Kitetik was the first professionally built infused Harryproa. A falling out between the owner and builder (underquoted despite having been deeply...
Thanks SolGato. Good to see the old girl is still sailing. I steered it for a season when it was Simply The Best. 2 strong memories: We were...
There are several options, but it was designed to be the other side up and that buckled right where it should have, and only a few bricks weight...
Some pics of the test section attached. The failure mode was the lower rod (not tube) failing in buckling. A conventional square truss of the...
The load is carried in recycled plastic boxes on the long hull between the masts. The only time the beams will see significant reverse bending...
The thinking is that the bottom of the beam is in compression, needs to be thick to resist buckling and to give a simple point of contact on the...
Absolutely. It is a brilliant use of low cost composites, once the bugs are out. The main one is that to get sufficient buckling strength, the...
Try this, which is the second image down on the cargo proa web page Cargo Ferry – Harryproa http://harryproa.com/?p=2561. We weighed the...
The best way to follow the cargo proa progress is HarryProa groups.io Group https://groups.io/g/HarryProa where I update every few weeks (won't be...
Boat progress has been a bit slow, but steady. We have reached our first set of UNDP targets and qualified for the 2nd tranche of money. Both...
On the subject of small power boats: The UNDP has given us money to set up boat building courses teaching Fijians how to build sustainable (no...
Thanks. Rocker has always seemed counterintuitive to me. Looked at from the side it is a very low aspect ratio foil shape, with a centre of...
For sure. As well as the smaller cargo proas we are running classes for Women in Fisheries Fiji. The big problem they have is lack of boats,...
Thanks. The faster you go, the more load on the paddle, but the quicker the response. Not a big deal. Easiest way to steer is by moving back...
A couple of years ago I was asked to teach a group of Marshallese Islanders how to build a simple, easily sailed boat for transporting copra,...
Another data point. Next year we are running classes in Fiji to build 8m (26.5') versions of the mini cargo proas I was involved with in the...
I helped a mate build a CM 16' trimaran several years (decades) ago when ply was cheap. The system was quicker and produced lighter hulls than...
No daggerboard, the rudders are oversized so boards are not necessary. The rudders lift up for steering balance, reducing wetted surface when not...
Sure do. Good enough to take a couple of years off to build and pay for an 80'ter to see if it is possible to do something about climate change...
Yes. It is a variation of how we build the Harryproa hulls and beams. Looking at numbers is critical to success, but it should be tempered with...
