Design and Construction
The Swan 51 measures 51.25 feet overall, with a 42.33-foot waterline and a 14.67-foot beam. She displaces 39,600 pounds and carries 16,500 pounds of lead ballast. That gives her a ballast-to-displacement ratio of 41.67 percent, underpinning her stated ability to carry a full cruising inventory without a dramatic loss of performance.
Frers gave the boat a raked stem and a reverse transom with an integrated swim ladder. The internally mounted spade rudder turns on a stainless steel stock and is controlled by a wheel through a cable-and-pulley system.
The hull is solid glassfibre-reinforced plastic, stiffened by longitudinal stringers and transverse frames. The GRP deck has a balsa core. Hull and deck meet at an inward flange that is bonded and bolted, then finished in white gelcoat. The foredeck is flush, with a raised coachroof and two large hatches.
The fixed fin keel draws 8.90 feet, and an optional keel-and-centreboard version was also offered. The lead keel contains antimony alloy and is bolted to the hull on stainless steel bolts sealed with epoxy.
Rig, Deck, and Performance
The Swan 51 carries a masthead sloop—or, more precisely, Bermuda—rig with aluminium spars and three sets of unswept spreaders. The mast is keel-stepped for stability and strength, while the boom contains an internal outhaul and reefing system.
The standing rigging is stainless steel wire with swaged terminals and turnbuckles. Running rigging is low-stretch polyester with snap shackles and blocks. The sailplan includes:
- A fully battened mainsail with two reefs and lazy jacks
- A roller-furling genoa with a foam luff and UV protection
- A spinnaker with a snuffer sock
- A hanked storm jib set on the inner forestay
Deck hardware includes two primary and two secondary winches, two halyard winches, two spinnaker winches, and a reefing winch. These serve a wide, deep cockpit fitted with a pedestal wheel, mainsheet traveller, and dodger.
The fin-keel version has a PHRF range of 27 to 54, while the centreboard version is rated from 42 to 54. With a hull speed of 8.72 knots, the design presents as a fast, agile boat suited to either racing or cruising in style.
Accommodations
Below, the Swan 51 sleeps six in three cabins. The interior is finished in high-quality teak, with blue-and-white striped upholstery and a teak-and-holly sole.
The forward cabin has a double bunk to starboard, a hanging locker opposite, and an ensuite head with a shower to starboard. In the main cabin, a U-shaped settee wraps around a folding table for six to port. A straight settee to starboard doubles as a berth, while a pilot berth above the port settee is reached by a ladder.
Aft, the layout provides a double berth to port and a single berth to starboard. They share an ensuite head with a shower on the port side. Together, the forward and aft heads serve the accommodation without crowding the central living space.
The U-shaped galley sits to port, just aft of the companionway. It includes a three-burner stove, oven, ice box, double sink, and ample stowage. Opposite, the starboard navigation station has a large chart table, instrument panel, radio, radar, and GPS, with a seat and storage beneath.
Machinery and Tankage
A 73-horsepower Perkins diesel provides the Swan 51’s mechanical baseline. Fuel capacity is 69 gallons, and the water tank holds 184 gallons.
Known Issues and Ownership
The Swan 51’s construction calls for attention in two main areas. First, the keel is secured with stainless steel bolts set in epoxy resin. If the epoxy seal at the bolt line degrades over the hull’s service life, the joint between the lead ballast and fibreglass hull can weep, creating a below-waterline path for water to enter the bilge.
The balsa-cored deck is the other area of note. If age or leaking fittings compromise the surface gelcoat, a cored laminate between GRP skins can draw moisture into the core and rot the balsa from within. Neither issue is peculiar to the Swan 51, but both follow directly from the materials recorded for this design.
With only 36 boats built over five years, ownership comes with a tight community and sparse supply. Careful owners monitor the balsa deck, bonded hull-to-deck flange, and keel-bolt seals. The teak interior joinery, flush foredeck, raised coachroof, and two large hatches reflect an era of Swan construction in which cruising comfort and race readiness shared the same hull.
The Verdict
The Swan 51 remains a serious racer-cruiser and an important Frers debut: a well-built and well-maintained boat that can handle any sea condition, quick enough for the starting line and roomy enough for a family. She isn’t a lightweight, and her balsa-cored deck and keel-bolt seals require informed upkeep.
Pros
- First Frers-designed Swan, with an enduring design lineage from a 36-boat series
- 16,500 pounds of lead ballast and an 8.72-knot hull speed support load-carrying speed
- Three-cabin layout with two ensuite heads and a full navigation station
Cons
- Balsa-cored deck is vulnerable to moisture intrusion if the gelcoat fails
- Degraded keel-bolt epoxy seals can create a below-waterline path for flooding








