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.

151: What is the distance from the Memphis Gage to the Redneb Services Dock in New Orleans, LA.
185: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
223: At 1920, Cape Henry Light bears 225°pgc, and Chesapeake Channel Tunnel North Light bears 288°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light?
400: Your vessel receives a distress call from a vessel reporting her position at LAT 5°24'N, LONG 31°16'W. Your position is LAT 2°39'S, LONG 39°24'W. Determine the distance from your vessel to the vessel in distress by Mercator sailing. 

    N a. 669.3 miles
    Y b. 688.7 miles
    N c. 699.2 miles
    N d. 712.9 miles
432: Which chart would you use for more detailed information on New Haven Harbor? 

    Y a. 12371
    N b. 12370
    N c. 12372
    N d. 12373
497: At 0845, Montauk Pt. Light is bearing 205°T at a radar distance of 6.6 miles. What is your speed made good from your 0815 position? 

    N a. 10.5 knots
    N b. 10.0 knots
    N c. 9.2 knots
    Y d. 8.4 knots
527: You depart LAT 25°54'N, LONG 9°38'E and steam 592 miles on course 270°. What is the longitude of arrival? 

    N a. 1°20'E
    N b. 0°40'E
    N c. 0°40'W
    Y d. 1°20'W
553: At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix? 

    N a. LAT 41°04.6'N, LONG 73°04.7'W
    N b. LAT 41°04.8'N, LONG 73°04.8'W
    N c. LAT 41°04.8'N, LONG 73°04.9'W
    Y d. LAT 41°05.1'N, LONG 73°05.1'W
613: On 21 November, at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival? 

    N a. 1330, 3 December
    N b. 1530, 3 December
    Y c. 1830, 3 December
    N d. 1530, 4 December
613: On 21 November, at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival? 

    N a. 1330, 3 December
    N b. 1530, 3 December
    Y c. 1830, 3 December
    N d. 1530, 4 December
617: Your vessel will sail from a position in LAT 8°51.0'N, LONG 81°31.0'W to a position at LAT 33°51.5'S, LONG 151°13.0'E. The distance by great circle is 7,635 miles, and you estimate an average speed of 15.0 knots. What is your estimated zone time of arrival if you depart at 1510 ZT, on 23 July? 

    Y a. 1110, 14 August
    N b. 0110, 14 August
    N c. 1110, 13 August
    N d. 1510, 13 August
730: On 18 November , your 1750 zone time DR position is LONG 110°16.0'W. At that time you observe Polaris with a sextant altitude (hs) of 21°29.8'. The chronometer time of the sight is 00h 52m 43s, and the chronometer error is 02m 18s fast. The index error is 3.2' on the arc, and the height of eye is 49.5 feet. What is your latitude by Polaris? 

    Y a. 21°03.4'N
    N b. 21°13.4'N
    N c. 21°28.1'N
    N d. 21°35.1'N
756: Anchorage regulations for this area may be obtained from __________. 

    N a. Commanding General, Corps of Engineers, Washington, D.C.
    Y b. Office of the Commander 5th Coast Guard District
    N c. Virginia - Maryland Pilots Association
    N d. Chesapeake Bay Port Authority, Hampton VA
818: On 30 December , in DR position LAT 28°24.0'S, LONG 32°15.0'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 02h 09m 16s, and the chronometer error is 00m 00s. The sextant altitude (hs) is 84°03.3'. The index error is 3.5' off the arc, and your height of eye is 62.0 feet. What is the latitude at meridian transit? 

    N a. LAT 28°50.6'S
    Y b. LAT 28°51.9'S
    N c. LAT 28°54.2'S
    N d. LAT 28°56.6'S
1084: On 4 Dec. , your 1500 ZT DR position is LAT 18°06.0'N, LONG 75°42.0'W. You are on course 020°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1548 running fix. 

    N a. LAT 18°10.3'N, LONG 75°34.5'W
    N b. LAT 18°12.6'N, LONG 75°42.0'W
    N c. LAT 18°14.0'N, LONG 75°40.0'W
    Y d. LAT 18°17.3'N, LONG 75°37.7'W
1110: On 19 November , your 0300 zone time DR position is LAT 19°23'N, LONG 151°37'E. You are on course 293°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0039

    N a. LAT 19°38.5'N, LONG 150°41.6'E
    Y b. LAT 19°34.8'N, LONG 150°48.0'E
    N c. LAT 19°32.9'N, LONG 150°52.3'E
    N d. LAT 19°30.5'N, LONG 150°48.5'E
1205: On 25 April , your 1130 DR position is LAT 24°50.0'N, LONG 61°25.0'W. Your vessel is on a course of 300°T at a speed of 16.0 knots. Determine the zone time of (LAN) for your vessel. 

    N a. 1154
    N b. 1156
    N c. 1202
    Y d. 1204
1474: On 14 January , your 0746 zone time DR position is LAT 26°37.0'N, LONG 153°19.0'W. At that time, you observe the Sun bearing 123°psc. The chronometer reads 05h 49m 16s, and the chronometer error is 02m 29s fast. The variation is 3°W. What is the deviation of the standard magnetic compass? 

