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View Full Version : Limiting max speed when using the snorkel

LukeFF
07-10-05, 01:15 PM
I have read that U-boats could not sail above 7 knots while using their snorkel, or otherwise the masthead would break off. However, in SH3 no such speed restrictions exist. Is there a way to modify this? If ever there was something we could add to RuB, this would be a prime candidate. :hmm:
Jace11
07-10-05, 01:33 PM
good point.

A speed may be present in the sub sim files. I don't remember seeing one though.

If not, it may be a standard modifer reducing speed by say 20% for all subs when using the snort. That would be hard to find and fix.
Duke of Earl
07-10-05, 02:09 PM
good point.

A speed may be present in the sub sim files. I don't remember seeing one though.

If not, it may be a standard modifer reducing speed by say 20% for all subs when using the snort. That would be hard to find and fix.

In the real world, a snorkel should not be used at any speed above a 1/3 bell... or 7 knots, as LukeFF suggested.. because dynamic water pressure will damage or destroy it.. it's just a big, hollow tube after all...

The same should apply to periscopes, to a limited degree, as well... due to their smaller diameter, they can withstand higher speeds... but, I don't think they could be used at a flank bell or at speeds above 8 or 9 knots..

Cordialement, Duke of Earl
LukeFF
07-19-05, 02:37 PM
Bump :D
Treeburst155
07-19-05, 03:02 PM
Very interesting....I'll be banning myself from snorkel and periscope use at speeds above 9 knots. This will make things just a little more complicated and interesting.

Treeburst155 out.
CCIP
07-19-05, 06:02 PM
Well I can't see any values that would help us to do this. The problem is that it sees snorkel-powered sailing as using surface propulsion, and surface propulsion just has a nice blanket set of values for everything. If only there was a value for water drag... :(
LukeFF
07-20-05, 01:58 PM
Well I can't see any values that would help us to do this. The problem is that it sees snorkel-powered sailing as using surface propulsion, and surface propulsion just has a nice blanket set of values for everything. If only there was a value for water drag... :(

Darn! Well, in the meantime, I guess I'll just limit my speed to 7 knots by using the 'honor system' method.
rulle34
07-20-05, 05:48 PM
Hello!
Don't be so upset about this.
The "honor method" is in fact the only realistic one. In reality they didn't have any "built in speed limit". They just set a speed that was in the limit of what the schnorchel could hold for.

/Rulle
LukeFF
07-21-05, 01:58 PM
Hello!
Don't be so upset about this.
The "honor method" is in fact the only realistic one. In reality they didn't have any "built in speed limit". They just set a speed that was in the limit of what the schnorchel could hold for.

/Rulle

That's true, but it would be good if your Chief Engineer warned you about running at too fast a speed with the snorkel raised. Something like, "The snorkel will be damaged above 7 knots speed, sir!
Beery
07-21-05, 03:11 PM
...it would be good if your Chief Engineer warned you about running at too fast a speed with the snorkel raised. Something like, "The snorkel will be damaged above 7 knots speed, sir!

It could easily be added to the 'snorkel raised' message, although I'm not going to be adding it to RUb/SH3 Commander anytime soon, because it means adding it to 70+ files, LOL.