Until more information is listed this publication at present just returns you to the Power chain thread.
If anyone would like to take this forward and produce a spread sheet, they are welcome to do so !
To make this a useful tool the following information for your particular boat/ power chain needs to be logged.
Boat model/ number of engines/Engine type/gearbox/ratio/prop dia and? pitch/ shaft dia/ approx revs at cruising speed and fuel consumption if known.