In sailing, gear is a general term referring to the equipment, apparatus, and accessories used to operate a vessel. It encompasses a wide variety of items essential for sailing, ranging from rigging and ropes to safety equipment.

Here is a breakdown of what "gear" typically refers to:
General Equipment: Ropes ("lines"), blocks, tackle, and various accessories on board.

Rigging: The wires, lines, and halyards used to support the mast and control the sails.

Ground Tackle: Specific gear used for anchoring or mooring, such as the anchor, chain, and rode.

Chafing Gear: Material (cloth or tubing) wrapped around lines or spars to protect them from wearing against rough surfaces.

Sailing Wear/Foul-Weather Gear: Protective clothing, often called "oilskins" or "foulies," designed to keep sailors dry and warm.

Self-Steering Gear: A mechanical, electrical, or hydraulic device used to steer the boat automatically.

The term is often used in the context of getting the boat ready ("stow your gear") or referring to specific functional equipment, such as safety gear.