    Y a. 1.4°W
    N b. 1.6°E
    N c. 3.4°E
    N d. 4.4°W
1489: On 23 July , your 2100 ZT position is LAT 36°43.0'N, LONG 16°09.8'W, when you observed an azimuth of Polaris to determine the compass error. Polaris bears 359.0° per gyrocompass. At the time of the observation, the helmsman noted that he was heading 319.0° per gyrocompass and 331.0° per standard compass. Variation is 12.0°W. Which of the following statements is TRUE? 

    N a. The gyro error is 0.7°E.
    N b. The gyro error is 1.7°W.
    Y c. The deviation is 1.7°E.
    N d. The compass error is 13.7°W
1548: As you approach Buckridge Light (mile 412.5 AHP),
which type of daymark would you see on the light structure? 

    N a. Red diamond
    N b. Red triangle
    N c. Green diamond
    Y d. Green square
1652: On 16 April , in DR position LAT 28°07.0'N, LONG 81°47.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 073.5°psc. The chronometer reads 10h 53m 41s and is 02m 23s slow. Variation in the area is 11°E. What is the deviation of the magnetic compass? 

    N a. 4.5°E
    N b. 4.9°W
    N c. 6.1°E
    Y d. 6.5°W
1779: At 2237 ZT, on 14 July , in DR position LAT 33°57'N, LONG 150°32'W you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 258.6°psc. The variation is 14°E. What is the deviation? 

    Y a. 2.0°W
    N b. 1.0°W
    N c. 0.0°
    N d. 1.0°E
1833: What are the dimensions of the Port Allen Lock at Baton Rouge, LA? 

    N a. 75 feet x 1188 feet
    N b. 84 feet x 1180feet
    Y c. 84 feet x 1188 feet
    N d. 75 feet x 1180 feet
1958: Which daymark would you see as you approach Red Store Light (mile 269.5 AHP)? 

    Y a. Green square
    N b. Green triangle
    N c. Green diamond
    N d. Red square
2091: At your current speed of 22 knots you only have enough fuel remaining to travel 422 miles. You must travel 844 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination? 

    N a. 19.8
    N b. 18.4
    N c. 17.0
    Y d. 15.6
2158: On 26 May , your vessel's 1906 zone time position is LAT 27°16.0'N, LONG 24°37.0'W. At that time, a sextant observation of the planet Jupiter was made. The sextant altitude is 63°27.6', and the chronometer reads 09h 05m 16s. The index error is 5.2' on the arc, and the chronometer error is 01m 25s slow. Your height of eye is determined to be 52.6 feet. What is the (Zn) of this sight using the assumed position? 

    N a. 011.3°T
    Y b. 168.7°T
    N c. 191.3°T
    N d. 348.7°T
2330: At 0731, what is the approximate depth of water? 

    N a. 31 feet (9.4 meters)
    Y b. 41 feet (12.5 meters)
    N c. 52 feet (15.7 meters)
    N d. 58 feet (17.6 meters)
2340: You have steamed 775 miles at 17 knots, and consumed 145 tons of fuel. If you have to steam 977 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots? 

    Y a. 204 tons
    N b. 181 tons
    N c. 163 tons
    N d. 129 tons
2462: You have steamed 504 miles at 21 knots and burning 633 barrels of fuel per day. You must decrease your consumption to 410 barrels per day with 399 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel? 

    N a. 20.1
    Y b. 19.0
    N c. 16.2
    N d. 15.0
2655: You are steering 078°T, and a light is picked up dead ahead at a distance of 15.6 miles at 2316. You change course to pass the light 4.5 miles off abeam to port. If you are making 17 knots, what is your ETA at the position 4.5 miles off the light? 

    N a. 0006
    Y b. 0009
    N c. 0012
    N d. 0015
2702: You are underway on course 241°T at a speed of 18.2 knots.
You sight a daymark bearing 241°T at a radar range of 3.9 miles at 1006. If you change course at 1009, what is the course to steer to leave the daymark abeam to starboard at 1.0 mile? 

    N a. 218°T
    Y b. 222°T
    N c. 257°T
    N d. 260°T
3053: The propeller on a vessel has a diameter of 19.9 feet and a pitch of 21.6 feet. What would be the apparent slip if the vessel cruised 395 miles in a 23 hour day (observed distance) at an average RPM of 78? 

    Y a. -3.2%
    N b. +3.2%
    N c. -12.0%
    N d. +12.0%
3079: If the speed necessary for reaching port at a designated time is 18.2 knots and the pitch of the propeller is 23.9 feet, how many revolutions per minute will the shaft have to turn, assuming a 2% negative slip? 

    N a. 70
    N b. 73
    Y c. 76
    N d. 79
6446: You continue on course from your 1126 fix. At 1131 Cape Charles Light bears 322°T. At 1135 you change course to 000°T. At 1149 Cape Henry Light bears 247°T. Which statement concerning your 1149 running fix is TRUE? 

