The following is in response to questions asked on Newporter 40 Together. The ultimate question is "Where can you direct me for information?" The following three links will take you to three different sites on electric propulsion for boats. Read them and enjoy.
http://www.advancedmarineelectricpropulsion.com/index_files/Page497.htm
http://www.elcomotoryachts.com/products/elco-ep-motor.shtml
Charts of real interest are found on the Elco site. (I suggest you (if you can) right click on each link and have the link come up on a new tab. That way you can have several pages constantly handy.)
Click on the chart name that you want and go directly there from here:
Electric Motor Sizing Chart
Electric Motor Performance Chart
These sites should give you some food for thought.
