IRWIN 28 MK III
Masthead Sloop
• Fin with rudder on skeg
• Built 1974–1976
Dimensions
- LOA
- 28.5 ft
- LWL
- 23 ft
- Beam
- 9 ft
- Max Draft
- 4.5 ft
- Displacement
- 7,800 lbs
- Ballast
- 3,000 lbs
Performance Ratios
-
Capsize Ratio ⓘ
-
1.81
(offshore safe)
-
SA/D Ratio ⓘ
- 15.3
-
D/L Ratio ⓘ
- 286
- Ballast Ratio ⓘ
-
38.5%
Sail Plan
- Sail Area
- 377 sq ft
- I
- 37 ft
- J
- 12 ft
- P
- 31.7 ft
- E
- 9.8 ft
Construction
- Hull Type
- Fin with rudder on skeg
- Rig Type
- Masthead Sloop
- Hull Material
- FG
- Ballast Type
- Lead
Production
- First Built
- 1974
- Last Built
- 1976
- Number Built
- —
Engine & Accommodations
- Engine Make
- Atomic 4
- Engine Type
- Gas
Notes: Keel/CB: draft BU: 3.0'/BD: 7.25' ballast: 3200 lbs.