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.

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)?
175: At 2118, you obtain the following bearings:

Cape Henry Light - 148°pgc
Cape Charles Light - 033°pgc
Thimble Shoal Light - 291°pgc

From this 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 speed to make good from your 2118 position to arrive at this time?
334: Your gyro and electronic gear are again operating. At 1710, Chesapeake Light bears 137°pgc at 6.6 miles. The current is setting 160°T at 2 knots. At your speed of 6 knots, what is your true course to steer to remain in the inbound traffic lane?
387: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"? 

    Y a. 087°pgc
    N b. 085°pgc
    N c. 081°pgc
    N d. 079°pgc
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
488: At 0705, with your gyro again functioning properly, you change course to 096°T. At this time Race Rock Light is bearing 000°T at 0.35 mile. You are now governed by which Navigation Rules? 

    Y a. International Rules
    N b. Local Pilot Rules
    N c. Inland Rules
    N d. Coastal Fishery Rules
533: You depart LAT 38°14'N, LONG 12°42'W, for LAT 38°14'N, LONG 46°09'W. What are the course and distance by parallel sailing? 

    N a. 090°T, 1576.5 miles
    N b. 090°T, 2879.0 miles
    Y c. 270°T, 1576.5 miles
    N d. 270°T, 2868.5 miles
575: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"? 

    N a. 341°
    Y b. 339°
    N c. 322°
    N d. 319°
575: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"? 

    N a. 341°
    Y b. 339°
    N c. 322°
    N d. 319°
680: On which voyage would a great circle track provide a significant savings in distance to steam, when compared to a rhumb line track? (Use gnomonic tracking chart WOXZC 5270.) 

    N a. Valdez, AK, to the Marquesas Islands (LAT 8°00'S, LONG 140°00'W)
    N b. San Francisco to Kodiak, AK
    N c. Christmas Island (LAT 2°00'N, LONG 157°30'W) to Singapore via LAT 3°00'N, LONG 126°00'E
    Y d. Guam (LAT 14°00'N, LONG 145°00'E) to Seattle via LAT 47°30'N, LONG 125°30'W
736: On 6 March , your 1854 zone time DR position is LAT 23°51.5'N, LONG 73°14.0'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 11h 52m 40s, and the chronometer error is 01m 56s slow. The index error is 5.0' on the arc, and the height of eye is 43.5 feet (13.3 meters.) What is your latitude by Polaris? 

    N a. 23°29.5'N
    Y b. 23°36.3'N
    N c. 23°49.9'N
    N d. 24°02.9'N
741: On 16 February , your 1845 ZT DR position is LAT 25°50.5'N, LONG 46°24.0'W. At that time you observe Polaris with a sextant altitude (hs) of 26°25.5'. The chronometer time of the sight is 09h 47m 30s and the chronometer error is 02m 16s fast. The index error is 2.5' off the arc, and the height of eye is 55.0 feet. What is your latitude by Polaris? 

    Y a. 25°38.0'N
    N b. 25°44.2'N
    N c. 26°00.1'N
    N d. 26°37.5'N
844: On 12 September , your 0600 zone time (ZT) fix gives you a position of LAT 22°51.9'N, LONG 133°40.1'W. Your vessel is on course 062°T, and your speed is 12.3 knots. Local apparent noon (LAN) occurs at 1142 ZT, at which time a meridian altitude of the Sun's upper limb is observed. The observed altitude (Ho) for this sight is 70°33.2'. What is the calculated latitude at LAN? 

    N a. 23°23.0'N
    Y b. 23°24.8'N
    N c. 23°26.5'N
    N d. 23°27.9'N
980: On 29 April , your 0530 zone time position was LAT 23°04.0'S, LONG 162°12.0'E. Your vessel was steaming on course 120°T at a speed of 9.0 knots. An observation of the Sun's upper limb was made at 0830 ZT. The chronometer read 09h 27m 32s and was slow 02m 24s. The observed altitude (Ho) was 24°58.0'. LAN occurred at 1205 zone time. The observed altitude (Ho) was 52°04.0'. What was the longitude of your 1200 zone time running fix? 

