The Swan 47, designed by the legendary firm Sparkman & Stephens (Design No. 2239), is frequently cited by maritime historians as the zenith of the Nautor-S&S collaboration. Launched in 1975 and produced until 1982, this model arrived at a pivotal moment when yacht design was transitioning from the extreme "pinched-end" IOR (International Offshore Rule) racing shapes toward more balanced, seaworthy hull forms. With 70 hulls completed during its production run, the 47 earned a reputation as a "gentleman’s racer" that could cross oceans with speed and an almost clinical level of predictability. According to the Nautor Swan Heritage archives, the vessel was offered in two distinct versions: the Mk I, featuring a traditional companionway, and the Mk II, which introduced a bridge-deck arrangement for increased safety in heavy seas and a modified interior layout.
Swan 47 S&S Information, Review, Specs

- Make
- Swan
- Model
- 47 S&S
- Builder
- Nautor
- Designer
- Sparkman & Stephens
- Number Built
- 70
- Production Year(s)
- 1975 - 1984
Sailing Performance & Handling
The Swan 47 is defined by its remarkable stiffness and ability to maintain momentum in a heavy seaway. With a displacement-to-length ratio that leans toward the "heavy cruiser" end of the spectrum and a ballast ratio approaching 45%, the boat carries its sail area with minimal heel well into the mid-range breeze. Unlike lighter, modern yachts that bounce over the chop, the 47 uses its deep V-sections and significant displacement to slice through waves, a characteristic often described by owners as "the Swan ride."
Handling is characterized by the boat’s deep fin keel and a large, skeg-hung rudder, which provides exceptional tracking. On the wind, the 47 is a quintessential Sparkman & Stephens design; it is "narrow" by modern standards, which allows for extremely tight tacking angles and superb upwind efficiency. While it lacks the sheer off-wind speed of modern flat-bottomed designs, it excels in reaching and beating, where its momentum and directional stability make it a tireless offshore performer. Reviewers from the era often noted that the boat feels "locked on rails," requiring minimal helm correction even when pressed.
Interior Comfort & Variations
The interior of the Swan 47 is a masterclass in Finnish joinery, utilizing hand-rubbed teak or mahogany to create a cabin that feels more like a traditional study than a contemporary yacht. The layout was designed for life at sea, prioritizing secure handholds and functional spaces over the "open-concept" aesthetics of modern Mediterranean cruisers. The standard arrangement features a large "U-shaped" galley to port, which is highly regarded for its safety in a seaway, and a substantial, forward-facing navigation station to starboard.
Variation exists primarily between the Mk I and Mk II iterations. The Mk I typically features a classic layout with a pilot berth and a settee in the main saloon, while the Mk II often incorporated a slightly different cabin entry and an aft cabin that felt more secluded due to the bridge-deck configuration. The aft master cabin, featuring both a double and a single berth in many hulls, remains one of the most practical offshore sleeping arrangements ever conceived, providing comfort regardless of which tack the boat is on.
Popular Mentions & Media
The Swan 47 enjoys an elite status within the Sparkman & Stephens Association, where it is often discussed as the "Goldilocks" boat—larger and more comfortable than the Swan 38, yet more manageable for a couple than the powerful Swan 65. Its cultural footprint is most visible in the classic regatta circuit, where meticulously restored 47s frequently compete in the Rolex Swan Cup in Porto Cervo. The model’s enduring appeal is evidenced by its frequent appearance in "top 10" lists of the greatest bluewater cruisers ever built by editorial outlets such as Yachting World and Cruising World.
Known Issues & Buyer’s Checklist
Prospective owners of a Swan 47 must account for the age of the vessel and the high-maintenance nature of its original premium components.
- Mast Step Corrosion: The Swan 47 utilizes a galvanized steel mast step. Over decades, saltwater sitting in the bilge can lead to galvanic corrosion between the aluminum mast and the steel step, or simply rot the steel itself. This is a critical structural area that requires borescope inspection.
- Teak Deck Longevity: Nautor’s original decks were thick and high-quality, but they were mechanically fastened with hundreds of screws. On a boat of this vintage, the teak is likely nearing the end of its service life. If the bungs are missing or the wood is thin, moisture may have penetrated the core.
- Chainplates: Given the boat’s age and its propensity for high-load offshore sailing, the stainless steel chainplates should be pulled and inspected for crevice corrosion, particularly where they pass through the deck.
- Osmotic Blistering: While Nautor’s layup was superior to most builders of the 1970s, some hulls have shown signs of osmotic blistering. A moisture meter test and a haul-out inspection are essential.
Community & Resources
The primary hub for this model is the Classic Swan Association, an independent organization of owners and enthusiasts dedicated to the S&S-designed Nautor yachts. This group maintains a technical database that includes original blueprints and sail plans. Additionally, the Sparkman & Stephens Association provides historical context and design archives for Hull No. 2239, ensuring that owners have access to the original specifications for restoration purposes.
The Verdict
The Swan 47 S&S is a "forever boat" for the sailor who prizes build quality and heavy-weather capability over modern interior volume and surfing speeds. It remains one of the most beautiful silhouettes on the water, representing a high-water mark for 20th-century naval architecture.
Pros:
- Exceptional build quality that far exceeds modern production standards.
- Superb upwind performance and a comfortable, sea-kindly motion.
- High resale value and a prestigious pedigree that grants access to exclusive regattas.
- A truly "overbuilt" structure capable of circumnavigation.
Cons:
- High maintenance costs, particularly regarding the teak decks and vintage systems.
- Relatively narrow beam limits interior volume compared to modern 47-footers.
- The large, overlapping headsails require significant physical effort or powered winches to manage.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Skeg-Hung
- Ballast
- 15500 lbs (Lead)
- Displacement
- 32400 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 47.83 ft
- Waterline Length (LWL)
- 36.24 ft
- Beam
- 13.76 ft
- Draft
- 7.8 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 55.7 ft
- E (Main Foot)
- 16 ft
- I (Foretriangle Height)
- 62 ft
- J (Foretriangle Base)
- 19.8 ft
- Forestay Length (est)
- 65.08 ft
- Sail Area
- 1059 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 16.67
- Ballast / Displacement Ratio
- 47.84
- Displacement / Length Ratio (D/L) Ratio
- 303.9
- Comfort Ratio
- 38.4
- Capsize Screening Formula
- 1.73
- Hull Speed
- 8.07 kn