The hinge is for the aft opening window in the deckhouse. Below is a picture of how I made a mock up of the window.

Below the window mock up is in place in the open position.

Below the window mock up is in place in its closed position.

Below is a close up of the hinge which makes possible angular and linear movements. It is important to have a linear movement in a window when you clamp it down. Ordinary hinges, in my opinion is no good. Still they are used by nearly every one. The reason why the are not always leak proof is you can only clamp down one side of the window, the side opposite to the hinge.
The thousand old trick of making a hinge of a rope threaded in a eight figure gives enough play to move the windows edge deep into the gasket. Making it non leaking in all conditions.


On Saturday 5 Dec 2009 Mattias visited me. He is a professional balance adjuster. Here he is adjusting my balance I use for epoxy. My balance is now accurate to a tenth of a gram. I feel that if I can do my best on land, my chances to succeed at see will be bigger. I also always pour the epoxy in a second container after having mixed it.
Mattias has is interested in small boats and have bought plans for an Paradox a Matt Layden design.
Paradoxes are slowly spreading from Patagonia to northern Norway.


The bowboard daggertype did not slide up and down to my satisfaction.

I made a new board rotating around an axis. However the line arrangement became to complicated to my taste. I wanted to be able to chance the lines at sea.

Next idea to keep the bow into the wind, making her nicely fore-reach in a storm was to have a mizzen on the rudderpost and sheated to the rudder like the Thames barges a hundred years ago.

However being modern I wanted to make a solid rotating wing-sail using a VX40 rudder. Even that turned out to have its problems, but if at first you do not succeed, try again.

The final theory is to lean the mast to lee. That will give the boat weather helm, creating the same effect as a bowboard or a mizzen but much simpler.
The above picture shows a mock up of the strut giving the mast additional support in storms. The tilting angle is 30 degrees. In addition I have the shrouds.

At the moment I am repairing the damage I have done to the boat. Taking away the case for the bowboard and filling up the big hole.


Thanks to the ingenuity of Beppe my web master my blogg now seems to work. Apparently there are a thing called html which somehow showed itself instead of the picture.

The above is the sides of my centerboard case the inside surfaces difficult to reach on the finished boat i have therefore sprinkled them with copper powder to make them antifouling. As copperpowder solves not well i epoxy i have put peelply on top. After tearing it away one gets a nice smooth surface. It is also good for the underwater part of the hull.
Greatings from Yrvind back in business.


This is line tensioner is for the jib. I have redesigned the rig. There is no longer a forespar nor a stay for the jib to be hankt on to instead its leading edge is made of spectra or dynema and tensioned. Hence the winch.
It gives a very big force fore its size and weight and need no servicing
An other great advantage is because the standing part is made of carbon it can be laminated to the deck spreading out the load on the sandwich construction

Unfortunately the software to this blog still does not work. This has been written blindly. When it works properly I will write more.


Bamboo can grow 121cm 47,6 inches in a 24 hour period with one hour burst of speed more than one meter. That is a world record and impressively fast. But my my boat will be much faster. She may average 3 knots or 133344 meter in 24 hour. But that is slow compared to a airplane which crosses oceans i a few hours. However the sense of speed of bamboo growth or my boats speed is big and that is one of the reasons why it is not boring to spend months at sea in her.


Body and mind is one.
A small boat gives a healthy body.
A healthy body gives a healthy mind.
A big boat gives comfort, but comfort makes you fat and bored.


Good work is the determining variable not time. I like doing good work. I dislike haste. Therefore when not proud of what I have done I redo it until I am satisfied. Dogged does it, and one day the boat will be ready, but when I do not know and to me it is not important because I do enjoy building her.

Publishing problems

By Beppe Backlund Webmaster

Yrvind.com is powered by the well known blog hosting service Blogger, owned by Google. Each part of the site are one separate blog. When Sven is publishing posts, he log into Blogger and make his writing with the tools provided by Blogger. Blogger then transfer the results (via FTP) to yrvind.com located at an webhosting service in Sweden. From day one of this websites life and until the beginning of august ( over a year) this arrangement worked just fine. Now everything is a mess. Sven is unable to properly upload images and publish posts. This situation is frustrating since Sven have a lot of work done on his boat and he want to be able to inform all of you out there.

It’s also frustrating for me as a webmaster. Because i can’t do anything about it. Just sit and wait and hope the people at Google fix the problem. One good thing is – we are not alone. There are many people round the world experience the same problems. Please feel free and click this link leading to The Blogger Help Forum http://www.google.com/support/forum/p/blogger/thread?tid=3ec5d1e5f9f66b5d&hl=en Make your voice heard and write some lines and tell them you have been waiting so long to read more about Sven and his interesting boat project.