7,45 powercat design

[vander]

Hi,

I am novice in this forum, so I would be very pleased if I can learn some from you and you from me :)

I am starting a design of a 7,45 m powercat for sportfishing and I would like some comments from you about the design of the hull.

The data of the boat will be:

Hull lenght:7,5 m
Max beam: 3,75 m
Hull beam: 1,50 m
Displacement: 3600 Kg at 0.4 m draft

The hull would be something like attached.

It will be stepped for gaining displacement for ahead and transverse seas approaching.

Would be a good idea to make an assymetric hull with less angle inside for gaing efficiency (the beam would be increased to maintain displacement)

I don't really know very much the difference between symmetryc VS assymetry hull in powercats.

Best regards

José Luis

[BrettM]

I would make the lower chine much wider. The way it looks there I imagne it to be a wet boat. Hard to tell with only a single view.

Brett

[Jimboat]

Check out the "Secrets of Tunnel Boat Design" book (http://www.aeromarineresearch.com/stbd2.html) and the "History of Tunnel Boat Design" book (http://www.aeromarineresearch.com/history.html) for power cat designs.

[badges65]

Hi,you might want to look at an IVB hull before you decide,
it will out perform a cat only requires one motor and would be cheaper and easier to build.
you will end up with approx the same dimensions a cat and even more stability!!!
don

[vander]

Hello,

I´ll com back with more views.

Regards

:p