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.

34: You estimate the current at 3.0 mph. What is the speed over the ground?
62: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
103: You are approaching the Old River Control Structure (mile 314.5 AHP). The structure is in operation. Which of the following statements is TRUE?
156: What are the dimensions of the Old River Lock? 

    N a. 110 ft x 1190 ft
    N b. 100 ft x 990 ft
    N c. 75 ft x 1000 ft
    Y d. 75 ft x 1190 ft
184: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________. 

    N a. 40 feet (12.2 meters)
    Y b. 50 feet (15.2 meters)
    N c. 60 feet (18.3 meters)
    N d. 70 feet (23.2 meters)
187: At 2020, you obtain a fix using the following information:
9960-X-27112
9960-Y-41432

Cape Charles Lighted Bell Buoy "14" bears 333°pgc. Your longitude is __________. 

    N a. 75°38.9'W
    N b. 75°39.1'W
    Y c. 75°40.5'W
    N d. 75°41.4'W
212: If you were to head into Fishers Island Sound, which of the following charts would you switch to for better detail of Mystic and Mystic Harbor? 

    N a. 13209
    N b. 13212
    Y c. 13214
    N d. 13215
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? 

    Y a. York Spit Light
    N b. New Point Comfort Shoal Light
    N c. Mobjack Bay Entrance Light
    N d. York River Entrance Channel Light "1"
327: At 0315, you obtain the following bearings:

Wolf Trap Light bearing 091° true
Old Plantation Flats Light bearing 179° true

What is the true course from this position to the entrance of York Spit Channel? 

    N a. 217°
    N b. 211°
    Y c. 208°
    N d. 203°
436: At 0227, you take the following radar ranges and bearings: Bartlett Reef Light 359°T at 2.4 miles, Race Rock Light 083°T at 4.1 miles. What is your 0227 position? 

    N a. LAT 41°14.5'N,  LONG 72°08.0'W
    Y b. LAT 41°14.1'N,  LONG 72°08.2'W
    N c. LAT 41°14.0'N,  LONG 72°08.5'W
    N d. LAT 41°14.3'N,  LONG 72°08.5'W
459: Determine the great circle distance and initial course from LAT 25°47.0'N, LONG 79°59.5'W to LAT 38°42.0'N, LONG 09°10.5'W. 

    N a. 3341.0 miles, 063°T
    N b. 3347.0 miles, 063°T
    N c. 3427.8 miles, 061°T
    Y d. 3588.6 miles, 059°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
610: At 0820 zone time, on 10 April , you depart Yokohoma, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Honolulu, LAT 21°18.5'N, LONG 157°52.2'W (ZD +10) and you estimate your speed of advance at 17.5 knots. The distance is 3,397 miles. What is your estimated zone time of arrival at Honolulu? 

    N a. 0127, 17 April
    Y b. 1527, 17 April
    N c. 0127, 18 April
    N d. 0927, 18 April
812: On 28 July , your 0800 zone time (ZT) fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1150 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'. What is the latitude at 1200 ZT? 

    N a. 26°25.0'N
    Y b. 26°27.6'N
    N c. 26°29.8'N
    N d. 26°32.0'N
822: On 10 March , in DR position LAT 21°42.0'S, LONG 57°28.0'E, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 08h 28m 17s, and the chronometer error is 00m 00s. The sextant altitude (hs) is 72°08.0'. The index error is 3.4' on the arc, and your height of eye is 52.7 feet. What is the latitude at meridian transit? 

    N a. LAT 21°32.5'S
    N b. LAT 21°40.6'S
    Y c. LAT 21°45.5'S
    N d. LAT 21°50.2'S
823: On 15 October , an ex-meridian altitude of the Sun's lower limb at upper transit was observed at 1146 ZT. Your DR position is LAT 22°42.0'N, LONG 139°52.0'E, and your sextant altitude (hs) is 58°30.4'. The index error is 3.4' on the arc, and your height of eye is 56.7 feet. The chronometer time of the observation is 02h 45m 06s, and the chronometer error is 01m 06s slow. Find the latitude at meridian transit from the ex-meridian observation. 

