Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Navigation (Set 11)
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Question 1 of 30
In the IALA Buoyage System, what are buoys with alternating red and green horizontal bands used to indicate?
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30 MCQs #1 In the IALA Buoyage System, what are buoys with alternating red and green horizontal bands used to indicate? #2 Under the IALA-B Buoyage System, a buoy displaying a red light will __________. #3 Spoil grounds, anchorage areas, cable areas, and military exercise areas are all marked by yellow buoys. Which special mark on the buoy will indicate the specific area you are in? #4 Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be __________. #5 Lines on a chart which connect points of equal magnetic variation are called __________. #6 Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System? #7 A vertically-striped buoy may be __________. #8 In United States waters, a buoy having red and white vertical stripes has a light characteristic of __________. #9 Which light signal indicates that you may approach the lock? #10 You are outbound in a buoyed channel on course 015°T. You sight a white light #11 On an isomagnetic chart, the line of zero variation is the __________. #12 Under the IALA Buoyage Systems, safe water marks may show a __________. #13 Under the IALA Buoyage Systems, a safe water mark may NOT __________. #14 Permission to enter the riverward chamber of twin locks is given by the lockmaster and consists of which sound signal? #15 You are approaching a drawbridge and have sounded the proper whistle signal requesting it to open. You hear a signal of one prolonged and one short blast from the bridge. Which action should you take? #16 A light having characteristics which include color variations is defined as __________. #17 Under the IALA Buoyage Systems, a spherical buoy will mark the __________. #18 Which light characteristic may be used on a special purpose mark? #19 Which light characteristic may be used on a special purpose mark? #20 Which of the buoys listed below could be used to mark an anchorage? #21 What is the approximate geographic range of Horton Point Light, NY, if your height of eye is 40 feet (12.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". #22 A special purpose buoy shall be __________. #23 Buoys which mark dredging areas are painted __________. #24 Yellow lights may appear on __________. #25 Under the IALA Buoyage Systems, a yellow buoy may mark __________. #26 In the U.S. Aids to Navigation System on the Western Rivers, the light characteristic of group flashing (2) is used for lights on __________. #27 The light characteristic of flashing is used in the Aids to Navigation System on the Western Rivers for lights on __________. #28 The Light List indicates that a light has a nominal range of 14 miles and is 42 feet (12.7 m) high. If the visibility is 16 miles and your height of eye is 20 feet (6.1 m), at which approximate distance will you sight the light? #29 The light characteristic of composite group flashing (2 + 1) is used in the Aids to Navigation System on the Western Rivers for lights on __________. #30 Under the U.S. Aids to Navigation System used on the Western Rivers, aids to navigation lights on the right descending bank show __________.
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