J-Boats J/45 Sailboat Review, Specs, and Listings

Design and Hull Form

The J/45's hull form is a study in evolutionary moderation rather than fashion-chasing. SAIL Magazine found the design superbly balances modern trends against the builder's longstanding performance emphasis. The fine bow and modest freeboard keep the profile low and purposeful, while the absence of hard chines and the tapered aft sections mean the boat heels a bit more and won't surf quite as readily in strong downwind conditions as some modern designs—but it promises better all-around performance, particularly in light to moderate air, with a smoother, more efficient motion going upwind, as SAIL Magazine reported. The easily driven hull, confirmed in testing, translates that moderation into real speed: under mainsail alone in 12–16 knots true, the boat carried better than 8 knots on a reach and could pinch to 30 degrees off apparent wind while still moving over 4 knots, and with jib and main she exceeded 9 knots on a beam reach.

Construction

The structure pairs a cored sandwich with a fully bonded internal skeleton. Hull and deck are cored with PVC foam of varying densities—or Corecell with vinylester resin per the other review—all vacuum-infused in one shot using the proprietary SCRIMP system, a method J/Boats and TPI pioneered in 1990. The internal load-bearing structure consists of a composite grid and composite bulkheads, all fully bonded to the hull, with the grid carrying mast, rig, and engine loads. Laminate supporting the L-shaped fin keel, which is cast iron with a lead bulb, is all solid, giving a secure foundation for the 9,150-pound ballast package.

Rig and Handling

A fractional sloop with a carbon-fiber spar and in-boom roller furler, the J/45 carries 1,303 square feet of sail area on standard rod rigging, with fiber rigging available as an upgrade. The mainsail is controlled by a double-ended German-style mainsheet with tails reachable from either wheel, jib-sheet fairleads adjust from the cockpit, and friction-ring inhaulers led aft let racers tune sheeting angles. Helm feel is light and positive with the perfect amount of weather helm, and like any good performance boat the J/45 is sensitive to sail trim. The deep single rudder is very grippy—far enough aft to turn the boat authoritatively but just forward enough to stay clear of turbulent transom flow—and testers found it responded immediately to any move. Under power, the 75-hp Volvo diesel on a saildrive pushed the boat at 9 knots flat out and 7.6 knots at a moderate cruise.

Accommodations

Below, French designer Isabelle Racoupeau refined a sleek, very open, modern look that remains fundamentally purposeful. The saloon has a dining table with U-shaped seating to port and a settee opposite; a full nav station sits to starboard, and the galley is aft to port with a large centerline sink. Long straight settees double as sea berths and plenty of handholds run through the accommodation. Overall volume is necessarily reduced by the moderate beam, particularly aft, yet the boat does not feel cramped. Twin aft staterooms are the largest yet on a J/Boat per the builder's claim, and deleting the starboard one yields a larger head with a proper shower stall and big storage; a three-stateroom, two-head layout or a two-stateroom version are both offered, with pipe berths above the after doubles and a forward owner's en suite.

The Verdict

The J/45 is a genuinely dual-purpose 45-footer: a light-air performer with a grippy rudder and clean cockpit systems that can also cross oceans, wrapped in a low-freeboard hull the tester called strikingly handsome. The interior trades volume for purpose, and the infusion-built structure is serious.

Pros