IRWIN 37-3
Specifications
Hull
| LOA | 37 ft |
| LWL | 30 ft |
| Beam | 11.5 ft |
| Draft | 4 ft |
| Displacement | 20,000 lb |
| Ballast | 7,800 lb |
| Hull speed1.34·√LWL | 7.3 kn |
Rig & Sails
| Iforetriangle height | 42 ft |
| Jforetriangle base | 17.6 ft |
| Pmainsail luff | 35.6 ft |
| Emainsail foot | 12.9 ft |
| PYmizzen luff | 22.16 ft |
| EYmizzen foot | 8.33 ft |
| FLforestay | 17.6 ft |
| Mainsail | 650.3 sq ft |
| Jib (100%) | 369.6 sq ft |
| Spinnaker | 628.3 sq ft |
Engine
| Commonly | Perkins, Yanmar, Westerbeke, Vetus, Ford |
About the IRWIN 37-3
Available with keel centerboard and staysail ketch rig. Keel/CB: Draft-BU: 4.0'/BD: 8.0' RIG DIMENSION FOR KETCH: I: 42.0' J: 17.6' P: 35.6' E: 12.9' PY: 22.16' EY: 8.33'
The Irwin 37-3 is a classic American cruiser designed by Ted Irwin and built by Irwin Yachts (USA) in 1976. With a production run limited to this single year and an unknown total hull count, it represents a specific iteration of the popular 37-foot line.
- Best for:
- This boat suits coastal cruisers and weekend sailors who prioritize a comfortable, heavy-displacement ride over high-performance racing. Its cutter rig and substantial displacement make it well-suited for couples or small families seeking a stable, easy-to-handle vessel.
- Bluewater capability:
- With a displacement of 20000.0 lb and a capsize ratio of 1.7, the Irwin 37-3 is designed for safe offshore passage making. Its heavy displacement and fin keel provide stability and seakeeping ability suitable for coastal and near-offshore cruising.
- Comparables:
- Comparable boats include the Cal 3-36 and the O'Day 36, which share similar displacement and beam dimensions from the mid-1970s. These vessels offer similar cruising comfort and interior volume, making them direct competitors in the used market.
Direct variants of the IRWIN 37-3
Near-identical models — same hull, builder and designer, re-badged or lightly changed. Specs and owner-reported issues are typically shared across the group, so a sister model's page may carry detail this one doesn't.
Performance
Pricing
We don't have market pricing data for the IRWIN 37-3 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 37ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the IRWIN 37-3yet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a IRWIN 37-3? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your IRWIN 37-3?
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 37-3
Checking eBay for sails sized to this boat's rig…