|Boat weight||2,822 lb (1,280 kg)|
|LOA||26.25 ft (8.00 m)|
|LWL||19.75 ft (6.02 m)|
|Beam||8.20 ft (2.50 m)|
|Hull draft||5.09 ft (1.55 m)|
|Keel/board type||lifting keel|
|Ballast||500 lb (227 kg)|
|General||Fractional rigged sloop|
|I (foretriangle height)||25.75 ft (7.85 m)|
|J (foretriangle base)||9.00 ft (2.74 m)|
|P (mainsail luff)||28.00 ft (8.53 m)|
|E (mainsail foot)||11.48 ft (3.50 m)|
|Mainsail area||160.72 sq ft (14.931 m2)|
|Jib/genoa area||115.88 sq ft (10.766 m2)|
|Total sail area||276.60 sq ft (25.697 m2)|
The Sonata 8 is a small recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop rig, a transom-hung rudder and a lifting or optionally fixed fin keel. It displaces 2,822 lb (1,280 kg) and carries 500 lb (227 kg) of ballast.
The boat has a draft of 5.09 ft (1.55 m) with the keel down and 0.69 ft (0.21 m) with the keel retracted. The fixed keel version has a draft of 5.2 ft (1.6 m).
After its introduction in 1979 the design was raced in Australia as a one-design class.