Does anybody know some formulas for using the TBT?

[TorpX]

Originally Posted by gi_dan2987

I'm curious to know the formulas for figuring distance using the TBT, and also figuring speed of a target using the fixed wire method. I can't find any topics that discuss this.

I don't know what the telemeter marks on the TBT corrispond to, but here is a general formula for calculating range:

R = Mh / 3 tan a

where....... Mh is mast height in feet
...............a is the angle between the waterling and the mast top, degrees
...............R is range in yards

Here is a post with a formula for obtaining speed with the fixed wire method (see post 21), there are also some screen shots of different torpedo attack course finders. If you haven't seen them take a look.


http://www.subsim.com/radioroom/show...ighlight=speed