Re: Waterjet propulsion

["Sean Walinga" <swalinga@telusplanet.net>]

>I am a bit surprised that all the discussion about waterjets seems to be
>centered around the power output and not the efficiency.  Jetski's have
>enormous amounts of horsepower for their respective weights and
>therefore can afford to be inefficient.  Power is cheap when you're an
>air breather!  50 hp is not out of the question for such craft (the
>small ones!) while 5 would be a very large drive motor for a small
>personal submersible.  I would be interested to hear what details the
>group might have in terms of efficiency for these drives.
>
>R. D. Morrisson

I agree with your statement. The efficiency is not peak with waterjets. I looked into it previously and found it to be unrealistic for my purposes. I would be interested to see a p-sub with it in use though...
ttfn
Sean