- Length
- 9.75 m
- Beam
- 2.95 m
- Draft
- 2.39 m
- Sail area
- 46.27 m²
Specifications
Dimensions & displacement7
- Length overall
- 9.75 m
- Waterline length
- 7.62 m
- Beam
- 2.95 m
- Draft
- 2.39 m
- Minimum draft
- 1.07 m
- Displacement
- 5,216 kg
- Ballast
- 2,268 kg
Sails & rig9
- Rig type
- Sloop, masthead rig
- Sail area
- 46.27 m²
- Mainsail area
- 22.44 m²
- Foresail area
- 23.85 m²
- Foretriangle height (I)
- 12.04 m
- Foretriangle base (J)
- 3.96 m
- Mainsail luff (P)
- 10.52 m
- Mainsail foot (E)
- 4.27 m
- Forestay length
- 12.67 m
Engine & propulsion4
- Engine power
- 30 hp
- Engine type
- Petrol
- Engine make
- Universal
- Engine model
- Atomic 4
Hull & construction3
- Hull material
- Fibreglass
- Keel type
- Keel with centreboard
- Ballast material
- Lead
Production & design3
- Production started
- 1970
- Production ended
- 1974
- Designer
- Ted Irwin
Performance ratios6
- Sail area / displacement
- 15.69
- Displacement / length
- 328.57
- Ballast / displacement
- 43.5 %
- Comfort ratio
- 31.93
- Capsize screening
- 1.72
- Hull speed
- 6.7 kn
Yacht photography
Years, generations and variants
Irwin 321 generation
01
1970–1974