Sea Urchin is a 21' Aquarius for sale. My father sailed this boat for 15 years in the SF and Inverness Bays before moving up north and then mostly sailing on lakes. Boat and trailer are in relatively good condition, but in need of some cosmetic repair. Boat has been dry docked for the entire time. Comes with sails. However, a new motor is recommended. Asking $2500 or BO.