J/88 Speedster Technical Sailboat Specifications (2024)

Construction
• 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.

Electrical
• 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.

Interior
• 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.

Options
• 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)

FAQs

How long is a J88 sailboat? ›

J/88 truly hits the sweet-spot in J Boats' new generation of performance sprit boats. This mid-sized 29' (8.8m) family speedster is fast, fun and stable with the security and comfort of a sit-in co*ckpit, inboard diesel, overnighting interior and onboard head.

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.

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 big were J boats? ›

All J/Boat designs are monohull, sloop-rigged keelboats constructed of cored sandwich fiberglass. The current product line consists of eight models, ranging from the J/70 to the J/122E, ranging in length from 22.75 to 40 ft (6.9 to 12.2 m).

How much does a j88 sailboat weight? ›

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

What is the J measurement on a sailboat? ›

Rig Dimensions
LOALength Overall - overall tip-to-tip length of the boat
JBase of the foretriangle measured from the front of the mast to the intersection of the forestay and deck
J2Base of staysail triangle
PLuff length of the mainsail
EFoot length of the mainsail
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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).

Why does a bigger sail make a boat go faster? ›

They act to form a larger wing, or airfoil, around which the wind must pass. The total length around the outside has also increased and the difference in air speed between windward and leeward sides of the two sails is greater, resulting in more lift.

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 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.

Why does a sailboat need a keel physics? ›

The wind pushes you forward at the same time as the water resists it. The keel is making sure you're not going sideways. The flat surface and its perpendicular position to the deck make it possible. When the wind pushes the sail in one direction, the keel goes the opposite way.

What does J class mean in sailing? ›

The J Class

J Class yachts were originally built to the specifications of the Universal Rule. The J Class really represents the golden age of racing for the America's Cup in the 1930s when this Universal Rule was used as the determining measurement system.

How many J-boats are there? ›

In total nine J Class yachts are currently active, including three original surviving Js - Velsheda, Shamrock and Endeavour - and six replicas that have been built since 2003; Ranger, Rainbow, Hanuman, Lionheart, Topaz and Svea.

Who owns J-boats? ›

The Johnstone family has made an undeniable mark on the sailing world. In addition to the 5,500 J/24s cruising the waves, there are over 9,500 more J/Boats, ranging from the International J/22 to the J/65, that sailing enthusiasts have bought at prices ranging from $10,000 to $2,000,000.

How long is an 8 meter sailboat? ›

"Eight metre" in class name does not, somewhat confusingly, refer to length of the boat, but product of the formula. 8mR boats are on average some 15 metres long. Between 1907 and 2008 approximately 500 8mR boats were built, 177 of them have survived until today.

How long are J class sailboats? ›

J Class examples

from 65 to 76 feet (20 to 23 m). Length overall (LOA) of the yachts ranged from 119 to 139 feet (36 to 42 m). Sail areas of the yachts ranged from 7,288 to 7,651 square feet (677.1 to 710.8 m2).

How long is a j80 sailboat? ›

Technical specifications
LOA8.50m
Hull length8.00m
Waterline length7.50m
Maximum beam2.49m
Draught1.50m
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How long is a flying junior sailboat? ›

The FJ, or Flying Junior, is a fast little sailing dinghy. These boats were originally designed for training Olympic sailors. At 13' 3” long, the FJ has a beam of 4'11” and an overall sail area of 100 square feet. These dimensions make the FJ an ideal class to teach young sailors the skills of boat handling and racing.

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