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.

116: At which of the following times would you be able to listen to lower Mississippi River conditions on VHF Channel 22?
171: 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?
239: What do the dotted lines around Goose Island and Kimberly Reef represent?
306: A vessel steams 640 miles on course 047°T from LAT 34°45'N, LONG 140°00'E. What are the latitude and longitude of the point of arrival by mid-latitude sailing? 

    N a. LAT 41°57'N, LONG 150°02'E
    Y b. LAT 42°01'N, LONG 149°57'E
    N c. LAT 42°06'N, LONG 149°53'E
    N d. LAT 42°09'N, LONG 149°50'E
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
535: You depart LAT 49°38'N, LONG 152°49'E, for LAT 49°38'N, LONG 176°12'E. What are the course and distance by parallel sailing? 

    Y a. 090°T, 909 miles
    N b. 090°T, 1204 miles
    N c. 270°T, 909 miles
    N d. 270°T, 1204 miles
554: Based on your running fix, you __________. 

    Y a. have a following current
    N b. have a head current
    N c. are being set to the north
    N d. are not affected by a current
627: You are on a voyage from Halifax, Nova Scotia, to Galveston, TX. The distance is 2138 miles, and the speed of advance is 12.5 knots. You estimate 18.0 hours for bunkering enroute at Port Everglades, FL. If you sail at 0648 hours (ZD +4), 12 June, what is your ETA (ZD +5) at Galveston? 

    Y a. 0250, 20 June
    N b. 0350, 20 June
    N c. 0550, 20 June
    N d. 1350, 20 June
659: You are planning a voyage from LAT 48°30'N, LONG 125°00'W to Korea via LAT 48°30'N, LONG 153°00'E. Which of the following track lines would you select for the safest and most direct route? (Use gnomonic tracking chart WOXZC 5270) 

    N a. Parallel sailing along 48°30'N
    N b. Great circle track line between the two points
    Y c. Great circle to LAT 51°00'N, LONG 178°00'W, parallel sailing for 80 miles, then great circle to the via point
    N d. Rhumb line track between the two points
1003: On 15 November , your 1030 ZT DR position is LAT 17°25'S, LONG 42°12'W. You are on course 059°T, speed 22 knots. Determine your 1200 position using the following observations of the Sun.

ZONE TIME GHA DECLINATION Ho
1128 40°50.4' S 18°33.6' 88°18.4'
1133 42°05.4' S 18°33.6' 88°37.7' 

    N a. LAT 17°00.0'S, LONG 41°45.8'W
    N b. LAT 17°02.1'S, LONG 41°48.4'W
    Y c. LAT 17°06.8'S, LONG 41°44.3'W
    N d. LAT 17°08.9'S, LONG 41°40.4'W
1278: On 17 April , your vessel is enroute from the Panama Canal to Kobe, Japan. Your 0400 zone time DR position is LAT 26°12.0'N, LONG 126°12.0'W. Your vessel is on course 285°T at a speed of 18 knots. What will be the zone time of sunrise at your vessel? 

    N a. 0535
    N b. 0541
    N c. 0552
    Y d. 0602
1278: On 17 April , your vessel is enroute from the Panama Canal to Kobe, Japan. Your 0400 zone time DR position is LAT 26°12.0'N, LONG 126°12.0'W. Your vessel is on course 285°T at a speed of 18 knots. What will be the zone time of sunrise at your vessel? 

    N a. 0535
    N b. 0541
    N c. 0552
    Y d. 0602
1342: What is the vertical clearance between the highest point of your towboat, if it is 45 feet above the water, and if the Natchez Gage reads 23.4 feet when passing under the Natchez-Vidalia Westbound Highway Bridge? 

    N a. 67.5 feet
    Y b. 57.1 feet
    N c. 52.2 feet
    N d. 45.2 feet
1451: On 11 December , your 1816 ZT DR position is LAT 26°30.0'N, LONG 140°35.0'E. At that time, you observe Venus bearing 230°pgc. The chronometer reads 09h 14m 52s and the chronometer error is 01m 02s slow. The variation is 3.5°E. What is the gyro error? 

    N a. 2.2°E
    Y b. 3.3°E
    N c. 3.2°W
    N d. 4.2°W
1487: On 5 June , your 0420 zone time DR position is LAT 26°47.0'N, LONG 133°19.5'W. At that time, you observe Vega bearing 298.1°psc. The chronometer reads 01h 21m 17s, and the chronometer error is 02m 25s fast. The variation is 3.5°E. What is the deviation of the standard compass? 

