Material preparation: a rectangular piece of paper.

1. First prepare a rectangular piece of paper, which can be a4-sized colored paper. Fold and unfold the rectangular paper horizontally and vertically symmetrically. Then, the two sides are folded to the middle to form a triangle, which is aligned with the central symmetry axis.

2. Fold a small triangle along the lower left corner, fold all four corners in turn, and fold the redundant strips below to form a big triangle.

3. Select the bottom of the triangle, fold it into a small square from the middle, then fold the front and rear corners of the square up into a small triangle, then into a square, and then into a triangle up to become a square.

4. Then gently pull open the left and right corners above the square, then disassemble the left and right sides of the boat's central axis, fold the disassembled parts outward along the side of the boat, and insert the extra sharp feet into the bottom of the paper boat.

5. Finally, pull up the roofs on both sides of the boat and arrange the shape of the boat, and a paper boat will be completed.

Morphological characteristics:

The ship is mainly rectangular in shape. The most common shape is a long and narrow geometric body that is symmetrical left and right, which looks like a huge gold ingot from a distance. The reason why the ship shape is symmetrical is closely related to the performance of the ship. The performance of the ship is also symmetrical.

The shape of the ship includes the shape of the bow and stern, the shape of the superstructure, the position of the engine room and the shape and arrangement of outfitting such as chimneys and masts. Bow shapes are upright, flying scissors, spherical nose and so on. The stern area has various shapes, mainly including oval stern, square stern and cruiser stern. The ship has superstructure, including forecastle, poop, cab and deck room.