Definition

Noun: A specialized map designed for use in marine or aerial navigation. It graphically represents the prevailing meteorological, hydrographic, and navigational conditions of a specific area, including information such as water depths, coastline features, hazards, aids to navigation (like buoys and lighthouses), and sometimes tidal or current data.

Usage

A navigational chart is an essential tool for safely planning and conducting a voyage. It is used by mariners and pilots to determine position, plot courses, and avoid dangers.

Examples

• Noun:
  • The captain consulted the navigational chart to plot a safe course through the reef.
  • Modern electronic navigational charts are integrated into the ship's GPS system.
  • Before the flight, the pilot reviewed the aeronautical navigational chart for the route.

Advanced Usage

• "to plot on a navigational chart": To mark a position or draw a course line on the chart.
  • The officer of the watch plotted the ship's noon position on the navigational chart.

Variants and Related Words

• Nautical chart: A more specific term for a navigational chart used for marine navigation.
• Aeronautical chart: A specific type of navigational chart designed for aviation, showing airspace, routes, and ground features.
• Chartplotter (n): An electronic device that displays a navigational chart and allows for real-time position plotting.

Synonyms

• Marine map: A general term for a map of sea areas.
• Sailing chart: Often used for charts covering open ocean areas.

Related Phrases

• Chart datum: The reference level (e.g., for tides) used on a navigational chart.
• Chart correction: The process of updating a paper navigational chart with the latest notices to mariners.

Noun

1. a chart for a navigator showing the prevailing meteorological and hydrographic and navigational conditions