    N a. 1.8°E
    N b. 5.2°E
    Y c. 1.8°W
    N d. 5.2°W
1651: On 23 October , in DR position LAT 21°13.0'N, LONG 152°18.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 259°psc. The chronometer reads 07h 21m 46s and is 01m 32s slow. Variation in the area is 5°E. What is the deviation of the magnetic compass? 

    N a. 0.9°E
    N b. 1.5°W
    Y c. 5.9°W
    N d. 6.5°E
1855: On 22 July , your 0442 ZT DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 112°T, at an observed altitude (Ho) of 44°16.0'. The chronometer reads 05h 39m 03s and is 03m 14s slow. What star did you observe? 

    N a. Hamal
    N b. Rigel
    Y c. Menkar
    N d. Acamar
1963: Which of the following statements are TRUE? 

    N a. Oil well structures are listed in the Light List.
    N b. All aids to navigation with lights have lateral significance.
    Y c. On the Western Rivers, crossing marks may exhibit white lights.
    N d. All of the above.
2454: What is the width of the widest span of the Cairo Highway Bridge (Upper Mississippi River mile 1.3)? 

    N a. 800 feet
    Y b. 675 feet
    N c. 625 feet
    N d. 503 feet
2905: You are steaming on a course of 215°T at 14 knots. At 1841 you observe a lighthouse bearing 178°T. At 1904 the same lighthouse bears 156°T. What is your distance off at the second bearing? 

    N a. 5.4 miles
    N b. 6.6 miles
    N c. 7.5 miles
    Y d. 8.7 miles
2908: Your vessel is on a course of 223°T at 17 knots. At 1323 a lighthouse bears 318° relative. At 1341 the same lighthouse bears 287° relative. What is your distance off the lighthouse at 1341? 

    N a. 4.3 miles
    N b. 5.1 miles
    Y c. 6.6 miles
    N d. 7.8 miles
3060: The propeller on a vessel has a diameter of 24.0 feet and a pitch of 21.3 feet. What would be the slip if the vessel cruised 510 miles in a 24 hour day (observed distance) at an average RPM of 86? 

    N a. -12.2%
    N b. +12.2%
    Y c. -17.5%
    N d. +17.5%
3068: Your vessel's propeller has a pitch of 22'06". From 0530, 19 March, to 1930, 20 March, the average RPM was 82. The distance run by observation was 721.5 miles. What was the slip? 

    N a. +4%
    Y b. -4%
    N c. +7%
    N d. -7%
3295: Your vessel consumes 178 barrels of fuel per day at a speed of 13.5 knots. What will be the fuel consumption of your vessel at 15.0 knots? 

    N a. 172 bbls
    N b. 198 bbls
    N c. 219 bbls
    Y d. 244 bbls
3462: You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the course made good? 

    N a. 156°T
    N b. 160°T
    Y c. 164°T
    N d. 169°T
3626: Your vessel is steering course 284°psc, variation for the area is 6°W, and deviation is 3°E. The wind is from the north-northeast, producing a 3° leeway. What true course are you making good? 

    N a. 275°T
    Y b. 278°T
    N c. 284°T
    N d. 290°T
3647: The true course between two points is 220°. Your gyrocompass has an error of 1°E. You make an allowance of 1° leeway for a north-northwest wind. What gyro course should be steered to make the true course good? 

    Y a. 220°pgc
    N b. 221°pgc
    N c. 222°pgc
    N d. 223°pgc
4006: 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 true heading of 236°.
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. 1.0°W
    Y b. 0.5°E
    N c. 1.5°E
    N d. 0.0°
11100: Block Island is __________. 

    N a. surrounded by wide sandy beaches
    N b. a low, marshy island
    Y c. hilly with elevations to 200 feet (60.5 m)
    N d. a national bird sanctuary
13909: The irregular black line around a charted light such as Race Rock Light indicates that it is __________. 

    N a. unwatched
    Y b. surrounded by riprap
    N c. a minor light
    N d. constructed on an artificial island
15028: At what time would you listen to VHF Channel 22 (157.1 MHz) for information concerning the stage of the river between Memphis and Cairo? 

    N a. 1115
    N b. 1235
    Y c. 1300
    N d. 1815
15162: At 1920, Cape Henry Light bears 231°pgc, and Chesapeake Channel Tunnel North Light bears 294°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light? 

