NAUTOR 50
Specifications
Hull
| LOA | 49.7 ft |
| LWL | 37.5 ft |
| Beam | 15.09 ft |
| Draft | 5.58 ft |
| Displacement | 50,926 lb |
| Ballast | 14,549.6 lb |
| Hull speed1.34·√LWL | 8.2 kn |
Rig & Sails
| Iforetriangle height | 59 ft |
| Jforetriangle base | 19.91 ft |
| Pmainsail luff | 51.25 ft |
| Emainsail foot | 14.5 ft |
| PYmizzen luff | 32.3 ft |
| EYmizzen foot | 9.5 ft |
| FLforestay | 19.9 ft |
| Mainsail | 988.6 sq ft |
| Jib (100%) | 587.4 sq ft |
| Spinnaker | 998.5 sq ft |
About the NAUTOR 50
Also called SWAN 50 MS. Molds were later sold to Siltala Yachts that built a modified version called the NAUTICAT 52.
The Nautor 50 is a rare, heavy-displacement ketch designed by Sparkman & Stephens and built by Nautor between 1976 and 1978, with only 9 hulls produced. Its authoritative specifications confirm a displacement of 50926.0 lb and a D/L ratio of 431.12, indicating a vessel built for stability and comfort rather than speed.
- Best for:
- This boat is best suited for experienced coastal cruisers and conservative bluewater sailors who prioritize seakeeping and comfort over high-performance racing. Its masthead ketch rig and substantial ballast make it manageable for short-handed cruising, though its age requires diligent maintenance.
- Bluewater capability:
- With a capsize ratio of 1.63 and a comfort ratio of 51.51, the Nautor 50 is well-suited for offshore passages, offering excellent stability and motion comfort in heavy weather.
- Comparables:
- Comparable vessels include the Swan 48 and other Sparkman & Stephens ketches from the mid-1970s, such as the Tartan 42 or O'Day 38, due to their shared emphasis on heavy displacement, fin keels, and traditional cruising comfort.
Performance
Pricing
We don't have market pricing data for the NAUTOR 50 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 49.7ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
1 reported issues across 1 systems for the NAUTOR 50, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a NAUTOR 50? 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 1 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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Used sails that fit the NAUTOR 50
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