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.

185: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
211: You decide to use the 9960-Y and 9960-W rates. At 1915,
you obtain the following readings:

9960-Y-43936.0
9960-W-14653.3

What is your 1915 position?
386: 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?
386: 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
    N c. Set 238°T, drift 0.9 knot
    Y d. Set 070°T, drift 0.6 knot
412: A vessel steams 1650 miles on course 077°T from LAT 12°47'N, LONG 45°10'E. What is the latitude and longitude of the point of arrival by Mercator sailing? 

    N a. LAT 18°54'N, LONG 72°58'E
    Y b. LAT 18°58'N, LONG 72°52'E
    N c. LAT 19°02'N, LONG 72°44'E
    N d. LAT 19°06'N, LONG 72°36'E
418: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745? 

    Y a. 7.1 knots
    N b. 6.7 knots
    N c. 5.8 knots
    N d. 5.4 knots
437: At 0227, you are on course 087°T at 10 knots. What course per standard magnetic compass should you steer to make good your true course? 

    N a. 109°psc
    Y b. 105°psc
    N c. 102°psc
    N d. 099°psc
530: You observe the planet Jupiter at a sextant altitude (hs) of 66°27.6' on 26 May . The index error is 5.2' on the arc. The height of eye is 52 feet. What is the observed altitude (Ho)? 

    N a. 65°39.5'
    N b. 65°32.8'
    N c. 66°27.2'
    Y d. 66°15.0'
576: What is indicated by the dashed magenta line crossing York Spit Channel between buoys "20" and "22"? 

    N a. You are crossing the demarcation line between the COLREGS and the Inland Rules.
    N b. The line indicates a submarine cable, and you should not anchor in the area.
    Y c. The line marks the limits of a regulated area.
    N d. It marks the range between Ft. Wool Light and Cape Charles Harbor Range, Rear Light.
750: On 28 October , at 1754 ZT, your vessel's DR position is LAT 28°30'N, LONG 63°24'W. At this time, you obtain a sextant altitude (hs) of Polaris reading 28°42.6', with an index error of 2.4' on the arc. Your chronometer reads 09h 50m 00s, and is 4m 14s slow. What is your latitude by Polaris, given a height of eye of 28 feet (8.5 meters)? 

    N a. 28°25.2'N
    N b. 28°30.6'N
    Y c. 28°34.9'N
    N d. 28°41.3'N
827: On 16 November , your 1200 ZT DR position is LAT 26°48.0'S, LONG 124°32.0'W. Your vessel is on course 078°T, speed 17.0 knots. You observe an ex-meridian of the Sun's lower limb. The sextant (hs) reads 81°41.3'. The index error is 1.5' off the arc, and your height of eye is 56 feet. The chronometer time of the observation is 08h 15m 32s, and the chronometer is 03m 06s fast. What is your latitude at meridian transit? 

    Y a. 26°42.6'S
    N b. 26°47.1'S
    N c. 26°49.5'S
    N d. 26°52.3'S
978: On 11 November , your 0730 zone time position was LAT 19°58.0'N, LONG 143°54.0'W. Your vessel was steaming on course 084°T at a speed of 15.0 knots. An observation of the Sun's lower limb was made at 0931 ZT. The chronometer read 07h 29m 22s and was slow 02m 22s. The observed altitude (Ho) was 44°17.6'. LAN occurred at 1125 zone time (ZD +10). The observed altitude (Ho) was 52°17.4'. What was the longitude of your 1200 zone time running fix? 

    N a. 142°34.7'W
    N b. 142°37.1'W
    Y c. 142°40.2'W
    N d. 142°44.2'W
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
981: On 20 September , your 0730 zone time position was LAT 28°58.0'N, LONG 152°26.0'W. Your vessel was steaming on course 225°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0931 ZT. The chronometer read 07h 29m 20s and was slow 02m 22s. The observed altitude (Ho) was 44°14.4'. LAN occurred at 1206 zone time. The observed altitude (Ho) was 62°49.5'. What was the longitude of your 1200 zone time running fix? 

    N a. LONG 153°32.5'W
    N b. LONG 153°27.2'W
    Y c. LONG 153°23.5'W
    N d. LONG 153°20.0'W
1125: Where would you find out which buoys, if any, are in place at Concordia Bar crossing (mile 596.0 AHP)? 