    N a. LAT 22°29.1'N
    Y b. LAT 22°35.2'N
    N c. LAT 22°58.1'N
    N d. LAT 23°20.6'N
1163: What is the mile point of the Fulton Gage? 

    N a. 598 AHP
    N b. 632 AHP
    N c. 687 AHP
    Y d. 778 AHP
1250: What facility is not found near La Grange Towhead Light (538.2 AHP) on Greenville Harbour? 

    N a. Mississippi Limestone
    N b. Ergon, Inc.
    N c. American Commercial Barge Lines
    Y d. Greenville Casino Wharf
1274: On 13 February , at 0325 zone time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T at a speed of 13.6 knots. What is the zone time of sunrise? 

    N a. 0652
    Y b. 0657
    N c. 0706
    N d. 0711
1460: On 27 June , your 1905 ZT DR position is LAT 24°35.0'N, LONG 50°15.0'W. At that time, you observe Saturn bearing 211°pgc. The chronometer reads 10h 04m 26s and the chronometer error is 01m 20s slow. The variation is 4.5°E. What is the gyro error? 

    Y a. 1.1°W
    N b. 3.4°E
    N c. 3.4°W
    N d. 5.6°W
1472: On 9 February , your 0739 zone time DR position is LAT 23°31.0'N, LONG 143°41.0'E. At that time, you observe the Sun bearing 104.5°psc. The chronometer reads 09h 37m 12s, and the chronometer error is 01m 52s slow. The variation is 3.5°W. What is the deviation of the standard magnetic compass? 

    N a. 1.6°E
    N b. 2.3°W
    N c. 5.1°W
    Y d. 8.6°E
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
1712: What is the distance from Cairo Point, IL, to Arkansas City? 

    N a. 28 miles
    N b. 110 miles
    N c. 218 miles
    Y d. 400 miles
1778: At 2234 ZT, on 14 July , in DR position LAT 34°03'N, LONG 150°16'W you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 272.1°pgc. The variation is 14°E. What is the gyro error? 

    N a. 0.5°W
    N b. 0.5°E
    Y c. 1.5°W
    N d. 2.5°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
1928: On 17 March , your 0520 DR position is LAT 27°23.0'N, LONG 39°42.0'W. At this time you observe an unidentified star bearing 270°T with an observed altitude of 46°30.2'. The chronometer reads 08h 22m 15s, and is 01m 45s fast. What star did you observe? 

    N a. Altair
    N b. Alkaid
    Y c. Arcturus
    N d. Deneb
2162: On 5 April , at 0509 zone time, morning stars were observed and the vessel's position was LAT 28°32'N, LONG 177°13.0'W. Your vessel is steaming at 19.0 knots on a course of 258°T. A sextant observation of the Sun's lower limb is made at 1021 zone time. The chronometer reads 10h 20m 09s, and the sextant altitude (hs) is 58°06.6'. The index error is 1.0' off the arc, and the chronometer error is 00m 54s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position? 

    N a. 125.8°T
    N b. 128.8°T
    Y c. 129.2°T
    N d. 130.2°T
2174: On 18 October , at 0518 ZT, morning stars were observed and the vessel's position was determined to be LAT 25°31.0'N, LONG 146°29.2'E. Your vessel is steaming at 19.0 knots on a course of 308°T. A sextant observation of the Sun's lower limb is made at 0915 ZT. The chronometer reads 11h 17m 11s, and the sextant altitude (hs) is 34°51.4'. The index error is 2.0' off the arc, and the chronometer error is 01m 57s fast. Your height of eye on the bridge is 54.0 feet. What is the azimuth (Zn) of this sight using the assumed position? 