    N a. LONG 163°02.1'E
    Y b. LONG 163°06.0'E
    N c. LONG 163°09.5'E
    N d. LONG 163°11.3'E
986: At 0900 zone time, on 23 September , your DR position is LAT 28°48.0'N, LONG 153°11.5'W. You are steering course 257°T at a speed of 18.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1020 running fix? NP-0001

    N a. 28°43.3'N, 153°32.1'W
    N b. 28°46.4'N, 153°34.6'W
    Y c. 28°49.1'N, 153°37.0'W
    N d. 28°52.8'N, 153°30.6'W
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
1500: On September 9 , your 2130 zone time (ZD +5) DR position is LAT 45°08'N, LONG 82°38'W. At that time, you observe Polaris bearing 000.5°pgc. The chronometer time of the observation is 02h 26m 09s, and the chronometer is 1m 43s slow. The variation is 8.7°W. What is the gyro error? 

    Y a. 0.7°E
    N b. 1.2°E
    N c. 0.8°W
    N d. 9.4°W
1667: On Sunday, 8 November, your ship is enroute from Texas City, TX, to Portland, ME. At 0632 ZT, you fix your position at LAT 27°06'N, LONG 90°36'W. When the lower limb of the Sun was two-thirds of a diameter above the visible horizon, the Sun bore 105° per standard magnetic compass. At this time the chronometer read 12h 39m 20s and is 3m 20s slow. If the variation is 3°E, determine the deviation of the standard compass. 

    Y a. 0.8°E
    N b. 0.8°W
    N c. 3.8°E
    N d. 3.8°W
1774: You pass New Madrid, MO (mile 889.0 AHP) at 1412. What was your average speed since leaving Cairo? 

    Y a. 8.0 mph
    N b. 7.8 mph
    N c. 7.6 mph
    N d. 7.3 mph
1801: What is the distance from the Amoco Docks at Baton Rouge, LA, to the new mouth of the White River? 

    N a. 981.5 miles
    N b. 953.5 miles
    Y c. 345.3 miles
    N d. 700.2 miles
2115: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________. 

    N a. composed of high rocky bluffs
    N b. a high, flat plateau with sheer cliffs
    Y c. fringed by rocky shoals
    N d. low and marshy with isolated beaches
2371: 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. None of the above.
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
2875: Your vessel is on a course of 316°T at 12 knots. At 2326 a light bears 289.5°T, and at 2354 the light bears 271°T. At what time and at what distance off will your vessel be when abeam of the light? 

    N a. 0014, 4.8 miles
    N b. 0018, 5.2 miles
    Y c. 0022, 5.6 miles
    N d. 0026, 6.4 miles
3280: While steaming at 14.5 knots, your vessel consumes 319 barrels of fuel oil per day. In order to reduce consumption to 217 barrels of fuel oil per day, what is the maximum speed the vessel can turn for? 

    N a. 9.8 knots
    N b. 11.9 knots
    Y c. 12.8 knots
    N d. 13.5 knots
3288: While steaming at 13.5 knots, your vessel consumes 251 barrels of fuel oil per day. In order to reduce consumption to 129 barrels of fuel oil per day, what is the maximum speed the vessel can turn for? 

    N a. 6.9 knots
    N b. 9.7 knots
    Y c. 10.8 knots
    N d. 12.7 knots
3288: While steaming at 13.5 knots, your vessel consumes 251 barrels of fuel oil per day. In order to reduce consumption to 129 barrels of fuel oil per day, what is the maximum speed the vessel can turn for? 

    N a. 6.9 knots
    N b. 9.7 knots
    Y c. 10.8 knots
    N d. 12.7 knots
3471: You are underway on course 172°T at 18.5 knots. The current is 078°T at 2.8 knots. What is the speed being made good? 

    Y a. 18.5 knots
    N b. 19.0 knots
    N c. 19.5 knots
    N d. 20.0 knots
3602: You are heading 328°pgc to make good a course of 332°T, allowing 3° leeway for westerly winds and 1°E gyro error. The variation is 17°E. What should your heading be by standard magnetic compass to make good 332°T.
DEVIATION TABLE
MAGNETIC HEADING DEV.
345° 1°E
330° 1°W
315° 3°W 

    Y a. 315°psc
    N b. 318°psc
    N c. 343°psc
    N d. 345°psc
3624: Your vessel is steering course 073°psc, variation for the area is 15°E, and deviation is 4°E. The wind is from the southeast, producing a 4° leeway. Which true course are you making good? 

    N a. 050°T
    N b. 058°T
    Y c. 088°T
    N d. 096°T
3652: The true course between two points is 023°T. Your gyrocompass has an error of 1°W and you make an allowance of 4° leeway for an east wind. What gyro course should be steered to make the true course good? 

    N a. 020°pgc
    N b. 021°pgc
    N c. 026°pgc
    Y d. 028°pgc
4008: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading of 037°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320° 

    Y a. 1.0°W
    N b. 1.5°W
    N c. 1.5°E
    N d. 2.0°E
10301: Determine the course per standard magnetic compass from Cerberus Shoal Buoy 9 (LAT 41°10.4'N, LONG 71°57.1'W) to the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W). 

