SUBSIM Radio Room Forums - Mod to correct the maximum depth ?

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- - Mod to correct the maximum depth ? (https://www.subsim.com/radioroom/showthread.php?t=166859)

Quote:

Originally Posted by ddrgn (Post 1350432)

Did some testing with this:

Historic approx. crush depth for a type 7A was 200m

Set the multiplier to 1.15 of what you want it to be.

So in my case I want the 7A to start hull damage at 200 so make it 230.

Is there mod for this? Ubisoft have no clue about German subs, all vii clas subs can easily dive near 200 meters, and some over 200 meters.

Its so easy I hardly want to even release a mod for it hehe.

I will though for others, I will make the 7A-C 200 meter crush depth and 7C41 250 meter.

I can base it off this:

http://www.uboataces.com/uboat-type-vii.shtml

determining actual crush depth is not easy since the subs which exceeded it did not come back..:ping:

the deepest recorded dive by a type VII which I have found so far was 250 meters (812 feet) by U-331, a VIIc, right after it sank HMS Barham. I have been reading Blair's books and am now up to spring 43.

It appears such deep dives were rare events. He mentions two dives by other boats, one to 750 feet (230 meters) and one to 675 feet (208 meters) as "scary" for the crew. Certainly serious enough to be recorded in the boat's log.

In game with a VIIc, I have been down to 220-230 meters, before getting a visual and verbal warning from the chief that we are "too deep". If you immediately rise at that point, you can get away with as little as 1% damage to the pressure hull.

Is the stock game accurate? hard to say, it feels about right to me. Remember that for each 10 meters of depth, the pressure rises by a factor of one over the water presure at sea level, so:

sea level = 1
100 meters= 11x
150 meters= 16x
200 meters= 21x
250 meters= 26x

at sea level, pressure is 15 pounds per square inch. At 250 meters, it is 390 pounds per square inch.

Quote:

Originally Posted by Bilge_Rat (Post 1350929)

sea level = 1
100 meters= 10x
150 meters= 15x
200 meters= 20x
250 meters= 25x

Shouldn't that be 11x, 16x, 21x, 26x, etc?

Approximately one atmosphere worth of pressure from the "natural one" and on top of that one for each 10 meters of water.

Quote:

Originally Posted by Fincuan (Post 1350938)

Shouldn't that be 11x, 16x, 21x, 26x, etc?

Approximately one atmosphere worth of pressure from the "natural one" and on top of that one for each 10 meters of water.

yes, you are right. Its been a long time since I learned that formula.

Stock is way off, they had the type VIIC/41 at 300 meter crush depth.

Quote:

Originally Posted by Bilge_Rat (Post 1350929)

Indeed. When it comes to uboats, it is very hard to separate the facts, from the myths. Especially when many of the myths, are believed as facts.

We have a new record-holder.

On march 11, 1943, U-432, a veteran VIIc on its 8th war patrol but w. a green skipper sank a merchantman. Incredibly, instead of taking evasive action, the boat stayed at periscope depth and the officers broke out champagne to celebrate... :o

...When the corvette Aconit carried out a standard sweep, it was also surprised to find U-432 still at PD.

Aconit dropped 10 DCs which caused extensive damage to U-432 and drove it down to 1,000 feet (307 meters). This depth "...so terrified all hands.." that the skip decided to surface at which point it was quickly sunk by the escorts. There were 20 survivors.