vs the Fleet boats arm, on the U.S. side, with impact issues after a year & a half (and not sure about timewise on the mag det issues... I admit, it has been a bit since I even looked at the info on this.. so, I may be a scootch off here.. just, don't shoot or keel haul Me, if I am.. ) to 2 years into the war. Basic upshot is.. the U.S. skippers, dealt with the frustration, disappointment & heart break of duds, for far longer than the enemy did..

Now, as to setting up for mag dat & the ever lovely recog manual... unless I am mistaken, they did have the books.. and on some to most, I believe they did have some info as to ship's keel depth.. NOT on all of them, mind you.. but I believe they did. For the ones they didn't.. am sure they did manage to keep up with depth settings.. & notated what worked & what didn't when it came to those settings.. when they had a couple of good mag det hits & kills.. they would keep that info, so as to use it again later on... if not even pass it along. My basis for this is... given the fact of their being ordered to track all useful info & kick it back up the chain of command.. & I believe that this sort of info, would fit the bill in those regards. Given that, I believe it just makes sense that they would have done so.

Not that it did them any good, as the war wound down to it's inevitable conclusion, that is... as by near the end, they were getting their aft ends, handed back to them.. as boat losses started to mount atrociously.

At any rate.. as far as mag det settings, I generally go with what the ship was ID'ed as.. then with the keel depth, rated as.. would the add 2 or 3 meters to that depth.. which, for Me.. unless it dudded out, rendered good end results... (again, depending on if there were any duds.. then in that case another torp or more, depending on the target in question.. being sent their way, accordingly.) For rough seas, would adjust the depth a tad deeper, depending on the waves.. also accordingly as I thought it was called for.

But.. that's just My own observations.. as I know opinions, like MPG, varies..

M. M.

[derstosstrupp]

In case anyone is crazy enough to follow the historical guidance on detonator settings…..

https://www.subsim.com/radioroom/sho...&postcount=253