Swan 50-S&S Information, Review, Specs

Make
Swan
Model
50-S&S
Builder
Nautor
Designer
Sparkman & Stephens
Number Built
Production Year(s)
1971 - 1975

The Swan 50-S&S represents one of the rarest and most enigmatic chapters in the storied history of Nautor’s Swan. Designed by the legendary firm Sparkman & Stephens (S&S Design #2035) and launched between 1970 and 1971, only two hulls were ever produced: Casades and Kez. This model serves as a vital evolutionary bridge between the earlier, smaller S&S designs and the iconic Swan 55 and 65 models that would eventually define the "Golden Era" of Finnish boatbuilding. According to the Classic Swan Association, the 50-S&S was conceived during a period of rapid experimentation in hull forms, reflecting the transition from traditional long-keeled shapes to the more modern, separate skeg-and-rudder configurations that improved maneuverability without sacrificing the legendary S&S tracking. While it lacks the high production numbers of its siblings, the Swan 50-S&S is revered by maritime historians as a "pure" expression of Olin Stephens’ philosophy—combining a powerful sail plan with a hull capable of weathering the most punishing offshore conditions.

Sailing Performance & Handling

The sailing characteristics of the Swan 50-S&S are defined by its heavy displacement and high ballast ratio, typical of the era’s "ocean greyhound" aesthetic. With a displacement that reaches deep into the mid-40,000-pound range, the boat possesses immense momentum, allowing it to punch through heavy head seas with a comfort level rarely found in modern, lighter performance cruisers. The S&S design features a relatively deep V-shaped entry and a refined run aft, which minimizes slamming and ensures a dry ride even in high-latitude conditions.

Handling is characterized by a "heavy" but precise feel at the helm. Unlike modern wide-beam designs that rely on twin rudders for control when healed, the Swan 50-S&S utilizes a traditional deep fin keel and a skeg-hung rudder. This configuration provides exceptional directional stability, a trait frequently praised in Sparkman & Stephens design archives. While the yacht requires a significant breeze to truly come alive—typically 12 knots or more—once powered up, it tracks as if on rails. The rig is a robust masthead sloop (though some variants of this era’s 55-foot siblings were yawl-rigged), offering a massive foretriangle that demands a strong crew or modern winch upgrades to manage the large overlapping genoas common to the IOR (International Offshore Rule) influence of the time.

Interior Comfort & Variations

The interior of the Swan 50-S&S is a masterclass in traditional Finnish joinery, utilizing high-grade Burmese teak and a layout optimized for security at sea. Unlike modern "open concept" Mediterranean cruisers, the 50-S&S interior is compartmentalized to provide safety and bracing points when the vessel is at an extreme heel. The layout typically features a dedicated navigation station that would make a modern captain envious, with enough space for full-sized paper charts and a suite of electronics.

The cabin configuration generally includes a master aft cabin, which, while more cramped than modern center-cockpit designs due to the narrow S&S transom, offers a secure and quiet retreat. The main saloon is dominated by a large teak table and settees that double as excellent sea berths, equipped with lee cloths. The galley is typically U-shaped and positioned near the companionway to maximize ventilation and minimize motion for the cook. Because only two hulls were built, there are subtle differences in finish and cabinetry between Casades and Kez, reflecting the semi-custom nature of Nautor's early high-end commissions. The craftsmanship found here is what established Nautor’s reputation for building "the Bentley of the seas," a sentiment echoed in Nautor Swan’s Heritage documentation.

While the Swan 50-S&S is too rare to have a massive footprint in popular media, its design DNA is inextricably linked to the Swan 65, which gained global fame by winning the first Whitbread Round the World Race (Sayula II). The 50-S&S is often discussed in scholarly yachting circles as the "lost" S&S Swan, frequently appearing in technical retrospectives of the Sparkman & Stephens design catalog. Its scarcity has made it a "unicorn" for classic yacht enthusiasts, with the two existing hulls often being the subject of dedicated restoration blogs and historical features in classic boat registries.

Known Issues & Buyer’s Checklist

Prospective owners or surveyors of a Swan 50-S&S must approach the vessel with an understanding of 1970s construction techniques. While the hulls are incredibly overbuilt by modern standards, several age-related areas require scrutiny:

  • Teak Deck Integrity: The original decks were thick teak planks screwed into the GRP sub-deck. Over fifty years, the thousands of screw holes often become paths for water ingress into the core. Evidence of "bung" failure or localized soft spots in the deck is a primary concern.
  • Mast Step and Chainplates: On S&S Swans of this vintage, the mast step is a massive steel structure that can suffer from "hidden" corrosion if bilge water has sat against it for decades. Similarly, the stainless steel chainplates, which are glassed into the hull structures, should be pulled and X-rayed for stress corrosion cracking.
  • Osmotic Blistering: While Nautor used high-quality resins, these early fiberglass hulls are susceptible to osmosis. A hull that has not been treated with an epoxy barrier coat in the last decade should be thoroughly moisture-tested.
  • Engine and Systems: Access to the engine—typically a Perkins or older Volvo—is often tight. Buyers should check for updated electrical systems, as the original wiring rarely meets modern ABYC standards for safety and capacity.

Community & Resources

Owners of this rare model find their primary support through the Classic Swan Association, an organization dedicated to the preservation and celebration of S&S-designed Nautor yachts. This community provides a technical forum and a repository of original blueprints and manuals that are essential for maintaining such a unique vessel. Additionally, the Sparkman & Stephens Association offers a wealth of design-specific data for those looking to understand the technical nuances of the #2035 design.

The Verdict

The Swan 50-S&S is a connoisseur’s yacht—a rare artifact from the peak of the S&S/Nautor partnership. It is not a boat for those who prioritize interior volume or ease of docking; rather, it is a vessel for the offshore traditionalist who values sea-kindliness, heritage, and the ability to sail through conditions that would send modern production boats back to the marina.

Pros:

  • Unrivaled Pedigree: A genuine Sparkman & Stephens design from Nautor’s most prestigious era.
  • Ocean-Going Comfort: Exceptional stability and tracking in heavy weather.
  • Exquisite Craftsmanship: Interior joinery that remains the benchmark for the industry.
  • Exclusivity: With only two hulls in existence, it is a guaranteed head-turner in any harbor.

Cons:

  • Maintenance Intensity: High costs associated with maintaining vintage teak decks and complex older systems.
  • Handling Demands: Requires a strong crew or significant modern winch upgrades to handle the large sail plan.
  • Tight Quarters: Less interior volume and narrower beams compared to modern 50-footers.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x Skeg-Hung
Ballast
14100 lbs (Lead)
Displacement
36000 lbs
Water Capacity
88 gal
Fuel Capacity
57 gal

Dimensions

Length Overall (LOA)
50.17 ft
Waterline Length (LWL)
37.28 ft
Beam
13.6 ft
Draft
7.74 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
54 ft
E (Main Foot)
16 ft
I (Foretriangle Height)
60 ft
J (Foretriangle Base)
20 ft
Forestay Length (est)
63.25 ft
Sail Area
1032 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
15.14
Ballast / Displacement Ratio
39.17
Displacement / Length Ratio (D/L) Ratio
310.19
Comfort Ratio
41.83
Capsize Screening Formula
1.65
Hull Speed
8.18 kn