Chart Navigation & Plotting · Speed-Time-Distance — Distance Run
Steaming at 18 knots, how far do you travel in 40 minutes?
- A12.0 nautical miles✓ Correct
- B7.2 nautical miles
- C10.8 nautical miles
- D15.0 nautical miles
Explanation
Distance = speed × time = 18 kn × (40 ÷ 60) h = 18 × 0.667 = 12.0 nm.
Authority: Bowditch (Pub. No. 9), speed-time-distance
Practice the full Chart Navigation & Plotting bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Chart Navigation & Plotting questions
- Speed-Time-Distance — Distance Run
At 21 knots, how far does a vessel travel in 40 minutes?
- Chart Basics
On a Mercator chart, one nautical mile is measured using the:
- Chart Basics
The principal advantage of the Mercator projection for navigation is that:
- Chart Basics
Charted depths (soundings) on a U.S. chart are referenced to which tidal datum?
- Chart Basics
Vertical clearances of bridges and overhead cables on a U.S. chart are normally referenced to:
- Distance, Speed & Time
A vessel makes good 12 knots. How far does it travel in 20 minutes?