Interesting DIY-Design

[Holger]

Here is an individual design of a trawler with interesting technical details.
Sorry, the website is in German only, but there are so many excellent pics for easy understanding.
Have a look on the videos and the effect of the boats`s rudder design.

http://www.kaniva.de

[stuart hearn]

thank you Holgar
the form of the bottom is similar to the river boat on my website, and so in the rudder, pretty close the rudder
i have posted on rudders before with some saying mine is too small, , plan is but a fraction of what makes a rudder work

i have been over to Circa Marine NZ this week , they are doing the 4th Dashew Ocean power boat, the entry is superb, very knifelike and the deadrise last couple of metres is almost zero
What worries me , and REALLY worries me, is EEC, or electronic engine management, crossing an ocean Just this week I had the misfortune to fry a new board on the Raymarine Autopilot Now the fuse does not protect, the board as the diodes soak up so much amperage BEFORE the fuse can blow, and whoomph the board has gone
I saw this on a John Deere tractor this week too
So what happens half way between NZ and Australia? If such an event happens, mabe I,ll start new thread abt this
Cheers
Stu

[Holger]

Hi Stuart,
thanks for the info about the Raymarine autopilot. I have also installed one which I want to use when running under engine power. I think it might be useful to have a separate (magnetic) fuse attached at the hydraulic pump of the autopilot.
If I would run a motorboat on long distances offshore, I might use a vane gear for steering to keep the boat in a certain position to wind (and waves) for smoother running.

[stuart hearn]

Holgar
I sent you an email, have no idea if it arrived
If you do not see it please email hearnyacht@gmail.com
In it, I said I would be in Dusseldorf 1 March, then Bayreuth
cheers
Stuart

[stuart hearn]

i just spent 30 mins trying to find a contact here for admin? in desperation I came here

[Conall]

Holger,

That's an impressive build. Do you think he's getting anything out of the sail or is it for steadying? I'm going to go out on a limb and say that he's in the top five of the quality of construction of all the owner/builder web sites I've viewed.

Conall

[Holger]

Conall,

I think he uses the sail mainly for stabilization. Going windward would be difficult, but if the wind is coming from the right direction and force it could save some fuel.

[rkingsland]

I looked at that web site when Holger posted it and was impressed with the pics. The whole web site makes much more sense when you use google translate and get it in fractured english, which makes it easier to follow. Dieter designed and built this boat for stability for his wife's comfort, who gets quite uncomfortable with motion. He told me he has 8 years and 4900 hours in the project, 98% of it alone. It's really beautifully designed, planned, and executed. Very nicely done. He's paid for it by spending the last 15 years flying airplanes ferrying sky divers to the jump point. An interesting guy.

[BrianR]

Nicely detailed boat, quite complex. Interesting to see what 5000 hours will buy, as that is my target timeframe.
Brian