Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 14)
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Question 1 of 30
The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.
Browse Questions in Set 14
30 MCQs #1 The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________. #2 What is the approximate geographic visibility of an object with a height above the water of 70 feet, for an observer with a height of eye of 65 feet? #3 The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high (11.0 meters). If the visibility is 7.0 miles and your height of eye is 25 feet (7.6 meters), at what approximate distance will you sight the light? #4 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 30 feet (9.1 meters) and the visibility is 0.5 mile. At what approximate range will you first sight the light? #5 The Light List shows that a navigational light has a nominal range of 17 miles and a height above water of 28 feet (8.5 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 11.0 miles. At what approximate range will you first sight the light? #6 The Light List indicates that a light has a nominal range of 20 miles and is 52 feet (16 meters) high. If the visibility is 20 miles and your height of eye is 20 feet (6 meters), at what approximate distance will you sight the light? #7 The Light List shows that a navigational light has a nominal range of 10 miles and a height above water of 38 feet (11.6 meters). Your height of eye is 52 feet (15.8 meters) and the visibility is 11.0 miles. At which approximate range will you first sight the light? #8 The Light List shows that a navigational light has a nominal range of 6 miles and a height above water of 18 feet (5.5 meters). Your height of eye is 47 feet (14.3 meters) and the visibility is 1.5 miles. At what approximate range will you first sight the light? #9 The Light List indicates that a light has a nominal range of 18 miles and is 38 feet high. If the visibility is 6 miles and your height of eye is 15 feet, at which distance will you sight the light? #10 The Light List shows that a navigational light has a nominal range of 6 miles and a height above water of 18 feet (5.5 meters). Your height of eye is 40 feet (12.2 meters) and the visibility is 27.0 miles. At which approximate range will you first sight the light? #11 Your height of eye is 40 feet (12.2 meters). What is the approximate geographical distance at which Ambrose Light, NY, could be visible? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #12 A mountain peak charted at 700 feet breaks the horizon, and your height of eye is 12 feet. What is your approximate distance off (choose closest answer)? #13 What is the approximate geographic range of Point Judith Light, Rhode Island, if your height of eye is 62 feet (18.9 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". (use charted range of 20 miles as nominal range) #14 What is the approximate geographic range of Shinnecock Light, NY, if your height of eye is 24 feet (7.3 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #15 What is the approximate geographic range of Southwest Ledge Light, Connecticut, if your height of eye is 32 feet (9.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #16 What is the approximate geographic range of Assateague Light, VA, if your height of eye is 52 feet (15.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #17 When navigating in high latitudes and using a chart based on a Lambert conformal projection, __________. #18 On a gnomonic chart, a great circle track between Los Angeles and Brisbane will appear as a __________. #19 All straight lines represent great circle tracks on a chart based on a(n) __________. #20 The only cylindrical chart projection widely used for navigation is the __________. #21 A Mercator chart is a __________. #22 You wish to measure the distance on a Mercator chart between a point in latitude 42°30'N and a point in latitude 40°30'N. To measure 30 miles at a time you should set the points of the dividers at __________. #23 Which statement is TRUE concerning a Mercator projection? #24 Distance along a track line is measured on a Mercator chart by using the __________. #25 On a Mercator chart, 1 nautical mile is equal to __________. #26 What area of the earth cannot be shown on a standard Mercator chart? #27 A coastal chart could have a scale of __________. #28 A harbor chart could have a scale of __________. #29 Charts showing the coast of Mexico are produced by the United States __________. #30 The agonic line on an isomagnetic chart indicates the __________.
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