home made planing powercat.

[jwtje]

Hello I ame JW Oskam from Holland. my English is not very good but I try. Last year i buld a catamaran of 5.4 meters. The boat is quite good but now I wonder if you have some tips for improvement.

Here is a link of my website.
http://www.avonsearider.nl/index.php...=282&Itemid=29

You tube

http://www.youtube.com/watch?v=xP76S..._order&list=UL

GR JW

[hoytedow]

Goed varen!

Die is het mooist!

[hoytedow]

Welcome to the forum!

[Manie B]

Nice build
thanks for sharing

[jwtje]

Here's another clip is of Hans Dekker waterdisplacement cats. Hans has helped me to design my boat.

I'm thinking to make a steped hull on my boat. Does anyone here has tips or information about steped hull construction??

[hoytedow]

Here is a thread showing one(stepped hull) being built from beginning to end.

Actual real life boat being built

[jwtje]

Did i fogot thet link to the clip of Hans Dekker.? I think you migt like it.

http://video.google.com/videoplay?do...rch&plindex=2#

Nice to sea the buldin of the bigg powerboat. The stepedhull is a difficult story, I'm still thinking about it.


@ hoytedow; thanks for the info.

[Wavewacker]

Cool! Looks like the jet ski of cats out there jumping the wakes. Looks like an Eco 6, one that is on my list of considerations. But it appears the hulls are thiner than Gilbert's design, not sure.

I just wondered of making one a little longer with more aft deck....


Oooops! Nope, that'sno Eco 6, saw the build pics, that's awsome, a mini speed cat, how does it go at slower displacement speeds? In the video is that the same boat with a cabin?

[jwtje]

the last video is a verry diverend cat. that's a water displacement cat 2 x 50hp Honda.
My cat runs good in avrey speed but the best wen its comming out of the water, let say at a 20 25 kmh.

Where can i vind pictures of het Eco 6 ??

[hoytedow]

Originally Posted by jwtje

Did i fogot thet link to the clip of Hans Dekker.? I think you migt like it.

http://video.google.com/videoplay?do...rch&plindex=2#

Nice to sea the buldin of the bigg powerboat. The stepedhull is a difficult story, I'm still thinking about it.


@ hoytedow; thanks for the info.

Dat video bevalt me goed.

[Fanie]

Originally Posted by hoytedow

Dat video bevalt me goed.

Solank jy net nie van die stoel af val nie ne'

As far as I know the stepped hulls enhance the planing abilities of the hull and possibly reduce spray.

[hoytedow]

Fall off what chair? You know I don't speak Dutch and/or Afrikaans.

[Kestrel]

Nice project! congratulations jwtje!
Yes, Fanie, a well (single) stepped hull enhance planing abilities, specially if high loads and advanced center of gravity needs to be used, also an optimized step position improves dynamic stability behaviour (avoiding porpoising, i.e.) and efficiency in general. This thread treats item in some way: Stepped Hull Resistance
Bye
K.