SNAPDRAGON 670

SNAPDRAGON 670

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 22.00 ft / 6.71 m
LWL: 19.00 ft / 5.79 m
S.A. (reported): 238.00 ft² / 22.11 m²
Beam: 8.00 ft / 2.44 m
Displacement: 3,240.00 lb / 1,470 kg
Ballast: 1,450.00 lb / 658 kg
Max Draft: 2.67 ft / 0.81 m
Construction: FG
First Built: 1963
Builder: Thames Marine (UK)
Designer: David Feltham/Thames Marine

Sailboat Calculations

Definitions
S.A. / Displ.: 17.44
Bal. / Displ.: 44.75
Disp: / Len: 210.88
Comfort Ratio: 15.76
Capsize Screening Formula: 2.17
S#: 2.63
Hull Speed: 5.84 kn
Pounds/Inch Immersion: 543.11 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 29.50 ft / 8.99 m
J: 8.50 ft / 2.59 m
P: 25.00 ft / 7.62 m
E: 9.00 ft / 2.74 m
S.A. Fore: 125.38 ft² / 11.65 m²
S.A. Main: 112.50 ft² / 10.45 m²
S.A. Total (100% Fore + Main Triangles): 237.88 ft² / 22.10 m²
S.A./Displ. (calc.): 17.43
Est. Forestay Length: 30.70 ft / 9.36 m
Mast Height from DWL: 32.50 ft / 9.91 m

Sailboat Links

Designers: David Feltham
Builders: Thames Marine (UK)
Associations: Snapdragon, Mirage and Invaders Association
Download Boat Record:

Notes

A standard keel model was also available: Draft = 3.75'/1.14.