IRWIN 27
Specifications
Hull
| LOA | 27.08 ft |
| LWL | 20.5 ft |
| Beam | 8.67 ft |
| Draft | 7.83 ft/ 2.67 ft min |
| Displacement | 6,600 lb |
| Hull speed1.34·√LWL | 6.1 kn |
Rig & Sails
| Iforetriangle height | 34 ft |
| Jforetriangle base | 10.5 ft |
| Pmainsail luff | 31.67 ft |
| Emainsail foot | 12.25 ft |
| FLforestay | 10.5 ft |
| Mainsail | 388 sq ft |
| Jib (100%) | 178.5 sq ft |
| Spinnaker | 303.5 sq ft |
Engine
| Commonly | Perkins, Yanmar, Westerbeke, Vetus, Ford |
About the IRWIN 27
The Irwin 27 is a classic 27.08 ft masthead sloop designed by Ted Irwin and built by Irwin Yachts (USA) in 1967. With a displacement of 6600.0 lb and a comfort ratio of 25.55, this vessel represents a specific era of American boatbuilding, though the exact number of hulls built remains unconfirmed.
- Best for:
- This boat suits coastal cruisers and weekend sailors who prioritize a comfortable motion and manageable size over high-speed performance. Its moderate sail area-to-displacement ratio of 16.24 makes it well-suited for relaxed cruising rather than racing.
- Bluewater capability:
- With a capsize ratio of 1.85 and a full/long keel, the Irwin 27 is generally considered suitable for protected coastal waters and short offshore passages rather than extended bluewater voyaging.
- Comparables:
- Comparable boats from this era include the Pearson 28 and O'Day 27, which share similar displacement ranges and coastal cruising roles. These vessels offer similar beam and draft characteristics, appealing to buyers seeking affordable, sturdy entry-level cruisers.
Performance
Pricing
We don't have market pricing data for the IRWIN 27 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 27.08ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
8 reported issues across 5 systems for the IRWIN 27, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a IRWIN 27? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.
- ✓ All 8 specific issues — severity, symptoms & fixes
- ✓ Model-specific pre-purchase inspection checklist
- ✓ Downloadable PDF to take to your surveyor — yours to keep
One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep
Similar Sailboats
Which engine powers your IRWIN 27?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Brands sometimes mentioned for this model: Perkins, Yanmar, Westerbeke, Vetus — is it one of these?
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the IRWIN 27
Checking eBay for sails sized to this boat's rig…