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Aloft: Above or on top of the deck

Buoy: An anchored float used for used for marking a position on the water or a hazard or a shoal and for mooring

Bearing: The direction of an object expressed either as a true bearing as shown on the chart, or as a bearing relative to the heading of the boat

Capsize: To turn over

Chart: A map for use by navigators

Cleat: A fitting usually with two horned shaped ends, to which lines are made fast. The classic cleat is almost anvil shaped

Compass: Navigation instrument either magnetic or gyro

Current: The horizontal movement of water

Dock: A protected water area in which vessels are moored. The term is often used to denote a pier or wharf.

Fender: A cushion placed between boats, or between a boat and a pier, to prevent damage.

Fouled: Any piece of equipment that is jammed or entangled, or dirtied

Gear: A general term for ropes, blocks, tackle and other equipment

Helm: The wheel or tiller controlling the rudder

Hold: A compartment below deck in a large vessel, used solely for carrying cargo

Jettison: To cast overboard or off. Informal. To discard (something) as unwanted or burdensome

Leeward: The direction away from the wind; opposite of windward

Mooring: An arrangement for securing a boat to a mooring buoy or a pier

Overboard: Over the side or out of the boat

Pennant: Any nautical flags that taper to a point and are used for identification

Stow: To pack or store away; especially, to pack in an orderly, compact manner

Underway: Vessel in motion, i.e., when not moored, at anchor, or aground