Wish rec manual had length

[Platapus]

Originally Posted by Tonnage_Ace

(3600)(length of ship)/observed time in seconds/1852m=target's speed

In other words, if it takes the ship one minute and 15 seconds to pass your vertical reticule, you would enter 75 into the observed time slot. The m besides the 1852 simply stands for meters and doesn't represent another value.

Thanks for explaining that. You must be one of them smart guys

But I ain't . Could you explain why you use 3600 and 1852?

Sorry for the dumb questions, but dumb is what I do bestest.

This sounds like a really cool technique, and I would really like to understand it (if I am capable)