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General Navigation - USCG Exam Questions

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The Light List shows that a navigational light has a nominal range of 12 miles and a height above water of 25 feet (7.6 meters). Your height of eye is 38 feet (11.6 meters) and the visibility is 5.5 miles. At what approximate range will you FIRST sight the light?

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Mariner discussion

Comments from mariners who studied this question.

Al Alden Ward · Sep 29, 2019
If my visibility is only 5.5 miles than how can I see anything over 5.5 miles including the light that's at 12 miles away or more without the light having a Radar beacon on it called racons

About this module

Practice 2,138 real U.S. Coast Guard Deck exam questions from General Navigation. Here's a random one. Answer it, then keep going with Next.

Chart reading, the U.S. Aids to Navigation System, compass error, tides and currents, and the standard navigation publications.

The Deck pool holds the current U.S. Coast Guard questions for every deck credential, from Able Seaman and the OUPV six-pack up to unlimited Master. Each question is multiple choice with four options, graded instantly, with the USCG reference shown where one exists.