Sirocco Boatworks Ltd. Alpa 6.7
Sailboat
21′ 10″
Since 1968
Overview
- Builder
- Sirocco Boatworks Ltd.
- Model
- Alpa 6.7
- Type
- Sailboat
- Built
- 1968 on
- Designer
- Angus Primrose
- Hull
- Lifting Keel
- Hull material
- Fiberglass
- Rig
- Fractional Sloop
Dimensions
- Length overall
- 21′ 10″ (6.64 m)
- Waterline length
- 18′ (5.49 m)
- Beam
- 7′ 10″ (2.38 m)
- Draft
- 2′ (0.61 m)
- Displacement
- 2,400 lb (1,089 kg)
- Ballast
- 800 lb (363 kg)
Design ratios
- Displacement / length
- 184
- Ballast ratio
- 33%
- Capsize screening
- 2.33
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
- Construction
- FG
Data from Mauri Pro Sailboat Data. Check details with the builder before relying on them.