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.

122: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
264: At 0720, you are in the outer channel between buoy "1" and buoy "2" and change course to pass Townshend Ledge Lighted Bell Buoy "10A" abeam to port at 200 yards. What is your ETA off the buoy?
463: Determine the great circle distance and initial course from LAT 37°47.5'N, LONG 122°27.8'W to LAT 33°51.7'S, LONG 151°12.7'E.
471: The great circle distance from LAT 35°57.2'N, LONG 05°45.7'W to LAT 24°25.3'N, LONG 83°02.6'W is 3966.5 miles and the initial course is 283.7°T. The latitude of the vertex is 38°09.4'N. What is the longitude of the vertex? 

    N a. 28°02.6'W
    Y b. 28°18.2'W
    N c. 28°46.3'W
    N d. 28°54.7'W
473: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 22°36.0'N, LONG 128°16.0'E is 7801 miles and the initial course is 318°45' T. The latitude of the vertex is 49°20.6'N. What is the longitude of the vertex? 

    N a. 156°43'W
    Y b. 162°41'W
    N c. 159°32'W
    N d. 161°18'W
550: You observe the star Antares at a sextant altitude (hs) of 38°18.7' on 28 February . The index error is 2.4' on the arc. The height of eye is 40 feet (12.2 meters). What is the observed altitude (Ho)? 

    N a. 38°07.5'
    Y b. 38°09.0'
    N c. 38°10.5'
    N d. 38°12.5'
638: What is the mile point of the Fulton Gage? 

    Y a. 778 AHP
    N b. 687 AHP
    N c. 632 AHP
    N d. 598 AHP
673: You estimate the current at 2.0 mph. What is the speed over the ground? 

    N a. 3.5 mph
    N b. 4.5 mph
    Y c. 5.5 mph
    N d. 9.5 mph
683: Which type of daymark would you see on the Belle Island Corner Lt. at mile 458.6 AHP? 

    N a. Green - Diamond
    N b. Green - Square
    N c. Red - Triangle
    Y d. Red - Diamond
743: On 7 March , at 1838 ZT, in DR position LAT 34°26.9'N, LONG 58°16.2'W, you observe Polaris for latitude. The sextant altitude (hs) is 35°08.4'. The index error is 2.5' off the arc. The height of eye is 54 feet. What is the latitude at the time of the sight? 

    N a. 34°29.8'N
    Y b. 34°33.4'N
    N c. 34°34.8'N
    N d. 34°36.8'N
743: On 7 March , at 1838 ZT, in DR position LAT 34°26.9'N, LONG 58°16.2'W, you observe Polaris for latitude. The sextant altitude (hs) is 35°08.4'. The index error is 2.5' off the arc. The height of eye is 54 feet. What is the latitude at the time of the sight? 

    N a. 34°29.8'N
    Y b. 34°33.4'N
    N c. 34°34.8'N
    N d. 34°36.8'N
807: On 12 February your 0542 zone time (ZT) fix gives you a position of LAT 26°42.0'N, LONG 60°18.0'W. Your vessel is on course 300°T, and your speed is 9.8 knots. Local apparent noon (LAN) occurs at 1220 ZT at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 49°10.0'. What is the calculated latitude at LAN? 

    N a. 27°13.5'N
    Y b. 27°16.3'N
    N c. 27°17.6'N
    N d. 27°19.2'N
847: On 17 December , your 0600 ZT fix gives you a position of LAT 27°16.7'N, LONG 138°39.2'W. Your vessel is on course 137°T, and your speed is 14.8 knots. Local apparent noon (LAN) occurs at 1207 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 40°22.1'. What is the calculated latitude at LAN? 

    N a. 26°09.9'N
    N b. 26°11.6'N
    N c. 26°13.0'N
    Y d. 26°15.4'N
1082: On 20 Nov. , your 1030 ZT DR position is LAT 27°16.0'N, LONG 157°18.6'E. You are on course 060°T at a speed of 20 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1200 running fix. NP-0012

    N a. LAT 27°16.8'N, LONG 157°30.5'E
    N b. LAT 27°22.6'N, LONG 157°37.8'E
    Y c. LAT 27°29.7'N, LONG 157°43.0'E
    N d. LAT 27°33.4'N, LONG 157°48.2'E
1143: Which town is located at mile 663.5 AHP? 

    N a. Friers Point
    Y b. Helena
    N c. St. Francis
    N d. Rodney
1146: The Linwood Bend revetment on the LMR extends from mile __________. 

    N a. 828.1-823.1 RDB
    N b. 831.7-829.4 RDB
    N c. 845.4-842.5 LDB
    Y d. 841.3-838.7 LDB
1257: On 5 May , your 1300 ZT DR position is LAT 25°16.0'S, LONG 12°30.0'W. You are on course 012°T at a speed of 14 knots. What will be the zone time of sunset at your vessel? 

