speed calculations.

[PL_Cmd_Jacek]

Originally Posted by Platapus

2. Point your periscope at 000. Do not lock the periscope view to the target. Periscope must remain motionless.

3. When bow of the target ship touches the periscope hairline start your stopwatch (I have a real stopwatch, I find it easier to use than the in-game one)

4. Do not move your periscope.

5. When the stern of your target touches the periscope hairline, stop your clock. Note time in seconds that it took for the target to pass "through" the periscope hairline.

I use this excelent technique. It's very usefull. Moreover you can use modification of it.

1) if you are stopped, you are not obliged to direct your bow toward the target.

2) You do not need the calculator, if you just use "2" instead of "1,94", it is enough

3) If you are stopped, you can get target's speed quicker. Just lock the target (mostly it will be the middle of the ship), then unlock and immediately start the clock. When stern match the periscope line - stop the clock. Now just devide lenght of the ship by seconds and you will received target's speed.