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.


110: As you pass under the Baton Rouge RR and Highway 190 bridge you receive a call from another tow upriver. What channel on the VHF should you be monitoring?


225: From your 1920 position, you change course to enter Chesapeake Channel between buoys 9 and 10. What is the course per standard magnetic compass (psc) ?


267: At 0802, Branford Reef Light bears 348°T at 0.75 mile, and the north point of Falkner Island bears 088°T at 6.7 miles. What were the set and drift since 0740?


285: At 1845, you plot the following bearing lines:

Old Plantation Flats Light bearing 251°true
New Point Comfort Light bearing 335°true

Your latitude is __________.

    N a. 37°10.7'N
    N b. 37°10.9'N
    Y c. 37°11.2'N
    N d. 37°11.6'N

328: From your 0315 position, what time can you expect to reach York Spit Channel Buoys "37" and "38"?

    N a. 0423
    N b. 0417
    N c. 0412
    Y d. 0405

424: From your 0530 position, you set a course of 271°psc with an engine speed of 9 knots. At 0645, Cornfield Safe-Water Buoy is abeam to starboard. What speed have you averaged since 0530?

    N a. 9.5 knots
    N b. 9.0 knots
    Y c. 8.6 knots
    N d. 7.5 knots

430: At 0820, you change course to 301°psc and reduce speed to 7.5 knots. At 0900, you take the following visual bearings:

Branford Reef Light 023°psc
New Haven Light 293°psc
Tweed Airport Aerobeacon 332°psc

Your 0900 position is __________.

    N a. LAT 41°11.9'N, LONG 72°50.6'W
    Y b. LAT 41°12.1'N, LONG 72°48.6'W
    N c. LAT 41°12.3'N, LONG 72°47.7'W
    N d. LAT 41°12.5'N, LONG 72°44.3'W

492: At 0748, you change course to 160°T. What loran reading can you follow to remain on this course?

    N a. 9960-W-14660.0
    Y b. 9960-W-14651.0
    N c. 9960-Y-43943.8
    N d. 9960-Y-43852.0

569: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?

    N a. LAT 36°59.8'N, LONG 76°18.0'W
    Y b. LAT 36°59.5'N, LONG 76°18.4'W
    N c. LAT 36°59.0'N, LONG 76°19.6'W
    N d. LAT 36°55.5'N, LONG 76°18.6'W

996: On 30 August your 0554 zone time (ZT) position was LAT 25°39.0'S, LONG 31°51.0'E. Your vessel was steaming on course 325°T at a speed of 15.0 knots. An observation of the Sun's lower limb was made at 0836 ZT. The chronometer read 06h 38m 36s and was fast 02m 24s. The observed altitude (Ho) was 30°49.2'. LAN occurred at 1157 ZT. The observed altitude (Ho) was 56°40.0'. What was the longitude of your 1157 ZT running fix?

    N a. 30°59.8'E
    N b. 30°57.6'E
    N c. 30°55.9'E
    Y d. 30°52.5'E

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

1105: On 28 May , your 0200 DR position is LAT 19°16.5'S , LONG 119°24.0'W. You are on course 107°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0034

    Y a. LAT 19°43.0'S, LONG 117°54.0'W
    N b. LAT 19°48.2'S, LONG 118°04.5'W
    N c. LAT 20°07.5'S, LONG 117°32.0'W
    N d. LAT 20°17.1'S, LONG 118°06.0'W

1215: It is 9 February and you are keeping zone time -6. You are on course 258°T, speed 19 knots. Your 0840 DR position is LAT 26°21.0'S, LONG 78°39.0'E. What is the time of the second estimate of LAN by ship's clocks?

    N a. 12h 05m 21s
    N b. 12h 37m 12s
    N c. 13h 13m 40s
    Y d. 13h 05m 44s

1230: At 1814, on 11 September, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 0930 the following day?

    Y a. 8.7 mph
    N b. 7.7 mph
    N c. 6.3 mph
    N d. 5.6 mph

1240: As you approach Ashland Light (mile 378.1 AHP), which type of daymark would you see on the light structure?

    N a. Green square
    N b. Green diamond
    N c. Red diamond
    Y d. Red triangle

1408: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.

    N a. 443
    N b. 500
    Y c. 623
    N d. 748

1410: What is the distance from the Amoco Docks at Baton Rouge, LA, to Pittsburgh, PA?

