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- - KamaII (http://www.classicseacraft.com/community/showthread.php?t=24817)

Quote:

Originally Posted by Blue_Heron (Post 234383)

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?

Strick-

If you can make it so we can see the images again, that would be great? I know I can't see them- I get a notice about lacking permissions?

If you are comfortable doing so.

Thanks!

Quote:

Originally Posted by strick (Post 210280)

Never knew of that video... Thanks Tim for posting it. Bigfluke loves his 25 seafari's I think he keeps one in the stock configuration. The other two he has heavily modified as part of his experimental deep V program. Here are some pictures that he has sent me over the last several years. I dont think he would mind me posting them as he has been extremely helpful to many of us on this board.

Making the sponsoons or Ama's as they are referred to in Hawaii.

http://www.casdvm.com/photos/steven%20Lui/section1.JPG

http://www.casdvm.com/photos/steven%...ttach_side.JPG

http://www.casdvm.com/photos/steven%...inted_dta1.JPG

http://www.casdvm.com/photos/steven%...inted_dta4.JPG

25 seafari with Weisman outdrive, surface piercing prop and 480 hp Yanmar engine!

http://www.casdvm.com/photos/steven%20Lui/DSC01450.JPG

http://www.casdvm.com/photos/steven%...468%281%29.jpg

http://www.casdvm.com/photos/steven%20Lui/DSC01415.JPG

http://www.casdvm.com/photos/steven%20Lui/DSC01428.JPG

He put the fuel tank in the bow on one of his 25's just to see how it would ride!

http://www.casdvm.com/photos/steven%20Lui/DSC01422.JPG

His first 25 he modified the bottom of the boat and then put on some rocker plates. This boat had a 300hp Yamaha on a bracket.

http://www.casdvm.com/photos/steven%...20install1.JPG

http://www.casdvm.com/photos/steven%...20install2.JPG

http://www.casdvm.com/photos/steven%...--15%20kts.JPG

strick

Quote:

Originally Posted by Bigshrimpin (Post 234384)

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

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

Quote:

Originally Posted by FishStretcher (Post 234389)

Strick-

If you can make it so we can see the images again, that would be great? I know I can't see them- I get a notice about lacking permissions?

If you are comfortable doing so.

Thanks!

All his pictures have been down for a while, he hosted his pics on his own domain and don't think he keeps it up no more. I wanted to look at his bracket build photos a while back and realized that just about all of his pictures unless quoted are gone now. I did save some of these seafari clips tho, I will try to find them and repost them.

Quote:

Originally Posted by FishStretcher (Post 234389)

Strick-

If you can make it so we can see the images again, that would be great? I know I can't see them- I get a notice about lacking permissions?

If you are comfortable doing so.

Thanks!

Here's one of them:

http://i1291.photobucket.com/albums/...ps5323dd0c.jpg

Holy crap! What is that and why is it on a 25' SeaFari? Seems WAAAY out of place.

Bigfluke (Steven Loui - President of Navatek LTD) used the 25 seafari hull to research and develop his 9m SAM hull (Seakindly, Anti-Slamming Monohull)

The pic above is a 25 seafari with Weisman outdrive, surface piercing prop and 480 hp Yanmar engine.

This isn't the seafari but it's a video of one of those drives in action

https://www.youtube.com/watch?featur...&v=DINWsjuh-ys

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

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

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!