USCG Navigation Problems: Master's License

This is an interactive test. Read each question and select the proper answer by clicking on the appropriate answer. If a "Y" appears, your choice is correct. If a "N" appears, more study may be in order.

92: A stretch where the channel changes from one side of the river to the other is called a __________.
113: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
226: At 2000, your position is LAT 37°04.1'N, LONG 76°05.6'W. You change course for the Eastern Shore. At 2037, Old Plantation Flats Light bears 033°pgc, and York Spit Light bears 282°pgc. The course made good from your 2000 position is __________.
231: From your 2123 position, you are approximately 42 miles from Crisfield, MD. If you are making good a speed of 13 knots, at what time should you arrive at Crisfield, MD? 

    N a. 0148
    N b. 0112
    Y c. 0037
    N d. 2359
319: At 2100, you have passed through the Chesapeake Bay Bridge and Tunnel and determine your position to be LAT 37°01.3'N, LONG 76°03.0'W. The current is flooding in a direction of 303°T at 2.5 knots. Adjusting your course for set and drift, which course would you steer while turning RPMs for 6 knots to make good a course of 175°T? 

    N a. 190°T
    N b. 183°T
    N c. 164°T
    Y d. 156°T
360: If you are making 8.3 knots over the ground, what is your ETA at the first turning point in York Spit Channel between buoys "29" and "30"? 

    Y a. 0522
    N b. 0508
    N c. 0456
    N d. 0448
440: By 1015, visibility has increased to 5.0 miles and you can see Fishers Island. Fishers Island has __________. 

    Y a. sparsely wooded hills and is fringed with shoals to the south
    N b. sheer cliffs rising from the sea to a high, flat plateau
    N c. barren, rocky hills with prominent sandy beaches
    N d. low and sandy beaches with salt ponds and marsh grass
485: Determine the great circle distance and initial course from LAT 08°53.0'N, LONG 79°31.0'W to LAT 33°51.5'S, LONG 151°13.0'E. 

    N a. 7809 miles, 247.0°T
    N b. 7763 miles, 247.0°T
    Y c. 7635 miles, 233.9°T
    N d. 7618 miles, 230.3°T
596: At 0921, on 24 July, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 10.0 mph, what was the current since departure? 

    N a. 1.4 mph
    Y b. 1.7 mph
    N c. 2.0 mph
    N d. 7.0 mph
619: Your vessel departs Montevideo, Uruguay, LAT 34°40.3'S, LONG 54°09.1'W (ZD +4), at 1800 zone time, on 15 October . It is bound for New York, LAT 40°27.5'N, LONG 73°49.9'W (ZD +5). The distance is 5,749 miles, and you expect to average 20 knots. What is your estimated zone time of arrival? 

    N a. 0427, 26 October
    N b. 1627, 26 October
    Y c. 1627, 27 October
    N d. 0427, 27 October
632: The Memphis Gage reads 18.4 feet. The high point of your towboat is 48 feet above water. What is the vertical clearance as you pass under the Memphis Highway Bridge? 

    Y a. 46.4 feet
    N b. 53.8 feet
    N c. 66.4 feet
    N d. 75.4 feet
976: On 7 November , your 0830 zone time position was LAT 27°36.0'N, LONG 162°19.0'W. Your vessel was steaming on course 289°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow 01m 51s. The observed altitude (Ho) was 38°21.1'. Local Apparent Noon (LAN) occurred at 1138 zone time. The observed altitude (Ho) was 45°35.0'. What was the longitude of your 1200 zone time running fix? 

    Y a. 163°38.8'W
    N b. 163°34.0'W
    N c. 163°30.2'W
    N d. 163°26.0'W
1189: On 7 February , your 0800 zone time DR position is LAT 22°16.0'N, LONG 92°26.0'W. Your vessel is on course 270°
T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)? 

    N a. 1218
    N b. 1222
    N c. 1226
    Y d. 1230
1283: On 5 May , your 1800 ZT DR position is LAT 26°11.5'N, LONG 65°35.0'W. You are on course 270°T at a speed of 12 knots. What will be the ZT of sunset at your vessel? 

    N a. 1825
    N b. 1840
    Y c. 1857
    N d. 1901
1426: What is the total length of the trip? 

    N a. 910.6 miles
    N b. 901.4 miles
    N c. 900.7 miles
    Y d. 873.7 miles
1484: On 7 December , your vessel's 0835 zone time DR position is LAT 28°30.0'N, LONG 125°39.3'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 04h 34m 48s, and the Sun is bearing 113° per standard magnetic compass. The chronometer error is 01m 24s slow, and the variation in the area is 13.0°E. What is the deviation of the standard magnetic compass? 

