Production followed quickly. Tillotson-Pearson, already building the Etchells 22 and the Freedom line, took up the design in 1977. More than 200 boats sold in the first year and nearly 1,000 in the next. Of roughly 5,400 constructed, nearly 2,000 of the US boats came from Tillotson-Pearson in Rhode Island; the remainder were built by Performance Sailcraft, a now-defunct San Francisco builder.
Newport, Rhode Island-based J-Boats kept the class proprietary and under tight supervision. It organized regattas and ran the class association until, with help from British enthusiasts, the boat earned IYRU recognition and a place in the Pan American Games.
Design and Construction
The J/24 is a 24-foot one-design with a 9-foot beam, fin keel, lead ballast, and transom-hung rudder. The hull uses fiberglass mat and roving in resin. Both hull and deck are sandwiches of fiberglass around an end-grain balsa core, making them stiff, light, quiet, and relatively free of condensation.
Tillotson-Pearson fairs the keels with auto body putty, though the keel section is much thicker than needed for optimum speed. On some older boats, the trailing edge is twice the minimum thickness.
The chainplates pass through the deck and bolt to the main bulkhead. The starboard chainplate passes through both the bulkhead and hull liner, while the port chainplate bolts through the bulkhead alone. After the first two years, fiberglass reinforcement was added to the port bulkhead in that area. The mast passes through the deck and steps on an aluminum beam tabbed to the main bulkhead.
Rig, Performance, and Handling
The J/24 is a fractional-rig sloop with aluminum spars. Its Kenyon mast section is identical to that of the larger Etchells 22. Because the lower shrouds anchor aft of the mast, they act like running backstays.
The mainsheet traveler bolts across the cockpit seats forward of the tiller, with the cockpit winches just ahead of it. A halyard winch sits on the cabintop. End-boom sheeting and a 4-to-1 boom vang complete the simple, responsive setup; on later boats, the vang swivels so it can be adjusted from either rail.
The boat is renowned for light-air performance. It is also a highly maneuverable keelboat that’s easy to rig and sail. The J/24 balances and sails respectably upwind under mainsail alone, and top sailors note that it always sails better without a reef. Its narrow groove, however, demands constant attention to backstay trim, sheet tension, crew-weight placement, and lower-shroud tension.
A PHRF rating of 165 to 174 puts the J/24 as fast as or faster than a C&C 30, Santana 30, or Pearson 30. Its responsiveness has also made it a favored training boat.
Cockpit and Accommodations
Below, the J/24 is finished in bare white gelcoat. Early boats have coarse non-skid gelcoat on the overhead. The cabin contains a V-berth divided by the mast but still large enough for a couple, along with two quarterberths, a portable toilet, a sink with a hand pump, and a few equipment lockers. The icebox is a portable Igloo cooler with teak glued to it, and it doubles as the companionway step.
Four people can sleep aboard—tightly—for short cruises. A portable head is not fitted, however, and the fifth crew member commonly carried for racing makes an already small boat cramped.
The cockpit is also small and uncomfortable for daysailing. It has no seat backs, the boom is dangerously low, and the deck-sweeping 150% genoa ruins visibility.
Known Issues
Early production boats had a cluster of structural weaknesses. Writing in Practical Sailor, the survey found that boats built during the first two years leaked at the hull-to-deck joint when the silicone sealant failed. Later hulls were bedded with 3M 5200, after which leaks became infrequent.
The same publication documented delamination of the main bulkhead on older boats. Because the chainplates load the plywood directly, delamination could allow the mast to sink a quarter inch or more. The builder later used better plywood and screwed the tabbing.
Pre-1981 hulls contain vermiculite in the keel sump to stabilize the protruding keel bolts. Once saturated, that mineral loses rigidity compared with solid fiberglass, weakening the keel-to-hull attachment.
The earliest boats had thin fiberglass hatches that leaked and fractured under crew weight. Improved Lexan forward hatches arrived in January 1980. Rudder pintles have developed corrosion cracks at the weld between the pintle and its strap after years of use, although weldless pintles appeared in 1981. Welds on the rudder attachment generally have also been known to crack.
Early Stern Twinstays occasionally failed when their bearings froze with age. Some recent Kenyon spars arrived with shrouds of the wrong length or with differing bend.
Other shortcomings are less structural but still troublesome. The reef-line stoppers slip and are difficult to operate. Because the standard mainsheet cleat rides on the traveler car, trimming the sheet pulls the car to weather. After a season or two of foot traffic, the Igloo cooler lid disintegrates.
The boat has no positive flotation and has capsized in severe conditions. It floats on its side with the companionway clear, but if a leeward cockpit locker is left open, water can rush below and sink the boat. A later bulkhead was added to seal the lockers from the cabin.
Refits and Ownership
One-design rules keep older, well-maintained hulls competitive. Serious racers spend between five hundred and one thousand dollars to have the keel professionally faired to minimum dimensions for an edge. Many sailors also move the cockpit winches forward so the genoa trimmer can face ahead through a tack.
The factory’s optional outboard bracket uses a spring-loaded hinge for easy engine mounting. Class rules require a minimum 3.5 hp outboard. That is the only power option, as an inboard is neither feasible nor available.
The original single-axle trailer was barely adequate for the intended 2,800-pound boat and unsuitable for the later 3,100-pound class minimum. A double-axle trailer is now offered.
The builder doesn’t supply sails, leaving tuning to commercial sailmakers and the class.
The Verdict
The J/24 is a pure racing one-design that turned weekend sailing into a global class. Its light balsa-cored construction, sensitive fractional rig, and documented light-air speed make it a sharp racing tool. Early-production defects—including bulkhead delamination, vermiculite keel sumps, fractured hatches, and cracked pintles—demand careful hull selection. This is a boat best suited to racing rather than cruising comfort.
Pros
- Renowned light-air performance
- Easy to rig and highly maneuverable
- Proprietary one-design supervision helps keep older hulls competitive
- Stiff, light, quiet balsa-sandwich hull and deck
- Balances and sails upwind under mainsail alone
Cons
- Early boats have documented hull-to-deck leaks, bulkhead delamination, and vermiculite keel-sump problems
- Small, uncomfortable cockpit with a low boom and poor visibility under the genoa
- No positive flotation, with a risk of sinking if a cockpit locker opens during a capsize
- Cramped interior, no fitted head, and an icebox lid that fails under foot traffic
