Anatomy of a Simple Sailboat

Basic Descriptions of Boat Components for Sailors

Parts of the Sail - Alan Sorum
Parts of the Sail - Alan Sorum
A basic anatomy lesson describing the parts of a simple sailboat. A good starting point for learning more about the vessels.

The anatomy of a sailboat can be broken into three broad areas. These sections can be used help describe the parts of the sail, rigging, and hull. These are for a basic sailboat and you'll see more complex examples of yachts in the marina. Parts are labeled in the accompanying illustrations.

Parts of a Sail - A sail is a large piece of strong fabric that catches the wind and provides propulsion for a sailboat. Many sailboats use more than one sail.

  • Head - Topmost corner of a triangular shaped sail
  • Mainsail - Normally the largest sail providing driving force for the sailboat
  • Headsail - A sail set forward of a mast
  • Jib - A triangular shaped headsail
  • Leech - The aft or trailing edge of a sail
  • Luff - The forward edge of a sail
  • Tack - The lower corner of the forward edge of a sail
  • Clew - The lower corner of the aft edge of a sail
  • Foot - The lowest edge of a sail

Parts of the Rigging - A sailboat's rigging takes in all the components that support the mast and sails. Rigging varies greatly between different styles of boats.

  • Mast - The main upright structural member of the sailboat that supports the sails
  • Boom - The horizontal structural member attached to the foot of the mainsail
  • Spreader - A bar that holds the shroud out away from the mast
  • Standing Rigging - Wire ropes that support the mast. They include:
    • Stay - A wire rope that runs from the top of the mast to locations fore and aft on the hull
    • Shroud - A wire rope that adds additional lateral support to the mast
  • Running Rigging - Generically all the lines used to raise, lower or control the sails
    • Halyard - A line that raises or lowers the sail
    • Sheet - A line that controls a sail

Parts of the Hull - The body or fuselage of a sailboat is the hull. Hulls provide buoyancy required to carry cargo and a platform for mounting the sails.

  • Bow - The forward part of the sailboat
  • Centerboard or Keel - A structure that extends down into the water that improves stability, maneuverability and limits lateral movement in the water. Smaller vessels use a dagger or centerboard that is removable. Larger boats have a fixed keel that is often filled with ballast
  • Stern - The back or aft part of the sailboat
  • Rudder - A movable vertical plane at the stern of the sailboat that is used to steer a sailboat
  • Tiller - On smaller sailboats, the rudder is controlled manually with a lever at the stern of the boat. Larger vessels depend on mechanical steering systems
  • Transom - A flat surface at the aft end of a sailboat
Alan Sorum, Alan Sorum

Alan Sorum - Alan Sorum is the Maritime Operations Project Manager for the Prince William Sound Regional Citizens' Advisory Council (PWSRCAC). Alan is ...

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