1970 Irwin 34
LOA
10.36m (34.0ft)
Beam
3.20m (10.5ft)
Displacement
5,443kg (12,000lbs)
Year
1970–1978
Manufacturer
Irwin
Full Specifications
| Specification | Metric | Imperial |
|---|---|---|
| Dimensions | ||
| Length Overall (LOA) | 10.36 m | 34.0 ft |
| Length Waterline (LWL) | 8.23 m | 27.0 ft |
| Beam | 3.20 m | 10.5 ft |
| Draft | 1.52 m | 5.0 ft |
| Mast Height | 14.00 m | 45.9 ft |
| Weight | ||
| Displacement | 5,443 kg | 12,000 lbs |
| Ballast | 2,177 kg | 4,799 lbs |
| Sailing | ||
| Sail Area | 47.9 m² | 516 ft² |
| Rig / Boat Type | Sloop | |
| Hull Material | Fiberglass | |
| Keel Type | Full | |
| Engine & Tanks | ||
| Engine | 18 HP | |
| Fuel Capacity | 76 L | 20.1 gal |
| Water Capacity | 114 L | 30.1 gal |
| Accommodation | ||
| Berths | 6 | |
| Cabins | 2 | |
| Design | ||
| Designer | Ted Irwin | |
| Country of Origin | USA | |
Performance Ratios
SA/D Ratio
15.73
Moderate — adequate for cruising
Ballast Ratio
40.0%
Heavy ballast — very stiff and stable
Capsize Screening Ratio
0.73 Offshore Capable
Excellent — suitable for offshore passages
Lower is better. Values below 2.0 are considered suitable for offshore sailing.
Comfort Ratio
22.6
Moderate — acceptable for coastal cruising
About the 1970 Irwin 34
A classic Irwin design from Florida with a full keel for directional stability. The Irwin 34 is a capable cruiser designed for warm-water sailing with excellent ventilation.