AMERICAN 21 (AMI)

AMERICAN 21 (AMI)

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin w/transom hung rudder
Rigging Type: Masthead Sloop
LOA: 20.75 ft / 6.32 m
LWL: 17.67 ft / 5.39 m
S.A. (reported): 196.00 ft² / 18.21 m²
Beam: 7.83 ft / 2.39 m
Displacement: 2,500.00 lb / 1,134 kg
Ballast: 900.00 lb / 408 kg
Max Draft: 2.17 ft / 0.66 m
Construction: FG
First Built: 1979
Builder: American Mariner Industries (USA)
Designer: Arthur S. Henry

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

Definitions
S.A. / Displ.: 17.07
Bal. / Displ.: 36.00
Disp: / Len: 202.29
Comfort Ratio: 13.40
Capsize Screening Formula: 2.31
S#: 2.69
Hull Speed: 5.63 kn
Pounds/Inch Immersion: 494.36 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 25.00 ft / 7.62 m
J: 8.50 ft / 2.59 m
P: 23.00 ft / 7.01 m
E: 7.80 ft / 2.38 m
S.A. Fore: 106.25 ft² / 9.87 m²
S.A. Main: 89.70 ft² / 8.33 m²
S.A. Total (100% Fore + Main Triangles): 195.95 ft² / 18.20 m²
S.A./Displ. (calc.): 17.06
Est. Forestay Length: 26.41 ft / 8.05 m

Sailboat Links

Designers: Arthur S. Henry
Builders: American Mariner Industries
Download Boat Record:

Notes

Also called AMERICAN 6.5.