How does the propeller work?

How does the propeller work?

• A. Pushes water toward the bow
• B. Rotates in the water to force water behind the boat
• C. Reduces drag on the hull
• D. Controls steering

Answer: (B)

Propulsion comes from the propeller spinning its blades to push water backward. By accelerating water toward the stern, the propeller creates a forward thrust on the hull (Newton’s third law: every action has an equal and opposite reaction). That backward push of water is what moves the boat forward. It doesn’t push water toward the bow, it doesn’t reduce hull drag, and steering is handled by the rudder, not the propulsion itself. Reversing the gear can push water forward to create reverse thrust.

Propulsion comes from the propeller spinning its blades to push water backward. By accelerating water toward the stern, the propeller creates a forward thrust on the hull (Newton’s third law: every action has an equal and opposite reaction). That backward push of water is what moves the boat forward. It doesn’t push water toward the bow, it doesn’t reduce hull drag, and steering is handled by the rudder, not the propulsion itself. Reversing the gear can push water forward to create reverse thrust.