Crush Depth

[mike_espo]

I was breaking in my crew in my type IID. I see that Operational depth is listed as 125m, 175m max.

During a drill, I dove to 150+ started taking damage, I then ordered the Chief to 90m. Kept taking damage....until I was destroyed by pressure! :o :cry: :cry:

My question is: I thought that a boat could go beyond its test depth by a greater margin than is modelled..

Any thoughts?

thanks

[CCIP]

The 175 max is crush depth, not test depth. I believe all early-war U-boats technically had a test depth of only 100m.

The 'crush depth' itself is a very difficult thing to define, because there wasn't a way of finding it out exactly unless Germany would be dumb enough to waste one of their few precious boats to see how far down it would get crushed. The only ones who knew the exact crush depth for a boat were the crews unfortunate enough to reach it, and I don't think any of them came back to tell about it...

Since patch 1.4, Type II's should start taking damage at 157m. If you go up fast (blow ballast), you may well save it. The Type II is understandably more fragile than the other boats, because unlike all other ones it only has a single hull.

[Tikigod]

you sure you weren't damaged? if your hull integrety is less then 100% it will decrease the limit you have as far as crush depth.....the default sh3 has been modeled that if you have say 10-20% hull integrety if you dive 5-20 meters your hull will collapse....as opposed to its normal crush expectancy. you can also change and modify its values using time traveler's crush depth tool: http://www.delraydepot.com/tt/sh3.htm#crushdepth It will allow you to adjust the depths of each sub to realistic values.....and randomize the %'s to give you that uncertainty feeling....as the true crush depth is not really known for each uboat.....the default game has all subs crush depths relatively the same...and timetraveler's tool reallyh helps correct this. He even includes a guild at bottom of tool on average real world figures taken from different sources.

[Redwine]

I was breaking in my crew in my type IID. I see that Operational depth is listed as 125m, 175m max.

During a drill, I dove to 150+ started taking damage, I then ordered the Chief to 90m. Kept taking damage....until I was destroyed by pressure! :o :cry: :cry:

My question is: I thought that a boat could go beyond its test depth by a greater margin than is modelled..

Any thoughts?

thanks

Many fonts ensure crush depths fro uboats very far than modelled in the game from the box.

There is a mod, Crush Depth Mod from TimeTraveller, wich lets you to tweak many setting of the uboat, one of them is the crush depths, there are recomended values in the program, ....it must to be used together with captain America's 400m Depth gauge, due the original gauges become useless if you aply the TimeTraveller mod.

:up:

[mike_espo]

Yep... :cry: just lost another "Kanoe" this time at 165m...took damage, bulbs bursting.....lights going out...real cool!....then death....

Im gonna try downloading that timetravler mod....will it go on over 1.4?

[Tikigod]

its not a mod its a tool so it will go over any version...its a seperate program that you run to edit main files of submarines....so you dont have to go in and manully edit each text file using notepad.

[Rhodes]

I think that the game gives some sort of "subjective" depth to the sub's. Wen I was in my first campain, I enconter 5 destroyers just escorting noting. I was able to evade 3 but the other 2 were my doom, and the ship went to 315m before being destroyed.
My last campain I was damage by a merchant and latter when diving to evade aircraft(my doom again) the boat just whent to 80 m and then Kaput...
Oh my hangover...its killing me, I don't know how the crew of the U-96 hold...(little Das Boot reference...)

[Tonnage_Ace]

In Wikipedia:

http://en.wikipedia.org/wiki/Type_VII_U-boat

It says that the VIIC/42 had a maximum depth of 270m but then in the manual for SH3 it says 350m, the deepest in the game. So which is it? I've never tried 350m in a VIIC/42 but maybe one of you can test.

I'm going to try Timetraveller's mod to change the depths but is Captain America's 400m depth gauge compatible with Bordinstrumente 1.0?

[Redwine]

In Wikipedia:

http://en.wikipedia.org/wiki/Type_VII_U-boat

It says that the VIIC/42 had a maximum depth of 270m but then in the manual for SH3 it says 350m, the deepest in the game. So which is it? I've never tried 350m in a VIIC/42 but maybe one of you can test.

I'm going to try Timetraveller's mod to change the depths but is Captain America's 400m depth gauge compatible with Bordinstrumente 1.0?

There was a long discusion on this, the matter is the maximun operative depth is not...the crush depth.

It is a depth intended to preserve the hull life from structural fatigue.

How can i explains in my bad english, imagine you have a sub .... you launcha hull empty of crew in a depth sea and you found it was destroyed, crushed at 500m.

Then the enginner determine a max operative depth of 300m....

Why for ? Because if you never dive under 300m your hull life will be in example 2000 dives.

But if you dive at 500m often, your hull be stressed, then the 500m value will drop down, and become 450m, and later 400m.

Finally after 500 dives just a 1/4 of the 2000 dives life...... your hull must to be scluted because it is dangerous.

Max operative depth is small than crush depth.

But i think so the original from the box crush depths in this game was due to the some unaccuracy of DDs to hunt you at bigger depths.

This was discovered when TimeTraveller made its Crush Depth program, when the people go to depth the DDs become unaccurate.

