Just an idea, conclusions required ;)

[commandosolo2009]

Attention on Deck

Hiya Sailors,

I have been playing SHIV for a while now and I recently had this idea in mind.

Supposedly I receive a report that a Merchant is headed my way straight, we'd both collide head-on if I dont immediately crash dive.

What about If I am to dive to 49 meters, ready and open all tubes, and raise periscope underwater, remain stationary and adjust lightly so that we are both on the opposing bearings( head-on)?


Look

http://img188.imageshack.us/img188/5700/08042010963.jpg (http://img188.imageshack.us/i/08042010963.jpg/)



http://img192.imageshack.us/img192/2416/08042010966n.jpg (http://img192.imageshack.us/i/08042010966n.jpg/)




Now, I have few questions in mind;

In the first image,

What time torpedo takes to go from point A to point B on the first image, if the torp is a G7e (T3)/ G7es (Falke)?
(Depth = 49 meters, shallowest depth achieved by settings = 1.1 meters)

Dont do mathematic, cuz I could have done it myself.

I want the real thing..

Is it possible to get a magnetic pistol to work at point B?

would the torp blast give an effect similar to under keel detonation (magnetic) ??


In the second image

at what distance in meters would I be able to see the vessels keel when submerged??

Sorry for the exam type questions.

Anyways, skippers, board your vessels and try this out, let me know how it turns out.

Torp loadout is optional, but for consistent feedback (control), please use specified torpedoes (G7e/G7es Falke)

Thanks..:rock::rock::salute::salute::salute:

[CraBBMan]

You cant fire a torpedo from 49m, not sure if you can either open tubes at that depth. You need to be at periscope depth.

:salute:

[commandosolo2009]

You cant fire a torpedo from 49m, not sure if you can either open tubes at that depth. You need to be at periscope depth.

:salute:

In a type XVIII I could.. Tried it by pressing Q as we ent deeper, the one time I had

"too deep to launch torpedos, sir" was when I reached 50 meters.

so, 49 meters in XVIII boat is the launch depth...

[alexradu89]

The maximum depth at which torpedoes could be launched from Uboats is 15, and some maybe 20 meters, 49-50 meters is no way possible. I'm guessing that at that depth it would either make the torpedo implode due to pressure, or just mess up the trajectory and everything. You can however open the tubes at pretty much any depth I think. It's the torpedo that counts not the submarine, since both a type VII and a XVIII could launch a G7a G7e etc.

[TH0R]

The maximum depth at which torpedoes could be launched from Uboats is 15, and some maybe 20 meters, 49-50 meters is no way possible. I'm guessing that at that depth it would either make the torpedo implode due to pressure, or just mess up the trajectory and everything. You can however open the tubes at pretty much any depth I think. It's the torpedo that counts not the submarine, since both a type VII and a XVIII could launch a G7a G7e etc.

I hardly believe that the torpedo would implode at 50 meters... The probable reason was the added pressure required to lunch it. ;)

[tomoose]

1. Someone will correct me if I'm wrong but I'm fairly certain that by the time you see a ship's hull in your periscope from underwater you are WAY too close to even use your torpedoes. Even if they did work, you are almost guaranteed to waste at least two torpedoes out of a shot of four unless you converge them which, again, makes no sense and is a waste of your ordnance.

2. Why would you want to set up an attack like this anyway? In the same time it would take you to do this you could manoeuvre left or right and have a beautiful 90-degree shot from your aft tubes. You would just have to sit and wait for the ship to cross your path. In other words why set yourself up to hit a small target (a skinny bow) when you can set up for a large target (a nice fat side of hull)?

3. If you are so close that you have to "crash-dive" then;
a. Your watch crew is doing an extremely lousy job at spotting
targets, and
b. The merchant will NOT be continuing straight towards you
anyway but will be zig-zagging rendering a nose-on shot both
impractical and that much harder.

4. In other words it would appear to be an extremely poor tactical choice for an attack.:-?

[Sailor Steve]

1. In real life, as pointed out, from 49 meters (160 feet) you can't see anything through a periscope.

2. As pointed out in another thread, if you raised the periscope at that depth there is a good chance (in real life, of course) that the pressure would force the seals in and flood the boat.

[Bothersome]

Love the pics by the way, I should print them out and put them on the fridge. :up:

The torpedoes need 400 meters to arm themselves, so what you are trying usually won't work. By the time you can see the ship, it's closer than 400 meters.

From what I gather from the pics, you got a destroyer bearing down on you and you want to do an underwater "down the throat" shot. You want to already be at 49 meters so you "hope" it can't get you or you get it first. But that's a very bad plan.

I use a down the throat shot a lot in my games. More than my crew feels comfortable with and have had several attempts of removing me from command because of it too.

I personally don't like to give up the surface. I dive to periscope and do all I can to stay there. Fighting off all who challenge my right to stay at periscope depth. It's like playing chicken. Don't Panic.

