How To Propel A Boat Using Chemical Energy How To Propel A Toy-boat Without Using Motors,batteries,chemical Power And Propel Only By Mechanical Power?

How to propel a toy-boat without using motors,batteries,chemical power and propel only by mechanical power? - how to propel a boat using chemical energy

Like a small boat without the use of motors, batteries, chemicals and energy to start with mechanically driven only by boost?
Then a magnet (not an electromagnet) is used to propel a toy boat through the rotation of the magnet, no motor or electricity?