Page 1 of 1

Completed inflatable surfski

Posted: Mon May 28, 2018 6:22 pm
by kayakspearo
P5230211 (225x300).jpg
Hi all,
Just wanted to share the result of my winter building project.
First, the design. I own a Feathercraft Java and I love it. I use it mainly for spearfishing when I travel. Last year, I used it to hunt tunas in Panama. It worked, but It would definitely be beneficial if the kayak was faster for two reason : first, because I have to paddle very long distances, second because most of the time, I have to chase dolphins (because tunas travel with dolphins and dolphins are visible on the surface) and they are fast!!!
So I decided I needed a surfski for hunting tunas. Feathercraft made a surfski for a few years, but it was discountinued a long time ago. I looked hard for a while on the used market but to no avail.
I based the design on regular surfskis, leaning toward beginner/intermediate model as I wanted a kayak that was no too unstable. Final dimensions are 52 cm X 5,95 m (20,5'' X 19,5 ').
I have only tested it on a pond for now and the results were promising. More testing in the next few weeks.
Above and below are pictures of the final product with the Java for comparison. The rear deck is removable (for loading big tunas!!! :D ).

Re: Completed inflatable surfski

Posted: Mon May 28, 2018 6:30 pm
by kayakspearo

Re: Completed inflatable surfski

Posted: Mon May 28, 2018 9:34 pm
by Jeremiah
Wow! You did an amazing job. That's some winter project! Beautiful to look at, I hope it paddles the way you want it to.

It's hard to imagine going after tuna on such a long and narrow platform but you certainly know what you're doing.

It would be interesting to read a few more details on how it came all together. Again, great job!

Re: Completed inflatable surfski

Posted: Tue May 29, 2018 6:48 am
by kayakspearo
Thanks Jeremiah,
Here are a few pictures of the making of (more to come) :

Re: Completed inflatable surfski

Posted: Wed May 30, 2018 7:32 am
by kayakspearo
More pictures, skinning. The hull is PVC, the deck is cordura 1000D.

Re: Completed inflatable surfski

Posted: Wed May 30, 2018 3:44 pm
by Jeremiah
That is such a unique design that I had to keep scrolling back and forth between all of your photos. You can see the Java influences but there is so much more going on. Solid ribs (lots of them) and no chine bars, I keep thinking it's a sit-in but it's a sit-on-top which leads to a whole bunch of "why" and "how" questions. But the reality is that I would not build something similar to it. I'm just admiring the hard work and ingenuity behind it the way I enjoyed seeing the work of Mr. Yost on this forum.

Re: Completed inflatable surfski

Posted: Wed May 30, 2018 4:50 pm
by kayakspearo
Thanks again Jeremiah!
Actually, there is no crossribs. The ones you see in the pictures are made of corrugated plastic and are temporary. I used them to get the right shape for the hull.
The basics design (but not the shape) is really the same as the Java. Inside four chambers are inflated sponsons and yes, it is a sit-on-top. There is also 3 aluminum tubes for longitudinal stiffness.
Here is a couple picture of one of the sponsons:

Re: Completed inflatable surfski

Posted: Wed May 30, 2018 6:07 pm
by kayakspearo
Here are two more pictures. At the bottom is the Epic V8Pro, on wich I based the shape and dimensions.

Re: Completed inflatable surfski

Posted: Wed May 30, 2018 8:21 pm
by Jeremiah
Some things are familiar and some things are very unique. Very cool!

I was lucky to be able to paddle an Epic Pro. A rep from the company will sometimes paddle one where I often kayak. He said give it a try. It was a lot of fun!