Captain Swain of the Lady Wilma was racing against another padddlewheeler named Sea Raven. The first ship to get to San Francisco would win a clipper ship.

What is the difference between a paddlewheel ship and a clipper ship?

Clipper ships had sails and paddlewheel ships did not.

Paddlewheel ships were powered by steam engines.

Paddlewheel ships were only used for rivers, and clipper ships were used for oceans.