    Y a. Local Notice to Mariners
    N b. Bulletin board at the Rosedale Gage
    N c. Waterways Journal
    N d. None of the above
1176: On 24 January , your 0700 zone time DR position is LAT 22°25.0'N, LONG 46°10.0'W. Your vessel is on course 110°T at a speed of 12.0 knots. What is the zone time of local apparent noon (LAN)? 

    N a. 1203
    N b. 1208
    Y c. 1212
    N d. 1215
1189: On 7 February , your 0800 zone time DR position is LAT 22°16.0'N, LONG 92°26.0'W. Your vessel is on course 270°
T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)? 

    N a. 1218
    N b. 1222
    N c. 1226
    Y d. 1230
1271: At 0400 zone time, on 24 June , your DR position is LAT 23°10.0'N, LONG 085°33'W. You are steering 295°T at a speed of 10.0 knots. What is the zone time of sunrise? 

    N a. 0452
    Y b. 0458
    N c. 0504
    N d. 0510
1364: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo? 

    N a. List of Buoys and Daymarks
    N b. U.S.C.G. Light List
    N c. Army Corps. of Engineers Navigation Chart
    Y d. None of the above
1414: 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
1458: On 6 August , your 1552 zone time DR position is LAT 24°26.0'S, LONG 73°19.0'E. At that time, you observe the Sun bearing 302°psc. The chronometer reads 10h 55m 07s, and the chronometer error is 02m 38s fast. The variation is 6°E. What is the deviation of the standard magnetic compass? 

    N a. 4.1°W
    N b. 4.6°E
    N c. 5.9°E
    Y d. 6.1°W
1473: On 26 January , your 1615 ZT DR position is LAT 27°14.0'S, LONG 57°22.0'W. At that time, you observe the Sun bearing 266°psc. The chronometer reads 08h 13m 19s, and the chronometer error is 01m 46s slow. The variation is 4°E. What is the deviation of the standard magnetic compass? 

    N a. 4.8°E
    N b. 4.9°W
    Y c. 5.9°W
    N d. 7.8°E
1876: On 2 October , your 1845 DR position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 11°37.6' bearing 066°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe? 

    N a. Scheat
    N b. Ruckbah
    N c. Caph
    Y d. Algenib
1909: On 22 March , your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 294°T at an observed altitude (Ho) of 33°02.7'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. What star did you observe? 

    N a. Regulus
    Y b. Menkar
    N c. Rigel
    N d. Alphard
2013: On 28 October , morning twilight will occur around 0524 ZT in LAT 25°25.0'N, LONG 32°33.3'W. Considering their magnitude and location, which group will be the three stars best suited to observe for a star fix at star time? 

    N a. Sirius, Hamal, Denebola
    N b. Sirius, Denebola, Dubhe
    Y c. Sirius, Capella, Denebola
    N d. Sirius, Mirfak, Hamal
2110: From your 0100 position, you change course to 258° per standard magnetic compass. Your engine speed is 10.0 knots. A short time later, your fathometer reads 51 feet (15.5 meters) under the keel. What is the water depth? 

    N a. 38.5 feet (11.7 meters)
    N b. 43.5 feet (13.2 meters)
    N c. 51.0 feet (15.5 meters)
    Y d. 59.5 feet (18.0 meters)
2500: You are underway and intend to make good a course of 227°T. You experience a current with a set and drift of 350°T at 2.1 knots, and a northwest wind produces a leeway of 5°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 11 knots. What will be your speed made good over your intended course of 227°T? 

    N a. 18.5 knots
    N b. 18.1 knots
    N c. 17.6  knots
    Y d. 17.2 knots
2653: You are steering 019°T, and a light is picked up dead ahead at a distance of 11.6 miles at 0216. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light? 

    N a. 0258
    N b. 0301
    Y c. 0304
    N d. 0307
2654: You are steering 231°T, and a light is picked up dead ahead at a distance of 12.3 miles at 0338. You change course to pass the light 4 miles off abeam to starboard. If you are making 16.5 knots, what is your ETA at the position 4 miles off the light? 

    Y a. 0420
    N b. 0423
    N c. 0426
    N d. 0429
2698: While on a course of 138°T, a light bears 14° on the starboard bow at a distance of 8.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard? 

    Y a. 132°T
    N b. 135°T
    N c. 138°T
    N d. 141°T
2878: Your vessel is steering 143°T at 16 knots. At 2147 a light bears 106°T, and at 2206 the same light bears 078°T. What will be your distance off abeam? 

