Sea Pearl 21
- Type: Sailboat
- Designer: L. F. Herreshoff/Ron Johnson
- Foil: Leeboard
- Cabin: No
- Length: 21'
- Beam: 5'6"
- Draft:
- Max: 2'6"
- Min: 6"
- Weight
- Empty: 600 lbs.
- Ballast: Water, 350 lbs.
- Sails:
- Main: Cat-Ketch 136 sq.ft.
- Materials:
Cedar strips - Links:
- Sea Pearl at Ottawa Small Boat Messabout
- A Night on the Bay, Messabout Stories
- Marine Concepts