IRWIN 31
Masthead Sloop • Keel/Cbrd. • Built 1968
Dimensions
- LOA
- 31.08 ft
- LWL
- 22.25 ft
- Beam
- 9.58 ft
- Max Draft
- 7.5 ft
- Min Draft
- 3.33 ft
- Displacement
- 9,600 lbs
- Ballast
- 3,800 lbs
Performance Ratios
- Capsize Ratio ⓘ
- 1.80 (offshore safe)
- SA/D Ratio ⓘ
- 15.9
- D/L Ratio ⓘ
- 389
- Ballast Ratio ⓘ
- 39.6%
Sail Plan
- Sail Area
- 448 sq ft
- I
- 37 ft
- J
- 12.1 ft
- P
- 32 ft
- E
- 14 ft
Construction
- Hull Type
- Keel/Cbrd.
- Rig Type
- Masthead Sloop
- Hull Material
- FG w/balsa cored deck
- Ballast Type
- Lead
Production
- First Built
- 1968
- Last Built
- —
- Number Built
- —
Engine & Accommodations
- Engine Make
- Universal
- Engine Model
- Atomic 4
- Power
- 25 hp
- Engine Type
- Gas
- Water
- 50 gal
- Fuel
- 25 gal
Notes: TALL (sloop) RIG:\nI: 39'\t\nJ: 12.1'\nP: 34.0'\nE: 14.0'\nDisp.: 9600 lbs.\nBsl.: 3800 lbs.\nAlso offered as a yawl.\n(info provided by user)