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Find parts on your J/105 Close guideOpen guide

Tap a numbered point or part name to identify a system and browse its parts.

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Full boat

J/105 side-view illustration showing the mast, mainsail, headsail, standing rigging, boom, rudder and fixed keel.
J/105 · Illustrated guideEnlarge diagram

Illustration based on the J/Boats J/105 references. The asymmetric spinnaker is not shown; the bowsprit is extended for identification.

Rig details

J/105 lower-rig illustration based on the J/Boats profile. Select a numbered point or part name to browse options.

Scroll sideways to explore the numbered points, or choose a part below.

J/105 · Illustrated guideEnlarge diagram

Illustration based on the J/Boats J/105 references. The bowsprit is shown extended for identification. Hardware arrangements vary between boats. Wheel-equipped version shown.

Cockpit details

J/105 cockpit illustration showing the wheel, coarse and fine mainsheet controls, traveler, winches and vang. Select a numbered point to browse the related parts.

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J/105 · Illustrated guideEnlarge diagram

Illustration adapted from the Harken J/105 layout. Repeated fittings share a selector. This is a location guide; installed arrangements may vary. Wheel-equipped version shown; tiller versions also exist.

Deck details

J/105 overhead deck illustration showing traveler, steering wheel, winches, sail tracks, hatches and deck fittings. Paired fittings share a selector.

Scroll sideways to explore the numbered points, or choose a part below.

J/105 · Illustrated guideEnlarge diagram

Illustration based on the J/Boats J/105 references. Repeated fittings share a selector; selecting it highlights their locations.

Part 1 · Know your J/105

Mast

The fractional rig uses an aluminum mast with two spreader levels. Identify the mast section and installed fittings before choosing replacements.

91336 - Mast Fitting For Rigid Boom Vang
Example from our catalog 91336 - Mast Fitting For Rigid Boom Vang
Explore Mast

Part 2 · Know your J/105

Mainsail

The mainsail sits behind the mast. Confirm dimensions, attachment details and the class requirements for racing use.

View catalog example

Part 3 · Know your J/105

Jib

The jib works with the forestay and furling system. Check luff attachment, dimensions and the intended sail specification.

Explore Jib

Part 4 · Know your J/105

Standing rigging

Shrouds and stays support the mast. The original specification uses rod rigging; match the installed rods, terminals and adjusters.

View standing rigging

Part 5 · Know your J/105

Boom

The boom supports the mainsail and carries its controls. Match the section, end fittings and rig configuration.

View J/105 boom & mast fittings

Part 6 · Know your J/105

Spade rudder

The rudder blade sits beneath the hull. Match the blade, stock, bearings and steering connection to the specific J/105; this is not a transom-mounted rudder.

Browse J/105 spade rudder parts

Part 7 · Know your J/105

Fixed keel

The fixed fin and bulb provide ballast and lateral resistance. Deep and shoal-draft versions exist; identify the keel and hull before specifying parts.

Browse J/105 fixed keel parts

Part 8 · Know your J/105

Retractable bowsprit

The carbon bowsprit carries the asymmetric spinnaker tack. Match the tube, bearings and deployment fittings. It is extended here for identification; the spinnaker is not shown.

View catalog example

Part 9 · Know your J/105

Hydraulic backstay adjuster

The hydraulic adjuster changes backstay tension. Match pin diameters, stroke, closed length and rated load to the installed system.

View hydraulic adjusters

Part 10 · Know your J/105

Mainsheet purchase

The boom-mounted blocks work with the lower purchase and fine adjustment. Compare attachment points, sheave sizes and working loads.

View J/105 mainsheet & fine-tune options

Part 11 · Know your J/105

Mainsheet traveler

The traveler positions the mainsheet attachment across the cockpit. Match the track, car and control fittings as a system.

View traveler cars

Part 12 · Know your J/105

Boom vang

The rigid vang supports the boom and controls its rise. Match the support unit, tackle, mounting geometry and required loads.

View boom vangs

Part 13 · Know your J/105

Gooseneck

This joint connects the boom to the mast. Identify the exact mast bracket, boom end, pin and articulation before ordering.

Explore Gooseneck

Part 14 · Know your J/105

Shroud terminals & chainplates

The rod terminals connect the shrouds to structural deck fittings. Match the terminal system, pin sizes and chainplates to the boat.

Explore Shroud terminals & chainplates

Part 15 · Know your J/105

Jib furler

The drum, swivel, foils and headstay form the furling system. The catalog example is the drum package, box 1 of 2; it is not a complete kit.

View furling systems & components

Part 16 · Know your J/105

Primary winches

The cockpit winches handle loaded sheets. Compare the installed winches, gearing, mounting footprint and rope range before selecting a replacement.

View self-tailing winches

Part 17 · Know your J/105

Coachroof winches

These winches serve halyards and other sail controls. Match their mounting footprint, gearing, drum and rope range.

View self-tailing winches

Part 18 · Know your J/105

Stanchions & lifelines

The stanchions support the double lifelines. Compare height, tube diameter, bases and lifeline terminals with the boat.

View stanchions & bases

Part 19 · Know your J/105

Steering wheel

This guide shows the wheel-equipped version. Other J/105s use a tiller; wheel size, hub and pedestal parts must match the installed steering system.

View steering wheels

Part 20 · Know your J/105

Upper & lower mainsheet fiddles

The upper and lower fiddle blocks form the main purchase. Match both attachments, the two sheave sizes and the required working load.

