Anybody built a Nesting Boat

Live near a UK canal ...8 to 20 ft wide and need a boat I can carry in the back of my car and store in the garage.Have designed a 12 ft boat that splits into 4 parts ...Jon boat style .
Anybody any experience.

 

Hi pistnbroke, search 'nesting', or 'nesting dinghy' on this site via the search box, top RH side; there are several threads about them.

 

Thanks I thought I had done that..Looked again but they dont match what I am thinking.
Most cut the boat in half but that makes a 12 ft boat too big for my Kia Nero.
The rear hatch is 40 in wide and 65 in ling with seats folded..
So I propose a Jon boat style cut into 4 40 inch pieces which fit inside one another ( well 40/38/36/34 ) It goes in sideways ( ie transom is front to back in the car)as the transom width is 54 in and 16 in height.

Totally Mad ..thanks

 

Is there enough headroom to put it in the car piece by piece or will you have to stack it first and lift it in all together?

Could you split it in 3, 6' middle section on the roof, 3' bow and stern nested in the car.

It would give you more choices of hull shape, probably less work and even if the joints leak the 6' section could keep you afloat.

 

Lean the biggest section against the trunk lip at 45 deg ...add the other pieces then tip it up level a and push it in. It is not going in Bow first but sideways .
I dont think you quite got it ...how do you get a 6 ft section about 4 ft 6in wide through a 40 inch hole ?

It wont leak as the transverse supports at the joints are 10 in high across the beam well above the draft

Noting is going on the roof thanks but all ideas and suggestion are welcome

 

This one was divided in 3 parts and fits perfectly in a car. I don't know, if this example could be helpful for your ideas. Have a look if you want: boote-forum.de - Das Forum rund um Boote https://www.boote-forum.de/showthread.php?p=4440249&#post4440249

 

Maybe think about a blow up RIB instead; they're pretty good these days, for a while at least. Many nesting sections means many frames to hold shape, increasing weight, and many chances of minor damage, allowing leakage. Then how much will it all flex on choppy waters, causing wear. Or could you fit a towbar to your car, and pull a light trailer with a dinghy. I launch a dinghy with a front wheel drive car, no problems.

 

Thanks for that but its a canoe not a boat . Mine is to be 4 ft 6 in beam so the wife and I can sit side by side which means bow first will not go into the rear of the car so it needs to be cut into 4 pieces about 40 in wide.

Wish this site allowed posting of pictures

 

I don't know much about different types of boats. But it was clear to me that a Jon boat is not shaped like a canoe.

To build a nesting boat you have to construct the joints (bulkheads, bolts, washers, gaskets) and I thought this in particular will be kind of similar regardless of hull shape.
But: as I understand a Jon boat is quite flat, so the levers are short and the forces on the bolts high compared to an canoe.

 

Trying to get an image to give you an idea.

 

Did the above photo by posting the image on a site that does allow images then look at the source which give me the URL and then put onto here. Dimensions may need adjustment Let me know if it worked on your computer

 

The photo is visible to me and I read and understand most of its content.
Regarding the forces acting at the connectors of the boat parts.
What I meant, was not hard slamming in rough seas, but simple waves caused by slow going larger boats on narrow canals. May be I'm wrong, but I would think there could be some times a moment shown in the sketch: a wave peak near the bow another one near the stern and midships nearly no buoyancy. In this case the joint midships will be burdened heavily, the lower bolts will have to take a high tension. Not only the bolts but also their surroundings (areas of the bulkheads near the washers etc.). The smaller the vertical distance of the upper and lower bolts is, the higher the forces.

My friend Günter connected the bulkheads this way (photos):
boote-forum.de - Das Forum rund um Boote https://www.boote-forum.de/showthread.php?p=4437044&#post4437044

 

How much better it is when there are pictures !! or diagrams .
All I can say is that I will build it and try it and see if it breaks !!
The canal is only 2-3 ft deep so I think we will be ok !
I will build it starting with the transom and move forward ..fit the bottom ..glass and turn it over and cut it ...then we find if it nests!!!
Cannot start till the temperature goes up maybe april or may as I must do it outside.

 

If I understand it right, you want to put the part 3 into the part 2. But the bulkheads B, C, D and E all are 4'6" wide. Because of the smaller inside width you have to tilt the nesting parts. There will be knees required at least at the transoms fore and aft. This will further diminish the room for nesting.
But all problems will have a solution, I wish you success.

 

The sides of the boat are not vertical. The bottom of the boat is 6 in narrower than the beam and this varies to allow the parts to nest fully inside one another.

True it is a mental exercise to make the nesting work but I have other drawings...This is why the sides are curved so the narrower parts will fit inside the wider

No knees maybe a triangular wood fillet around the transom its only using Hankai 4 HP 4 st as the speed limit is 4 MPH