SONAR
Fractional Sloop • Fin w/spade rudder • Built 1980
Dimensions
- LOA
- 23 ft
- LWL
- 19.92 ft
- Beam
- 7.83 ft
- Max Draft
- 3.92 ft
- Displacement
- 2,100 lbs
- Ballast
- 930 lbs
Performance Ratios
- Capsize Ratio ⓘ
- 2.45 (use caution offshore)
- SA/D Ratio ⓘ
- 25.9
- D/L Ratio ⓘ
- 119
- Ballast Ratio ⓘ
- 44.3%
Sail Plan
- Sail Area
- 265 sq ft
- I
- 25 ft
- J
- 8.9 ft
- P
- 27.5 ft
- E
- 11.2 ft
Construction
- Hull Type
- Fin w/spade rudder
- Rig Type
- Fractional Sloop
- Hull Material
- FG
- Ballast Type
- Lead
Production
- First Built
- 1980
- Last Built
- —
- Number Built
- 860
Notes: Commissioned by members of Noroton YC of Darien CT USA and first built by Seidelmann Yachts.\nA few were also built by Carbon Index in the UK.\nCurrent builder (2019) is Rondar Raceboats.
Designer
- Bruce Kirby (1929–2021)
Builders
- C. E. Ryder (1976–1990)
- DS Yachts (Schwill Yachts) (CAN) (1971–1986)
- Ontario Yachts (1961)
- Rondar Raceboats (1980)
- Seidelmann Yachts (1977–1986)
- Shumway Marine (USA)