Homemade Motor Boat How To Make A Homemade Boat Propeller?

How to make a homemade boat propeller? - homemade motor boat

I need a motor powered boat for my physics class and I have a pleasant working atmosphere propeller. The boat is probably the size of a bottle of shampoo. I need to make a propeller, but do not know what I do or what it should. I hope someone has advice on how a beverage? Thank you in advance.