The Sovereign 17 is an American trailerable sailboat that was designed by the Sovereign Design Group as a daysailer and pocket cruiser and first built in 1980. It was sold under a variety of names, including the Sovereign 18, Sovereign 5.0, Sovereign 5M and Adventurer 17. The Antares 17 is a development of the Sovereign 17, with a new deck design.