J/88 Speedster Technical Sailboat Specifications (2024)

• J/88 hull & deck infusion molded with biaxial and unidirectional E-glass fabrics and balsa core in the hull for rugged durability and Corecell foam core in the deck for light weight. High density core material and additional glass reinforcements are placed in way of highly loaded hardware and components.
• Molded internal bulkheads and liners finished with gelcoat, bonded and/or tabbed to the hull and/or deck.
• White gelcoat hull.
• Infused GRP molded structural grid with longitudinal and transverse keel support beams.
• One large co*ckpit seat storage locker.
• Open transom for easy access with lightweight ORC transom safety ladder.
• High strength, inward turning and overlapping hull to deck joint bonded with structural adhesive.
• White gelcoat deck with molded non-skid on horizontal deck surfaces.
• Molded ISO/ORC height foredeck toe-rails on deck.
• Large self-draining co*ckpit with molded secure helmsman foot braces in co*ckpit.
• 6.5’ draft low VCG keel with lead ballast featuring molded GRP finish.

Engine, Steering & Systems
• 13hp, two cylinder Volvo D1-13 diesel engine with 115amp alternator and Saildrive SD-20 leg.
• Keyless start/stop engine panel and tachometer with alarms and engine hour counter.
• Geared 2-bladed bronze folding prop.
• Engine single throttle control with neutral safety switch.
• Waterlock muffler with exhaust run aft to transom.
• 10 gal fuel tank.
• High aspect transom mounted rudder with custom SS gudgeon hardware.
• Custom molded composite tiller in white gelcoat finish.
• Adjustable tiller extension with handle.
• co*ckpit operated manual bilge pump operable from the helm position plumbed to transom fitting.

• One AGM 75amp battery (option for 2nd battery).
• 12V DC On/Off battery switch.
• 12V DC electrical distribution panel w/ 6 circuit breakers.
• LED navigation lights.
• UL approved stranded, tinned copper ABYC color-coded wiring.
• Bonding system to meet ABYC regulations.
• Two reading lights in main cabin, 1 in V-berth area.
• Automatic electric bilge pump and panel switch for manual operation.

Deck Hardware
• Low maintenance stainless grab rails on cabin house (P&S).
• Companionway opening with PVC slider tracks, large gutter drains, molded seahood and sliding cover.
• Acrylic offshore removable drop board with inside/outside lockable hasp.
• SS custom fabricated chain plates for shrouds and headstay terminations.
• Foredeck skylight hatch mounted on cabin house forward of mast.
• Two fixed cabin side portlights.
• Two aluminum 2-speed 40:1 self-tailing primary winches in co*ckpit.
• Two aluminum 2-speed 30:1 self-tailing secondary winches on cabin top.
• Two winch handles.
• co*ckpit operated Harken adjustable jib car and 4:1 in-hauler systems to P&S.
• 6:1 Mainsheet system leading to ratchet block and cam mounted on centerline swivel cam base aft of traveler.
• 18:1 mainsheet fine-tune adjuster mounted to swivel base cam forward of traveler.
• Adjustable mainsheet traveler with 4:1 control line and cam cleats P & S.
• 24:1 Double ended backstay adjuster purchase system leading forward to P & S cam cleats.
• Internal bowsprit launching system to exit aft face of the cabin house to cam cleat.
• Harken underdeck headsail furling system with black anodized foil and control line on cabinside mounted cam cleat.
• Spinnaker tack line side mounted rope clutch mounted to starboard on cabin side.
• Spinnaker sheet blocks outboard of primary winches on stanchion bases and aft at stern rail.
• Halyard lead blocks mounted at mast base, halyard organizers and double Antal Vcam rope clutches one per side.
• SS stanchions, two SS stern rails at transom corners and custom SS bow rail with 9.5" lower lifeline height.
• SS double lifelines.
• Foredeck and transom mooring cleats.

Spars & Rigging
• Carbon fiber mast with double swept spreaders, long masthead crane and mainsail luff track. Deck step design and SS tabernacle system. Mast finished in satin black with contrasting white bands.
• Boom with internal 8:1 outhaul, mainsheet attachment points, outhaul and single reef sheaves as well as provision for reef cleat and block at inboard end. Finished in satin black with contrasting white bands.
• Carbon bow sprit with tack ferrule fitting, painted black finish. Bow sprit seal system mounted between sprit bearings.
• 1 x 19 compacted strand wire headstay & side rigging with adjustable open-body turnbuckles, and DSK78 Ultra Wire backstay.
• Running rigging package including 1 main halyard, 1 jib halyard, 1 spinnaker halyard, I set of spinnaker sheets, 1 set of jib sheets, rough/fine tune mainsheet, tack line, backstay, traveler lines, reef line, inhauler and jib lead adjuster controls, and pole outhaul.

