S&S One Ton -1966 Information, Review, Specs

Sailing Performance & Handling

The S&S One Tonners of the mid-1960s were characterized by a high displacement-to-length ratio by modern standards, yet they were considered nimble and high-performing in their day. The 1966 design typically featured a deep fin keel and a skeg-hung rudder, a configuration that provided exceptional directional stability compared to the spade rudders that would later dominate the racing circuit. According to historical design notes from Sparkman & Stephens, these boats were engineered to maintain a high average speed in the arduous offshore conditions of the English Channel and the Tasman Sea.

On the water, the 1966 One Tonner is known for its "sweet" helm. Because the maximum beam is carried relatively far forward compared to later 1970s designs, the hull does not tend to "gripe" or round up violently when over-pressed in a gust. Instead, it maintains a steady, predictable heel. The sail area-to-displacement ratio is moderate, requiring a skilled crew to manage the large overlapping genoas typical of the RORC era. Owners often report that the boat feels "locked in" when beating into a 20-knot headwind, a testament to the hull's deep V-sections forward which minimize slamming in a seaway.

Interior Comfort & Variations

While designed as a premier racing machine, the One Ton Cup rules of 1966 mandated specific accommodation standards, including fixed berths, a functional galley, and a minimum headroom that ensured these boats were viable cruisers. The interior of the 1966 S&S One Ton is typically traditional, featuring a high volume of teak or mahogany joinery. The layout usually consists of a "V" berth forward, a central saloon with settee berths (often with pilot berths above for racing crew), and a compact navigation station and galley flanking the companionway.

Variations on this hull were numerous. While the 1966 racing prototypes were often built using lightweight cold-molded timber or aluminum to save weight, the design was later adapted into several production versions. The most famous sibling is the S&S 34, which utilized the same basic hull lines but was executed in heavy fiberglass. Another notable relative is the S&S 36, which offered a slightly stretched waterline and more generous internal volume for the burgeoning cruiser-racer market.

Popular Mentions & Media

The 1966 S&S One Ton design gained international fame through the exploits of Chris Bouzaid and his yacht Rainbow II. In 1969, Bouzaid took the 1966-designed Rainbow II to Heligoland and won the One Ton Cup, a feat that is widely credited with sparking the yachting boom in New Zealand. This specific victory solidified the Sparkman & Stephens reputation for producing boats that could win on the world stage while remaining robust enough for delivery voyages across the world's most dangerous oceans. The design’s cultural footprint is further extended by its association with the S&S 34, used by famous solo sailors like Jon Sanders and Jesse Martin for their record-breaking circumnavigations.

Known Issues & Buyer’s Checklist

Prospective buyers of a 1966-era One Tonner must account for the specific construction materials used, as these were often "one-off" builds rather than production-line boats.

1. Mast Step and Keel Bolts: In aluminum and wood versions, the high loads from the rig often caused compression issues at the mast step. Inspect the structural floors around the keel bolts for signs of movement or weeping, which can indicate a loss of structural integrity in the grid.
2. Galvanic Corrosion (Aluminum Hulls): Many One Tonners of this era were built in aluminum. Potential buyers should perform a thorough professional hull thickness test (ultrasonic) to check for "pitting" or thin spots, particularly around the waterline and stern.
3. Deck Core Integrity: For those few versions built in early fiberglass or with sheathed wooden decks, moisture ingress into the core is a common "gotcha." Focus on the areas around the chainplates and the oversized winch bases used for racing.
4. Skeg-to-Hull Joint: The skeg-hung rudder is a safety feature, but the joint where the skeg meets the hull can develop stress cracks over decades of hard offshore use. This area should be inspected for any signs of delamination or structural flexing.

Community & Resources

The legacy of this design is primarily preserved through the Sparkman & Stephens Association, a global organization that maintains technical archives and a register of classic S&S designs. Because of the direct lineage between the 1966 One Ton and the S&S 34, the S&S 34 Association also serves as a vital resource for technical data regarding hull performance, rig tuning, and restoration advice.

The Verdict

The 1966 S&S One Ton is a "sailor's sailboat," offering a level of pedigree and sea-kindliness that modern lightweight designs struggle to match. It is a vessel for the maritime purist who values history and heavy-weather capability over interior volume and modern "sugar scoop" transoms.

• Pros:
  • Legendary Sparkman & Stephens aesthetic and handling.
  • Extremely seaworthy with a proven track record in offshore racing.
  • Eligible for prestigious classic yacht regattas worldwide.
  • Directional stability makes it an excellent platform for windvane steering.
• Cons:
  • Older construction (wood or aluminum) requires significantly higher maintenance than modern GRP.
  • The narrow beam and RORC-era hull result in less interior living space than contemporary 34-36 footers.
  • Large, overlapping headsails can be physically demanding for shorthanded crews.