When the starboard screw is astern and the port screw is stopped, the stern of the boat will move towards which side?

When the starboard screw is engaged in reverse (astern) and the port screw is not turning (stopped), the thrust generated by the starboard screw pushes the stern of the boat towards the port side. This phenomenon occurs due to the propeller's rotation creating a hydrodynamic force, which effectively causes the stern to pivot towards the side opposite to the rotating propeller.

In this case, with the starboard screw operating in reverse, the boat's stern moves towards the port side, demonstrating the principles of propulsion and pivoting in marine navigation. This movement is an essential concept for boat handling and maneuvering, especially relevant for crew members operating larger vessels where understanding the effects of different propulsion directions is crucial for safe navigation.