Picture of Building a One sheet boat
Warning: Woodworking is inherently dangerous. You are using sharp tools some of them spinning at large RPM's. You need to be wearing eye protection at all times, hearing protection as needed and because you are going to be working on some very small pieces you must use a push stick. Niether I or Instructables bear any responsibility if you do something stupid, lose focus, act carelessly, or recklessly.
The same can be said about boating, you should be wearing a life vest anytime you are in a boat and always acting in a safe manner.
The town I live in has a boat building/ racing contest every year. The challenge to this contest is the materials you are allowed to use as well as the ones you are not.

The materials include:
1) 1 sheet of Plywood (any thinckness)  
2) 2 8 foot long 2X4's
3) 1 Roll of Duct tape (Essential for almost everything I build)
4) 1 Lbs of fasteners (I chose 1X6 rough thread drywall screws)

You are not allowed to use Glue, Epoxy, Chaulk, Silicone... In short NO adhesives at all.
The boats may be decorated with paint and will also be judged on theme and appearance.

I had paint laying around so my total cash outlay was less then $50
Here is a link tot he Yahoo groups that I got the plan / desgn from along with some great advice. http://groups.yahoo.com/group/onesheetwonders/
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me and a couple of friends built this boat from your instructable, we found them to be a little too rocky so we have bolted two together to make a small catamaran and they are brill, i use a small 3.5hp out board on mine, you can stand up in them now, only one draw back is that you can not paddle them on your own.
i will try and get a pic for you to see, we also use them on a small tidal river and use a plank to make a seat to sit higher above the water line.
Verga (author)  gareth.collier.19852 years ago
I would love to see a picture of it. Did yiou see the other one I designed? It has a square bow and transom. This gives you more stability as the boat is wider at the ends.
Good luck with yours and stay safe.
me and a couple of friends built this boat from your instructable, we found them to be a little too rocky so we have bolted two together to make a small catamaran and they are brill, i use a small 3.5hp out board on mine, you can stand up in them now, only one draw back is that you can not paddle them on your own.
i will try and get a pic for you to see, we also use them on a small tidal river and use a plank to make a seat to sit higher above the water line.
miketayse4 years ago
The boat looks great! I am going to build one. How stable is the flat bottom?
Verga (author)  miketayse4 years ago
It is pretty stable, You are seated on the bottom and I have swamped it but I had to lean a lot to do it.
I weigh about 200 lbs and had about 5-6 inches of freeboard.
Good luck and psot a picture when you are done please.
Kazelie4 years ago
How many people could fit in this boat?
Verga (author)  Kazelie4 years ago
It is strictly a one person boat. I weigh about 200 lbs and it has about 6inches of freeboard (you can see that in the pictures where I test it out at the quarry).
I suppose you caould put two small children in, But I don't reccomend that. I also strongly suggest wearing a life preserver/ jacket of some type.
Kazelie Verga4 years ago
Thank you. The other thing I was wondering is how balanced is it?
Verga (author)  Kazelie4 years ago
Couple of things, you are sitting on the bottom but it is a very narrow bottom. It does tip but you need to make a conscience effort to do it.
I pulled the paddle very hard and it didn't tip in eiother the quarry or the pool.
Kazelie Verga4 years ago
Ok thanks :D
colorex4 years ago
Verga, I have been considering prices for plywood... Yes I am going to build a boat. I always do a lot of research before I build something, though. Researching latex and fiberglass now...
agis685 years ago
nice job well executed for sure 5/5. This boat is ideal for calm waters like lakes. Do you have any recommendation for sea waters? Any change to shape? any idea?
theburn7 agis685 years ago
you wouldn't want a small boat like this on the ocean. If you did, it would have to have cover from water getting in like a kayak, and I recommend filling it with Styrofoam so it can float.
agis68 theburn75 years ago
and maybe a V shape at bottom....
theburn7 agis684 years ago
Hull shape is always important. Go on the ocean with a small boat, and see how treacherous it is, and figure out what you need to do.
friger4 years ago
I love it! I just sold my 2 sheet kayak/canoe last week and was thinking a of building something to replace it. This might be the ticket. Quick and easy.

