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.

84: What is the distance from the Amoco Docks at Baton Rouge, LA, to the mouth of the Ohio River?
140: If the highest point on your towboat is 52 feet and the West Memphis Gage reads 26 feet what is the vertical clearance when you pass under the Hernando Desoto Bridge (mile 736.6 AHP)?
154: You see a buoy with red and green bands. This buoy marks __________.
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
199: 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
    Y b. LAT 41°05.3'N, LONG 71°35.8'W
    N c. LAT 41°05.3'N, LONG 71°35.1'W
    N d. LAT 41°05.4'N, LONG 71°35.0'W
207: If your height of eye is 35 feet (10.7 meters), what is the approximate geographic range of Block Island North Light? 

    N a. 7.4 nm
    N b. 13.0 nm
    Y c. 15.8 nm
    N d. 17.5 nm
286: Your 1900 position is LAT 37°12.9'N, LONG 76°13.5'W. You change course to 317°pgc and slow to 8.0 knots. What is the course per standard magnetic compass? 

    Y a. 329°psc
    N b. 319°psc
    N c. 311°psc
    N d. 309°psc
477: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 12°36.0'N, LONG 128°16.0'E is 8664 miles, and the initial course is 306.6°T. Determine the latitude of the vertex. 

    Y a. 37°30.2'N
    N b. 37°39.6'N
    N c. 37°48.2'N
    N d. 37°53.6'N
637: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis? 

    N a. 48.0 feet
    Y b. 53.2 feet
    N c. 68.2 feet
    N d. 116.0 feet
642: Where can scheduled broadcast times of river stages be found? 

    N a. Sailing Directions
    Y b. Light List
    N c. List of Lights
    N d. Coast Pilot
684: 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? 

    N a. 9.7 mph
    Y b. 8.7 mph
    N c. 6.3 mph
    N d. 5.6 mph
836: On 16 June , in DR position LAT 50°57.0'S, LONG 53°03.9'W (ZD+4), you take an ex-meridian observation of Acrux at lower transit. The chronometer time of the sight is 10h 08m 18s, and the chronometer error is 02m 12s fast. The sextant altitude (hs) is 23°49.0'. The index error is 1.1' off the arc, and your height of eye is 26 feet. What is the latitude at meridian transit? 

    Y a. 50°41.2'S
    N b. 51°02.2'S
    N c. 51°33.0'S
    N d. 51°41.2'S
1008: On 27 March , your 0730 zone time position is LAT 28°16'N, LONG 56°37'W. Your vessel is on course 158°T at a speed of 15.0 knots. An observation of the Sun's lower limb is made at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer error is 00m 53s slow. The observed altitude (Ho) is 45°10.7'. LAN occurs at 1150 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) is 65°32.8'. Determine the vessel's 1200 zone time position. 

    Y a. LAT 27°08.8'N, LONG 56°04.2'W
    N b. LAT 27°08.8'N, LONG 56°10.3'W
    N c. LAT 27°11.6'N, LONG 56°04.2'W
    N d. LAT 27°11.6'N, LONG 56°10.3'W
1132: Which light will you be passing at 0059, on 22 September, if you make good 9.2 knots? 

    Y a. Obion Bar Lt.
    N b. Kate Aubrey Lt.
    N c. Trotter Lt.
    N d. Quaker Oats Lt.
1179: On 26 September , your 0830 zone time DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is on course 119°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)? 

    Y a. 1124
    N b. 1127
    N c. 1130
    N d. 1133
1700: As you approach French Point Light (mile 915.4 AHP), you see 2 daymarks on the structure. What significance do the daymarks have? 

    N a. They indicate the starboard side of the channel from seaward and mid-channel fairway.
    Y b. They indicate the starboard side of the channel from seaward and a channel crossing.
    N c. They indicate the port side of the channel from seaward and a range marking.
    N d. They indicate the port side of the channel and a channel crossing.
1780: At 1523 ZT, on 14 June , in DR position LAT 31°58'S, LONG 48°42'W you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 118.0°psc. The variation is 10°W. What is the deviation? 

    N a. 2.5°W
    Y b. 2.1°W
    N c. 1.7°W
    N d. 1.7°E
1837: The Arkansas City Yellow Bend revetment on the LMR extends from mile _________. 

    Y a. 555.0-549.7 RDB
    N b. 549.0-548.5 RDB
    N c. 556.9-554.9 LDB
    N d. 548.5-546.5 LDB
1887: On 8 April , your evening DR position is LAT 22°16.0'N, LONG 157°58.3'W. You observe an unidentified star bearing 271°T at an observed altitude (Ho) of 44°08.2'. The chronometer reads 05h 09m 57s, and is 01m 23s slow. What star did you observe? 

    N a. Betelgeuse
    Y b. Aldebaran
    N c. Alnilam
    N d. Bellatrix
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
2163: On 1 April , at 0515 zone time, morning stars were observed, and the vessel's position was determined to be LAT 27°05.0'N, LONG 16°30.0'W. Your vessel is steaming at 19.0 knots on a course of 022°T. A sextant observation of the Sun's lower limb is made at 0930 zone time. The chronometer reads 10h 28m 25s, and the sextant altitude is 46°20.3'. The index error is 4.5' off the arc, and the chronometer error is 02m 15s slow. Your height of eye on the bridge is 57.0 feet. What is the azimuth (Zn) of this sight using the assumed position? 

    N a. 121.6°T
    N b. 117.9°T
    Y c. 115.0°T
    N d. 112.2°T
2703: You are underway on course 254°T at a speed of 16.5 knots. You sight a rock bearing 255°T at a radar range of 6.1 miles at 0916. If you change course at 0922, what is the course to steer to leave the rock abeam to starboard at 1.5 miles? 

