FLYING FIFTEEN

FLYING FIFTEEN

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin Keel
Rigging Type: Fractional Sloop
LOA: 20.00 ft / 6.10 m
LWL: 15.00 ft / 4.57 m
S.A. (reported): 142.00 ft² / 13.19 m²
Beam: 7.00 ft / 2.13 m
Displacement: 725.00 lb / 329 kg
Ballast: 372.00 lb / 169 kg
Max Draft: 2.50 ft / 0.76 m
Construction: FG or Wood
First Built: 1948
# Built: 4000
Builder: Various
Designer: Uffa Fox

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

Definitions
S.A. / Displ.: 28.20
Bal. / Displ.: 51.31
Disp: / Len: 95.90
Comfort Ratio: 5.08
Capsize Screening Formula: 3.12
S#: 6.04
Hull Speed: 5.19 kn
Pounds/Inch Immersion: 375.18 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 15.00 ft / 4.57 m
J: 5.50 ft / 1.68 m
P: 20.50 ft / 6.25 m
E: 9.80 ft / 2.99 m
S.A. Fore: 41.25 ft² / 3.83 m²
S.A. Main: 100.45 ft² / 9.33 m²
S.A. Total (100% Fore + Main Triangles): 141.70 ft² / 13.16 m²
S.A./Displ. (calc.): 28.14
Est. Forestay Length: 15.98 ft / 4.87 m

Notes

From the Flying Fifteen International Class site...
The Flying Fifteen has been modernized over the years with Uffa Fox agreeing to changes towards the end of his life to improve the design specification and sail plan.
Original hull tolerances were +/- 25mm (one inch) either side of the median plan lines.
In 1984 Flying Fifteen International reduced the hull tolerances to +/- 15mm and introduced measurement templates. In 1993 a further reduction to +/- 7mm was instituted with additional adjustments to the median plan lines equal to the current design.
Older boats known as Classics, generally those with sail numbers below 2700, are grandfathered in and race legal.
Fleets exist in Australia, Hong Kong, Ireland, New Zealand, South Africa as well as the British Isles.