A shell expansion plan should be simple for a barge hull form and from my experience, not usually necessary. Apart from showing plates it can be...
What type & size of boat?
have you also been designing boat for many years? Increasing the beam by 50% (4' to 6') is quite significant
Interesting idea. More energy absorption might make it more effective. But: (a) disturbed water flow may?? cancel its effect, also cause water...
what is the size & displacement (weight) of your 'small sailboat'? Is the prop 'free wheeling' (auto-rotation) or locked.? How many blades? Years...
jehardiman has some good comments & questions. More information or a complete list of specs would really help: ie:...what is the HP rating of the...
The fiberglass won’t stop growth
Check the A/F paints out and see how 'bad' they are with the EPA. Cleaning the bottom each time might be fine but if you miss something you could...
what is the hull material and where are you using the boat. Sometimes the cure is worse than the problem.
congratulations. You could use the 'perimeter base' as a guide or reference for absolute minimum freeboard threshold: It must be clear of water...
I agree What you should also check is the draft of the 'barrels' when there is a full load. If it is more than 1/2 diameter* you may have a...
Yes, I have seen twin swing-down rudders on a 21' boat. I think the guy got them off a small dinghy. Just make sure the blades are 'up' if going...
when you launch it, keep people well clear until you can evaluate/assess the 'thing' for draft, freeboard, stability, etc)
If your boat happens to trim by the bow (bow is down) it can make boat very helm sensitive and lead to 'over-steering' and 'wandering' - extremely...
a pain on the river as she wanders from side to side could you describe the motion. Heeling side to side?... changing direction side to side ? Is...
You need at least one floor ( rough guide: a depth about 1" per foot of span) and it should be worked in with a transverse frame and deck beam (or...
drawings would be useful - and How 'old' and what culture. I have a book (Ships & the Sea)with drawings/sketches from 1500BC to present from...
I don't know - perhaps a good book on wooden boat history. My guess, around 1700-1800.
end plates probably have little improvement effect on a low aspect ratio foil like this.
The explanations gathered from "the internet" leave me unconvinced, like: 1/ to impress the enemy 2/ to break high waves 3/ to provide a high...
