MAT 12
Specifications
Hull
| LOA | 40.85 ft |
| LWL | 35.43 ft |
| Beam | 12.3 ft |
| Draft | 8.37 ft |
| Displacement | 15,741 lb |
| Ballast | 7,991.7 lb |
| Hull speed1.34·√LWL | 8.0 kn |
Rig & Sails
| Iforetriangle height | 42.58 ft |
| Jforetriangle base | 15.75 ft |
| Pmainsail luff | 54.33 ft |
| Emainsail foot | 19.26 ft |
| FLforestay | 15.8 ft |
| Mainsail | 900.4 sq ft |
| Jib (100%) | 335.3 sq ft |
| Spinnaker | 888 sq ft |
About the MAT 12
Updated vers. is MAT 1245 (2012).
The MAT 12 is a fractional sloop designed by Mills Design and built by M.A.T. in 2006. With a displacement of 15741.0 lb and a beam of 12.3 ft, this vessel represents a specific era of production where the total hulls built count remains unverified in available records.
- Best for:
- This boat suits coastal cruisers and those seeking a comfortable, stable platform with a Comfort ratio of 23.21, rather than high-performance racers. Its fractional sloop rig and substantial ballast of 7991.7 lb make it well-suited for relaxed cruising and single-handing.
- Bluewater capability:
- With a Capsize ratio of 1.97 and a D/L ratio of 158.01, the MAT 12 demonstrates moderate offshore suitability, offering stability for coastal passages but requiring careful assessment for extended bluewater voyages.
- Comparables:
- Comparable boats from the same era include other Mills Design vessels and similar 40-foot fractional sloops like the Beneteau First 40 or O'Day 40. They are comparable due to similar LOA dimensions around 40.85 ft and their focus on balanced cruising performance over pure speed.
Direct variant of the MAT 12
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
ORC Performance Data(3 certificates)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 5.7 | 6.9 | 7.5 | 7.8 | 7.9 | 8.0 | 8.2 |
| 60° | 6.0 | 7.2 | 7.7 | 8.0 | 8.2 | 8.3 | 8.4 |
| 75° | 6.3 | 7.4 | 7.9 | 8.2 | 8.5 | 8.7 | 8.9 |
| 90° | 6.3 | 7.5 | 7.9 | 8.2 | 8.6 | 8.9 | 9.5 |
| 110° | 6.4 | 7.6 | 8.2 | 8.5 | 8.8 | 9.1 | 9.6 |
| 120° | 6.2 | 7.5 | 8.1 | 8.7 | 9.1 | 9.5 | 10.2 |
| 135° | 5.6 | 7.0 | 7.8 | 8.3 | 8.9 | 9.5 | 11.1 |
| 150° | 4.8 | 6.0 | 7.1 | 7.8 | 8.3 | 8.8 | 10.0 |
| Beat VMG | 3.7 | 4.6 | 5.2 | 5.5 | 5.7 | 5.8 | 5.9 |
| Run VMG | 4.1 | 5.2 | 6.1 | 6.9 | 7.5 | 8.0 | 8.9 |
Estimated Value
Low ConfidenceEstimated Cost of Ownership
Based on 40.85ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
5 reported issues across 5 systems for the MAT 12, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a MAT 12? 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 5 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
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Which engine powers your MAT 12?
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Used sails that fit the MAT 12
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