Pelle Helmer Petterson is a Swedish sailor and yacht designer. He is the son of Helmer Petterson and Norwegian-born Borgny Petterson, and studied design at the leading Pratt Institute in New York from 1955 through 1957. His father was also a designer who developed wood gas aggregates and Volvo PV444, strongly influencing his son to go in his footsteps. He is probably best known for designing the Maxi brand of sailing boats, which are still among the most common sailing boats in Swedish waters. He also designed Volvo's successful sports car, the P1800, while he was a student of Pietro Frua.

The Star is a 6.9 metres (23 ft) one-design racing keelboat for two people designed by Francis Sweisguth in 1910. The Star was an Olympic keelboat class from 1932 through to 2012, the last year keelboats appeared at the Summer Olympics.