O'DAY 40
Specifications
Hull
| LOA | 39.58 ft |
| LWL | 33.5 ft |
| Beam | 12.6 ft |
| Draft | 6.3 ft |
| Displacement | 18,000 lb |
| Ballast | 6,600.6 lb |
| Hull speed1.34·√LWL | 7.8 kn |
Rig & Sails
| Iforetriangle height | 52 ft |
| Jforetriangle base | 15.25 ft |
| Pmainsail luff | 46 ft |
| Emainsail foot | 13.25 ft |
| FLforestay | 15.2 ft |
| Mainsail | 723.8 sq ft |
| Jib (100%) | 385 sq ft |
| Spinnaker | 654.4 sq ft |
About the O'DAY 40
Based on the SUN FIZZ 39 > O'DAY 39 by Briand, with modifications by Hunt Associates. Differences from the O'DAY 39: Extended 'suger scoop' stern, different interior layout. Shoal draft version: Draft: 4.90' / 1.49m Displacement: 18500 lbs./ 8392 kgs. Later models (> hull #135) have taller rig. I: 52.00' / 15.85m J: 15.25' / 4.65m P: 46.00' / 14.02m E: 13.25' / 4.04m See O'DAY 40 +135 for some slightly different specs on later boats.
The O'Day 40 is a substantial cruising sloop designed by Briand/Raymond Hunt Associates and built by Lear Siegler Marine (USA) in 1986, with a total production of 180 hulls. It is characterized by its heavy displacement of 18000.0 lb and beam of 12.6 ft, offering a stable platform for long-range cruising.
- Best for:
- This vessel is best suited for coastal and offshore cruisers who prioritize comfort and stability over high-speed performance, particularly those seeking a spacious interior for extended passages.
- Bluewater capability:
- With a displacement of 18000.0 lb and a capsize ratio of 1.93, the O'Day 40 demonstrates strong offshore suitability, offering excellent stability and seakeeping for bluewater passages.
- Comparables:
- Comparable boats from this era include the Tartan 42 and Cal 40, which share similar heavy-displacement characteristics and cruising-oriented designs, though the O'Day 40 distinguishes itself with its specific Briand/Raymond Hunt Associates design lineage.
Performance
ORC Performance Data(1 certificate)
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 | 24 |
|---|---|---|---|---|---|---|---|---|
| 52° | 4.9 | 5.8 | 6.5 | 6.9 | 7.1 | 7.3 | 7.3 | 7.3 |
| 60° | 5.2 | 6.1 | 6.8 | 7.1 | 7.3 | 7.5 | 7.5 | 7.5 |
| 75° | 5.4 | 6.3 | 7.0 | 7.3 | 7.5 | 7.7 | 7.9 | 7.9 |
| 90° | 5.3 | 6.3 | 7.0 | 7.4 | 7.6 | 7.8 | 8.1 | 8.3 |
| 110° | 5.3 | 6.5 | 7.2 | 7.6 | 7.9 | 8.2 | 8.5 | 8.8 |
| 120° | 5.2 | 6.3 | 7.1 | 7.6 | 7.9 | 8.2 | 8.8 | 9.2 |
| 135° | 4.7 | 5.8 | 6.7 | 7.3 | 7.7 | 8.0 | 8.7 | 9.4 |
| 150° | 3.9 | 5.0 | 6.0 | 6.7 | 7.3 | 7.6 | 8.3 | 8.9 |
| Beat VMG | 3.1 | 3.9 | 4.4 | 4.8 | 5.0 | 5.1 | 5.1 | 5.0 |
| Run VMG | 3.4 | 4.3 | 5.2 | 5.9 | 6.5 | 7.0 | 7.8 | 8.4 |
Estimated Value
Low ConfidenceAsking price by model year
12 listings · boat years 1980–1987 · median $50,000
Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.
Estimated Cost of Ownership
Based on 39.58ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
22 reported issues across 8 systems for the O'DAY 40, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a O'DAY 40? 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 22 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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