    N a. 0.7°E
    N b. 1.0°W
    Y c. 2.3°E
    N d. 3.0°W
1675: On 28 November , your vessel's 0652 DR position is LAT 37°30'N, LONG 124°12'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 103° per standard magnetic compass. Variation in the area is 16.3°E. The chronometer reads 02h 54m 18s and is 02m 06s fast. What is the deviation of the compass? 

    Y a. 2.5°W
    N b. 3.0°W
    N c. 2.0°E
    N d. 3.0°E
1862: On 14 January , your 0550 ZT DR position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star bearing 004.5°T, at an observed altitude (Ho) of 40°10.0'. The chronometer reads 08h 48m 51s and is 01m 22s slow. What star did you observe? 

    N a. Gienah
    Y b. Kochab
    N c. Gacrux
    N d. Eltanin
1902: On 22 April , your 1852 DR position is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing 077°T at an observed altitude (Ho) of 18°58.7'. The chronometer reads 02h 54m 53s, and is 02m 51s fast. What star did you observe? 

    N a. Diphda
    N b. Betelgeuse
    N c. Gienah
    Y d. Arcturus
1906: On 22 March , your 0519 DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 051°T at an observed altitude (Ho) of 50°03.7'. The chronometer reads 10h 16m 47s, and is 02m 15s slow. What star did you observe? 

    N a. Acamar
    N b. Enif
    N c. Menkar
    Y d. Deneb
1986: You are in charge of a vessel that damages an aid to navigation established and maintained by the United States. Which statement is TRUE? 

    N a. You must take the aid in tow and deliver it to the nearest Coast Guard, Marine Safety Office.
    N b. You must report the allision to the nearest Army Corps.. of
    
Engineers Office.
    N c. You may wait until you reach your destination before reporting the allision to the U.S. Coast Guard.
    Y d. You must report the accident to the nearest Officer in Charge, Marine Inspection.
2100: From your 2118 position, you are steering 288°T at an engine speed of 7.0 knots. If visibility is suddenly reduced to 2 miles, at what time can you expect Old Point Comfort Light to become visible again? 

    N a. The light is visible at 2118.
    N b. 2155
    N c. 2220
    Y d. 2232
2205: What are the dimensions of Old River Lock, on the Lower Mississippi River? 

    N a. 1202 feet x 84 feet
    Y b. 1190 feet x 75 feet
    N c. 760 feet x 75 feet
    N d. 425 feet x 75 feet
2242: At 1620 ZT, on 10 September , in DR position LAT 34° 03.8' N, LONG 050° 28.4' W, you observe an amplitude of the Moon. The Moon’s upper limb is observed on the visible horizon and bears 110.2° psc. The variation is 2° E. What is the deviation? 

    N a. 2.0°E
    N b. 2.0°W
    Y c. 1.2°E
    N d. 1.2°W
2460: You have steamed 499 miles at 21 knots and burning 462 barrels of fuel per day. You must decrease your consumption to 221 barrels per day with 311 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel? 

    N a. 17.3
    Y b. 18.4
    N c. 19.1
    N d. 20.0
2500: You are underway and intend to make good a course of 227°T. You experience a current with a set and drift of 350°T at 2.1 knots, and a northwest wind produces a leeway of 5°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 11 knots. What will be your speed made good over your intended course of 227°T? 

    N a. 18.5 knots
    N b. 18.1 knots
    N c. 17.6  knots
    Y d. 17.2 knots
2585: At 2000 you plot your position as: LAT 41°11'N, LONG 072°35'W. The set and drift is 095°T at 0.8 knot. What course must you steer, and what engine speed must you turn, in order to make good 255°T at 8.5 knots? 

    Y a. 257°T,  9.3 knots
    N b. 253°T,  9.3 knots
    N c. 257°T,  7.7 knots
    N d. 253°T,  7.7 knots
3065: The propeller on your vessel has a pitch of 18'09". If the observed distance for a day's run was 399.4 miles and the average RPM was 86, which statement is TRUE? 

    N a. The slip is a positive 5%.
    N b. The day's run by engine RPM was 404.5 miles.
    Y c. The slip is a negative 5%.
    N d. The day's run by engine RPM was 390.6 miles.
3094: If the pitch of the propeller is 26.7 feet, and the revolutions per day are 131,717, calculate the day's run allowing 4% negative slip. 

    N a. 555.2 miles
    N b. 578.4 miles
    Y c. 601.6 miles
    N d. 649.4 miles
3102: You are turning 88 RPM, with a propeller pitch of 19 feet, and an estimated slip of 0%. What is the speed of advance? 

