Nautor 50 MS Ketch (Swan 50 MS)
Description
The Nautor 50 MS Ketch (also known as the Swan 50 MS or Nautor 50 Motorsailer) is a premium Finnish bluewater cruising sailboat built by Nautor Oy (Nautor Swan) in Jakobstad (Pietarsaari), Finland, designed by the renowned American firm Sparkman & Stephens. Production occurred from 1976 to 1978 (a short run typical for many high-end Swan models in that era), with a limited number of hulls constructed—likely in the low dozens (exact figures are not widely published, but rarity in current listings and historical context suggest fewer than 50 units). It features a heavy-displacement motorsailer concept with solid fiberglass (GRP) construction, fin keel with skeg-hung rudder for stability and protection, masthead ketch rig optimized for easy handling under sail or power (with generous sail area for light winds and strong motorsailer emphasis), luxurious teak interior (typically 2-3 cabins with 6-8 berths, spacious saloon, galley, heads, and excellent tankage/storage for extended cruising), and a reputation for exceptional build quality, seaworthiness, comfort in all conditions, and timeless elegance—ideal for serious offshore or liveaboard use rather than high-performance racing.
Construction Details
| Designer | Sparkman and Stephens |
|---|---|
| Builder | Nautor Swan |
| Length | 49.700 ft |
| LOA | 49.700 ft |
| LWL | 37.500 ft |
| Beam | 14.500 ft |
| Displacement | 45000 lb |
| Max Draft | 7.000 ft |
| Year Built | 1976 |
The standard boat dimensions
| i | 59 ft |
|---|---|
| j | 19.92 ft |
| p | 51.25 ft |
| e | 16.50 ft |
| p2 | 32.25 ft |
| e2 | 9.50 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 59 ft | 19.92 ft | 51.25 ft | 16.50 ft | 32.25 ft | 9.50 ft | - | - |
Sails
Nautor 50 MS Ketch (Swan 50 MS) - MAINSAIL
| Luff | * 51.25 ft - (15621 mm) |
|---|---|
| Foot | * 16.5 ft - (5029 mm) |
| Leech | * 53.14 ft - (16197 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 53.29 ft - (16243 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 422.4 ft² |
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Nautor 50 MS Ketch (Swan 50 MS) - JIBSAIL
| Luff | * 49.82 ft - (15185 mm) |
|---|---|
| Foot | * 26.63 ft - (8117 mm) |
| Leech | * 42.87 ft - (13067 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 22.91 ft - (6983 mm) |
| Deck Angle | * 12 ° |
| Area | 570.58 ft² |
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Nautor 50 MS Ketch (Swan 50 MS) - GENOA
| Luff | * 59.16 ft - (18032 mm) |
|---|---|
| Foot | * 32.38 ft - (9869 mm) |
| Leech | * 55.43 ft - (16895 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 29.88 ft - (9107 mm) |
| Deck Angle | * 4 ° |
| Area | 883.88 ft² |
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Nautor 50 MS Ketch (Swan 50 MS) - MIZZEN
| Luff | * 32.25 ft - (9830 mm) |
|---|---|
| Foot | * 9.5 ft - (2896 mm) |
| Leech-AftHdBd | * 33.21 ft - (10122 mm) |
| Tack Ang | * 88.06 ° |
| Diag (clew/head) | * 33.31 ft - (10153 mm) |
| Head (inches) | * 4.5 in - (114 mm) |
| Area (no Roach) | 153.03 ft² |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.
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