    N a. 5.1 miles
    N b. 5.4 miles
    Y c. 5.9 miles
    N d. 6.5 miles
3078: If the speed necessary for reaching port at a designated time is 17.8 knots and the pitch of the propeller is 24.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% positive slip? 

    N a. 67
    N b. 71
    N c. 75
    Y d. 79
3266: Your vessel has consumed 1087 bbls of fuel after steaming 2210 miles at a speed of 10.75 kts. What is the maximum speed you can steam for the last 1000 miles of the voyage on the remaining 725 bbls, if you estimate 3% of the fuel is not usable? 

    N a. 11.43 knots
    N b. 11.76 knots
    Y c. 12.84 knots
    N d. 15.33 knots
3282: While steaming at 16.3 knots, your vessel consumes 363 barrels of fuel oil per day. In order to reduce consumption to 298 barrels of fuel oil per day, what is the maximum speed the vessel can turn for? 

    N a. 12.6 knots
    N b. 13.1 knots
    N c. 14.7 knots
    Y d. 15.3 knots
3314: You have steamed 150 miles and consumed 17 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 350 miles? 

    N a. 12.82 tons
    N b. 29.41 tons
    N c. 34.00 tons
    Y d. 39.66 tons
11707: Your position is LAT 37°00.0'N, LONG 75°30.0'W. What is the course to steer per standard magnetic compass to arrive at LAT 36°59.0'N, LONG 75°48.5'W, if you are turning for 7.8 knots, the current is 139°T at 1.3 knots, and a northwesterly wind is causing 3° of leeway? 

    N a. 290.0°psc
    Y b. 286.0°psc
    N c. 283.5°psc
    N d. 280.5°psc
13300: The soundings on this chart are measured in __________. 

    Y a. feet
    N b. yards
    N c. fathoms
    N d. meters
15063: At 0830, you want the latest weather forecasts for the Falkner Island area. On what frequency do you set your FM radio for this information? 

    N a. 2182 kHz
    N b. 162.80 Mhz
    N c. 156.65 Mhz
    Y d. 162.55 Mhz
15265: Orient Point Light is __________. 

    N a. lighted only during daytime when the sound signal is in operation
    N b. maintained only from May 1 to Oct 1
    N c. 64 feet (19.4 meters) above mean low water
    Y d. lighted throughout 24 hours
15511: From your 1830 fix, you come left to a course of 290°T.
Which of the following statements concerning Watch Hill Light is FALSE? 

    N a. The nominal range of its white light is 15 miles.
    N b. It displays both red and white lights.
    N c. Its horn blasts every 30 seconds in fog.
    Y d. Its geographic range is 18.5 miles at a 35 foot (10.7 meter) height of eye.
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.
15708: Which structure should you look for while trying to locate Southwest Ledge Light? 

    N a. White conical tower with a brown band midway of height
    Y b. White octagonal house on a cylindrical pier
    N c. Conical tower, upper half white, lower half brown
    N d. Black skeleton tower on a granite dwelling
16110: If you are making 8.3 knots over the ground, what is your ETA at the first turning point in York Spit Channel between buoys "29" and "30"? 

    N a. 0444
    N b. 0456
    N c. 0508
    Y d. 0522
16363: At 0405, you increase speed and at 0500 your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of water? 

    N a. 46 feet (13.9 meters)
    Y b. 54 feet (16.4 meters)
    N c. 62 feet (18.8 meters)
    N d. 66 feet (20.0 meters)
16419: You estimate the current to be 160°T at 1.2 knots. What should your course and speed be in order to make good 000°
T at 10 knots? 

    Y a. 358°T at 11.1 knots
    N b. 358°T at 09.8 knots
    N c. 002°T at 11.2 knots
    N d. 002°T at 09.9 knots
16539: If you estimate 3° leeway due to northerly winds, which course will you steer per standard magnetic compass (psc)
to make good 255°T? 

    N a. 267°psc
    Y b. 270°psc
    N c. 272°psc
    N d. 274°psc
16644: Visibility becomes variable in patchy fog and you maintain 5 knots speed. At 0610 you sight Montauk Point Light bearing 239°pgc, and at 0630 you sight Watch Hill Point Light bearing 333°pgc. What is the position of your 0630 running fix? 

    Y a. LAT 41°08.3'N, LONG 71°45.4'W
    N b. LAT 41°08.2'N, LONG 71°45.8'W
    N c. LAT 41°08.1'N, LONG 71°45.1'W
    N d. LAT 41°08.0'N, LONG 71°45.2'W
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