1. Mark ship position on map, and start timing for 30 seconds.
2. Mark ship position on map after 30 seconds
3. Measure distance between two points in yards
4. Multiply that number by .06 to get your speed in Knots
Example:
Ship traveled 150 yards in 30 seconds
150 x .06= 9 Knots
Simple as that, and it is pretty damn accurate. I just sunk 2 large passenger ships using this technique "3 torps each" consecutively and all 6 fish hit home. Using this mod:
http://www.subsim.com/radioroom/showthread.php?t=111371, I pinged both ships, and manually inputted their ranges into the TDC. I guesstimated their AOB and sent both to the bottom. That's pretty damn impressive for me since I have just started using manual targeting. I just have to keep a calculator by the computer
