Sonata 8

For uses in music, see Piano Sonata No. 8.

Sonata 8

Development
Designer	Gary Mull
Location	United States
Year	1979
Builder	Investigator Yachts
Boat
Displacement	2,822 lb (1,280 kg)
Draft	5.09 ft (1.55 m)
Hull
Type	Monohull
Construction	Fiberglass
LOA	26.25 ft (8.00 m)
LWL	19.75 ft (6.02 m)
Beam	8.20 ft (2.50 m)
Hull appendages
Keel	lifting keel
Ballast	500 lb (227 kg)
Rudder	transom-mounted rudder
Rig
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)
Sails
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)
Sonata 26 →

The Sonata 8 is a recreational keelboat that was designed by Gary Mull and first built in 1979. It was built by Investigator Yachts in Australia starting in 1979, but the design is out of production. It was raced in Australia as a one-design class.

The Sonata 8 design was developed into the Sonata 26 in 1980 and produced by the same manufacturer. The two boats share the same specifications.

Design

The Sonata 8 is 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).

The design has a hull speed of 5.96 kn (11.04 km/h).