View fiddle blocks

Part 21 · Know your J/105

Boom-mounted turning block

This single block redirects a line at the boom. Match its attachment, sheave size, rope diameter and load direction to the existing mainsheet layout.

View single blocks

Part 22 · Know your J/105

Fine-tune upper fiddle

The suspended fiddle forms the upper part of the mainsheet fine adjustment. Check the attachment, sheaves and line path.

View fiddle blocks

Part 23 · Know your J/105

Fine-tune lower ratchet fiddle

The lower fiddle adds ratchet control and a becket to the fine-tune purchase. Match the exact attachment and line-end arrangement.

View ratchet blocks

Part 24 · Know your J/105

Mainsheet ratchet block

The ratchet controls the loaded mainsheet before it reaches the cleat. Compare grip, operation, rope range and working load.

View ratchet blocks

Part 25 · Know your J/105

Swivel cleat bases

The rotating bases present the coarse and fine controls to the crew. Check base mounting, block connection, cleat height and any required adapter.

View swivel cleat bases

Part 26 · Know your J/105

Traveler car

The traveler car carries the mainsheet attachment and its controls. Match track profile, bearings, load rating and toggle configuration.

View traveler cars

Part 27 · Know your J/105

Traveler track

The transverse track guides the car across the cockpit. Check profile, supported span, fasteners and end fittings.

View traveler tracks

Part 28 · Know your J/105

Traveler control turning block

The stand-up block redirects a traveler control line. Match attachment, line diameter and the direction of load.

View single blocks

Part 29 · Know your J/105

Traveler control cam cleat

The cam cleat holds the traveler control. Match line size, mounting centers, fairlead and release angle.

View cam cleats

Part 30 · Know your J/105

Primary winches

The paired cockpit winches control loaded sheets. Compare the installed units and mounting footprint; the example is a product option, not confirmation of fit.

View self-tailing winches

Part 31 · Know your J/105

Coachroof winches

The paired coachroof winches work with halyards and control lines. Match the drum, gearing, installation and rope range.

View self-tailing winches

Part 32 · Know your J/105

Double footblock

The stacked footblock redirects sheets along the deck. Check both sheaves, mounting centers and the load from each line.

View cheek & foot blocks

Part 33 · Know your J/105

Vang tackle blocks

The upper fiddle and lower ratchet fiddle work with the rigid vang. This layout uses a lower block with a becket and integrated cam cleat; match the complete purchase.

View fiddle blocks

Part 34 · Know your J/105

Steering wheel & pedestal

The wheel connects through the pedestal and steering system to the rudder. Match the wheel hub and steering hardware; tiller-equipped J/105s use a different arrangement.

View steering wheels

Part 35 · Know your J/105

Steering wheel & pedestal

This overhead view uses the wheel configuration. Confirm wheel hub, pedestal and below-deck steering parts; tiller versions require different components.

View steering wheels

Part 36 · Know your J/105

Traveler assembly

The traveler spans the cockpit ahead of the helm. Match the car, track and end controls before choosing replacement parts.

View traveler cars

Part 37 · Know your J/105

Primary winches

The two cockpit winches handle the sheets. Compare the existing winches, load requirements, rope range and mounting footprint.

View self-tailing winches

Part 38 · Know your J/105

Coachroof winches

These two winches sit beside the companionway. Identify the installed model and the control lines it serves.

View self-tailing winches

Part 39 · Know your J/105

Jib tracks & lead cars

The paired tracks position the jib sheet leads. Match the track section, car dimensions and required lead angle.

View tracks & lead fittings

Part 40 · Know your J/105

Companionway & sliding hatch

The hatch and drop boards close the cabin entrance. Match the opening, runners, seals and boat version.

View catalog example

Part 41 · Know your J/105

Mast partners & deck fittings

The mast passes through the deck partners. Identify the mast section, boot, collar and nearby attachments before selecting parts.

Explore Mast partners & deck fittings

Part 42 · Know your J/105

Foredeck hatch

The larger forward hatch provides access and ventilation. Measure the frame, cutout and mounting before ordering a hatch or seals.

View catalog example

Part 43 · Know your J/105

Small cabin-top hatch

The smaller hatch sits ahead of the mast area. Compare the frame, opening, hinges and seals on your boat.

View catalog example

Part 44 · Know your J/105

Furler & headstay attachment

The furling system meets the headstay fitting at the bow. The example is a drum package only, box 1 of 2; confirm the other required components.

View furling systems & components

Part 45 · Know your J/105

Bowsprit & deployment fittings

The retractable bowsprit extends ahead of the bow for the asymmetric spinnaker. Check the tube, bearings, seal and deployment arrangement.

View catalog example

Part 46 · Know your J/105

Bow & stern pulpits

The pulpit rails support the ends of the lifelines. Match the rail shape, height, bases and attachment positions.

Explore Bow & stern pulpits

Part 47 · Know your J/105

Stanchions & lifelines

The side stanchions carry the double lifelines. Match tube diameter, height, base geometry and terminals.

View stanchions & bases

Part 48 · Know your J/105

Mooring cleats

The deck cleats secure dock lines. Check mounting centers, backing, load requirements and clearance before replacement.

View mooring cleats

Part 49 · Know your J/105

Cabin-top handrails

The rails provide handholds alongside the cabin top. Match length, height, fastener spacing and backing to the boat.

Browse J/105 cabin-top handrails parts

J/105 diagram

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J/105 Accessories

(16 products)
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