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.

256: At 0209, your position is LAT 41°01.8'N, LONG 72°40.8'W. What course should you steer per standard magnetic compass to make good 278° magnetic? (assume no set and drift)
258: During twilight on 28 December , about 1800 GMT, in DR position LAT 4°00'N, LONG 0°06'W, the sextant altitude (hs) of Venus was 30°46.8'. The height of eye was 36 feet, and the index error was 2.0' on the arc. The temperature was 68°F. The barometer read 1030 mb. Calculate the observed altitude (Ho).
284: Based on a DR, at approximately 1817 you would expect to __________.
289: At 1930, you take a fix using the following radar ranges:
York Spit Light - 3.6 miles;
New Point Comfort Spit Light "2" - 2.0 miles;
York Spit Swash Channel Light "3" - 2.5 miles.

Your longitude is __________. 

    N a. 76°16.2'W
    N b. 76°16.5'W
    Y c. 76°16.8'W
    N d. 76°17.2'W
300: You are bound for New London. Where will you cross the demarcation line and be governed by the Inland Rules of the Road? 

    N a. You are already governed by the Inland Rules.
    N b. Above the Thames River Bridge
    Y c. In the Race
    N d. You will not be governed by the Inland Rules.
311: A vessel at LAT 20°10'N, LONG 122°00'E is to proceed to LAT 26°18'N, LONG 128°20'E. What are the course and distance by mid-latitude sailing? 

    N a. 041.2°T, 501.0 miles
    N b. 041.9°T, 503.6 miles
    Y c. 043.5°T, 507.3 miles
    N d. 044.7°T, 509.7 miles
349: From your 0430 position, what is the course per standard magnetic compass to a position where Twenty-eight foot Shoal lighted buoy "TE" is abeam to port at 1 mile? 

    Y a. 101.5°
    N b. 098.0°
    N c. 086.0°
    N d. 082.5°
433: What true course and speed did you make good between 0730 and 0900? 

    N a. 271°T, 8.9 knots
    N b. 273°T, 8.7 knots
    Y c. 277°T, 8.4 knots
    N d. 284°T, 7.5 knots
437: At 0227, you are on course 087°T at 10 knots. What course per standard magnetic compass should you steer to make good your true course? 

    N a. 109°psc
    Y b. 105°psc
    N c. 102°psc
    N d. 099°psc
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
626: You are on a voyage from St. John, Canada, to Galveston, TX. The distance is 2280 miles, and the speed of advance is 15.0 knots. You estimate 16.5 hours for bunkering enroute at Ft. Lauderdale, FL. If you sailed at 1642 hours (ZD +4), 27 February , what was your ETA (ZD +6) at Galveston? 

    Y a. 1512, 6 March
    N b. 0812, 6 March
    N c. 0712, 6 March
    N d. 2312, 5 March
685: What company does NOT have a marine facility along the river bank in Madison Parish (mile 457.0 AHP)? 

    N a. Complex Chemical Co.
    N b. Delta Southern Railroads
    Y c. Baxter Wilson Steam
    N d. Farm Chemical
1094: On 12 Oct. , your vessel is on course 081°T, speed 20 knots. Your 1800 zone time DR position is LAT 26°11.0'S, LONG 77°18.0'E. You observed 3 celestial bodies. Determine the latitude and longitude of your 1835 running fix. NP-0024

    N a. LAT 26°05.5'S, LONG 77°14.5'E
    N b. LAT 26°07.5'S, LONG 77°34.0'E
    N c. LAT 26°09.0'S, LONG 77°27.5'E
    Y d. LAT 26°12.0'S, LONG 77°31.0'E
1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)? 

    Y a. 1145
    N b. 1148
    N c. 1152
    N d. 1156
1196: On 14 October your 0800 zone time (ZT) dead reckoning position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)? 

    N a. 1148
    N b. 1151
    Y c. 1156
    N d. 1202
1256: On 17 May , your 0300 ZT DR position is LAT 27°21.0'N,
LONG 146°14.0'E. You are on course 107°T at a speed of 18 knots. What will be the zone time of sunrise at your vessel? 

    N a. 0457
    N b. 0511
    N c. 0519
    Y d. 0522
1257: On 5 May , your 1300 ZT DR position is LAT 25°16.0'S, LONG 12°30.0'W. You are on course 012°T at a speed of 14 knots. What will be the zone time of sunset at your vessel? 

    N a. 1702
    Y b. 1719
    N c. 1730
    N d. 1741
1458: On 6 August , your 1552 zone time DR position is LAT 24°26.0'S, LONG 73°19.0'E. At that time, you observe the Sun bearing 302°psc. The chronometer reads 10h 55m 07s, and the chronometer error is 02m 38s fast. The variation is 6°E. What is the deviation of the standard magnetic compass? 

    N a. 4.1°W
    N b. 4.6°E
    N c. 5.9°E
    Y d. 6.1°W
1477: On 27 June , your vessel's 0816 ZT DR position is LAT 22°14'S, LONG 53°52'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 12h 15m 02s, and the Sun is bearing 047.5° per standard magnetic compass. The chronometer error is 00m 46s slow, and the variation in the area is 6.0°E. What is the deviation of the standard magnetic compass? 

