American Fiberglass Corp. 21
Sailboat
21′
Since 1973
Overview
- Builder
- American Fiberglass Corp.
- Model
- 21
- Type
- Sailboat
- Built
- 1973 on
- Designer
- Ron Bertholf
- Hull
- Lifting Keel
- Hull material
- Fiberglass
- Rig
- Masthead Sloop
Dimensions
- Length overall
- 21′ (6.40 m)
- Waterline length
- 17′ 8″ (5.39 m)
- Beam
- 8′ (2.44 m)
- Draft
- 1′ 6″ (0.46 m)
- Displacement
- 2,200 lb (998 kg)
- Ballast
- 550 lb (249 kg)
Sails and rig
- Sail area
- 200 sq ft (18.6 m²)
- I (foretriangle height)
- 25′ 1″ (7.65 m)
- J (foretriangle base)
- 8′ 3″ (2.51 m)
- P (mainsail luff)
- 23′ 1″ (7.04 m)
- E (mainsail foot)
- 7′ 9″ (2.36 m)
Design ratios
- Sail area / displacement
- 18.9
- Displacement / length
- 177
- Ballast ratio
- 25%
- Capsize screening
- 2.46
Power from the sails for the boat's weight. Under 16 is modest, 16–20 a typical cruiser, over 20 lively.
How heavy the boat is for its waterline. Under 200 is light, 200–300 moderate, over 300 heavy.
Share of the weight that is ballast. Higher generally means stiffer in a breeze.
Under 2 is generally considered better for offshore use.
More details
- Ballast Type
- Lead
- Construction
- FG
Data from Mauri Pro Sailboat Data. Check details with the builder before relying on them.