[Electric Boats] Newbie Question- How to Convert from ICE HP to Electric HP?

 

Still working on this design...

I'm exploring the use of off the shelf, submersible electric motors to spin props (pod style) for a 45' sailing catamaran with a max loaded displacement of 18,000lbs.

Could anyone help me figure out how to convert the twin 30HP Yanmar diesels that are specified to the appropriate HP or KW of electric motor?

I had thought it was about 15-20KW electric, but had this whole debate on and electric unfriendly forum where they kind of sand bagged me.

Can you guys help me figure out what the appropriate electric motor sizing is to replace a 30HP Yanmar 3YM30?

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