SUBSIM Radio Room Forums - Cavitational Speeds

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SUBSIM Radio Room Forums (https://www.subsim.com/radioroom/index.php)

- Silent Hunter 4: Wolves of the Pacific (https://www.subsim.com/radioroom/forumdisplay.php?f=202)

- - Cavitational Speeds (https://www.subsim.com/radioroom/showthread.php?t=208528)

ETR3(SS)

10-25-13 08:02 AM

That explains why I've never seen it then.

Bilge_Rat

10-25-13 08:54 AM

I dont think WW2 subs could go fast enough to cavitate. However, the faster you go, the more noise you make and the farther out you can be detected. This is modeled.

The red line on the 450 foot depth gauge in the stock game is the "test depth", the official maximum diving depth of the subs according to the U.S. Navy. In game as in real life, you can go deeper. How much deeper depends on the sub and mod you are using. The U.S. Navy was more conservative than the Kriegsmarine in its calculation of the maximum safe depth.

When you crash dive, that is also the depth at which the sub will level out.

ETR3(SS)

10-25-13 12:59 PM

Technically cavitation occurs at the surface (depth). Boat owners can see cavitation evidence on their props.

Rammstein0991

10-25-13 02:53 PM

Quote:

Originally Posted by Admiral Halsey (Post 2132082)

If your using the 165 ft depth gauge it's your periscope depth. If you're using the 450 ft depth gauge while running the stock game it's your crush depth and you can't exceed it or you will die. If you're running a mega mod like TMO it's your test depth and you can exceed it but how deep you can go beyond it depends on hull integrity and how much of a risk taker you are.(Though most of the time you'll have to go deeper then you're comfortable with to get the destroyers off you.)

Thanks :)

Eesocks

11-09-13 07:19 PM

After an attack on a TF I went deep and slow and got soon got pinged and had some DC's dropped on me which I managed to evade. After 30 mins the 2 escorts lost contact with me but still remained over me.

I was at 450ft and Rigged for Silent and ordered Ahead Standard, which gave me 7kts in my Balao at 170 rpm, with one Escort on either side and neither of them heard me go. After a while I went to radar depth and they were still there looking for me.

I've never risked it before, but it seems like it does work under certain circumstances,

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