Truck (rigging)

For other uses, see Truck (disambiguation).

A truck is a nautical term for a wooden ball, disk, or bun-shaped cap at the top of a mast, with holes in it through which flag halyards are passed.^[1] Trucks are also used on wooden flagpoles, to prevent them from splitting.

Without a masthead truck, water could easily seep into the circular growth rings of a wooden mast. However, the grain in the truck is perpendicular to that of the mast, allowing the water to run off it.

References

↑ Masting and Rigging the Clipper Ship and Ocean Carrier" by Harold A. Underhill ISBN 0-85174-173-8

Sails, spars and rigging

Rigs	Bermuda rig Cat rig Full rig Gaff rig Junk rig Ljungstrom rig Mast aft rig

Sail types	Asymmetrical spinnaker Junk sail Lugsail Parafoil Ringtail Spinnaker Turbosail Rotorsail Wingsail

Sails (sail plan)	Blooper Course Crab claw Driver Extra Fisherman Genoa Gennaker Jib Lateen Mainsail Moonraker Royal Skysail Screecher Spanker Spinnaker Spritsail Staysail Studding Topgallant Topsail Trysail Watersail

Sail anatomy and materials	Clew Foot Head Leech Luff Roach Tack Throat Peak Dacron Technora Kevlar Twaron

Spars	Boom Bowsprit Boomkin Dolphin striker a/k/a Martingale Pelican striker Fore-mast Gaff Jackstaff Jibboom Jigger-mast Jury rigging Main-mast Mast Mizzen-mast Truck Spinnaker pole Spreader Sprit Topmast Yard

Rigging components	Backstay Block Bobstay Boomkicker Braces Buntlines Chainplates Cleat Clevis pin Clewlines Cunningham Deadeye Downhaul Earing Fairlead Forestay Gasket Gooseneck Gunter Guy Halyard Kicker Lazy jack Outhaul Parrel beads Peak Preventer Ratlines Running rigging Shackle Spinnaker chute Standing rigging Sheet Shroud Stay mouse Stays Throat Topping lift Trapeze Traveller Turnbuckle Vang Windex

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