    Y a. 1681 miles
    N b. 1575 miles
    N c. 981 miles
    N d. 727 miles

1485: On 6 October , your 0416 zone time DR position is LAT 25°16.0'N, LONG 130°25.0'E. At that time, you observe Mars bearing 083°psc. The chronometer reads 07h 16m 22s, and the chronometer error is 00m 10s fast. The variation is 1.5°E. What is the deviation of the standard compass?

    N a. 0.4°E
    Y b. 1.2°W
    N c. 3.5°E
    N d. 19.0°E

1665: On 11 January , your vessel's 0655 zone time DR position is LAT 24°30'N, LONG 122°02'W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 101.0° per standard compass. Variation in the area is 11.6°E. The chronometer reads 02h 52m 48s and is 02m 12s slow. What is the deviation of the standard compass?

    Y a. 1.4°E
    N b. 1.4°W
    N c. 4.6°E
    N d. 4.6°W

1772: What is your ETA at the Fulton Gage?

    N a. 1405, 12 Sept
    N b. 1052, 12 Sept
    N c. 0828, 12 Sept
    Y d. 0204, 12 Sept

1808: You are on map #4. What is the mile point of the facility known as Gulf Coast Grain Co.?

    N a. mile 920 AHP
    N b. mile 921 AHP
    N c. mile 922 AHP
    Y d. mile 923 AHP

1866: On 12 June , your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 019.0°T at a sextant altitude (hs) of 53°56.2'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?

    N a. Phecda
    N b. Mimosa
    N c. Gamma Ursae Minoris
    Y d. Mizar

2018: On 11 November , your 0200 zone time DR position is LAT 26°32'S, LONG 154°16'E. You are on course 058°T at a speed of 21 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?

    N a. Polaris, Regulus, Rigel
    N b. Jupiter, Spica, Canopus
    N c. Saturn, Peacock, Rigel
    Y d. Mars, Betelgeuse, Miaplacidus

2172: On 11 October , at 0516 ZT, morning stars were observed, and the vessel's position was determined to be LAT 23°21.0'N, LONG 139°27.0'W. Your vessel is steaming at 14.0 knots on a course of 293°T. A sextant observation of the Sun's lower limb is made at 0927 ZT. The chronometer reads 06h 30m 21s, and the sextant altitude (hs) is 39°48.7'. The index error is 2.0' on the arc, and the chronometer error is 02m 56s fast. Your height of eye on the bridge is 63.0 feet. What is the azimuth (Zn) of this sight using the assumed position?

    N a. 116.2°T
    Y b. 123.4°T
    N c. 126.2°T
    N d. 128.4°T

2204: The Clinch River empties into which river?

    N a. Arkansas
    N b. Mississippi
    N c. Ohio
    Y d. Tennessee

2588: At 2130 New Haven buoy "NH" bears 337° per gyro compass and Middle Ground Lt bears 254° per gyro compass. You must arrive 0.3 miles off Port Jefferson buoy "PJ" at 2300. What speed will you have to make good, for arrival at 2300?

    N a. 9.0 knots
    Y b. 9.3 knots
    N c. 9.6 knots
    N d. 10.7 knots

2699: You are underway on course 137°T at a speed of 16.2 knots. You sight a rock bearing 134°T at a radar range of 4.6 miles at 1508. If you change course at 1514, what is the course to steer to leave the rock abeam to port at 1.5 miles?

    Y a. 162°T
    N b. 158°T
    N c. 154°T
    N d. 151°T

2909: You are running coastwise at 14 knots. You sight a lighthouse abeam at 0912. At 0939 the lighthouse is 4 points abaft the beam. What is your distance off at the second bearing?

    N a. 5.5 miles
    N b. 6.3 miles
    N c. 7.8 miles
    Y d. 8.9 miles

3063: The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?

    N a. +0.7%
    N b. -0.7%
    Y c. +7.0%
    N d. -7.0%

3275: You have steamed 989 miles at 16.5 knots, and consumed 215 tons of fuel. If you have 345 tons of usable fuel remaining, how far can you steam at 13 knots?

    N a. 1025 miles
    N b. 1993 miles
    Y c. 2557 miles
    N d. 3245 miles

3603: You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good?
DEVIATION TABLE
MAG HDG DEV
300° 2°E
315° 0°
330° 2°W

    N a. 301°T
    N b. 303°T
    N c. 327°T
    Y d. 329°T

3631: You desire to make good a true course of 329°. The variation is 13° W, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. A southerly wind produces a 1° leeway. What is the course to steer per standard magnetic compass to make the true course good?

    N a. 319°psc
    N b. 321°psc
    Y c. 337°psc
    N d. 339°psc

3753: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?

