Simple origami boat

Before you start, it is important to notice that the paper size is not a standard square paper often used in origami, but it is ISO A4 paper.

Simple origami boat (diagram S1)
Simple origami boat (diagram S2)
Simple origami boat (diagram S3)
Simple origami boat (diagram S4)
Simple origami boat (diagram S5)
Simple origami boat (diagram S6)
Simple origami boat (diagram S7)