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View Full Version : How do you calculate speed?


scalelokt
04-05-07, 05:35 PM
Ok I feel like an idiot but oh well. :know:

In SH3 I used the 3 minute 15 second rule on the nav map and got ship speed. In SH4 I'm using feet instead of meters and I get the feeling this method can no longer be used??

I calculate the same way, come up with a speed, and end up missing every time. From where the torpedo goes, the problem with my calculations is the speed for sure, I'm coming up with slower speeds than the actual. I confirmed this by using the 3 minute 15 second rule for an escort moving at "fast" speed and only came up with 7 knots. Cant be right....

So how do you do this in the imperial system? I suppose I could switch back to meters, but I'd rather not....

scalelokt
04-05-07, 05:43 PM
I've read that its the distance measured in 3 minutes multiplied by 20 = knots. That correct?

LukeFF
04-05-07, 05:49 PM
http://www.subsim.com/radioroom/showthread.php?t=110322