A mainsheet traveller allows the attachment point of the mainsheet system to move across the yacht. Used correctly, it gives another way to control boom position and mainsail shape without relying on mainsheet tension alone.
The traveller is a system made up of track, car, end controls, blocks, attachments and supporting structure. These components should be selected together.
What does the traveller control?
Moving the traveller changes the athwartships position of the mainsheet attachment. This can help manage boom position while allowing the mainsheet itself to control other aspects of sail trim.
The useful range of movement and the loads involved depend on the yacht, mainsheet geometry and where the traveller is positioned.
Choosing the track
Track size and section need to match the intended car and expected load. The track also needs appropriate support along its installed length.
When replacing an existing track, check its section, overall length, fastener spacing and the structure beneath it. Do not assume a visually similar track from another system will accept the existing car.
Traveller cars and bearings
Cars may use different bearing arrangements depending on their design and load range. A traveller that moves easily when unloaded may behave very differently once the mainsheet is carrying significant load.
Manufacturer load data should therefore be used when selecting a car rather than judging suitability from physical size alone.
Traveller control systems
Many travellers use a multi-part control line so the car can be adjusted under sail. Blocks, end fittings and control-line diameter all form part of that system.
The purchase should provide useful control without creating unnecessary rope, friction or complexity. The end fittings must also be rated for the loads transferred through the control system.
Mainsheet geometry and loads
Traveller loads depend strongly on mainsheet geometry. The position of the boom attachment, traveller, mainsheet blocks and number of parts in the purchase all influence the forces carried by individual fittings.
When changing from the original arrangement, it is therefore important to assess the whole system rather than simply replacing the track with a larger one.
Mounting structure
Track fasteners transfer mainsheet load into the deck, cockpit or bridge structure. Check for movement, cracking, corrosion, water ingress and inadequate backing before installing new components.
A stronger traveller system cannot compensate for weak supporting structure.
Maintenance
Keep the track clean and inspect the car, end stops, control blocks and fasteners regularly. If the car becomes difficult to move, investigate the cause rather than using excessive force.
Browse our tracks and traveller systems, or return to the wider Yacht Deck Hardware Guide.