How to make propeller for this cardboard Titanic?

You are really doing a great job with the ship. Massive improvement since I last saw it. In regard to the propeller, do you have some construction paper? Or just something that is not as thick as the cardboard? Go to the search and put in propellers. When you find one you like put it into your printer. Adjust it to the size you want. Take the printed copy of it now cut it out and put it one the paper you will use for the rudder. You can put it on grey or copper colored paper and whenever your ready attach it to the ship. Contact me if I missed something,