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.

102: The latest available information on the channel conditions above Baton Rouge that includes recommended course and the latest buoy information is found in the __________.
291: What is the height above water of Davis Creek Channel Light "1"?
298: 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?
309: A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mid-latitude sailing? 

    N a. 117.3°T, 503.0 miles
    N b. 117.9°T, 504.0 miles
    N c. 118.6°T, 508.0 miles
    Y d. 119.2°T, 512.0 miles
320: At 2150, your position is LAT 36°57.2'N, LONG 76°01.3'W. In this position on the chart, you note a light magenta line running in a direction of 030°T. This line indicates the limits of __________. 

    Y a. a pilotage area
    N b. a precautionary area
    N c. the Cape Henry Light red sector
    N d. chart 12222
365: You sighted Trestle "A" in line at 0707 and are steering 108°T. At 0731, Cape Henry Light bears 136°T; Cape Charles Light bears 032.5°T; and Thimble Shoal Tunnel South Light bears 282°T. What was the speed made good between 0707 and 0731? 

    N a. 9.4 knots
    N b. 9.2 knots
    Y c. 8.8 knots
    N d. 8.3 knots
368: You will enter waters governed by the International Rules when __________. 

    N a. you cross the territorial sea boundary line
    N b. abeam of buoy "CBJ"
    Y c. Cape Charles Light bears 022°T
    N d. you cross the boundary of the contiguous zone
381: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City? 

    Y a. 129°pgc
    N b. 123°pgc
    N c. 117°pgc
    N d. 109°pgc
382: You arrive at Cape Charles City at 1700 and depart at 1800. You are underway in Chesapeake Bay and encounter heavy fog. At 1830, you obtain the following radar information:

Old Plantation Flats Light bearing 041.5° true @ 1.9 nm

What is your 1830 position? 

    N a. LAT 37°10.3'N, LONG 76°04.5'W
    N b. LAT 37°10.3'N, LONG 76°06.5'W
    N c. LAT 37°12.3'N, LONG 76°06.5'W
    Y d. LAT 37°12.3'N, LONG 76°04.4'W
620: On 21 May , at 0630 PDT (ZD +7), your vessel takes departure at the San Francisco Sea Buoy, LAT 37°45.0'N, LONG 122°41.5'W, enroute to Kobe, LAT 33°52.0'N, LONG 135°00.0'E via great circle. The distance is 4,245 miles, and you estimate that you will average 14.0 knots. What will be your estimated zone time of arrival? 

    N a. 0442, 2 June
    N b. 1342, 2 June
    N c. 0442, 3 June
    Y d. 1342, 3 June
729: On 24 September , your 1841 zone time DR position is LONG 129°34.5'E. At that time you observe Polaris with a sextant altitude (hs) of 25°20.8'. The chronometer time of the sight is 09h 38m 12s, and the chronometer error is 03m 12s slow. The index error is 4.3' off the arc, and the height of eye is 52 feet (15.9 meters). What is your latitude by Polaris? 

    N a. 24°28.1'N
    N b. 25°16.0'N
    Y c. 25°37.6'N
    N d. 25°42.3'N
739: On 29 April , your 1913 zone time DR position is LAT 22°09.0'N, LONG 56°16.0'W. At that time you observe Polaris with a sextant altitude (hs) of 22°25.8'. The chronometer time of the sight is 11h 11m 14s, and the chronometer error is 02m 18s slow. The index error is 1.5' off the arc, and the height of eye is 61.5 feet. What is your latitude by Polaris? 

    N a. 21°39.9'N
    N b. 21°55.7'N
    Y c. 22°39.9'N
    N d. 22°48.8'N
740: On 14 March , your 1846 ZT DR position is LAT 21°57.6'N, LONG 132°16.2'W. At that time you observe Polaris with a sextant altitude (hs) of 22°16.8'. The chronometer time of the sight is 03h 45m 10s, and the chronometer error is 01m 32s slow. The index error is 3.2' off the arc, and the height of eye is 44.9 feet. What is your latitude by Polaris? 

