Question 221Navigation General

70% to pass

What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is 37 feet (11.6 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS".

A 24.8 nm
B 17.8 nm
C 15.9 nm
D 10.3 nm
AI Explanation

The correct answer is B) 17.8 nm. The geographic range of a light depends on the height of the light above the water and the observer's height of eye. Using the formula provided in the "Reprints from the LIGHT LISTS AND COAST PILOTS," the geographic range for a height of eye of 37 feet (11.6 meters) and a lighthouse height of 37 feet (11.6 meters) is approximately 17.8 nautical miles. The other options are incorrect because they do not accurately reflect the formula and calculation for determining the geographic range of a light given the provided heights.

Related Questions
Q517:A major advantage of the NAVTEX system when compared to other systems is that __... Q1608:The Sun's center may be coincident with both the celestial equator and the obser... Q1423:The owner or Master of a towing vessel shall ensure that all tests and inspectio... Q1415:Generally speaking, a ship steaming across the North Pacific from Japan to Seatt... Q1341:As the temperature for a given mass of air increases, the _______________.

Ready to test your knowledge?

Take a Navigation General Practice Exam
Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

App Store