Every now and then I get a smart one that wants to serpentine his way in. Bastards they are. I have found "back emergency" with full rudder a more "lucky" escape plan though. Which is where I get the mutiny activities later. :hmmm:

[Diopos]

The original question was about a merchant as target, right?
In the situation you describe I would wait for the target to pass over me wait until I can't see him any more (as a rough "indicator" for torp arming distance) and then shoot the accoustic (aft tube). In any case a 0/180 bearing- 0/180 AOB situation should be avoided. A small angle between the topr's initial track and the target's path would probably assist "homing in".

[Jten]

Down the throat (submarine tactic)


Down the throat typically refers a term used by United States Submariners in World War II, in reference to a type of torpedo attack angle used usually against attacking destroyers or anti-submarine craft. A "down the throat" shot would be any shot in which the target craft was presenting a 0-degree bow angle (AOB), or simply put, it was heading straight toward the submarine. These were extremely difficult setups from which to launch torpedoes, and usually it was only the skilled or desperate boat skippers who attempted such attacks. Further complications with the "down the throat" shot were the gyroscope issues that plagued US torpedoes,as well as the rapidly diminishing range of the target that could prevent arming of the torpedo.

It was first used by Pompano (SS-181) under the command of Lieutenant Commander Lew Parks during the boat's first war patrol, although it did not hit.

Summer of 1943, Dudley “Mush” Morton commanding USS Wahoo. was ordered to conduct a daylight reconnaissance vicinity Wewak Harbor, New Guinea.” After consulting with his officers for their interpretation of “reconnaissance,” Morton made his intentions clear. He decided it meant enter the harbor, submerged, and sink as many enemy ships as possible. Upon conducting a periscope survey of an inlet for which he had no official charts, he detected a Japanese Shiratsuyu-class destroyer apparently at anchor. He commenced firing a salvo of bow torpedoes only to discover that the destroyer was actually underway and his torpedoes would miss astern. He fired his last bow torpedo at 800 yards range using a “down the throat” shot as the now fully alerted destroyer charged Wahoo’s periscope with intent to ram. Morton obligingly kept the periscope raised to lure the destroyer into the path of his final torpedo. Morton later reported that this torpedo had “blown off the bow” of the destroyer.

During its last patrol, Harder (SS-257) sank an attacking Japanese destroyer with such a shot. Harder's captain, Cdr. S.D. "Sam" Dealey, was awarded a posthumous Medal of Honor for the patrol. Another Medal of Honor was awarded to the captain of Parche (SS-384), Lawson P. "Red" Ramage for a similar shot on a patrol that returned.

Another submarine, which did not return from a patrol but was known to have used a "down-the-throat" shot was Gudgeon (SS-211).

[commandosolo2009]

Thanks for the input everyone, but how about a proof that the 49 meter depth could launch torps???
:up:
http://www.youtube.com/watch?v=YZfErXrvQFI&feature=channel

And special thanks to Jten for the term and the examples...

Here are my conclusions:

A- 49 meters possible to launch in XVIII boat..
B- for the ones I tried, G7es need 400 meters gap in order to be armed..
C- Periscope view of target's keel achievable from 100 meters. Don't know how that affects G7a/ of G7e..


Will try the down the throat approach and upload the vid to Youtube:rock::rock::rock::rock:

[commandosolo2009]

Love the pics by the way, I should print them out and put them on the fridge. :up:

The torpedoes need 400 meters to arm themselves, so what you are trying usually won't work. By the time you can see the ship, it's closer than 400 meters.

From what I gather from the pics, you got a destroyer bearing down on you and you want to do an underwater "down the throat" shot. You want to already be at 49 meters so you "hope" it can't get you or you get it first. But that's a very bad plan.

I use a down the throat shot a lot in my games. More than my crew feels comfortable with and have had several attempts of removing me from command because of it too.

I personally don't like to give up the surface. I dive to periscope and do all I can to stay there. Fighting off all who challenge my right to stay at periscope depth. It's like playing chicken. Don't Panic.

Every now and then I get a smart one that wants to serpentine his way in. Bastards they are. I have found "back emergency" with full rudder a more "lucky" escape plan though. Which is where I get the mutiny activities later. :hmmm:

Thanks for the input, mate. You may put them on the fridge:O::O::O:

[alexradu89]

I see you are using the stock/vanilla SH4+UBM. Unmodded, the game is unrealistic and buggy. It's either a bug that allows you to fire at such a great depth, or simply the torps are set to be launched from a higher depth (which is UNREALISTIC). No one plays stock SH4 you know. Everyone uses mods :up: I'd suggest OM+OMEGU for u-boats

[commandosolo2009]

You cant fire a torpedo from 49m, not sure if you can either open tubes at that depth. You need to be at periscope depth.

:salute:

your USS Pirgo is great.

Hat up to you :salute:

[CraBBMan]

USS PirgoS (my home town old name:D ), Thanks.

Your video is interesting too.
btw try some mega mods, they really improve gameplay, stock game is buggy as alexradu89 mentioned.
Not sure if you can use that kind of attack with them.

:salute:

[kraznyi_oktjabr]

Gentlemen. At my understanding no Type XVIII U-boat were completed in reality. All were cancelled before completion. Could you tell me where you got max torpedo launch depth for this U-boat type?