    N a. 1702
    Y b. 1719
    N c. 1730
    N d. 1741
1275: At 1730 zone time, on 3 March , your DR position is LAT 16°00'S, LONG 80°00'W. You are steering 000°T at a speed of 7.5 knots. What is the zone time of sunset? 

    N a. 1829
    N b. 1834
    Y c. 1843
    N d. 1852
1674: On 4 July , your vessel's 1722 zone time DR position is LAT 34°30'S, LONG 174°48'E, when an amplitude of the Sun is observed. The sun's center is on the visible horizon and bears 282° per standard magnetic compass. Variation in the area is 17.2°E. The chronometer reads 05h 21m 48s and is 02m 01s fast. What is the deviation of the compass? 

    Y a. 1.5°W
    N b. 2.0°W
    N c. 1.5°E
    N d. 2.0°E
1730: What is the distance from Arkansas City, AR, to St. Louis, MO, on the Mississippi River System? 

    Y a. 584 miles
    N b. 617 miles
    N c. 733 miles
    N d. 832 miles
1736: What are the color and shape of Joseph Henry Daymark at mile 445.2 AHP? 

    N a. Red - Triangle
    N b. Green - Square
    N c. Green - Triangle
    Y d. Red - Diaomond
1743: You are in charge of a vessel that damages an aid to navigation established and maintained by the United States.
Which statement is TRUE? 

    N a. You must take the aid in tow and deliver it to the nearest Coast Guard, Marine Safety Office.
    N b. You must report the allision to the nearest Corps.. of Engineers Office.
    Y c. You must report the accident to the nearest Officer in Charge, Marine Inspection.
    N d. You may wait until you reach your destination before reporting the allision to the U.S. Coast Guard.
1761: What is the length of the trip? 

    Y a. 887.9 miles
    N b. 878.9 miles
    N c. 851.9 miles
    N d. 726.0 miles
2031: After passing Wilkinson Lt. (mile 310.0 AHP) you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________. 

    N a. stay in the deepest water
    N b. slow down due to dredging operations
    N c. keep as close to the right descending bank as safety permits
    Y d. keep as close to the left descending bank as safety permits
2124: If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light? 

    Y a. 15 miles
    N b. 12 miles
    N c. 10 miles
    N d. 08 miles
2170: On 22 July , at 0720 ZT, in DR position LAT 20°38.2'N, LONG 87°16.0'W, you observe the Moon's lower limb. The sextant altitude (hs) is 38°32.6, and the chronometer reads 01h 18m 14s. The chronometer is 01m 28s slow. The index error is 3.1' off the arc, and the height of eye is 68 feet. What is the azimuth (Zn) and intercept (a) of this sight from the assumed position? 

    N a. Zn 291.4°,  a  5.2' A
    N b. Zn 111.4°,  a  8.7' A
    Y c. Zn 248.6°,  a  5.0' T
    N d. Zn 068.6°,  a  6.5' T
2368: At 2100, January 12, you are passing Cherokee Landing Lt. (mile 112.5 UMR). What has been your speed over the ground since leaving St. Louis, MO (mile 181 UMR). 

    N a. 10.4 mph
    Y b. 9.8 mph
    N c. 9.2 mph
    N d. 8.8 mph
2584: At 1930 you obtain two radar ranges: Hammonasset Point at 4.1 miles and the East side of Falkner Island at 7.6 miles. What is your position? 

    N a. LAT 41°11.2'N,  LONG 072°30.6'W
    Y b. LAT 41°11.7'N,  LONG 072°29.2'W
    N c. LAT 41°11.8'N,  LONG 072°29.6'W
    N d. LAT 41°11.9'N,  LONG 072°29.2'W
2665: You are on course 079°T, speed 11.2 knots. At 0904 you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam? 

    N a. 0918
    N b. 0923
    Y c. 0928
    N d. 0935
2691: While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of the light leaving it to starboard? 

    Y a. 159°T
    N b. 163°T
    N c. 167°T
    N d. 171°T
2693: While on a course of 279°T, a light bears 12° on the starboard bow at a distance of 9.3 miles. What course should you steer to pass 4 miles abeam of the light leaving it to starboard? 

    N a. 253°T
    Y b. 265°T
    N c. 291°T
    N d. 305°T
2782: What is your ETA at the Helena Highway Bridge? 

    Y a. 1335, 24 Sept
    N b. 1109, 24 Sept
    N c. 0926, 24 Sept
    N d. 0458, 24 Sept
2883: Your vessel is steering 157°T at 18 knots. At 2018 a light bears 208°T. At 2044 the same light bears 232°T. What will be your distance off when abeam? 

    N a. 12.8 miles
    Y b. 14.4 miles
    N c. 15.2 miles
    N d. 16.7 miles
3251: You have steamed 916 miles at 13 knots, and consumed 166 tons of fuel. If you have 203 tons of usable fuel remaining, how far can you steam at 14 knots? 