    N a. 268°T
    N b. 239°T
    Y c. 236°T
    N d. 233°T
2861: Your vessel is on a course of 196°T at 17 knots. At 0417 a light bears 218.5°T, and at 0442 the light bears 241°T. At what time and at what distance off will your vessel be when abeam of the light? 

    Y a. 0500, 5.0 miles
    N b. 0504, 6.2 miles
    N c. 0500, 6.2 miles
    N d. 0504, 5.0 miles
2865: You are steering a course of 240°T, and a lighthouse bears 025° on the starboard bow at 2116. At 2144 the same lighthouse bears 050° on the starboard bow, and you have run 6 miles since the first bearing. What is the ETA when the lighthouse is abeam? 

    N a. 2156
    N b. 2159
    Y c. 2202
    N d. 2205
3070: If the speed necessary for reaching port at a designated time is 19.6 knots and the pitch of the propeller is 24.6 feet, how many revolutions per minute will the shaft have to turn, assuming a 5% positive slip? 

    N a. 76
    Y b. 85
    N c. 97
    N d. 106
3089: If the pitch of the propeller is 22.4 feet, and the revolutions per day are 103,690, calculate the day's run allowing 9% positive slip. 

    N a. 321.7 miles
    Y b. 347.6 miles
    N c. 382.0 miles
    N d. 416.4 miles
3253: You have steamed 925 miles at 13.5 knots, and consumed 181 tons of fuel. If you have 259 tons of usable fuel remaining, how far can you steam at 16 knots? 

    N a. 795 miles
    Y b. 942 miles
    N c. 1117 miles
    N d. 1409 miles
3257: You have steamed 824 miles at 15.5 knots, and consumed 179 tons of fuel. If you have 221 tons of usable fuel remaining, how far can you steam at 18 knots? 

    N a. 495 miles
    N b. 650 miles
    Y c. 754 miles
    N d. 876 miles
3292: Your vessel consumes 215 barrels of fuel per day at a speed of 18.0 knots. What will be the fuel consumption of your vessel at 14.0 knots? 

    N a. 67 bbls
    Y b. 101 bbls
    N c. 130 bbls
    N d. 167 bbls
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
10208: Your GPS position is LAT 41°08.5'N, LONG 72°28.8'W. What course must you steer per standard magnetic compass (psc) to leave Cornfield Lighted Whistle Buoy "CF" 0.5 mile abeam to starboard? 

    N a. 032°psc
    N b. 048°psc
    N c. 055°psc
    Y d. 067°psc
11009: What best describes the structure from which Stratford Point Light is shown? 

    N a. Brown conical tower with white horizontal band in center of light on black pier
    N b. Red conical tower on brown cylindrical pier
    N c. White octagonal house on brown cylindrical pier
    Y d. White conical tower, with brown band midway of height
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
13010: Your 0620 position is LAT 40°59.5'N, LONG 73°00.5'W. You are making turns for 8 knots. What is your ETA at LAT 41°08.0'N, LONG 72°44.8'W? 

    N a. 0748
    N b. 0802
    Y c. 0809
    N d. 0814
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.
13906: When approaching Block Island Sound from Long Island Sound, you will enter waters governed by the International Rules of the Road when you __________. 

    Y a. pass through The Race
    N b. cross the territorial sea boundary
    N c. exit Block Island Sound to the east or south
    N d. None of the above, as Long Island Sound is governed by the  International Rules of the Road
14205: You are off the coast of Mexico and are taking a time tick for 1600. At approximately 1554, you hear the preparatory signal "VVVV de XDD" from the time signal station. Then you hear a series of 1 second dashes followed by a 9 second silent period and then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 03h 59m 56s. When compared to the chronometer, the comparing watch reads 04h 01m 22s, and the chronometer reads 04h 02m 11s. What is the chronometer error? 

    N a. 0m 04s slow
    N b. 2m 15s slow
    Y c. 0m 45s fast
    N d. 1m 26s fast
15019: At 2215, Cape Henry Light bears 242°pgc, Cape Charles Light bears 010.5°pgc, and Chesapeake Channel Tunnel North Light bears 319°pgc. You are heading 271°pgc. What is the relative bearing of Thimble Shoal Light? 

    N a. 280°
    N b. 332°
    Y c. 014°
    N d. 017°
15359: Based on your running fix, you __________. 

    N a. have a head current
    Y b. have a following current
    N c. are being set to the north
    N d. are not affected by a current
15461: At 0908, you change course to 010°T. What course should you steer per standard magnetic compass? 

    N a. 003°
    N b. 017°
    Y c. 021°
    N d. 359°
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
16015: By 0430, the wind has increased, and the visibility cleared due to passage of a front. You estimate 3° leeway due to NW'ly winds. What is the course per gyrocompass to pass 1.2 miles due south of Twenty-eight Foot Shoal Lighted Buoy "TE"? 

    Y a. 080°
    N b. 083°
    N c. 086°
    N d. 090°
16269: On either side of York River Entrance Channel, there are areas bounded by short - long magenta lines and marked by yellow buoys. These areas are __________. 

    Y a. fish trap areas
    N b. designated anchorages
    N c. spoil areas
    N d. naval exercise areas
16362: The visibility is about 5 miles. Which statement about Cape Charles Light is TRUE? 

    N a. The light has been visible from the time you departed the anchorage.
    Y b. You should see Cape Charles Light at about 0400.
    N c. The light will become visible when you enter the inbound leg of the traffic separation scheme.
    N d. The light will not be visible until you are within 5 miles of the light.