    N a. Your fathometer reads 47 feet.
    Y b. You are in a danger area.
    N c. Chesapeake Light is due south of you.
    N d. You are north of Smith Island Shoal.
10102: Your GPS position is LAT 37°07.5'N, LONG 75°39.1'W. What is the course per standard magnetic compass (psc) to a position 0.3 mile due north of North Chesapeake Entrance Buoy NCA (LL #375)? 

    N a. 222°psc
    N b. 228°psc
    N c. 231°psc
    Y d. 234°psc
11301: At 1256 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. At 1331 your position is LAT 37°07.5'N, LONG 75°39.1'W. What was the speed made good between the fixes? 

    N a. 14.6 knots
    N b. 15.2 knots
    N c. 16.6 knots
    Y d. 18.3 knots
11400: At 1035 your GPS position of LAT 41°05.3'N, LONG 72°33.7'W. At 1103 your position is LAT 41°09.0'N, LONG 72°40.0'W. What was your speed made good? 

    N a. 6.1 knots
    N b. 9.5 knots
    Y c. 13.0 knots
    N d. 14.8 knots
13406: You are planning to anchor your vessel at LAT 41°01.1'N, LONG 73°02.8'W. What type of bottom should you expect at this position? 

    N a. Gray sand
    N b. Soft mud
    Y c. Gray mud
    N d. Hard sand
14303: What is the height above the water of light No. 84 on the Columbia River below Bonneville lock & dam? 

    N a. 10 feet
    Y b. 14 feet
    N c. 18 feet
    N d. 24 feet
14503: You have just cleared Bonneville Lock and are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville reservoir stands at 78 feet above MSL. If the highest point on your vessel is 46 feet above the water, what will be the vertical clearance when you pass under the overhead power cables at mile 146.5? 

    N a. 134 feet
    Y b. 138 feet
    N c. 144 feet
    N d. 150 feet
15016: If the visibility is 3 miles, at what range will you lose sight of Chesapeake Light? 

    N a. The light has never been visible.
    N b. 6.4 miles
    Y c. 8.3 miles
    N d. 12.1 miles
15211: You have just passed York River Entrance Channel Lighted Buoys "13" and "14". The chart shows a light approximately 1.0 mile off your port beam with a light characteristic "Fl 6 sec". What is the name of this light? 

    N a. Mobjack Bay Entrance Light
    N b. New Point Comfort Shoal Light
    Y c. York Spit Light
    N d. York River Entrance Channel Light "1"
15817: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________. 

    N a. composed of high rocky bluffs
    N b. a high, flat plateau with sheer cliffs
    Y c. fringed by rocky shoals
    N d. low and marshy with isolated beaches
15825: What is the vertical clearance between the highest point of your towboat, if it is 58 feet above the water, and if the Natchez Gage reads 28.13 feet when passing under the Natchez Upper Highway Bridge? 

    N a. 15.9 feet
    N b. 33.2 feet
    Y c. 39.9 feet
    N d. 45.4 feet
15960: From your 1752 position, you steer 313°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light - 238°pgc.
Chesapeake Bay Tunnel North Light - 136°pgc.
What are the latitude and longitude of your 1805 position? 

    Y a. LAT 37°05.9'N,  LONG 76°08.0'W
    N b. LAT 37°06.0'N,  LONG 76°08.4'W
    N c. LAT 37°05.0'N,  LONG 76°08.7'W
    N d. LAT 37°06.1'N,  LONG 76°08.1'W
15968: What was the speed made good from 1900 to 1925? 

    N a. 8.5 knots
    N b. 8.7 knots
    N c. 8.8 knots
    Y d. 9.1 knots
15970: If you have 16.3 miles to reach your destination from your 2000 position and want to be there at 2230, what speed should you make good? 

    N a. 5.7 knots
    N b. 6.1 knots
    Y c. 6.5 knots
    N d. 6.9 knots
16356: What is the course per standard magnetic compass from the anchorage to point "A" located 0.5 mile east of Cape Charles Lighted Bell Buoy 14? 

    N a. 185°
    N b. 188°
    N c. 191°
    Y d. 194°
16360: What is the course to steer per gyro compass from the anchorage to point "A" if westerly winds are causing 3° of leeway? 

    N a. 178°pgc
    N b. 182°pgc
    N c. 184°pgc
    Y d. 187°pgc
16420: If you want to put into Point Judith Harbor of Refuge, what chart should you use? 

    N a. 13205
    N b. 13209
    N c. 13217
    Y d. 13219
16606: Your position is LAT 40°59.0'N, LONG 73°06.2'W. What is the course per standard magnetic compass to New Haven Harbor Lighted Whistle Buoy "NH"? 

    N a. 035°
    N b. 046°
    N c. 049°
    Y d. 052°
16707: Point Judith Harbor of Refuge __________. 

    N a. is used mostly by towing vessels
    N b. has a maximum depth of 14 feet at MHW
    N c. is easily accessible in heavy southerly seas
    Y d. is entered through the East Gap or the West Gap
16739: What is the earliest time you should sight Montauk Point Light (nominal range - 24 miles) if you are turning for 9.2 knots? Visibility is 5 nautical miles. 

    Y a. The light is visible at 2212
    N b. 2221
    N c. 2243
    N d. You will not sight the light on this course.