On Jul 30, 2:11 am, "Roger Long" wrote:
It is a jet boat because it will be operating primarily in the shallow
waters ...
The fins are to provide the directional stability normally contributed by
the drag of struts, props, and rudders. They also contribute to roll
damping. ...

That sounds very sensible. The placement and shape of the fins is
also interesting. I was wondering if you had chosen the long, shallow
fins outboard on the chines to control the flow at the jet intakes or
increase hull lift (perhaps to make up for the absence of strakes). I
was also curious about the linkage between the jets and the engines.
On the profile it looks like you might need two CV joints because the
shaft doesn't line up. Thanks again for the education. FWIW, I
think it is a handsome design. I suspect the builders appreciate the
straight forward development of the hull, too.

-- Tom.