Sailboat [pdf]

This is a set of instructions to fold an origami sailboat from a single square. The document consists of eleven pages and ninety illustrations. Since this is an advanced origami project, prior experience with folding paper is recommended.

This work was in response to a sailboat design challenge posed by origami master Robert Lang. In order for the main sail to have the right shape, many of the folds are based on 30-degree geometry.