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J Boats

J Boats

The J/Boats company had humble beginnings but over the past 40 years, they have built winning designs which are raced by movers and shakers in the marine industry and beyond. Rod Johnstone built the first J/24 in his garage in 1975 and by 1977, he and his brother Bob were in business building sleek boats that developed a reputation for being crazy-fast. Today, the Rhode Island company builds boats from 22 to 65 feet for day sailing, cruising and mostly one-design racing. Any serious racer will know J/Boats and many will have owned one at some point. J/Boats are precision machines that command a premium price and will range from $10,000 to $2,000,000, and have sprouted a performance sailing school called J World with five bases around the country.

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2013 J Boats J/105

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  • Boat Summary
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Boat Description

When your home is near the water, J/105 may be your ideal sailboat. Count up the number of nights spent sleeping aboard and compare that to the number of picnic sails when you would have liked a larger, more comfortable cockpit. J/105 is the answer. Her large cockpit combined with simple 4-5 berth week-ending layout results in two significant owner benefits: (1) A savings of $50,000 in little-used furniture, systems and cabinetry needed for extended cruising, and (2) A boat that's easier to handle, more comfortable in waves and more fun to sail for its size. J/105 has the stability, rig and sail controls to handle 15-20 knot winds without the need of reefing. It has the strength and seaworthiness for ocean going passages. Sailing World Magazine's panel of experts selected J/105 as Boat-of-the-Year among racer-cruisers in 1992. Since then over 630 have been launched worldwide, fulfilling a variety of needs. Enthusiasm for this great boat continues to blossom with an active owner's association and owner maintained web site to help you get the most from your boat. J/105 is the most successful modern one-design keelboat class over 30' in the World. There are one-design starts in virtually every major sailing center across the US and several class starts across Europe. Single handed sailors have raced and cruised to Bermuda; an older couple enjoys cruising in Maine and winning the Monhegan Race after giving up their Alden 54; and America's Cup helmsman race for prize money around the country in a professional match racing circuit. "A gust of wind, blowing about 25 mph, accelerated the J/105 up to a sustained speed of over 14 knots." J/105 makes sailing easier and smoother. No pitching, no rolling about and no panic drills. You may never have to leave her comfortable cockpit. Gone are feverish routines of course and sail changes. Enjoy the luxury of a dodger while napping on full-length cockpit cushions. Only one jib to tend. Roll it in or out. The spinnaker is contained in a snuffer. Jibing is a one person operation. Simply let go the old sheet, then trim in the new one. Good-bye big racing crews and foredeck work. Hello fun and relaxation. Whether blowing 5 mph or 20 mph, you will want to set J/105's asymmetric spinnaker - even with just two people aboard! It adds a new dimension to sailing enjoyment: It's (1) safer with total snuffing or partial quick-reefing from the cockpit, (2) easier with one person controlling all sails, (3) smoother with a better-balanced sailplan which helps you steer out of trouble, (4) stiffer due to a low VCG and the spinnaker's lower center of area and flat, open leech, and (5) faster over waves thanks to the power and lift of this unique spinnaker design.



Boat Details
Beam 11 ftMax Draft 6 ft 5 in
Dry Weight 7750 lbHull Material Fiberglass
Hull Shape MonohullFuel Capacity 12 gal
Length at Waterline 29 ft 5 inLength Overall 34 ft 5 in
Water Capacity 5 gal   
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Sail Area


I : 40.50 ft
J : 13.33 ft
P : 41.33 ft
E : 14.50 ft
Working Sail Area : 577.00 sq ft

Additional Specifications

    Hull and Deck
  • Lloyd's approved, aircraft grade AL600 epoxy coated CK57 (6 lbs./cu.ft.) Baltek end-grained balsa laminate construction using biaxial glass fabrics and vacuum bag molding techniques. An Interplastic vinylester resin barrier coat allows a ten-year hull warranty against blisters.
  • White (other colors optional) gel coat hull with single (1.50" to 3.00") tapered bootstripe.
  • Large sit-in cockpit with 6.5' seats with backrests, suitable for cockpit cushions.
  • One lazarette storage locker and two cockpit seat storage lockers w/flush spring loaded latches.
  • Swimming and boarding platform sculptured into aft face of full height transom with integral ladder.
  • Cockpit coamings 2.5" high over sidedecks to channel water aft.
  • Molded companionway slide-in seahood w/dodger boss/instrument pod.
  • ORC size molded-in foredeck toe-rails.
  • Stainless steel handrails on cabin trunk.
  • GRP molded main structural bulkhead, bonded fore and aft on hull and deck as support for shroud chainplates with single opening to forepeak.
  • Fore and aft and transverse keel support beams vacuum bagged to hull.
  • Fabricated aluminum mast step with transverse beams fastened to main bulkhead.
  • Faired Lead and antimony fixed 6.5' draft, fin keel with bulb bolted to a deep molded stub. (5.5' shoal draft option)

    Mechanical and Steering

  • Yanmar 3YM20 20 hp, 3 cylinder, diesel engine with 80 amp alternator and two-blade 15" Martec folding prop with #2 Martec hub.
  • Yanmar engine instrument panel in cockpit with acrylic cover.
  • Vetus engine throttle control with neutral safety switch.
  • 12-gallon alloy fuel tank with baffles and inspection/clean out port.
  • Balanced spade rudder constructed using "E" glass and large diameter shaft mounted in PYI rudder bearings.
  • Composite tiller with Spinlock hiking handle.

    Deck Hardware

  • Harken Unit-1 headsail furler.
  • Two Harken 44.2AST, 2 speed primary winches with 44:1 power ratio.
  • Two Harken 33.2AST, 2 speed secondary winches on cabin trunk.
  • Double sheave deck organizers (PandS) recessed in dodger spray shield molding.
  • Two lock-in winch handles (10").
  • Two PVC winch handle holders
  • Aluminum mast collar.
  • 4 mast mounted turning blocks
  • Two Spinlock double rope clutches aft on the cabin top. Port is main halyard and jib halyard. Starboard is for cunningham/reef and spinnaker halyard.
  • Two Harken 1997 jib sheet cars on a 3 foot 32mm clear anodized "T" track (PandS) with aft end stops.
  • One Harken camcleat for headsail furler.
  • One Spinlock side mounted rope clutch for spinnaker tack line.
  • Harken mid-sized traveler track recessed in cockpit seat with Harken 4:1 system using #1625 car with #1515 control blocks and #1631 end controls. Control lines pass through Harken 222A big bullets and cleat to Harken 150 cams in line with traveler.
  • 6:1 racing mainsheet system using Harken single and double blocks on separate boom bales and a fiddle block on the traveler car with coarse adjustment sheet tail led to a center-mounted heavy duty swivel base with camcleat and single ratchet aft of traveler; and a 24:1 fine tune system achieved by adding 4:1 tackle attached to mainsheet end and cleated to a swivel base with camcleat on front side of traveler.
  • Custom double-rail stainless bow pulpit and dual corner stern rails with transom gate.
  • Low profile mounted roller furling drum system on stemhead with control line aft to port side of cabin trunk where tail can be used on primary winch.
  • Tapered lifeline stanchions with heavy duty deck plates.
  • Four 4-bolt mooring cleats.
  • Single Harken1963 foot blocks to lead spinnaker sheets to the cockpit or cabin house.
  • Harken cams for lazy