    N a. 1.5°E
    N b. 1.9°W
    Y c. 3.0°W
    N d. 3.0°E
1500: On September 9 , your 2130 zone time (ZD +5) DR position is LAT 45°08'N, LONG 82°38'W. At that time, you observe Polaris bearing 000.5°pgc. The chronometer time of the observation is 02h 26m 09s, and the chronometer is 1m 43s slow. The variation is 8.7°W. What is the gyro error? 

    Y a. 0.7°E
    N b. 1.2°E
    N c. 0.8°W
    N d. 9.4°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
1852: On 26 November , at 0535 ZT, while taking sights for a morning fix, you observe an unidentified planet bearing 074°T at an observed altitude (Ho) of 38°29.8'. Your DR position is LAT 27°18.9'S, LONG 30°18.4'E. The chronometer time of the sight is 03h 33m 16s, and the chronometer is 01m 48s slow. What planet did you observe? 

    Y a. Saturn
    N b. Jupiter
    N c. Mars
    N d. Venus
1881: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E, when you observed a faint unidentifiable star through a hole in the clouds. The star bore 148.0°T at a sextant altitude (hs) of 32°24.3'. The chronometer read 11h 24m 39s and is 05m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe? 

    N a. Beta Gruis
    Y b. Alpha Tucanae
    N c. Beta Aquarii
    N d. Alpha Indi
2011: On 3 February , your 0547 zone time DR position is LAT 24°18.5'N, LONG 167°25.0'E. Considering their magnitude,
azimuth, and altitude, which group includes the three bodies best suited for a fix at star time? 

    Y a. Regulus, Deneb, Antares
    N b. Altair, Saturn, Regulus
    N c. Arcturus, Kochab, Venus
    N d. Jupiter, Denebola, Regulus
2022: On 24 August , your vessel is enroute from Perth, Australia, to Bombay, India. Evening twilight will occur at 1807 zone time, and your vessel's DR position for this time will be LAT 27°17.0'S, LONG 83°17.0'E. Considering their magnitude and location, what are the three stars best suited to observe for a fix at star time? 

    N a. Arcturus, Antares, Atria
    Y b. Spica, Altair, Acrux
    N c. Pollux, Canopus, Hamal
    N d. Rasalhague, Spica, Kochab
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
2293: As you pass under the Baton Rouge R.R. and Hwy 190 Bridge C233.9 AHP), you find that the Kinder Morgan Bulk Terminals are indicated by which numbered box? 

    Y a. 10
    N b. 9
    N c. 8
    N d. 7
2667: Your vessel is on a course of 255°T, at 14 knots. At 2126 a lighthouse is sighted dead ahead at a distance of 11 miles. You change course at this time to pass the lighthouse 3 miles abeam to port. What will be your ETA at this position off the lighthouse? 

    N a. 2149
    N b. 2201
    Y c. 2211
    N d. 2228
2682: While on a course of 066°pgc, a light bears 18° on the port bow at a distance of 12.3 miles. What course should you steer to leave the light 4 miles abeam to port? 

    Y a. 067°pgc
    N b. 072°pgc
    N c. 079°pgc
    N d. 085°pgc
2875: Your vessel is on a course of 316°T at 12 knots. At 2326 a light bears 289.5°T, and at 2354 the light bears 271°T. At what time and at what distance off will your vessel be when abeam of the light? 

    N a. 0014, 4.8 miles
    N b. 0018, 5.2 miles
    Y c. 0022, 5.6 miles
    N d. 0026, 6.4 miles
3081: If the speed necessary for reaching port at a designated time is 12.6 knots and the pitch of the propeller is 13.6 feet, how many revolutions per minute will the shaft have to turn, assuming no slip? 

    N a. 81
    N b. 85
    N c. 90
    Y d. 94
3277: While steaming at 12.3 knots, your vessel burns 168 bbls of fuel per day. What will be the rate of fuel consumption if you increase speed to 13.5 knots? 

    N a. 192 bbls/day
    N b. 204 bbls/day
    Y c. 222 bbls/day
    N d. 238 bbls/day
3284: While steaming at 18.9 knots, your vessel consumes 386 barrels of fuel oil per day. In order to reduce consumption to 251 barrels of fuel oil per day, what is the maximum speed the vessel can turn for? 

    N a. 11.6 knots
    N b. 12.3 knots
    N c. 15.2 knots
    Y d. 16.4 knots
3291: While steaming at 19.5 knots, your vessel burns 297 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 15 knots? 

    Y a. 135 bbls
    N b. 176 bbls
    N c. 229 bbls
    N d. 243 bbls
4004: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 166°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 354° 122.5° - 114° 239.5° - 234°
030.5° - 024° 152.0° - 144° 269.0° - 264°
061.5° - 054° 181.0° - 174° 298.0° - 294°
092.0° - 084° 210.0° - 204° 327.5° - 324° 

    N a. 2.0°W
    Y b. 1.5°W
    N c. 1.0°W
    N d. 0.5°W
10108: What is the base course per standard magnetic compass while southbound in the middle leg of York Spit Channel? 

