IRWIN 28

IRWIN 28 drawing

Sailboat Specifications


Hull Type:
Fin with rudder on skeg
Rigging Type:
Masthead Sloop
LOA:
28.00 ft / 8.53 m
LWL:
22.50 ft / 6.86 m
Beam:
8.00 ft / 2.44 m
S.A. (reported):
397.00 ft2 / 36.88 m2
Draft (max):
4.50 ft / 1.37 m
Draft (min):
Displacement:
7,900 lb / 3,583 kg
Ballast:
3,000 lb / 1,361 kg
S.A./Disp.:
16.07
Bal./Disp.:
37.97
Disp./Len.:
309.62
Construction:
FG
Ballast Type:
Lead
First Built:
1970
Last Built:
# Built:
Builder:
Irwin Yachts (USA)
Designer:
Ted Irwin
Website:

Auxiliary Power/Tanks (orig. equip.)

Make:
Universal
Model:
Atomic 4
Type:
Gas
HP:
Water:
25 gals / 95 L
Fuel:
24 gals / 91 L

Sailboat Calculations

S.A./Disp.:
16.07
Bal./Disp.:
37.97
Disp./Len.:
309.62
Comfort Ratio:
31.67
Capsize Screening Formula:
1.61

Rig and Sail Particulars

I:
35.50 ft / 10.82 m
J:
11.50 ft / 3.51 m
P:
31.30 ft / 9.54 m
E:
12.30 ft / 3.75 m
SPL/TPS:
ISP:
S.A. Fore:
204.13 ft2 / 18.96 m2
S.A. Main:
192.50 ft2 / 17.88 m2
S.A. Total (100% Fore + Main Triangles)
396.62 ft2 / 36.85 m2
S.A./Disp. (calc.):
16.05
Est. Forestay Len.:
37.32 ft / 11.37 m

Sailboat Links

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Notes

One of Irwin's more popular models that underwent a number of changes over a long production run.
Also available with a keel/cb.
Draft- BD:7.25'/BU:3.0'

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