    N a. 21°32.4'N
    Y b. 21°49.8'N
    N c. 21°51.0'N
    N d. 21°53.1'N
998: On 23 May , your 0628 zone time position was LAT 28°18.0'S, LONG 102°42.0'E. Your vessel was steaming on course 040°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0758 ZT. The chronometer read 01h 02m 06s and was fast 04m 04s. The observed altitude (Ho) was 13°16.7'. LAN occurred at 1201 zone time. The observed altitude (Ho) was 42°32.0'. What was the longitude of your 1201 zone time running fix? 

    N a. 103°57.9'E
    N b. 104°00.4'E
    Y c. 104°03.5'E
    N d. 104°06.3'E
1134: What company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)? 

    N a. Helena Port Terminal, Inc.
    Y b. Riceland Food Corps..
    N c. Quincy Soybean Co.
    N d. Texas Eastern Pipeline Co.
1201: On 10 October , your 0930 zone time position is LAT 25°00.0'S, LONG 164°38.6'W. Your vessel is on course 180°T at a speed to 10.0 knots. What is the zone time of local apparent noon (LAN)? 

    Y a. 1145
    N b. 1151
    N c. 1203
    N d. 1206
1203: You are keeping ZD +4 on your vessel. On 21 June ,
at 0906 DST, your position is LAT 30°48.0'N,
LONG 71°00.0'W. You are on a course of 167°T at 15.2 knots. At what time will local apparent noon (LAN) occur ZT at your vessel? You are keeping DST. 

    N a. 1145
    N b. 1202
    N c. 1218
    Y d. 1245
1214: It is 25 February and you are keeping zone time +4. You are on course 283°T, speed 22 knots. Your 0900 DR position is LAT 29°10.3'N, LONG 72°04.9'W. What is the time of the second estimate of LAN by ship's clocks? 

    N a. 13h 08m 56s
    Y b. 13h 08m 02s
    N c. 12h 41m 36s
    N d. 12h 07m 56s
1416: Which 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
    N c. Mid-Delta Helena, LLC
    Y d. Baxter Wilson
1424: You pass Springfield Bend Lt. (mile 244.8 AHP) at 1242, on 17 October, and estimate the current will average 2.5 mph for the remainder of your trip. What is your ETA at the mouth of the Ohio River if you are making turns for 10.5 mph? 

    N a. 1905, 19 October
    N b. 2122, 19 October
    Y c. 0519, 21 October
    N d. 0847, 21 October
1536: As you approach Casting Yard Dock Lt. (mile 265.4 AHP) you notice on the map a circle with 2 black sectors. This symbol indicates a __________. 

    N a. lock
    N b. warning sign
    Y c. river gage
    N d. mooring buoy
1663: On 7 April , in DR position LAT 27°42.0'N, LONG 114°03.0'W, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 076°psc. The chronometer reads 02h 10m 17s and is 01m 52s slow. Variation in the area is 8°E. What is the deviation of the standard magnetic compass? 

    Y a. 1.8°W
    N b. 2.3°E
    N c. 6.2°E
    N d. 7.8°W
1731: What is the total length of the trip? 

    N a. 910.6 miles
    Y b. 901.2 miles
    N c. 900.3 miles
    N d. 873.7 miles
2160: On 17 April , your vessel's 1856 zone time DR position is LAT 22°35.0'N, LONG 63°15.0'W. At that time, a sextant observation of the star Sirius is made. The sextant altitude is 42°45.0' and the chronometer reads 10h 59m 27s.
The index error is 2.6' off the arc, and the chronometer error is 03m 01s fast. Your height of eye is determined to be 45 feet. What is the computed altitude (hc) and azimuth (Zn) for this sight using the assumed position? 

    N a. 42°40.0', 214.9°T
    N b. 42°40.0', 325.1°T
    Y c. 42°51.6', 214.9°T
    N d. 42°51.6', 325.1°T
2165: On 25 February , at 0622 ZT, you observe the upper limb of the Moon with a sextant altitude of 59°58.6'. Your DR position is LAT 30°28.3'S, LONG 102°39.3 E. The chronometer reading at the time of the sight is 11h 21m 18s and the chronometer is 48s slow. The height of eye is 59 feet and the index error is 2.5' on the arc. What are the azimuth (Zn) and intercept (a) of this sight using the assumed position? 