That's like a lake! Beautiful! :D
Verga (author) 4 years ago
Roughly the same, You will have to do some planing with a hand plane or belt sander to get the angle.
Good luck with your build and feel free to ask any other questions
mista.v4 years ago
So basically, if I don't have a table saw, I can just buy 1x2s and it'll be the same?
SFX Master4 years ago
Truly and awesome build! I'm seriously considering making one. Thanks alot for the instruction!
paulie90264 years ago
Quick tip for you....if you cut all of your plywood parts on a sheet of 2 inch board insulation, your work surface doesn't have to suffer. Trust me..I learned this on the hard way!
Verga (author)  paulie90264 years ago
Good tip.
I just layed mine on 2 2x4'sand set the circular saw depth for 1/2 inch.
But your method will give it more stability.
McNoodle4 years ago
about how much did this cost and how much weight can it hold?
Verga (author)  McNoodle4 years ago
Cost is based on the quality of the matierials you buy and how many mistakes you have. It also depends on what you have laying around the house. Also the rules for the competition I was in did not allow me to use any glue for this. Some glues are quite expensive, or if you coat it with an epoxy or Polyester resin that will add to the cost.
That being said The 1/ 4 inch B/ C plywood I used was about $20-$23
The 2 x 4's cost about $5 each(I bought Premium grade to reduce the knots and I spent about 40 minutes going through the pile.
I used coarse thread drywall screws these were about $5. I had to use 1" but 3'/4 would have been preferred.
Primer is about $8- $10 and Paint is $10- $15.
All told about $50.
As far as weight I weigh about 200 lbs witht he paddle life vest about 210 lbs and I had about 4-5" of freeboard.
thenickp5 years ago
Very nice job Verga! I have a question I hope you can answer and forgive me if the terminology is not correct. Could I square off the back of the boat - make about a one foot wide transom and use an electric motor with this design? I'm sorry if this has been asked already, but I couldn't find it... thank you!!!
Verga (author)  thenickp5 years ago
You might be able to, if you go tot he "One sheet wonders" yahoo forum they have several designs with a squared back. This boat is very tippy and with me in it. there is only about 6" of freeboard on the side. I weigh about 200lbs
thenickp Verga4 years ago
Thanks Verga... you confirmed my fears (I'm about 215) so I may have to go to a "two sheet wonder"... all the best my friend, Nick
Hi, I did exactly that with this design with the thought of adding a small electric outboard on the back. I already had it from on old canoe..

I also squared and changed the angle on the bow, put a keel strip, made it a bit wider and lowered the thwarts so my kids could sit on them ..

Sadly It was dangerously "tippy" and we didnt even try the outboard.
In the end we just added some rollocks and have been happily and safely rowing on our local river ever since. Here's a pic of my son....Cheers
Thanks for the feedback. It looks like you did exactly what I thought about doing - sounds like you saved me a lot of unnecessary work. Thanks again and the boat (and your son) look great!!! ATB, Nick
Verga (author)  msil30704 years ago
WOW very nice job and he looks like he is having a blast!
Beautiful and simple. Great 'ible. 5/5

A keel strip about an inch thick by 3 inches wide, would help a lot with tracking. It would also help with the strength of the bottom.

I might adapt your design to an outrigger sail boat for my kids to play with. I will however use caulking and a little stronger gunal bands. I don't have to follow your race rules. :-) 
Verga (author) 5 years ago
I took first place in my age group and first place over all. I will a couple of additonal pictures
lazarus4415 years ago
Hello Vegra, could you please be so kind and let me know the "metric" sizes for the "step 1 materials" And please explain what "B/C grade plywood" is Thanks you
This is the standard American grading system for "select" softwood lumber (US Dept of Commerce ratings / standards). B/C is lumber that falls into one or the other of these two definitions (same system is used in Canada as a lot of softwood is exported to the US) B: "A few, small defects but nearly perfect. Used for fine furniture, exposed cabinetry, trim, flooring." C: "Small tight knots. May be nearly perfect on one side. Used for most furniture, shelving, some trim and flooring."
Thanks. two questions are still there:
(1) 2 pieces 8" => (foot?)
2x4's => (2 inch x 4 inch?)

No need for the metric sizes any more, i can convert them for myself

Mfg Lars
Verga (author)  lazarus4415 years ago
Yes the 2x4's are 2 inches (Actual size about 1 3/4 inch) and 4 inches (Actual size about 3 3/4 inch) by 8 ft long.
pop885 years ago
Good idea Good work
the_greg5 years ago
Nice job - both boat and instructable. Did you use exterior / treated ply ?
Verga (author)  the_greg5 years ago
I used exterior 1/4 inch A/C, it was not treated. I was worried that it would need longer to dry than I had to build it.
lordzion5 years ago
I live in Penticton BC Canada and we had races every year the rules were the boat had to be made out of cardboard only and duck tape only and paint the boats were very creative and lasted for as long as two hours
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