    N a. 120.6°T
    N b. 121.9°T
    Y c. 125.5°T
    N d. 127.3°T
2674: You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port? 

    Y a. 136°
    N b. 133°
    N c. 122°
    N d. 119°
2686: While on a course of 034°pgc, a light bears 8° on the port bow at a distance of 8.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to port? 

    N a. 035°pgc
    Y b. 043°pgc
    N c. 051°pgc
    N d. 059°pgc
3304: You have steamed 265 miles and consumed 25.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 346 miles? 

    Y a. 32.6 tons
    N b. 37.4 tons
    N c. 42.6 tons
    N d. 49.5 tons
3311: You have steamed 162 miles and consumed 14.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 285 miles? 

    Y a. 24.6 tons
    N b. 34.7 tons
    N c. 43.3 tons
    N d. 54.8 tons
3635: You desire to make good a true course of 236°. The variation is 8°E, magnetic compass deviation is 1°E, and gyrocompass error is 3°W. A south-southeasterly wind produces a 1° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good? 

    Y a. 226°psc
    N b. 228°psc
    N c. 244°psc
    N d. 246°psc
11010: What is the maximum speed permitted in Clinton Harbor? 

    Y a. 6 mph
    N b. 8 mph
    N c. 10 mph
    N d. 12 mph
11106: What is the height of the tide at Great Salt Pond, on Block Island, at the morning high water (daylight savings time) on 1 July 1983? 

    N a. 1.3 feet
    Y b. 2.3 feet
    N c. 3.2 feet
    N d. There is no morning high water
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
12602: You are on course 087° per standard magnetic compass (psc) when you take the following bearings: Falkner Island Light - 022.0°psc Horton Point Light - 111.5°psc Mt. Sinai Breakwater Light - 254.0°psc What is your position? 

    N a. LAT 41°13.6'N, LONG 72°46.6'W
    N b. LAT 41°10.5'N, LONG 72°40.5'W
    N c. LAT 41°07.0'N, LONG 72°44.5'W
    Y d. LAT 41°06.8'N, LONG 72°40.7'W
13100: Your position is LAT 41°15.2'N, LONG 71°50.1'W at 1347. You are turning for 6.9 knots. What is your ETA at Shagwong Reef Buoy "7SR"? 

    Y a. 1506
    N b. 1515
    N c. 1521
    N d. 1527
13301: The approach channel to the town of Cape Charles (LAT 37°16'N, LONG 76°01'W) has what controlling depth? 

    N a. 9 feet
    Y b. 17 feet
    N c. 20 feet
    N d. 40 feet
13801: You are operating in the area approximately 2 miles southeast of Kelsey Point when you realize that your vessel's intended track will carry you over the wreck charted at LAT 41°13.5'N, LONG 72°29.6'W. Which statement is TRUE? 

    N a. The chart indicates the exact position of the wreck.
    N b. The wreck has been cleared by wire drag to a depth of 39 ft.
    Y c. The wreck represents a danger to surface navigation.
    N d. The wreck is visible above the sounding datum.
14404: You are underway and proceeding in an easterly direction on the Columbia River. You position your vessel in the middle of the channel and bring Government Island Lower Range in line over your bow. What should your fathometer read at this position, if the staff gauge at Portland reads 10.0 feet? 

    Y a. 15 feet
    N b. 24 feet
    N c. 28 feet
    N d. 31 feet
15006: You are on course 192°pgc at 12 knots.
At 1900 your position is:
Latitude 37° 22.6' North
Longitude 075° 35.7' West

Which of the following is true? 

    N a. if you maintain course and speed you will pass Hog Island Bell Buoy "2" to stbd
    N b. you are inside the 3 nm territorial sea
    Y c. your fathometer reads 30'
    N d. None of the above
15213: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-0.3 meters), what is the approximate depth of water? 

