What is the purpose of paddles on ships?

 What is the purpose of paddles on ships?

The term "paddles" on ships typically refers to paddle wheels, not handheld paddles for rowing. Here's what paddles on ships were used for:

Propulsion: 

Paddle wheels were a way to propel ships before the widespread use of propellers. They were large rotating wheels with flat boards (paddles) on the outer rim. The paddles would push against the water, creating thrust and moving the ship forward.

However, paddle wheels have been largely replaced by propellers for a few reasons:

Efficiency: 

Propellers are more efficient at converting engine power into thrust, especially in rough seas or open water.

Maneuverability: 

Propellers allow for better maneuverability compared to paddle wheels which can be bulky and extend on either side of the ship.

While uncommon today, paddle wheel boats are still used in some specific situations, like riverboats navigating shallow waters. They are also popular for tourist cruises due to their nostalgic charm.