• Molded main salon liner with full length settee berths, molded backrests, storage access bin in backrests and below cushions. Molded areas for sink (forward to port) and hinged utility counter (forward to starboard).
• Choice of fabrics for 3" standard main salon cushions.
• Synthetic high-wear cabin sole in main cabin with centerline access to bilge.
• Fabricated companionway ladder with teak treads.
• Molded V-berth and hull support liner. (Option for V-berth platform & cushions)
• Head compartment with portable toilet and deck pump out fitting.
• Bin storage opposite head.
• Molded co*ckpit support liner surrounding engine and mechanicals with foam insulated engine area.
• Three engine access hatches.
• Low maintenance painted gelcoat finish on all interior hull & deck surfaces.
• Black anodized aluminum compression post to transfer mast loads to internal hull structure.
• Soft storage bags on hulls sides in main cabin.

• Opening ports on aft end of cabin facing the co*ckpit.
• Wide Opening lifeline gates (P&S).
• V-berth Package with platform, two cushions and one swiveling reading light.
• 110V 30 amp shore power with battery charger.
• Additional AGM battery.

NOTICE: This is a sample specification. Please consult your J/Dealer or J/Boats for the current specification.

J/88 Speedster Technical Sailboat Specifications (2024)


How many crews for J88? ›

J/88 Class Association

With maximum crew of six and strict sail limitations, the class rules help to keep costs under control and attracts sailors looking for a rewarding one design experience in a boat that also passes the all important family sailing test.

How do you calculate the force of a sail? ›

Wind Force = Wind Pressure* Sail Area. The greater the wind pressure and the greater the area of the sail, the greater the wind force.

How fast is the j80 sailboat? ›

The design has a hull speed of 6.29 kn (11.65 km/h).

What is the Bernoulli principle of sailboats? ›

Bernoulli's principle is a scientific principle stating that as the speed of a moving fluid or gas increases (or decreases), the pressure within the fluid decreases (or increases). It's the guiding principle behind the physics of lift. By sailing closer to the wind, a boat will generate more aerodynamic lift.

How long is a J88 sailboat? ›

Length (feet/inches): 29.19 Ft. Beam: 9.6 Ft. Weight of rigged boat without sails: 4,990 lbs. Draft: 6.5 Ft.

What is a J88 sailboat? ›

From the J design/build team that launched the J/70 and J/111, comes the NEW J/88, a 29' mid-size family speedster with stability, style and sailing comfort.

What is the equation for sailing? ›

The equation vw = vb + vr tells us the problem: as the boat speed approaches the wind speed, the relative wind drops towards zero and so there is no force on the sail. So you can't go faster than the wind. When the wind is at an angle, we have to add the arrows representing these velocities (vector addition).

How do you calculate sailing speed? ›

For a full-displacement (non-planing) hull, the formula for boat speed in knots is 1.34 x the square root of the waterline length in feet, or 2.43 x the square root of the waterline length in meters.

What is the physics behind sailing? ›

Named for Dutch mathematician Daniel Bernoulli, Bernoulli's principle states that the speed of a fluid is relative to pressure. When the flow rate of a fluid increases, pressure lowers, and vice versa. To generate lift, the sail and keel must be able to regulate the flow rate of both air and water.

How much does a J80 cost? ›

The starting price is $29,900, the most expensive is $32,000, and the average price of $30,950. Related boats include the following models: J/100, J/105 and J/160. Boat Trader works with thousands of boat dealers and brokers to bring you one of the largest collections of J Boats J 80 boats on the market.

How much is a new J80 sailboat? ›

The J/80 is slightly less expensive. At $33,200, it is priced $2,250 less than the Melges.

What is the fastest sailboat of all time? ›

Instantaneous speed record

The highest speed ever reported is from the crew of Vestas Sailrocket 2 : on 24 November 2012 they recorded a top speed of 68.33 knots in a 25–29-knot wind. Previously, the highest speed ever reported was from the crew of l'Hydroptère.

What is the best angle for wind and sails? ›

About the best angle of the wind that most sailboats can achieve is 30 degrees. Any less than this and the wing shape of the sail begins to deflate.

What is the capsize formula for sailboat? ›

The capsize screening formula (CSF) is a controversial method of establishing the ability of boats to resist capsizing. It is defined for sailboats as: Beam / ((Displacement/64.2)1/3), with Displacement measured in pounds, and Beam in feet.

What makes a sailboat fast? ›

Speed is determined by the ratio of power developed by the sail over power lost through various forms of drag (e.g. surface drag and aerodynamic drag). Ideally a smaller sail is better, as speeds increase.

How is the formula for force calculated? ›

What is the basic equation for force? The basic equation of force is F = ma which states that the net force acting on an object is equal to the product of mass and acceleration. In short, it is force equals mass times acceleration.

How do you calculate the amount of force? ›

The force formula is defined by Newton's second law of motion: Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a.

What are the forces acting on a sail? ›

The two main forces acting on a stationary sailboat are gravity and buoyancy. In order for the boat to move, the force of wind pushes on the sail and causes the boat to move. The forces are now unbalanced, which is noticeable by the boat's movement.

What is the formula for calculating wind force? ›

Armed with pressure and drag data, you can find the wind load using the following formula: force = area x pressure x Cd. Using the example of a flat section of a structure, the area – or length x width – can be set to 1 square foot, resulting in a wind load of 1 x 25.6 x 2 = 51.2 psf for a 100-mph wind.

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