    Y a. Zn 305.4°, a 4.2°T
    N b. Zn 234.6°, a 4.2° A
    N c. Zn 305.4°, a 1.5°T
    N d. Zn 305.4°, a 9.2°T
2341: You have steamed 1175 miles at 19 knots, and consumed 257 tons of fuel. If you have to steam 1341 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots? 

    N a. 293 tons
    Y b. 263 tons
    N c. 202 tons
    N d. 172 tons
2697: You are underway on course 106°T at a speed of 15.3 knots.
You sight a buoy bearing 109°T at a radar range of 3.6 miles at 1725. If you change course at 1728, what is the course to steer to leave the buoy abeam to port at 0.5 mile? 

    N a. 100°T
    N b. 117°T
    Y c. 120°T
    N d. 125°T
3059: The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the vessel cruised 458 miles in a 23 hour day (observed distance) at an average RPM of 78? 

    N a. +5.6%
    Y b. -5.6%
    N c. +12.3%
    N d. -12.3%
3269: Your vessel arrives in port with sufficient fuel to steam 812 miles at 15 knots. If you are unable to take on bunkers, at what speed must you proceed to reach your next port, 928 miles distant? 

    N a. 13.6 knots
    Y b. 14.0 knots
    N c. 15.3 knots
    N d. 15.7 knots
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
3615: You want to make good a true course of 137°. A north-northeast wind produces a 3° leeway. The variation is 11° west, deviation is 5° east, and gyrocompass error is 2° east. What course must you steer per gyrocompass to make the true course good? 

    Y a. 132°pgc
    N b. 134°pgc
    N c. 136°pgc
    N d. 138°pgc
3629: You desire to make good a true course of 129°. The variation is 7°E, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. An easterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good? 

    Y a. 114°psc
    N b. 116°psc
    N c. 122°psc
    N d. 126°psc
3648: The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good? 

    N a. 305°pgc
    Y b. 311°pgc
    N c. 315°pgc
    N d. 318°pgc
10612: You are taking a time tick using the 2000 signal from Kekaha-Kauai, Hawaii (WWVH). You hear a series of 1 second dashes followed by a 9 second silent period, then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 08h 00m 08s. When compared to the chronometer, the comparing watch reads 08h 01m 15s, and the chronometer reads 07h 59m 55s. What is the chronometer error? 

    N a. 0m 08s fast
    N b. 1m 07s fast
    Y c. 1m 12s slow
    N d. 1m 28s slow
10706: At 0726 you depart Lake Montauk with light 1 close aboard and set course 310.5° per standard magnetic compass at 7.6 knots. At 0812 your GPS position is LAT 41°08.1'N, LONG 72°03.7'W. What is the current? 

    N a. 151°T at 1.0 knot
    N b. 164°T at 0.7 knot
    Y c. 334°T at 1.4 knot
    N d. 321°T at 0.8 knot
11501: At 2016 your GPS position is LAT 41°07.6'N, LONG 71°33.8'W. At 2128 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions? 

    N a. 11.9 knots
    N b. 10.2 knots
    N c. 8.9 knots
    Y d. 6.7 knots
11501: At 2016 your GPS position is LAT 41°07.6'N, LONG 71°33.8'W. At 2128 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions? 

    N a. 11.9 knots
    N b. 10.2 knots
    N c. 8.9 knots
    Y d. 6.7 knots
12507: You are on course 300° per standard magnetic compass (psc) when you take the following bearings: New Point Comfort Spit Light "2" 240°psc Horn Harbor Entrance Light HH 268°psc Wolf Trap Light 003°psc What is the position of the fix? 

    N a. LAT 37°20.8'N, LONG 76°09.6'W
    Y b. LAT 37°20.8'N, LONG 76°11.0'W
    N c. LAT 37°20.9'N, LONG 76°11.5'W
    N d. LAT 37°21.1'N, LONG 76°08.2'W
12904: Your 0916 position is LAT 37°10.9'N, LONG 75°29.6'W. You are turning for 12.3 knots. What is your ETA at North Chesapeake Bay Entrance Buoy NCA? 

