KamaII

[Blue_Heron]

Originally Posted by FishStretcher

Is there more than the Amas/ sponsons?

Note the spray rail that morphs into a lifting strake as it transitions aft. It sheds whisker spray, reducing drag, and provides more lift to support the forward CG he was running. Look at the beginning of the video when he's in displacement mode. The boat is loaded down with a CG pretty far forward.

[FishStretcher]

Originally Posted by Blue_Heron

Note the spray rail that morphs into a lifting strake as it transitions aft. It sheds whisker spray, reducing drag, and provides more lift to support the forward CG he was running. Look at the beginning of the video when he's in displacement mode. The boat is loaded down with a CG pretty far forward.

Good eye! I thought that line on the hull looked funny. Mine is under 4 feet of snow, so I could only go by memory.

I keep thinking about building sponsons for my 25, and think I know how I might build them, but not sure what shape. But that spray rail/ strake thing is another feature. Was that for the one that had a big diesel in it, maybe pushed forward. So that might not be needed on something with a puny SBC in it?

[Bigshrimpin]

It's interesting to see BigFlukes 25 mods . . . I wonder if those black marks might be showing LCG?

[Blue_Heron]

Originally Posted by Bigshrimpin

. . . I wonder if those black marks might be showing LCG?

They look to be in about the right spot...

[FishStretcher]

Thanks Frizz and Bigshrimpin! I'll take anything you have!

[dave s]

I don't know if you guys were aware but Navatek makes a line of complex deep vee hull designs, including Sea Blade fishing models 16',17',19' and 22' in fiberglass and aluminum. And up to 30' for commercial users and even larger for the military.
Very interesting hull designs and I can see some comparable ideas on this 25' SeaCraft. Amas, air entrapment tunnels, fine bow, high deadrise, multiple longitudinal and transverse steps, multiple panel running bottom.
30 patents.
Lots of similiarities to the VDH hull.
Read some good reviews of the hull's running ability in rough water; only the layouts aren't that good for fishing.

Home Page: http://www.sea-blade.com/

Small boats: http://www.sea-blade.com/?page_id=8

Link to YouTube video of 17' running in Hawaii: https://www.youtube.com/watch?v=ST3yA9LqnmQ

[dave s]

More videos.

What is a SeaBlade hull: https://www.youtube.com/watch?v=6LmkE-bk5Pc

Some larger models: https://www.youtube.com/watch?v=CT9h4yYopxI

SeaBlade 17 review: https://www.youtube.com/watch?v=gYfwAHKinc0

When I get to Hawaii, I want one of these!