IRWIN 3/4 TON

Sailboat Specifications

both US imperial metric

Hull Type:

Fin with rudder on skeg

Rigging Type:

Masthead Sloop

LOA:

34.00 ft / 10.36 m

LWL:

28.25 ft / 8.61 m

Beam:

9.50 ft / 2.90 m

S.A. (reported):

529.00 ft² / 49.15 m²

Draft (max):

4.50 ft / 1.37 m

Displacement:

9,715 lb / 4,407 kg

Ballast:

4,500 lb / 2,041 kg

S.A./Disp.:

18.65

Bal./Disp.:

46.32

Disp./Len.:

192.37

Construction:

FG

First Built:

1976

Builder:

Irwin Yachts (USA)

Designer:

Ted Irwin

Sailboat Calculations

Definitions

S.A./Disp.:

18.65

Bal./Disp.:

46.32

Disp./Len.:

192.37

Comfort Ratio:

24.97

Capsize Screening Formula:

1.78

S#:

2.99

Rig and Sail Particulars

help

I:

43.80 ft / 13.35 m

J:

14.00 ft / 4.27 m

P:

37.10 ft / 11.31 m

E:

12.00 ft / 3.66 m

S.A. Fore:

306.60 ft² / 28.48 m²

S.A. Main:

222.60 ft² / 20.68 m²

S.A. Total (100% Fore + Main Triangles)

529.20 ft² / 49.16 m²

S.A./Disp. (calc.):

18.66

Est. Forestay Len.:

45.98 ft / 14.02 m

Sailboat Links

Designers:

Ted Irwin

Builders:

Irwin Yachts

Associations:

Irwin Yacht Owners

IOR 3/4 ton

Irwin Facebook Group

Download Boat Record:

PDF

Notes

See IRWIN 33/IRWIN 33 MKII.

Sailboat Forum

View All Topics

https://forum.sailboatdata.com/tags/irwin-34-ton

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