- Length
- 9.3 m
- Beam
- 3 m
- Draft
- 2.13 m
- Sail area
- 39.21 m²
Specifications
Dimensions & displacement7
- Length overall
- 9.3 m
- Waterline length
- 6.55 m
- Beam
- 3 m
- Draft
- 2.13 m
- Minimum draft
- 0.94 m
- Displacement
- 3,856 kg
- Ballast
- 1,542 kg
Sails & rig9
- Rig type
- Sloop, masthead rig
- Sail area
- 39.21 m²
- Mainsail area
- 20.54 m²
- Foresail area
- 18.68 m²
- Foretriangle height (I)
- 10.82 m
- Foretriangle base (J)
- 3.45 m
- Mainsail luff (P)
- 9.3 m
- Mainsail foot (E)
- 4.42 m
- Forestay length
- 11.36 m
Engine & propulsion4
- Engine power
- 20 hp
- Engine type
- Petrol
- Engine make
- Universal
- Engine model
- Atomic 4
Hull & construction2
- Hull material
- Fibreglass
- Keel type
- Keel with centreboard
Production & design4
- Production started
- 1965
- Production ended
- 1968
- Hulls built
- 97
- Designer
- Charles Morgan
Performance ratios6
- Sail area / displacement
- 16.26
- Displacement / length
- 381.82
- Ballast / displacement
- 40 %
- Comfort ratio
- 25.86
- Capsize screening
- 1.93
- Hull speed
- 6.21 kn
Yacht photography
Years, generations and variants
Columbia 311 generation
01
1965–1968