    N a. 1035
    N b. 1043
    Y c. 1051
    N d. 1101
13101: At 1523 your position is LAT 41°08.2'N, LONG 71°34.4'W. You are turning for 8.7 knots. What is your ETA at Shagwong Reef Buoy "7SR"? 

    N a. 1653
    N b. 1700
    Y c. 1711
    N d. 1718
13900: The trapezoidal shaped areas enclosed by a thin broken magenta line and located along the south coast of Long Island are __________. 

    N a. designated training areas for Navy amphibious craft
    N b. disposal areas for unexploded munitions
    Y c. fish trap areas
    N d. anchorage areas for small craft
15014: If you make good 12 knots, what is the ETA at North Chesapeake Channel Entrance Buoy "NCA" (LL #375)? 

    N a. 2116
    Y b. 2111
    N c. 2106
    N d. 2101
15241: At 1155 your vessel's position is LAT 41°09.0'N, LONG 72°34.4'W. If you make good a course of 282°T and a speed of 10.0 knots, when will you arrive at New Haven Harbor Lighted Whistle Buoy "NH"? 

    N a. 1315
    N b. 1320
    Y c. 1325
    N d. 1330
15370: If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________. 

    N a. 11.1 miles
    N b. 12.8 miles
    Y c. 15.6 miles
    N d. 18.0 miles
15506: You are underway in the vicinity of Block Island and obtain the following lines of position:

Montauk Point Light 263°pgc
Block Island Southeast Light 026°pgc
Radar Bearing to Block Island Southwest Point 348°pgc

What is your position at the time of these sightings? 

    N a. LAT 41°05.0'N, LONG 71°36.2'W
    N b. LAT 41°05.1'N, LONG 71°36.0'W
    Y c. LAT 41°05.3'N, LONG 71°35.8'W
    N d. LAT 41°05.4'N, LONG 71°35.5'W
15610: At 1815, your position is LAT 37°01.0'N, LONG 75°42.7'W. If there is no current, what is the course per standard magnetic compass to arrive at a point 0.3 mile due north of North Chesapeake Entrance Lighted Whistle Buoy "NCA"
(LL#375)? 

    N a. 249.0°
    N b. 251.5°
    N c. 255.0°
    Y d. 257.0°
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°
15917: At what approximate distance would you expect Bartlett Reef Light to break the horizon, if the visibility is 27 nautical miles? 

    N a. 5.9 nm
    N b. 6.9 nm
    N c. 12.0 nm
    Y d. 12.8 nm
16261: At 0400 you take the following bearings:

Sand Shoal Inlet South Light bearing 299°pgc
Cape Charles Light bearing 242°pgc

What is your 0400 position? 

    N a. LAT 37°14.2'N, LONG 75°39.2'W
    Y b. LAT 37°14.4'N, LONG 75°39.3'W
    N c. LAT 37°14.4'N, LONG 75°39.0'W
    N d. LAT 37°14.6'N, LONG 75°39.2'W
16309: From your 0530 position, you set a course of 271°psc with an engine speed of 9 knots. At 0645, Cornfield Safe-Water Buoy "CF" is abeam to port. What speed have you averaged since 0530? 

    N a. 7.5 knots
    Y b. 8.6 knots
    N c. 9.0 knots
    N d. 9.5 knots
16310: At 0730, your position is LAT 41°10.5'N, LONG 72°32.2'W. From this position you steer course 286°psc with an engine speed of 9.0 knots. What is the approximate depth of water under your keel? 

    Y a. 52 feet (15.8 meters)
    N b. 57 feet (17.3 meters)
    N c. 62 feet (18.8 meters)
    N d. 67 feet (20.3 meters)
16409: At 0337, fog closes in and you anchor under the following radar ranges and bearing.

South tip of Watch Hill Point 3.0 miles
East point of Fishers Island 1.4 miles
Latimer Reef Light 331°T

What is the approximate depth of water at your anchorage? 

    N a. 83 feet (25.2 meters)
    Y b. 100 feet (30.3 meters)
    N c. 120 feet (36.4 meters)
    N d. 135 feet (40.9 meters)