What is the difference between a map and a chart?

• A. A map shows depths and hazards; a chart shows land features and other information.
• B. A chart is for navigation with depths and hazards; a map shows land features and other information.
• C. There is no difference.
• D. Charts are inland; maps are used at sea.

Answer: (B)

The key idea is the purpose of each tool. Nautical charts are built specifically for marine navigation; they plot safe passage and include essential water information such as depths (soundings), hazards (rocks, wrecks, shoals), navigation aids (buoys, lighthouses), channels, and precise coastal outlines. This data lets a navigator plan a route and avoid dangers at sea.

Maps, on the other hand, are general representations of land features and other information like terrain, roads, cities, and political boundaries. They’re not focused on water depths or underwater hazards and aren’t used as the primary tool for plotting safe sea navigation.

So the statement that charts are for navigation with depths and hazards, while maps show land features and other information, correctly captures the difference. The other options mix up what each tool emphasizes or claim there’s no difference, which isn’t accurate.