    Y a. 213°
    N b. 201°
    N c. 194°
    N d. 179°
15210: What course should you steer per standard magnetic compass in order to navigate down the center of York River Entrance Channel (ignore set and drift)? 

    N a. 139°psc
    Y b. 141°psc
    N c. 147°psc
    N d. 149°psc
15309: The engineer has advised that it will be necessary to secure the gyrocompass and the electronic equipment. From your 0315 position, what is your course per standard magnetic compass to York Spit Channel Buoy "38", if there is no current? 

    N a. 212°psc
    N b. 214°psc
    Y c. 216°psc
    N d. 218°psc
15318: You passed Cape Henry Light at 0730 outbound at maximum flood. What approximate current can you expect on entering Chesapeake Channel? 

    N a. Slack before ebb
    N b. Slack before flood
    N c. Ebb current
    Y d. Flood current
15416: At 2200, you are in position LAT 36°57.5'N, LONG 76°02.5'W. You intend to travel up the Thimble Shoals auxiliary Channel to Hampton Roads. According to the Coast Pilot,
what is the depth of the auxiliary channel on either side of the main channel? 

    N a. 28 feet (8.5 meters)
    Y b. 32 feet (9.8 meters)
    N c. 36 feet (11.0 meters)
    N d. 45 feet (13.7 meters)
15456: On 25 February, your vessel is berthed near Lamberts Point in Norfolk. You are preparing to sail for Baltimore and wish to be transiting York Spit Channel while the morning flood current is at its maximum speed. At what time should you be between buoys "33" and "34"? And, what will be the speed of the flood at this time? 

    N a. 0513, 0.8 k
    Y b. 0810, 1.2 k
    N c. 0810, 1.5 k
    N d. 1124, 1.2 k
15509: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears approximately 040°T from your position at a range of half a mile be painted? 

    Y a. Horizontally banded, green over red, with a green buoyancy chamber
    N b. Horizontally banded, red over green, with a red buoyancy chamber
    N c. Vertically striped, red and green
    N d. Solid green with red letters "BIS"
15518: From your 1930 position, you plot a course to pass 0.5 mile due south of Race Rock Light. If your vessel's speed is 10.0 knots, the current's set and drift are 040°T at 1.8 knots, and a north wind produces a 3° leeway, what true course should you steer to make good your desired course? 

    N a. 275°T
    Y b. 280°T
    N c. 290°T
    N d. 294°T
15642: At 2030 you take the following radar ranges:

Race Rock Light 2.1 miles
Latimer Reef Light 6.4 miles

If you estimate an average current of 080°T at 1.5 knots,
which course will you steer per gyrocompass to leave Endeavor Shoals Gong Buoy bearing 270°T at 1.5 miles? 

    N a. 115°
    N b. 118°
    N c. 124°
    Y d. 127°
15838: At 2000 Hog Island Lighted Bell Buoy "12" bears 199° true and Buoy "GM" bears 249° true

Your position is __________. 

    N a. 37°35.0'N, 75°32.2'W
    Y b. 37°23.5'N, 75°32.2'W
    N c. 37°03.5'N, 75°32.2'W
    N d. 37°03.5'N, 75°02.2'W
15867: You anticipate a maximum flood current north of Stratford Shoal. You will be set in which general direction? 

    N a. Northerly
    N b. Easterly
    N c. Southerly
    Y d. Westerly
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
16042: At 1022 when you complete the evacuation, you get underway on course 098°T and order turns for 14.5 knots. You take the following round of bearings at that time:
Stratford Point Light - 260° per gyrocompass
New Haven Light - 326° per gyrocompass
SW Ledge Light - 358° per gyrocompass

Determine your ETA and distance off when abeam of Falkner Island Light, if there are no set and drift? 

    N a. 1102, 3.0 miles
    Y b. 1108, 3.3 miles
    N c. 1114, 3.1 miles
    N d. 1118, 3.3 miles
16359: If your engines are turning for 6.5 knots and the estimated current is north at 0.5 knot. What is the ETA at point "A"? 

    Y a. 0511
    N b. 0501
    N c. 0450
    N d. 0440
16706: At 0520, you take the following observations:

Point Judith Light 032°pgc
Point Judith Harbor of Refuge
Main Breakwater Center Light 308°pgc

What is the position of your 0520 fix? 

    N a. LAT 41°20.8'N, Long 71°30.3'W
    Y b. LAT 41°20.8'N, Long 71°29.7'W
    N c. LAT 41°20.6'N, Long 71°30.0'W
    N d. LAT 41°20.5'N, Long 71°29.8'W