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View Full Version : Big problem on torpedo depth setting!!!


DogWalker
11-03-07, 07:53 AM
What is my big problem?

I got RFB 1.31 installad on SH4 1.3, this the only mod installed.

The problem is with the torpedo depth. Identify the ship and let us say the draft is 10 Meters (or equal in feet) and I set torpedo depth to 7-8 M (or equal in feet) and the God damn torpedo runs way deeper than the keel of the boat. No storm or high waves.

Yesterday I tried to sink an small freighter, and I set the torpedo half the boats draft, and it missed. OK I thought, set the torpedo depth to the most shallow I could( setting it more shallow it would need wings to fly through the air) and the God damn torpedo runs way under the boats keel. Same here, no storm or high waves.

What is wrong, and can someone give me some hints or help.


I would like to say that the modders doing a great job, and I thank you for it. Bugs or no bugs, you are still doing a great job. :up:

Snuffy
11-03-07, 08:13 AM
I rarely have a torp go under a target.
I usually set for the shallowest run I can get as well. (Just something about a big hole in the side of a boat and watching the water rush in.)

Only with extremely shallow depth boats or an occasional rough sea do I ever experience a fish running under.

Dunno what yer problem is.

DogWalker
11-03-07, 08:32 AM
Yeah, I can agree on the hole in the side and water rush in experience...:rock:

Thanks for your replay though...:up:


I´m still frustrated and pissed, really annoying to set up a good firing solution and see it never happens. Just like you spending cash on a girl and when it comes to it she´s crossing her legs and say´s Sorry, the store is closed today....:damn: You know what I mean..:yep:

Misfit138
11-03-07, 08:44 AM
It's realism ;)

US had some major problems with their torpedoes especially at the beginning of the war but these were solved as the war progressed

Oh, and to make your situation even worse, RFB 1.31 includes Torpedo Hardcore mod so you get more deeprunners and duds than with the stock game

mookiemookie
11-03-07, 08:50 AM
Now you know exactly how U.S. sub skippers felt in the early part of the war. :sunny:

DogWalker
11-03-07, 09:00 AM
Okey Misfit, if thats the case I can live with it. Good to know it is, feeling better already...:yep:

I just wasted 6 torpedos on an small escort, just one brushed the aft and took away his DC´s..:p

Thanks a lot for your replay...Good Hunting.

Thanks to you too Mookiemookie for the insight...

hyperion2206
11-03-07, 10:25 AM
In RL they found out that the Mark XIV torpedo ran about 11 feet deeper then it should be. So if the devs modded that, then: hats off!:up:

mookiemookie
11-03-07, 10:51 AM
If you care about the exact reason why this was...


On older torpedoe models and early Mark versions, the hydrostatic valve was located in the middle section of the weapon, just behind the warhead. To increase range and speed, this space eventually became filled with additional parts and fuel. As a result, the valve was moved farther aft. This revised layout was originally perceived as a benefit because the depth control mechanism would be closer to the rudders it controlled. Its final location was the tapered section of the torpedo near the tail. No one realized that by placing the valve at a slight angle to the weapon's longitudinal axis, it would cause a corresponding change in how the valve reacted in determining depth control. This variance was minimal under what were considered to be normal testing conditions--shallow depths, weak currents and calm seas.

Further complicating the problem, it was later found that the depth-recording instrument used by the bureau to check the reliability of all hydrostatic valves was miscalibrated. Years later, technicians discovered that the recording instrument and the misplaced valves erred in the same direction and amount. The bureau had been cursed with pure bad luck. Two completely different devices, each responsible for checking the other, deviated identically for vastly different reasons. This unfortunate coincidence explains the bureau's initial testing results and its rejection of Lockwood's evidence. It was a very peculiar and costly twist of fate.

Adding insult to injury, earlier improvements by Commander King, although well-intentioned and initially successful, added to the depth-control riddle. When the additional 115 pounds of TNT were squeezed into the Mark XIV warhead, the exercise heads were not correspondingly altered to reflect the change. The extra explosive had been packed into the warhead by increasing density, so although the water-filled exercise head continued to occupy the same space as the warhead, it no longer had the same weight. Thus, the Bureau of Ordnance was using one version of the Mark XIV for testing and issuing quite a different Mark XIV.

DogWalker
11-03-07, 04:43 PM
Thanks for the info on this. I have just been playing and after getting to know about this it went very well. Purple Heart and Bronze medal..:sunny:

RFB is for the hardcore player, it says so in the text from the modmaker (sorry I forgot your name great man), and I´m not the hardcore player. But I do enjoy this mod very much because I love realism...:up:

jazman
11-03-07, 05:27 PM
If you care about the exact reason why this was...


...
Adding insult to injury, earlier improvements by Commander King, although well-intentioned and initially successful, added to the depth-control riddle. When the additional 115 pounds of TNT were squeezed into the Mark XIV warhead, the exercise heads were not correspondingly altered to reflect the change. The extra explosive had been packed into the warhead by increasing density, so although the water-filled exercise head continued to occupy the same space as the warhead, it no longer had the same weight. Thus, the Bureau of Ordnance was using one version of the Mark XIV for testing and issuing quite a different Mark XIV.

This is probably the case study in poor testing and quality control programs.

Digital_Trucker
11-03-07, 05:34 PM
Yep, the typical government left-hand, right-hand thing. It hasn't changed much since then.

SteamWake
11-03-07, 10:47 PM
The 'real life' reason was the torpedoes were tested with dummy warheads which were much lighter than the real thing... oops.

In the meatime focus on impact detonations and youll be much more sucessful. Magnetic triggers also have a few issues.

apojacks
11-05-07, 12:45 PM
Just as long as you don't sink a truck....

mookiemookie
11-05-07, 12:56 PM
Unless it's a sea truck. :arrgh!:

captiandon
11-05-07, 05:15 PM
Yep one patrol I only had two out of the twenty four that were not duds. I Returned with only one sinking. It is very frustrating but some patrols most of the torpedos are good. Its just a matter of luck. RFB was designed for people like me who were way to successfull on sinking ships. With the stock game I would return from a patrol after sinking 100K tons which was higher then any boat sunk in the entire war. Even with RFB I still sink way to much. I just sunk 80K tons but the game crashed near the end of the patrol.