    N a. 161.0°psc
    N b. 165.5°psc
    N c. 180.0°psc
    Y d. 184.0°psc
10502: At 1239 your GPS indicates a position of LAT 36°55.2'N, LONG 75°33.1'W. You are on course 281° per standard magnetic compass at a speed of 9.2 knots. At 1318 your GPS indicates your position as LAT 36°54.8'N, LONG 75°39.8'W. What were the set and drift? 

    Y a. 130°T at 1.2 knots
    N b. 156°T at 0.6 knot
    N c. 352°T at 1.3 knots
    N d. 335°T at 1.0 knot
11505: At 1014 you depart the entrance to Lake Montauk with light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1230 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good? 

    N a. 8.0 knots
    N b. 8.3 knots
    Y c. 8.6 knots
    N d. 8.9 knots
12203: Your vessel is steady on a heading of 310° per standard magnetic compass when you sight Stratford Point Light and Igor I. Sikorsky Airport Aero Beacon in line dead ahead. This information indicates that the __________. 

    N a. existing deviation table is correct for this heading
    N b. deviation is 1°E
    N c. variation is 18°W for this area
    Y d. compass error is 10°W
12505: You are on course 056°psc, when you take the following bearings:
New Point Comfort Spit Light "2" 260°psc Horn Harbor Entrance Light "HH" 285°psc Wolf Trap Light 336°psc What is the position of the fix? 

    Y a. LAT 37°19.3'N, LONG 76°08.5'W
    N b. LAT 37°19.3'N, LONG 76°08.8'W
    N c. LAT 37°19.2'N, LONG 76°08.2'W
    N d. LAT 37°19.2'N, LONG 76°08.7'W
13002: At 0829 your position is LAT 41°02.9'N, LONG 72°57.4'W. You are making turns for 8.5 knots. What is your ETA at a position midway between buoys "1" and "2" at the entrance of New Haven Outer Channel? 

    N a. 0925
    N b. 0931
    N c. 0938
    Y d. 0944
13307: The soundings on the chart are based on the depth of water available at __________. 

    N a. mean low water
    Y b. mean lower low water
    N c. mean high water
    N d. mean high water springs
13407: Your position is LAT 41°03.0'N, LONG 72°42.1'W. If your draft is 8 ft, what should your fathometer read at this position? 

    Y a. 80 ft
    N b. 88 ft
    N c. 96 ft
    N d. 99 ft
15260: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 4°
leeway. What course should you steer per standard magnetic compass in order to make good your true course? 

    N a. 101°psc
    N b. 108°psc
    N c. 110°psc
    Y d. 115°psc
15413: From your 1915 fix you come right and steer a course of 200°T. At 2000, your position is LAT 37°05.5'N, LONG 76°07.0'W. Your intention is to pass through Chesapeake Channel. If there are no set and drift, what course would you steer per standard magnetic compass to make good a course of 145°T? 

    N a. 134°
    N b. 139°
    N c. 151°
    Y d. 156°
15540: At 2200 Middle Ground Light is bearing 270° true at 9 nm

Which statement is TRUE? 

    N a. The current is flooding.
    Y b. You are being set to the left of the track.
    N c. The set is towards the southwest.
    N d. The drift is 0.6 knot.
15546: At 2350 the gyro is restored to service. At 0016 the visibility improves. At 0028 you sight Bartlett Reef Light in line with New London Harbor Light bearing 039°pgc. What is the gyro error? 

    Y a. 2°E
    N b. 0°
    N c. 2°W
    N d. 4°W
15906: As you enter the New Haven Outer Channel, you sight the range markers in line directly over the stern. Your heading at the time is 155.5° per gyrocompass. What is the gyro error? 

    N a. 1.0°E
    N b. 1.0°W
    Y c. 2.0°W
    N d. 0°
15942: At 1959 Watch Hill Point Light bears 030°T, Montauk Point Light bears 146°T, and Little Gull Light bears 283°T. What is the approximate fathometer reading? 

    Y a. 51 feet
    N b. 73 feet
    N c. 95 feet
    N d. 111 feet
15958: Your 1752 position is __________. 

    N a. less than 0.2 mile to the west of York Spit Channel
    N b. less than 0.2 mile to the east of York Spit Channel
    Y c. more than 0.2 mile to the west of York Spit Channel
    N d. more than 0.2 mile to the east of York Spit Channel
16266: The abandoned lighthouse at Cape Henry is a(n) __________. 

    N a. octagonal, black and white tower
    N b. radio beacon station
    N c. emergency back up to Cape Henry Light
    Y d. gray, pyramidal tower
16343: At 2302 you change course to compensate for an estimated current of 090°T, at 1.0 knot. What course per gyrocompass will you steer to leave Endeavor Shoals Lighted Gong Buoy "3" abeam to port at 1 mile? 

    N a. 324°pgc
    Y b. 327°pgc
    N c. 330°pgc
    N d. 333°pgc