Nautical Chart Terms Quiz

What does chart datum refer to on a nautical chart?

• The water level used to measure depths

• The distance between objects on the chart

• The direction of true north

• The latitude scale on the chart

What are dividers used for on a nautical chart?

• Measuring distances

• Determining true north

• Plotting courses

• Identifying land features

What is the purpose of a compass rose on a nautical chart?

• To show the direction of true north and magnetic north

• To measure distances between longitude lines

• To identify notable land features

• To represent a steady course or bearing

Why are there two norths on a compass rose?

• True north and magnetic north are not always the same

• True north and magnetic north are fixed points on a map

• True north and magnetic north are interchangeable

• True north and magnetic north have different scales

What do longitude scales on a nautical chart represent?

• Horizontal lines on the map

• Distances between latitude lines

• Notable land features

• The direction of true north

What do latitude scales on a Mercator chart measure?

• Distance

• Direction

• Depth

• Time

What are land features on a nautical chart?

• Notable and relevant features of the land

• Distances between longitude lines

• Horizontal lines on the map

• Distances between objects on the chart

What is a Mercator projection used for?

• Putting a chart on a cylinder

• Measuring distances and shapes

• Showing smaller waterways and harbors

• Representing a steady course or bearing

What is C Map Genesis?

• A popular marine mapping program

• A specific kind of nautical chart

• A handheld compass

• A measurement tool for distances

What is a harbor chart used for?

• Showing smaller waterways and harbors

• Measuring distances on a chart

• Determining true north

• Identifying notable land features