IRWIN MINI-TON

IRWIN MINI-TON
IRWIN MINI-TON

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Lifting Keel
Rigging Type: Fractional Sloop
LOA: 20.81 ft
LWL: 16.50 ft
S.A. (reported): 206.00 ft²
Beam: 8.00 ft
Displacement: 1,900.00 lb
Ballast: 770.00 lb
Max Draft: 4.50 ft
Min Draft: 0.80 ft
Construction: FG
First Built: 1978
Builder: Irwin Yachts (USA)
Designer: Irwin/Rogers

Sailboat Calculations

Definitions
S.A. / Displ.: 21.53
Bal. / Displ.: 40.53
Disp: / Len: 188.82
Comfort Ratio: 10.34
Capsize Screening Formula: 2.59
S#: 3.37
Hull Speed: 5.44 kn
Pounds/Inch Immersion: 471.65 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 24.50 ft
J: 8.00 ft
P: 24.50 ft
E: 8.84 ft
S.A. Fore: 98.00 ft²
S.A. Main: 108.29 ft²
S.A. Total (100% Fore + Main Triangles): 206.29 ft²
S.A./Displ. (calc.): 21.56
Est. Forestay Length: 25.77 ft

Sailboat Links

Designers: O. H. Rodgers
Ted Irwin
Builders: Irwin Yachts
Associations: Irwin Facebook Group
Irwin Yacht Owners
Mini Ton Class
Download Boat Record:

Notes

The IRWIN MINI-TON (<16.5' IOR) is thought to be similar to the IRWIN FREE SPIRIT.