    N a. 757 miles
    N b. 841 miles
    Y c. 966 miles
    N d. 1108 miles
3625: Your vessel is steering course 111°psc, variation for the area is 5°E, and deviation is 3°W. The wind is from the northwest, producing a 1° leeway. What true course are you making good? 

    N a. 108°T
    N b. 110°T
    N c. 112°T
    Y d. 114°T
3771: Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyro compass. The variation in the area is 4°E. What is the error of your gyro compass? 

    Y a. 1.5°W
    N b. 2.5°W
    N c. 5.5°W
    N d. 2.5°E
10308: You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to a position 1.5 miles due east of Watch Hill Point Light? 

    N a. 341°psc
    N b. 337°psc
    N c. 011°psc
    Y d. 007°psc
10903: What is the distance from Norfolk to Philadelphia for a deep draft vessel via the Chesapeake Bay and C and D Canal ? 

    N a. 209 miles
    Y b. 245 miles
    N c. 286 miles
    N d. 302 miles
10908: What is the velocity of the first maximum flood current in Lynnhaven Roads on 23 July 1983? 

    Y a. 0.4 knot
    N b. 0.5 knot
    N c. 0.8 knot
    N d. 1.3 knots
14204: The mooring float at Beacon Rock State Park is restricted to pleasure boats and to periods not to exceed __________. 

    N a. 12 hours
    N b. 24 hours
    Y c. 36 hours
    N d. 48 hours
15015: At 2100, Cape Charles Light bears 321°pgc, and Cape Henry Light bears 247°pgc. Your latitude is __________. 

    N a. 37°00.0'N
    N b. 36°59.7'N
    Y c. 36°59.4'N
    N d. 36°59.1'N
15206: At 1730, your position is LAT 37°13.9'N, LONG 76°26.4'W. You are steering course 088° per standard magnetic compass (psc) at an engine speed of 8.0 knots. What is your distance off Tue Marshes Light at 1730? 

    Y a. 2.6 miles
    N b. 2.8 miles
    N c. 3.0 miles
    N d. 3.2 miles
15220: If the Old Point Comfort main light was inoperative what emergency light would be shown? 

    N a. Flashing yellow
    N b. Alternating red and white
    Y c. Light of reduced intensity
    N d. Strobe light
15238: At 0930 you obtain a position from the following information: Race Rock Light bears 110°T at a range of 1.4 miles, and Goshen Point bears 330°T at a range of 3.3 miles. What are your present latitude and longitude? 

    N a. 41°16.0'N, 72°09.5'W
    Y b. 41°15.1'N, 72°04.6'W
    N c. 41°17.4'N, 72°06.0'W
    N d. 41°14.6'N, 72°03.0'W
15743: At 2155 Montauk Point Light bears 249°T, Watch Hill Point Light bears 335°T, and Block Island North Light bears 045°
T. At this time, you wish to change course to 288°T. The current has a set of 355°T and a drift of 2.0 knots. If your vessel is turning RPM's for 9 knots, what course must you steer in order to make your desired course good? 

    Y a. 276°T
    N b. 280°T
    N c. 284°T
    N d. 288°T
15822: You are turning for 10 mph, approaching Angola, LA. Angola reports that the current at Red River Landing is estimated at 4.5 MPH. Which of the following statements is TRUE? 

    N a. You are making 14.5 mph over the ground.
    Y b. You should expect to encounter vessels crossing the river at mile 300.5 AHP.
    N c. You would expect to find a more favorable current near the broken red line in the river.
    N d. Hog Pt. Light and Hog Pt. Lower Light may be used as range lights when entering Shreves cut-off.
15963: At 1845, you obtain the following Radar Ranges:

Old Plantation Flats Light @ 7.45nm
New Point Comfort Light @ 7.35nm

Your latitude is __________. 

    N a. 37°11.4'N
    Y b. 37°11.2'N
    N c. 37°10.9'N
    N d. 37°10.7'N
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
16416: At 1345, you depart from a position 1 mile due east of Montauk Point Light and set course for Block Island Southeast Light at 9 knots. At 1430 your position is Latitude 41° 06.3' North Longitude 071° 41.9' West

What was the current encountered since 1345? 

    N a. Set 015°, drift 0.5 knot
    Y b. Set 195°, drift 0.5 knot
    N c. Set 015°, drift 0.7 knot
    N d. Set 195°, drift 0.7 knot
16444: At 1042 you take the following round of bearings:

Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T at a speed of 9.5 knots.

What is the course per standard magnetic compass? 

    N a. 069.5°psc
    N b. 060.5°psc
    Y c. 079.5°psc
    N d. 080.5°psc
16711: At what time will you cross the 60 foot curve if you make good 12 knots? 

    Y a. 0528
    N b. 0534
    N c. 0541
    N d. 0544