Some people decide to increase depth charges fall speeds to solve it.

I think so, instead to fix this AI problem, the developers decide to limit the sub depths.


About TimeTraveller Crush Depth, and Captain America's 400m Depth Gauges, and Boardintrumente 1.0........

You must to compatibilize them..... after apply Crush Depth modificationa and 400m Depth gauge modifications, if you want the Boardinstrumente textures, you need to use photoshop or similar to add 400m depth gauge textures to Boardintrumente textures.

I made that, plus i add the oxid textures from anohter mod, and fix some of the dive plane problems, but it is too mush big to send it to you.......you must to do it yourself.

:up:

[mike_espo]

I am just happy with time traveler's mod...now their is an uncertanty with crush depth.... :know: :up:

It can be customized also :rock:

[Khayman]

I am just happy with time traveler's mod...now their is an uncertanty with crush depth.... :know: :up:

It can be customized also :rock:

I downloaded both mods and changed the crush depth of my IXC to 275 metres and chose "Don't randomize" and "Save changes" I attacked a conovy, then went deep to evade the escorts. "I think I'll go to 260m, seeing as my max crush depth is now 275m and my hull integrity is 100%".

The escorts didn't even get close to me, but I thought I'd still creep away at that depth. I advanced time and I died. My sub was crushed because I went too deep even though I never strayed from 260m :huh:

So be careful! :D

[scandium]

I am just happy with time traveler's mod...now their is an uncertanty with crush depth.... :know: :up:

It can be customized also :rock:

I downloaded both mods and changed the crush depth of my IXC to 275 metres and chose "Don't randomize" and "Save changes" I attacked a conovy, then went deep to evade the escorts. "I think I'll go to 260m, seeing as my max crush depth is now 275m and my hull integrity is 100%".

The escorts didn't even get close to me, but I thought I'd still creep away at that depth. I advanced time and I died. My sub was crushed because I went too deep even though I never strayed from 260m :huh:

So be careful! :D

There's an interesting discussion in Das Boot (the book) about a U-boat's need for increasing amounts of speed the deeper it goes in order to avoid "sinking". Its kind of like a plane needing speed maintain altitude (and more speed to climb). I can't remember the details of the discussion, nor do I know anything of the physics involved or even if the game models it; but I wonder if, at whatever speed you were moving at you slowly (or rapidly in TC) lost depth and reached crush depth without knowing it due to this "sinking" effect at extreme depths.

[Khayman]

There's an interesting discussion in Das Boot (the book) about a U-boat's need for increasing amounts of speed the deeper it goes in order to avoid "sinking". Its kind of like a plane needing speed maintain altitude (and more speed to climb). I can't remember the details of the discussion, nor do I know anything of the physics involved or even if the game models it; but I wonder if, at whatever speed you were moving at you slowly (or rapidly in TC) lost depth and reached crush depth without knowing it due to this "sinking" effect at extreme depths.

I saw a discussion about that not long after I posted :oops: :oops:

I was rigged for silent running and going ahead slow. Perhaps that was just too slow to maintain depth and when I advanced time I drifted down.

Thanks for answering though :)

[Straydog]

Increased depth = increased pressure on the hull which decreases the hull displacement thereby reducing bouyancy. Sub tends to sink. (Remember the string in Das Boot?) :o

[jimmie]

I am just happy with time traveler's mod...now their is an uncertanty with crush depth.... :know: :up:

It can be customized also :rock:

I downloaded both mods and changed the crush depth of my IXC to 275 metres and chose "Don't randomize" and "Save changes" I attacked a conovy, then went deep to evade the escorts. "I think I'll go to 260m, seeing as my max crush depth is now 275m and my hull integrity is 100%".

The escorts didn't even get close to me, but I thought I'd still creep away at that depth. I advanced time and I died. My sub was crushed because I went too deep even though I never strayed from 260m :huh:

So be careful! :D

There's an interesting discussion in Das Boot (the book) about a U-boat's need for increasing amounts of speed the deeper it goes in order to avoid "sinking". Its kind of like a plane needing speed maintain altitude (and more speed to climb). I can't remember the details of the discussion, nor do I know anything of the physics involved or even if the game models it; but I wonder if, at whatever speed you were moving at you slowly (or rapidly in TC) lost depth and reached crush depth without knowing it due to this "sinking" effect at extreme depths.
this is not the case in SH3.

[VonHelsching]

This IS modelled in SH3. Try maintaining depth with 1-2 knots in 200 m.

[mike_espo]

This IS modelled in SH3. Try maintaining depth with 1-2 knots in 200 m.

I have not noticed this behavior at all :hmm: I am driving the type II, but I have no problem keeping depth at all stop.... depth is between 50 and 100m...

[Khayman]

I saw a documentary on WW1 and WW2 subs, and a British submariner in WW1 found that he could park his boat submerged just above a heavily salted layer of water and there was no need for any forward speed at all. Helped rest the crew and save battery power.

I usually travel at 50m and ahead slow when the weather is so bad that surface travel is a joke. The boat keeps that depth fine. But it seems there is some debate as to whether you need to increase the speed for increased depth.

Is it really modelled in SH3?