Masthead Sloop
• Fin with rudder on skeg
• Built 1970
Dimensions
LOA
28 ft
LWL
22.5 ft
Beam
8 ft
Max Draft
4.5 ft
Displacement
7,900 lbs
Ballast
3,000 lbs
Performance Ratios
Capsize Ratio ⓘ
1.61
(offshore safe)
SA/D Ratio ⓘ
16.0
D/L Ratio ⓘ
310
Ballast Ratio ⓘ
38.0%
Sail Plan
Sail Area
397 sq ft
I
35.5 ft
J
11.5 ft
P
31.3 ft
E
12.3 ft
Construction
Hull Type
Fin with rudder on skeg
Rig Type
Masthead Sloop
Hull Material
FG
Ballast Type
Lead
Production
First Built
1970
Last Built
—
Number Built
—
Engine & Accommodations
Engine Make
Universal
Engine Model
Atomic 4
Engine Type
Gas
Water
25 gal
Fuel
24 gal
Notes: One of Irwin's more popular models that underwent a number of changes over a long production run.\nAlso available with a keel/cb.\nDraft- BD:7.25'/BU:3.0'