Calculating electrical and auxiliary power usage

Again, this method is due to Frank Fox. Any errors are in my interpretation of what he wrote. The idea is that we will use an arbitrary 37% of the horsepower needed to generate the maximum Ship's Service Turbo Generator (SSTG) output (this is the American term), at 0.746 HP per KW. American WWII-era turbogenerators "have a power factor of 0.8". This is the calculation: HP = (0.37 x max KW) / (0.746 x 0.8) So, taking some liberties, my earlier-era ship that has a 1KW electrical plant would give the following: SHP = (o.37 x 1000) / (0.746 x 0.8) = 619.97 HP