    N a. 1°E
    N b. 1°W
    Y c. 4°E
    N d. 4°W

3755: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 186°T, and the variation is 11°W. If the heading of your vessel at the time of the sighting is 193° per standard magnetic compass, what is the correct deviation?

    Y a. 4°E
    N b. 4°W
    N c. 7°E
    N d. 7°W

10100: Your GPS position is LAT 36°59.0'N, LONG 75°48.6'W. What is the course per standard magnetic compass to a position one mile south of Cape Charles Buoy "14" (which is positioned at LAT 37°07.4'N, LONG 75°41.0'W)?

    Y a. 045°psc
    N b. 049°psc
    N c. 053°psc
    N d. 057°psc

10103: Your GPS position is LAT 37°01.5'N, LONG 75°31.7'W. What is the course per standard magnetic compass to Chesapeake Light?

    Y a. 243°
    N b. 240°
    N c. 237°
    N d. 231°

11803: What is the true course to steer between Falkner Island Light and Horton Point Light, if the set and drift of the current are 041° at 2.4 knots, and a northeasterly wind will cause 4° of leeway? Your engines are making turns for 15 knots.

    N a. 116°T
    N b. 124°T
    Y c. 134°T
    N d. 142°T

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

14101: What signal is given by air horn to indicate that Bonneville Lock is ready for entrance?

    N a. two long blasts
    N b. two short blasts
    N c. one short blast
    Y d. one long blast

14101: What signal is given by air horn to indicate that Bonneville Lock is ready for entrance?

    N a. two long blasts
    N b. two short blasts
    N c. one short blast
    Y d. one long blast

15060: At 0802, the radar range and bearing to Branford Reef Light are 350°pgc at 0.8 mile, and the north point of Falkner Island are 090°pgc at 6.7 miles. What were the set and drift that you encountered since 0740?

    N a. Set 085°T, drift .2 knot
    Y b. Set 085°T, drift .6 knot
    N c. Set 265°T, drift .2 knot
    N d. Set 265°T, drift .6 knot

15539: At 2127 you are on course 076°T. What is your ETA at a position where Twenty Eight Foot Shoal Lighted Bell Buoy "TE" is abeam to port?

    N a. 2316
    N b. 2324
    Y c. 2332
    N d. 2345

15762: What is the course per standard magnetic compass between points "A" and "B"?

    N a. 090.5°
    N b. 093.0°
    N c. 095.5°
    Y d. 098.5°

15857: You are southeast of Saybrook Breakwater Light passing a horizontally-banded buoy. This buoy marks __________.

    N a. a sunken wreck
    N b. a tide rips area
    N c. the junction with the Connecticut River
    Y d. shoal water

15961: At 1810, a red buoy bears 010° relative. This buoy marks __________.

    N a. the side of York Spit Channel
    N b. the visibility limit of the red sector of Cape Henry Light
    N c. a submerged obstruction in York Spit Channel
    Y d. the York River Entrance Channel

16012: If you change course at 0420, what is the course to make good to leave Twenty Eight Foot Shoal Lighted Buoy abeam to port at 1 mile?

    N a. 079°T
    N b. 082°T
    Y c. 084°T
    N d. 086°T

16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?

    N a. 5.0 knots
    N b. 5.3 knots
    N c. 5.8 knots
    Y d. 5.5 knots

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

16365: From your 0500 position, you change course to 221°T and order turns for 9.8 knots. At 0600 Chesapeake Light bears 143°pgc at a radar range of 6.5 miles. Cape Henry Light bears 252°pgc. What is the position of your 0600 fix?

    N a. LAT 36°59.1'N, LONG 75°48.1'W
    N b. LAT 36°59.1'N, LONG 75°47.6'W
    Y c. LAT 36°59.2'N, LONG 75°47.8'W
    N d. LAT 36°58.9'N, LONG 75°48.5'W

16611: At 0109 you get underway, and at 0112 you take the following set of bearings:

Branford Reef Light bearing 051°true
Stratford Point Light bearing 258°true

What is your 0112 position?

    N a. LAT 41°11.2'N, LONG 72°51.7'W
    N b. LAT 41°11.4'N, LONG 72°50.5'W
    Y c. LAT 41°11.4'N, LONG 72°51.3'W
    N d. LAT 41°11.8'N, LONG 72°51.5'W

16714: What was the current between 0520 and 0600?

    N a. 201° at 1.0 knot
    N b. 201° at 1.5 knot
    N c. 021° at 1.0 knot
    Y d. 021° at 1.5 knots