Broadcast warning of navigation or weather hazards.

Instrument used to measure angles between celestial bodies for navigation.

Rope or line used to control the angle of a sail.

A large, colorful sail used for downwind sailing.

The right side of a vessel when facing forward.

The very back end of a vessel.

Changing direction by turning the bow through the wind.

Map showing predicted tide heights and currents.

The periodic rise and fall of sea level caused by gravitational forces.

Geographic north pole used in map-based navigation.

A vessel in motion, not anchored or moored.

Short-range radio system for marine communication.

Schedule assigning crew to shifts for navigation and safety.

Crew member responsible for monitoring navigation and safety.

The level at which a vessel sits in the water.

A marked coordinate used in navigation routes.

Mechanism used to raise or lower the anchor.

Difference between true north and magnetic north.

The primary and largest sail attached to the main mast.

Emergency procedure for rescuing a person who has fallen into the water.

Communication system used for distress and coordination.

The vertical pole that supports sails and rigging.

International distress signal for life-threatening emergencies.

Securing a vessel to a fixed buoy or dock.

Detailed map depicting marine features and navigation aids.

Unit of distance used in navigation, equal to 1.852 kilometers.

Required lighting identifying vessel type and movement at night.

Continuous monitoring of vessel position, traffic, and hazards.

Urgency signal for non-life-threatening emergencies.

Preparation of a route including waypoints, weather, and hazards.