Conceived for offshore racing and comfortable long-distance cruising, the Swan 55’s modest production run has also made each surviving example part of the marque’s foundational history.
Design and Lineage
Sparkman & Stephens drew the 55-footer as either a yawl or masthead sloop, with classic S&S lines and a moderate sheer. The New York firm was Nautor’s original design partner, and this model belongs squarely to that early collaboration, before the Finnish yard’s later Ron Holland and Germán Frers eras.
The hull measures 54.63 feet overall, with a 38.48-foot waterline and a beam of 14.21 feet. Displacement is 45,600 pounds, including 17,000 pounds of lead ballast. Beneath the hull are a fin keel and skeg-mounted rudder.
With 1,344 square feet of sail area, these proportions place the design firmly in the bluewater-capable performance-cruiser class rather than among lightweight racers.
Construction
The Swan 55-S&S-1970 has robust fiberglass construction, teak decks, and the interior joinery typical of early Swans. From its founding in 1966, Nautor Swan pioneered fiber-reinforced plastic for serial-production hulls over 10 meters. This 55-foot model reflects that early GRP discipline with a solid-glass hull.
The teak deck and interior woodwork are consistent with the yard’s first generation of yachts. Their level of finish helped distinguish the brand from the more utilitarian production fiberglass boats of the era.
Rig, Handling, and Draft
Available as either a masthead sloop or yawl, the Swan 55-S&S-1970 has a standard rig with the following dimensions:
- I: 63 feet
- J: 22 feet
- P: 57 feet
- E: 20.5 feet
The yawl configuration extends the sail plan aft, making it easier to balance the boat when sailing shorthanded and improving control downwind.
With a displacement-to-length ratio near 357 and a ballast-displacement ratio of 37 percent, the hull offers balanced, seakindly motion and a strong bluewater pedigree. The fin keel and skeg-mounted rudder provide directional control suited to both racing and ocean passages. The trade-off is an 8.0-foot draft, which requires careful anchorage planning and limits access to shallow cruising grounds.
Accommodations and Intended Use
Good Old Boat describes the Swan 55-S&S-1970 as a dual-purpose offshore and cruising design, a brief reflected in its teak-finished interior and seakindly motion. The 14.21-foot beam provides the volume needed for extended living aboard without compromising the moderate sheer that keeps the S&S profile elegant rather than bloated.
The Verdict
The Swan 55-S&S-1970 Yawl is a foundational Nautor Swan: a Sparkman & Stephens design built in tiny numbers that helped define the marque’s performance-cruiser identity. Its robust solid-fiberglass hull, lead-ballasted fin keel, and seakindly motion make it a credible bluewater yacht. At the same time, its 16-hull production run gives every surviving example collector significance alongside its practical passage-making ability.
Pros
- S&S/Nautor design that helped establish Swan’s reputation for high-quality performance yachts
- Robust solid-fiberglass construction with period teak finish
- Balanced, seakindly motion and strong bluewater pedigree
- Lead-ballasted fin keel and skeg-mounted rudder for offshore control
Cons
- Only 16 hulls built, limiting availability and spares commonality
- 8.0-foot draft restricts access to shallow cruising grounds
- Early-1970s teak decks require ongoing maintenance vigilance
