Quote:
Originally Posted by derstosstrupp
.... It should be said though that computing lead angle for a perpendicular attack using that slide rule is somewhat laborious, because it does not include a tangent scale. Sub Buddy app, however, does (highly recommended).
Something like this is very easy to calculate with a calculator. For a perpendicular attack, lead angle = arctan ( target speed / torpedo speed).
So on a calculator take target speed divided by torpedo speed, and then press “tan-1”.
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Meh, his AoB across the torpedo speed, then the lead angle is across the target speed. When you assume the AOB is 90 in perpendicular setupo then this is close enough.