    Y a. 53 feet (15.5 meters)
    N b. 46 feet (13.9 meters)
    N c. 40 feet (12.1 meters)
    N d. 35 feet (10.6 meters)
15245: After departing the New Haven terminals, your 1800 position puts the New Haven Harbor Lighted Bell Buoy "NH" bearing 130°T at a range of 0.2 mile. From this position you set a course to leave Stratford Shoal Middle Ground Light 1.0 mile off your starboard beam. Your speed is 12.5 knots. At 1845 you determine your position to be LAT 41°05.5'N,
LONG 73°03.1'W. What were the set and drift of the current? 

    N a. 294°T at 0.5 knot
    Y b. 294°T at 0.8 knot
    N c. 114°T at 0.5 knot
    N d. 114°T at 0.8 knot
15361: Your 0530 position is LAT 41°04.9'N, LONG 73°01.1'W. What is the course per standard magnetic compass to a position 1.0 mile south of Twenty Eight Foot Shoal "TE"
buoy? 

    N a. 082.0°psc
    N b. 092.5°psc
    N c. 096.0°psc
    Y d. 099.5°psc
15626: What type of daymark will you see as you approach Joe Pierce Light (mile 335.4 AHP)? 

    N a. Private aid - no daymark
    N b. Red square
    Y c. Red triangle
    N d. Red diamond
15713: What do the dotted lines around Goose Island and Kimberly Reef represent? 

    N a. Limiting danger
    N b. Breakers
    Y c. Depth contours
    N d. Tide rips
15717: From your 1210 position, you are steering a course of 083°
T. Your engines are turning RPMs for 10 knots. The set and drift of the current are 310° at 1.7 knots. At what time should you expect to enter the red sector of New London Harbor Light? 

    N a. 1241
    Y b. 1249
    N c. 1256
    N d. 1309
16214: From your 0715 position, you set a course of 085°T. At 0745 you take the following bearings:

Race Rock Light 278°pgc
Watch Hill Light 049°pgc
Fisher's Island East Harbor Cupola 010°pgc

What was the current encountered between 0715 and 0745? 

    N a. Set 030°T, drift 0.4 knot
    N b. Set 216°T, drift 0.3 knot
    Y c. Set 070°T, drift 0.6 knot
    N d. Set 238°T, drift 1.0 knot
16245: At 2259 Cape Henry Light bears 250°T, Chesapeake Light bears 122°T, and North Chesapeake Entrance Lighted Whistle Buoy "NCA" has a radar range of 1.8 miles. Which statement is TRUE? 

    N a. The course made good is 226°T.
    N b. You are in the red sector of Cape Henry Light.
    N c. You are in a submerged submarine transit lane.
    Y d. Chesapeake Light is 7.6 miles off.
16345: Where will you cross the demarcation line between the International and Inland Rules of the Road? 

    N a. Between Montauk Point and Block Island
    Y b. In the Race
    N c. At the mouth of Bridgeport Harbor
    N d. Between Plum Gut and Niantic Bay
16514: At 0815, Montauk Pt. Light House is bearing 167°T,
Shagwong Pt. has a radar range of 4.5 miles, and Cerberus Shoal "9" Buoy is bearing 284°T. If the engine is making turns for 10 knots, what was the set and drift of the current since 0748? 

    N a. Set 065°T, drift 1.1 knots
    N b. Set 065°T, drift 2.4 knots
    N c. Set 245°T, drift 1.1 knots
    Y d. Set 245°T, drift 2.4 knots
16838: At 0800 you obtain the following Loran-C readings:

9960-X-27101
9960-Y-41612
9960-Z-58737

What is your vessel's position? 

    N a. LAT 37°20.9'N, LONG 75°29.5'W
    Y b. LAT 37°21.0'N, LONG 75°32.0'W
    N c. LAT 37°19.8'N, LONG 75°30.6'W
    N d. LAT 37°20.8'N, LONG 75°31.2'W