    Y a. 16.5 knots
    N b. 16.9 knots
    N c. 17.3 knots
    N d. 18.1 knots
3306: You have steamed 264 miles and consumed 22.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 521 miles? 

    N a. 31.7 tons
    N b. 38.6 tons
    Y c. 43.4 tons
    N d. 85.7 tons
3307: You have steamed 182 miles and consumed 16.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 392 miles? 

    N a. 28.3 tons
    Y b. 34.5 tons
    N c. 49.6 tons
    N d. 74.2 tons
10209: Your GPS position is LAT 41°08.5'N, LONG 72°28.8'W. What course must you steer per standard magnetic compass (psc) to leave Cornfield Lighted Whistle Buoy "CF" 0.5 mile abeam to port? 

    N a. 064°psc
    Y b. 077°psc
    N c. 088°psc
    N d. 092°psc
11504: At 1016 your position is LAT 41°07.6'N, LONG 71°38.5'W. At 1116 your position is LAT 41°01.4'N, LONG 71°29.4'W. What was the course made good between the two positions? 

    Y a. 132°T
    N b. 135°T
    N c. 140°T
    N d. 143°T
12501: You are on course 056° per standard magnetic compass when you take the following bearings: Cape Henry Light 262°psc Cape Charles Light 344°psc Chesapeake Light 125°psc What is your position? 

    N a. LAT 36°58.4'N, LONG 75°49.1'W
    N b. LAT 36°58.1'N, LONG 75°50.0'W
    N c. LAT 36°57.8'N, LONG 75°49.2'W
    Y d. LAT 36°57.6'N, LONG 75°49.8'W
12607: You are on course 240° per standard magnetic compass when you take the following bearings: Old Field Point Light 253°psc New Haven Light 357°psc Mattituck Inlet Light 126°psc What is your position? 

    N a. LAT 41°04.5'N, LONG 72°49.2'W
    N b. LAT 41°05.7'N, LONG 72°50.2'W
    Y c. LAT 41°05.9'N, LONG 72°53.1'W
    N d. LAT 41°08.6'N, LONG 72°53.5'W
13004: At 1815 your position is LAT 41°05.5'N, LONG 72°47.3'W. You are making turns for 12.6 knots. What is your ETA at Plum Island Mid Channel Buoy PI (LAT 41°13.3'N, LONG 72°10.8'W)? 

    N a. 2019
    N b. 2028
    Y c. 2032
    N d. 2038
14701: How many nautical miles are between mile 44 and mile 163 on the Columbia River? 

    N a. 98.6
    Y b. 103.4
    N c. 119.5
    N d. 136.9
15138: At 2045 you obtained the following Loran readings:
9960-W-14844.0
9960-X-26128.0
9960-Y-43712.5
What is your vessel's position? 

    N a. 40°41.1'N, 72°10.5'W
    N b. 40°41.4'N, 72°10.7'W
    Y c. 40°41.8'N, 72°10.8'W
    N d. 40°42.3'N, 72°11.3'W
15170: From your 2123 position, you are approximately 42 miles from Crisfield, MD. If you are making good a speed of 11 knots, at what time should you arrive at Crisfield, MD? 

    N a. 2359
    N b. 0037
    Y c. 0112
    N d. 0149
15367: At 0700, Falkner Island Light bears 023°pgc, and the range to the south tip of Falkner Island is 7.1 miles. What was the course made good since 0615? 

    N a. 078°T
    Y b. 081°T
    N c. 084°T
    N d. 087°T
15625: The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1300, 5 January, and last for six hours. What minimum speed over the ground must you make from Red River Landing Gage in order not to be delayed? 

    N a. 6.0 mph
    Y b. 6.4 mph
    N c. 6.8 mph
    N d. 7.3 mph
15721: You are turning for 7.8 mph and estimate the current at 1.0 mph. What is your speed over the ground? 

    Y a. 8.8 mph
    N b. 7.9 mph
    N c. 7.8 mph
    N d. 6.8 mph
16113: After you enter Thimble Shoal Channel, you will alter course to pass between Trestle "A" and "B". Which channel should you use? 

    N a. Thimble Shoal Main Channel or the South Auxiliary Channel
    N b. Any of the channels but keep to the right hand side
    Y c. The South Auxiliary Channel
    N d. Thimble Shoal Main Channel
16520: Which chart should you use to enter Great Salt Pond? 

    N a. 13214
    N b. 13205
    Y c. 13217
    N d. 13207
16557: Which course would you steer by your standard magnetic compass to make good a course of 275°T? 

    N a. 266°psc
    N b. 272°psc
    Y c. 289°psc
    N d. 294°psc