J-Boats J/122 Sailboat Review, Specs, and Listings

Johnstone·2008·J Boats
J-Boats J/122 drawingBuilder drawing
Hull Type
Monohull · bulb
Rig
Fractional Sloop
LOA
40' · 12.19 m
Disp.
14,900 lbs · 6,759 kg
First year
2008

The J/122 is a 40foot cruiserracer designed by Alan Johnstone and built in France by J/Europe at Les Sables d’Olonne. It combines a performance hull with a genuinely livable interior. Introduced as a new design from J/Boats and conceived for both cruising and racing, it promises comfort in port and the hardware needed around the buoys. The builder also notes that it’s intended to carry some weight without sacrificing pace.

Measurements

Dimensions 01

Length Overall
40 ft
Length on deck
—
Waterline Length
34.6 ft
Beam
11.91 ft
Draft
7.22 ft
Maximum Headroom
—
Air Draft
—

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Bulb
Rudder
1× Spade
Ballast
5,600 lbs (Lead)
Displacement
14,900 lbs
Water Capacity
42 gal
Fuel Capacity
35 gal

Rig & sails 03

Rigging Type
Fractional Sloop
Mainsail luff
51.34 ft
Mainsail foot
17.57 ft
Foretriangle height
54.42 ft
Foretriangle base
15.2 ft
Forestay Length (estimated)
56.5 ft
Sail Area
865 sqft

Calculations 04

Sail Area to Displacement Ratio
22.85
Ballast to Displacement Ratio
37.58
Displacement to Length Ratio
160.59
Comfort Ratio
23.46
Capsize Screening Ratio
1.94
Hull Speed
7.88 kn

Design and Construction

The J/122 displaces 14,900 pounds on a 34-foot-6-inch waterline. Its light-to-moderate displacement, minimal overhangs, and slippery, flat-bottomed hull explain its low displacement-length ratio of 161. The iron keel fin carries a 5,600-pound lead bulb, giving a ballast ratio of nearly 38 percent. Draft is 7 feet 2 inches, which limits shallow-water cruising.

The hull and deck are molded using the SCRIMP resin-infusion system. The hull has an end-grain balsa core, while the deck uses foam, both sandwiched between skins of E-glass and vinylester resin. The hull-deck joint is an inward-turning flange with a primary bond that relies almost exclusively on Plexus. Bulkheads are laminated to the hull and deck for structural continuity.

A high bridgedeck protects the cabin from downflooding. The boat comes with a 10-year osmosis warranty and a 5-year structural warranty.

Rig and Sail Handling

A swept-back, double-spreader Hall Spars carbon-fiber rig and retractable carbon-fiber bowsprit are standard. The rig has a wide shroud base, with chainplates tied to the rail so the spreaders can be longer and the mast lighter. The jib sheets inside the shrouds, and the headsail’s furling drum sits belowdeck.

Halyards and reefing lines lead aft to the cabintop, where Spinlock XCS rope clutches and two Harken 44.2 STA halyard winches keep them organized. The 2:1 end-boom mainsheet runs through two Harken 46.2 STA mainsheet winches and a flush-mounted 6:1 traveler forward of the wheel.

Test sailors found that the boat had a crisp, stiff feel and is exceptionally well balanced. It showed almost no weather helm upwind and had a tight turning radius under both sail and power. Reefing with the two-line setup was a snap. Off the wind, three crew flew and gybed the A-sail from the cockpit, easily making 9.1 to 9.3 knots in 11 to 13 knots of breeze.

Cockpit and Deck

The cockpit is more than 12 feet long, with two foot braces molded into the floor behind the large wheel. Sight lines are clear from several helm positions. Two large side lockers and a sole locker abaft the wheel provide gear stowage, and most of the deck hardware is by Harken.

The molded fiberglass foredeck toerails are IRC-legal, while stainless-steel handrails run along the cabintop. The transom is open, but an optional removable dock box can close it off. Cruisers will likely want this feature for a more enclosed cockpit, and the box will probably house the life raft.

Accommodations

The standard interior has three cabins and one head. A more traditional optional cruising layout provides two cabins and two heads; it also adds a head convenient to the watch and a generous garage aft.

Both layouts place a forward-facing navigation station to port. The saloon settees run parallel to the centerline, with swing-up pilot berths that keep resting crew amidships. The two aft double cabins can serve as sea berths offshore and private quarters in port.

Mahogany woodwork and molded white wood hull lining pair with a light-colored synthetic antiskid sole to create an airy interior. A removable molded modular headliner makes it easier to reach deck fittings.

The efficient U-shaped galley includes deep sinks near the centerline, a three-burner stove and oven, and substantial, practical fiddles. Fuel and water tanks sit beneath the settees. Headroom is 6 feet 4 inches in the saloon, 6 feet 3 inches aft, and 6 feet 2 inches forward.

Performance

Cruising World judged the J/122 to be a performance-oriented boat. Testers easily made speeds in the low-to-mid 7-knot range to weather in 8.5 to 9 knots of apparent wind while sailing tight angles.

Under power, the standard Volvo D2 40-horsepower saildrive drove the boat at more than 8 knots at 2,200 RPM. IRC handicap ratings range from 1.096 to 1.010, while PHRF ratings run from 36 to 39, confirming the boat’s dual-purpose intent.

The Verdict

The J/122 succeeds as a true cruiser-racer. Its resin-infused, well-warrantied hull carries a stiff carbon rig and delivers a balanced helm, while the light, practical interior provides three cabins in the standard layout. It’s quick upwind and faster off the wind, yet remains equipped for extended cruising with sensible tankage and usable sea berths.

Pros

  • Stiff, well-balanced handling with minimal weather helm
  • Infused balsa-and-foam construction with strong warranties
  • Genuine cruising interior with sea berths and a forward-facing navigation station
  • IRC and PHRF ratings suited to racing

Cons

  • 7-foot-2-inch draft limits shallow-water cruising
  • Open transom requires the optional dock box for closed-cockpit cruising

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