    N a. 030°psc
    N b. 036°psc
    Y c. 059°psc
    N d. 067°psc
10610: At 1645 your GPS position is LAT 41°04.9' N, LONG 72°42.1'W. You are on course 072° per standard magnetic compass at a speed of 14 knots. At 1727 another GPS fix places your vessel 1 mile due north of Twenty-Eight Foot Shoal Lighted Buoy TE. What were your set and drift? 

    N a. 032°T at 1.2 knot
    Y b. 026°T at 1.1 knot
    N c. 207°T at 0.9 knot
    N d. 212°T at 1.2 knots
11309: At 1919 your position is LAT 37°00.5'N, LONG 75°43.8'W. At 2019 your position is LAT 37°00.0'N, LONG 75°30.0'W. What is the course made good? 

    N a. 090°T
    Y b. 093°T
    N c. 096°T
    N d. 099°T
11900: What is the true course to steer between the entrance to Great Salt Pond (LAT 41°12.0'N, LONG 71°35.6'W) and the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W), if you are turning for 8.5 knots, and you allow for a current of 247°T at 1.2 knots, and an easterly wind is causing 2° of leeway? 

    N a. 314°T
    N b. 320°T
    N c. 328°T
    Y d. 333°T
13307: The soundings on the chart are based on the depth of water available at __________. 

    N a. mean low water
    Y b. mean lower low water
    N c. mean high water
    N d. mean high water springs
13404: Your vessel has become disabled and is dead in the water. Your GPS position is LAT 41°12.1'N, LONG 72°43.5'W. You decide to anchor at this position. Under normal conditions, how much anchor chain should you expect to put out? 

    N a. 80 to 190 feet
    N b. 190 to 240 feet
    Y c. 245 to 343 feet
    N d. 345 to 420 feet
14200: What is the length of the city wharf at The Dalles on the Columbia River? 

    N a. 20 feet
    Y b. over 1000 feet
    N c. 800 feet
    N d. 600 feet
14301: What are the characteristics of Washougal Light on the Columbia River? 

    N a. Equal interval green, 6 seconds
    N b. Quick flashing red, 2 seconds
    N c. Flashing green, 4 seconds
    Y d. Flashing red, 2.5 seconds
15068: Long Sand Shoal __________. 

    N a. shoals gradually on the north and south sides
    Y b. is hard and lumpy
    N c. shows breakers when northerly winds exceed 10 knots
    N d. has gray sand with scattered shells
15163: Which statement concerning your 1920 position is TRUE? 

    Y a. You are entering a restricted area.
    N b. You are governed by the Inland Rules of the Road.
    N c. You are within the Chesapeake Bay Entrance traffic separation scheme.
    N d. On your present course Trestle "C" of the Chesapeake Bay Bridge - Tunnel is dead ahead.
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
15538: At 2127 you take the following round of bearings:

Old Field Point Light 224.0°pgc
Middle Ground Light 320.5°pgc
Stratford Point Light 348.0°pgc

Based on the above fix, which statement is TRUE? 

    Y a. At 2127, your fathometer reads about 17 fathoms.
    N b. You are south of Mt. Misery Shoal.
    N c. You will experience a 1 knot westward setting ebb current
    N d. You have lost sight of the red light at Old Field Point.
15560: In clear weather, you will lose sight of Point Judith Light at what distance? (use charted range of 20 miles as nominal range) 

    Y a. 14.0 nm
    N b. 12.6 nm
    N c. 10.3 nm
    N d. 9.2 nm
15607: If there is no current, what is the course per gyro compass from your 1600 position to point A located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"? 

    N a. 190°pgc
    Y b. 193°pgc
    N c. 196°pgc
    N d. 199°pgc
16207: If you change course at 0610, what is the course to steer to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")? 

    N a. 072°pgc
    N b. 076°pgc
    Y c. 080°pgc
    N d. 084°pgc
16565: You decide to use the 9960-Y and 9960-W rates. At 1915,
you obtain the following readings:

9960-Y-43937.5
9960-W-14651.2

What is your 1915 position? 

    N a. LAT 41°13.6'N, LONG 71°54.0'W
    Y b. LAT 41°13.5'N, LONG 71°53.4'W
    N c. LAT 41°13.4'N, LONG 71°53.1'W
    N d. LAT 41°14.4'N, LONG 71°53.7'W