What screws are located behind the rudders?

The correct answer identifies the positioning of the screws located behind the rudders, which play a vital role in a ship's maneuverability and propulsion. Positioning can vary by class of vessel, but typically, the arrangement of screws and rudders is designed to optimize hydrodynamic efficiency and control.

In many modern naval vessels, the screws – which refer to the propellers – are positioned strategically behind the rudders to provide effective control over the ship's direction and to minimize turbulence that could interfere with the rudder's function. This arrangement allows for improved steerability and enhances the ship's ability to maintain its desired course.

The selected option reflects the correct pairing of screws that are typically found in relation to the rudders in naval architecture and design. Understanding this configuration is essential for naval personnel, as it directly ties into navigation and operational command efficiency.

The other options represent combinations of screws that do not correspond to the standard configurations observed in naval vessels, thereby not adhering to the typical design principles associated with effective vessel propulsion and maneuverability.