Frederick William Lanchester

Summary

Frederick William Lanchester Aircraft in Warfare — Chapter VI (1916)

Individual value of Ships or Units. The factor the most difficult to assess in the evaluation of a fleet as a fighting machine is (apart from the personnel) the individual value of its units, when these vary amongst themselves. There is no possibility of entirely obviating this difficulty, since the fighting value of any given ship depends not only upon its gun armament, but also upon its protective armour.
Source: Wikisource

Frederick William Lanchester Aircraft in Warfare — Chapter VI (1916)

In all cases where the individual fighting strength of the component units may be different it has been shown that if a numerical fighting value can be assigned to these units, the fighting strength of the whole force is as the square of the number multiplied by their individual strength. Where the component units differ among themselves, as in the case of a fleet that is not homogeneous, the measure of the total of fighting strength of a force will be the square of the sum of the square roots of the strengths of its individual units.
Source: Wikisource

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