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DIAGRAM 15.
SUB CALIBRE DEFLECTION FACTORS.
Deflection in Minutes per Knot. vs. Equivalent Full Charge
Multiply by speed across in KNOTS for Deflection in MINUTES.
Speed factor to maintain correct Deflection= 1.44
i.e. Max. Sub-Cal. Speed = 27.8 Knots.

SUB CALIBRE RANGE CORRECTION FACTORS,
True Range Correction Factor Yards per Knot vs True Range (Sub. Cal.) Yards.
Enemy Ship Ke=9/16T
Wind Kw=1.69(T/3- (a cos(theta))/10 - 344 b cos(theta)/V)
Approximations Used
Ke and Kw 1.44 x the approx. used in Diagram 9
For the same E.F.C. Range.
Own Ship Ko=a/11.85

 

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