# Search Results

1. Post

### Frenchman sets sail across Atlantic in a barrel!

He defined the crossing as done.
Post by: Heimfried, Apr 30, 2019 in forum: Boat Design
2. Post

### Hull shape/DIY plans recomendations for planning 16' 40Hp boat?

Hi S V, as I understood you will use HDPE sheets to build the boat. In which way will you join the sheets/planks? Welding? (As far as I did read...
Post by: Heimfried, Apr 12, 2019 in forum: Boat Design
3. Post

### inspired by rash of failures, Merkel proposes an "EU aircraft carrier"

Hmm, is this really a topic of "Boat Design"? Do you know what this means?
Post by: Heimfried, Mar 20, 2019 in forum: Boat Design
4. Post

### Dealing with air pressure differences inside a sealed hull

Ideal gas law for both conditions: p(1) * V = n * R * T(1) p(2) * V = n * R * T(2) both equations devided by V and rearranged: p(1) = T(1) * n *...
Post by: Heimfried, Mar 17, 2019 in forum: Boat Design
5. Post

### too much weight for my solar powered pontoon styled boat

No. The caculation of static stability is about calm water, no waves at all, and no motion of the boat (no dynamic forces). So fundamentally a...
Post by: Heimfried, Mar 16, 2019 in forum: Stability
6. Post

### too much weight for my solar powered pontoon styled boat

This correct. But the static stability - and this is what I calculate and every common GZ curve is about - presumes all things on board (other...
Post by: Heimfried, Mar 16, 2019 in forum: Stability
7. Post

### too much weight for my solar powered pontoon styled boat

Good to read you will look for professional help. Diagramms for a CoG lowered to 1,5 m above top of pontoons are attached. In your case it would...
Post by: Heimfried, Mar 15, 2019 in forum: Stability
8. Post

### too much weight for my solar powered pontoon styled boat

Your sketch is not very helpful to imagine what a 20° heel would look like. (Stability calculations were made without software for a very long...
Post by: Heimfried, Mar 14, 2019 in forum: Stability
9. Post

### too much weight for my solar powered pontoon styled boat

The large area solar equipment brings a lot of weight with it you connot escape. Therefore is choosing PE pontoons not a good choice, they are...
Post by: Heimfried, Mar 14, 2019 in forum: Stability
10. Post

### too much weight for my solar powered pontoon styled boat

Yes, in German: boote-forum.de - Das Forum rund um Boote https://www.boote-forum.de/showthread.php?t=260166
Post by: Heimfried, Mar 12, 2019 in forum: Stability
11. Post

### too much weight for my solar powered pontoon styled boat

New pic, beam corrected to 4450 mm. If you want to play with it: www.bootsphysik.de/bootxpBE.php Choose the square prism top left. (the link will...
Post by: Heimfried, Mar 11, 2019 in forum: Stability
12. Post

### too much weight for my solar powered pontoon styled boat

Attached a simplified simulation of your boat without the elongation you think at. The cross section of the hulls are simple boxes with same area...
Post by: Heimfried, Mar 11, 2019 in forum: Stability