MC31 ONE DESIGN
Specifications
Hull
| LOA | 30.02 ft |
| LWL | 30.02 ft |
| Beam | 10.01 ft |
| Draft | 8.53 ft |
| Displacement | 3,858 lb |
| Hull speed1.34·√LWL | 7.3 kn |
Rig & Sails
| Iforetriangle height | 43.63 ft |
| Jforetriangle base | 12.3 ft |
| Pmainsail luff | 43.63 ft |
| Emainsail foot | 12.96 ft |
| FLforestay | 12.3 ft |
| Mainsail | 573.7 sq ft |
| Jib (100%) | 268.3 sq ft |
| Spinnaker | 456.2 sq ft |
About the MC31 ONE DESIGN
The MC31 One Design is a high-performance fractional sloop built by McConaghy Boats, with production records indicating a start year of 2014. Designed for competitive racing, this 30.02 ft vessel features a lightweight displacement of 3858.0 lb and a high sail area-to-displacement ratio of 35.94, prioritizing speed over heavy cruising comfort.
- Best for:
- This boat is best suited for active racers and coastal cruisers who prioritize performance and plan to compete in one-design fleets, particularly those willing to manage a high-maintenance, high-performance rigging and sail inventory.
- Bluewater capability:
- With a low displacement of 3858.0 lb, a capsize ratio of 2.56, and a comfort ratio of 9.24, the MC31 is primarily a coastal racer rather than a heavy bluewater cruiser, though its robust McConaghy construction provides a solid foundation for protected offshore passages.
- Comparables:
- Comparable boats include other McConaghy performance designs and similar 30-foot fractional sloop racers from the same era, such as the J/105 or Beneteau First 30.5, due to their shared focus on lightweight construction, high sail area, and one-design racing integrity.
Performance
Pricing
We don't have market pricing data for the MC31 ONE DESIGN 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 30.02ft LOA. Actual costs vary by condition, usage, and local rates.
Articles & Reviews
Known Issues & Pre-Purchase Inspection
7 reported issues across 6 systems for the MC31 ONE DESIGN, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a MC31 ONE DESIGN? 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 7 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 MC31 ONE DESIGN?
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Used sails that fit the MC31 ONE DESIGN
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