Which unit equals 60 nautical miles?

• A. Degree
• B. Minute
• C. Second
• D. Range

Answer: (A)

Think about how latitude is measured. A nautical mile is defined as one minute of arc along a meridian, and there are 60 minutes in a degree. So one degree of latitude spans 60 nautical miles. That makes a degree the unit that equals 60 nautical miles. A minute would be 1 nautical mile, a second would be 1/60 of a nautical mile, and “range” isn’t a standard distance unit in this context.