Beta Marine

Sailboat Specifications

Definitions
Hull Type: Keel/Cbrd.
Rigging Type: Masthead Sloop
LOA: 31.08 ft / 9.47 m
LWL: 22.25 ft / 6.78 m
S.A. (reported): 448.00 ft² / 41.62 m²
Beam: 9.58 ft / 2.92 m
Displacement: 9,600.00 lb / 4,354 kg
Ballast: 3,800.00 lb / 1,724 kg
Max Draft: 7.50 ft / 2.29 m
Min Draft: 3.33 ft / 1.01 m
Construction: FG w/balsa cored deck
Ballast Type: Lead
First Built: 1968
Builder: Irwin Yachts (USA)
Designer: Ted Irwin

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Model: Atomic 4
Type: Gas
HP: 25
Fuel: 25 gals / 95 L

Accomodations

Water: 50 gals / 189 L

Sailboat Calculations

Definitions
S.A. / Displ.: 15.92
Bal. / Displ.: 39.58
Disp: / Len: 389.07
Comfort Ratio: 29.37
Capsize Screening Formula: 1.81
S#: 1.13
Hull Speed: 6.32 kn
Pounds/Inch Immersion: 761.63 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 37.00 ft / 11.28 m
J: 12.10 ft / 3.69 m
P: 32.00 ft / 9.75 m
E: 14.00 ft / 4.27 m
S.A. Fore: 223.85 ft² / 20.80 m²
S.A. Main: 224.00 ft² / 20.81 m²
S.A. Total (100% Fore + Main Triangles): 447.85 ft² / 41.61 m²
S.A./Displ. (calc.): 15.92
Est. Forestay Length: 38.93 ft / 11.87 m

Sailboat Links

Designers: Ted Irwin
Builders: Irwin Yachts
Associations: Irwin Facebook Group
Irwin Yacht Owners
Download Boat Record:

Notes

TALL (sloop) RIG:
I: 39'
J: 12.1'
P: 34.0'
E: 14.0'
Disp.: 9600 lbs.
Bsl.: 3800 lbs.
Also offered as a yawl.
(info provided by user)