How to make a simple power boat

The step of making a simple pow boat are as follows:

1. Stick two mineral water bottles side by side with glue or tape.

2. Tighten the bottle cap and stick double-sided tape on the same side.

3. Cut two straws and fix them on the bottle cap respectively.

Pass this thin stick through the straw.

5. Prepare two bottle caps with the same size, cut symmetrical bayonets at the edges of the bottle caps, and drill a small hole with the same diameter as the wooden stick in the middle.

6. Install the plastic sheet of the same bayonet on each bayonet of the bottle cap, and the paddle will be finished.

7. Install the installed paddles on both sides of the stick, and turn them several times to check whether they are smooth and firm.

8. Stick two popsicles on the bottle as the base of the power system.

9. Find a plastic hose with moderate elasticity, insert it into the gap between the popsicle and the bottle, and fix it with glue or tape. Of course, it can also be fixed directly on the popsicle.

10. Pass a thin thread through one end of the hose and connect it to the center of the stick, so that when the hose is loosened, the thin thread can remain straight.

1 1. Turn the thin stick, tighten the thin thread, and then put it into the water to drive.

Ship performance:

1. floatability: refers to the ability of a ship to float in the water and maintain a certain draft and fore and aft freeboards under various loading conditions. According to the balance condition of gravity and buoyancy, the buoyancy of a ship is related to the load and navigation safety.

2. Sinking resistance: refers to the ability of the underwater part of the hull to float without sinking or overturning after immersion. China first invented watertight cabins in the Song Dynasty to ensure the sinking resistance of ships. The rationality of watertight subdivision of the main part of the ship, the freeboard value of the subdivision deck and the stability of the whole ship are the main factors affecting anti-sinking.