J-Boats J/160 Sailboat Review, Specs, and Listings

Johnstone·1996 – 2000·~35 hulls·J Boats Tillotson Pearson
J-Boats J/160 drawingBuilder drawing
Hull Type
Monohull · bulb
Rig
Fractional Sloop
LOA
52.7' · 16.06 m
Disp.
31,200 lbs · 14,152 kg
First year
1996

The J/160 stands as one of the more considered expressions of the performancecruiser idea, a 52foot 8inch monohull drawn by Rod Johnstone and built by TPI using the SCRIMP resininfusion molding technique that J/Boats had helped pioneer earlier in the decade. With only 35 built between 1996 and 2000, she is a scarce but coherent design: light for her length at 31,200 pounds displacement, carrying 12,000 pounds of lead ballast on a 7foot bulb keel, and rigged as a fractional sloop with a sail area that delivers a sailingtrim SA/D around 25. She is a longer, lighter cruising boat that asks to be sailed, not merely motored.

Measurements

Dimensions 01

Length Overall
52.7 ft
Length on deck
Waterline Length
47.5 ft
Beam
14.5 ft
Draft
7 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Bulb
Rudder
1× Spade
Ballast
12,000 lbs (Lead)
Displacement
31,200 lbs
Water Capacity
150 gal
Fuel Capacity
75 gal

Rig & sails 03

Rigging Type
Fractional Sloop
Mainsail luff
62 ft
Mainsail foot
24.16 ft
Foretriangle height
66.5 ft
Foretriangle base
18.83 ft
Forestay Length (estimated)
69.11 ft
Sail Area
1,376 sqft

Calculations 04

Sail Area to Displacement Ratio
22.21
Ballast to Displacement Ratio
38.46
Displacement to Length Ratio
129.96
Comfort Ratio
27.92
Capsize Screening Ratio
1.84
Hull Speed
9.24 kn

Design and Construction

The hull reads as a deliberate departure from traditional cruiser proportions. The beam is held to 14 feet 6 inches, the ends are cut off for maximum design waterline, and the freeboard is moderately low, giving her a strong sheerline and clipped overhangs that Cruising World described as modern and elegant anchor. Below the waterline the hull shows a fine entry, short overhangs, moderate topside flare, and a low-wetted-surface underbody that supports her speed potential. Construction emphasizes light weight through TPI's signature SCRIMP resin-infusion molding, with hull and deck cored in Baltek end-grain balsa and solid glass at critical structural junctures such as the chainplate attachments anchor. All bulkheads are tabbed on both sides, and the hull-to-deck joint uses an in-turned flange sealed with structural sealant and fastened mechanically every four inches. The keels are externally mounted. The rudder is a balanced high-aspect spade pushed as far aft as possible without going outboard, its stock positioned out from under the cockpit sole to spread the bearings for strength. Perry's review noted very wide side decks and a big cockpit whose coamings are cut away aft to open the whole deck to the helmsman anchor. The builder claimed a 10-year hull warranty against blistering and a yacht built to exceed the Offshore Yacht Service standards of ABS.

Rig and Handling

The standard rig is a Hall triple-spreader aluminum mast with a forward position and a big, low-aspect-ratio mainsail, paired with a comparatively small, high-aspect-ratio foretriangle; a Hall carbon-fiber rig is offered as a tempting, expensive option. A small amount of sweep in the spreaders helps stiffen the mast, and runners are shown along with the swept spreaders. The deck plan carries toe rails forward, changing to flat tracks past the second stanchion, and halyards are led aft to winches adjacent to the companionway. Trimming the main is unconstrained thanks to a 6:1 Lewmar Ocean Racing mainsheet traveler system, and the wheel and traveler sit far enough aft to allow a reasonable dodger to extend over the forward cockpit. A dropped headstay makes room for the spinnaker sock, with the spinnaker hoisted to the masthead and managed through a cockpit-operated snuffer; a retractable pole disguised as a bowsprit serves an asymmetrical spinnaker. The large 66-inch wheel sits outboard, and a scoop transom makes boarding from water, dinghy, or dock convenient.

Accommodations

The length overall gives room for three staterooms with more than adequate privacy. Aft of the companionway lie two staterooms with 48-inch-wide berths, one accessible to an after head with sink and shower. The owner's cabin forward has its own private head with shower. The interior is offered in all-teak or all-cherry wood with off-white laminate to promote an open sensation. Just forward of the companionway to port is a roomy J-shaped galley with a double sink close to centerline, a gimbaled three-burner Force 10 stove outboard, and 12.5 cubic feet of icebox capacity. Opposite sits a forward-facing nav station. The main saloon has a settee berth to starboard and a full-size pilot berth outboard of the oval dining settee to port. A large bow storage locker with overhead deck hatch swallows sails, ground tackle, and gear.

Performance

A turbo-charged 88-horsepower Yanmar tied to a 22-inch Martec folding prop delivers a comfortable and quiet cruising speed of 8 knots plus. With the speed potential and reduced canoe body rocker, Perry cautioned that she may pound from time to time. Stability is a genuine strength: the limit of positive stability is a whopping 140 degrees per the designer, and a respectable 125 degrees by IMS calculations anchor.

Known Issues

The reduced canoe body rocker that gives her speed also causes pounding from time to time in a seaway, a consequence of the hull form rather than a construction fault. The balsa-cored hull and deck place ordinary demands on bedding and sealant at through-hulls; the builder addressed this with tagged seacocks and double-clamped below-waterline hoses, but the core itself remains a material that suffers if water intrudes. The 10-year blister warranty speaks to the infused solid-glass outer skin's intended durability.

The Verdict

The J/160 is a focused performance cruiser that trades some traditional cruising volume for lightness, speed, and stiff, predictable behavior offshore. She rewards a sailor who wants to cover ground and sleep privately, and who accepts occasional pounding as the price of the hull's long waterline and low wetted surface.

Pros

  • High limit of positive stability (140° designer / 125° IMS)
  • Light, strong SCRIMP-infused balsa-cored construction with structural sealant hull-deck joint
  • Three private staterooms with wide aft berths and a forward owner's suite
  • Quiet 8-knot-plus cruising on an 88-hp Yanmar with folding prop

Cons

  • May pound in a seaway due to reduced rocker and speed potential
  • Balsa core demands vigilant through-hull and deck-penetration maintenance
  • Only 35 built, limiting familiarity with spares and systems

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