Instructables
Cut and fold a sailing catamaran for your nearest "ocean". It can carry a crew of ants, pepples, or some of your sister's favourite (miniature) dolls.

You will need a pair of scissors and an A4 80g/sqm office paper. (No sweat, the design can modified for inferiour formats.) No glue or tape is needed. ...nor batteries.
 
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Step 1: Print or view the drawing, cut the paper to pieces.

The PDF-file provided below contains a drawing.

The drawing is a high precision machine drawing prepaired with programs used by NASA. If it is followed carefully, all parts will fit nicely together. For these reasons, it is recommended that the first one or two boats you make are built from printouts of this file.

Don't cry if you don't have a printer. The design is perfectly possible to follow just by viewing the drawing on your screen.

We start here by cutting the pieces apart along the solid lines. If you want fins, cut them out too. If not, you can leave them where they are. They can be used as a foredeck if left attached to the sail.

Step 2: Prefabricate the easy parts

We warm up by making the simplest parts.

The beam is folded up-down-up-down...
The slits that will accept the hulls are most easily cut when the beam is completely collapsed.

Note that the drawing shows two fins -- fixed rudders -- that can be cut out from that quarter of the paper. The pictures, however, show the original design without fins.

Since the fins will be folded into the hulls, now is the time to decide if you want them or not. For simplicity, leave out the fins the first time. (To be perfectly honest, I have not tried them out on the water, so I cannot tell if they will make any perceptible difference. The original design does not keep a straight course downwind, so it may pay off to experiment with them.)
km945 years ago
Where do I find these diagrams email- kyle-mcadam@hotmail.com
all_thumbs (author)  km945 years ago
What diagrams? I just double-checked that the file papercat.pdf can be downloaded.
km94 all_thumbs5 years ago
Nevr mind I found it
daninja5 years ago
It could also hold people if you shoot them with a shrinkray... sorry about the writing. i have a spraied wrist.
bowow08076 years ago
dude pls tell me where did u find the designs
all_thumbs (author)  bowow08075 years ago
Find? I invented it! :-)
go to step 1 and below the picture is a adobe link called paper cat that is where you print out the plans
Anton19955 years ago
it looks cool I will try it 4/5
Anton19955 years ago
Check out my Instructable for paper boat HERE
jayro7076 years ago
i ment the not te
srry
jayro7076 years ago
how do i print te plans? it only has words and codes??????
looks kool will have to make
Thorgo17 years ago
i made 1 of these 4 a skool project as a raft it didnt rech size requirements and som1 stabbed holes all in one hull so i make a new one to float tomorow at skool
Easy Button7 years ago
this thing looks cool=)
istupid117 years ago
this is mine after made
pic 042.jpg
istupid117 years ago
o srry i figured out what u were sayin so srry but kool boat
istupid117 years ago
hey can u plz um show how to fold the hulls im confused
Stormed7 years ago
That's really cool. I would love to see someone go crazy and make a model with stiffer material like plastic and turn it into a r/c toy with a backup sail :P. *waves to boat* Was good to know you ants.
Kaiven Stormed7 years ago
lol
dartman7 years ago
awsome ive bee trying to make a paper boa for awhile now in hopes of one day doing exactly what stormed suggested
Hold_out7 years ago
cool making right now as I write this
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