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.
74: You are turning for 7.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
N a. 6.8 mph N b. 7.8 mph N c. 7.9 mph Y d. 8.8 mph 77: You pass Morrison Towhead Light (mile 890.5 AHP) at 1723. What was your average speed since leaving Cairo?
N a. 8.8 mph Y b. 8.5 mph N c. 7.8 mph N d. 7.5 mph 100: Which of the following statements concerning the buoys on the Mississippi River is TRUE?
Y a. Buoy locations may be changed to indicate the channel for the existing river stage. N b. The buoys are maintained on station year round. N c. Buoys have permanent moorings on the river bottom and will not shift position. N d. The position of river buoys can be determined by consulting the latest Light List - Vol. V. 227: At 2037, you change course to make good a course of 016°T. There is no current, but a westerly wind is causing 3° leeway. What course per standard magnetic compass (psc) should you steer to make good the course 016°T?
Y a. 022°psc N b. 025°psc N c. 028°psc N d. 031°psc 371: You are steering 087°pgc and turning for 6.8 knots. At 0600, you take the following bearings:
Little Gull Island Light bearing 089.5° pgc
Bartlett Reef Light bearing 047° pgc
What is your 0600 position?
N a. LAT 41°11.2'N, LONG 72°14.6'W N b. LAT 41°11.7'N, LONG 72°14.4'W Y c. LAT 41°12.1'N, LONG 72°13.8'W N d. LAT 41°12.5'N, LONG 71°14.9'W 466: Determine the great circle distance and initial course from LAT 25°50.0'N, LONG 77°00.0'W to LAT 35°56.0'N, LONG 06°15.0'W.
N a. 3470 miles, 298°T N b. 3518 miles, 028°T Y c. 3616 miles, 062°T N d. 3718 miles, 118°T 468: Determine the great circle initial course from LAT 07°05.0'N, LONG 81°45.0'W to LAT 21°15.0'N, LONG 157°40.0'W.
N a. 128°T N b. 217°T Y c. 290°T N d. 326°T 484: You are on a great circle track departing from position LAT 25°50'N, LONG 77°00'W. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. The distance along the great circle track from the vertex to a point (X) is 600 miles westward. Determine the position of point (X) on the great circle track.
N a. LAT 36°47.5'N, LONG 38°21.8'W N b. LAT 36°50.4'N, LONG 38°25.6'W Y c. LAT 36°55.6'N, LONG 38°30.0'W N d. LAT 37°02.3'N, LONG 38°34.4'W 574: If you are making 10 knots, what is your ETA at York Spit Channel Buoys "19" and "20"?
N a. 0959 N b. 1002 N c. 1004 Y d. 1006 745: On 13 October , at 1847 ZT, your vessel's DR position is LAT 42°17.4'N, LONG 138°46.2'W. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 42°16.8', with an index error of 3.2' on the arc. Your chronometer reads 03h 45m 20s and is 1m 32s slow. What is your latitude by Polaris, given a height of eye of 44 feet?
Y a. 42°09.1'N N b. 42°12.5'N N c. 42°16.0'N N d. 42°19.5'N 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 1021: On 30 March , your 0145 DR position is LAT 29°30'S, LONG 122°45'E. You are on course 055°T at a speed of 22 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.
N a. LAT 28°24.6'S, LONG 124°21.4'E Y b. LAT 28°39.9'S, LONG 124°18.6'E N c. LAT 28°41.5'S, LONG 124°41.5'E N d. LAT 29°20.1'S, LONG 123°41.0'E 1366: On which river is New Providence, TN located?
N a. Allegheny N b. Upper Mississippi N c. Ohio Y d. Cumberland 1457: On 25 August , your 1926 zone time DR position is LAT 24°17.0'S, LONG 05°47.0'W. At that time, you observe Fomalhaut bearing 117°psc. The chronometer reads 07h 26m 52s, and the chronometer error is 00m 15s fast. The variation is 1.5°E. What is the deviation of the standard magnetic compass?
N a. 0.2°W N b. 0.4°E N c. 1.3°W Y d. 2.8°W 1733: What are the dimensions of the channel maintained at Baton Rouge, LA?
N a. 30 feet x 300 feet N b. 40 feet x 300 feet Y c. 45 feet x 500 feet N d. 30 feet x 500 feet 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 1842: What town is located at mile 389.8 AHP?
N a. Whitehall N b. Belmont N c. St. James Y d. Rodney 1873: On 12 June , your 1845 DR position is LAT 21°47'N,
LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 174.0°T at a sextant altitude (hs) of 18°58.6'. The index error is 0.5°
on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
Y a. Muhlifain N b. Alpha Hydri N c. Almak N d. Alpha Muscae 1898: On 22 May , your 0437 DR position is LAT 25°18.5'N, LONG 51°18.0'W. You observe an unidentified star bearing 142°T at an observed altitude (Ho) of 23°10.2'. The chronometer reads 07h 40m 40s, and is 03m 24s fast. What star did you observe?
N a. Markab N b. Diphda N c. Sabik Y d. Fomalhaut 2006: On 8 November , your 1731 zone time DR position is LAT 27°16.0'N, LONG 137°25.0'W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
Y a. Alphecca, Fomalhaut, Schedar N b. Antares, Rasalhague, Altair N c. Sirius, Hamal, Dubhe N d. Peacock, Ankaa, Al Na'ir 2017: On 2 February , your 0400 zone time DR position is LAT 24°14.0'N, LONG 163°28.0'W. You are on course 322°T at a speed of 22 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
Y a. Saturn, Antares, Rasalhague N b. Jupiter, Saturn, Polaris N c. Saturn, Polaris, Zubenelgenubi N d. Jupiter, Spica, Denebola 2204: The Clinch River empties into which river?
N a. Arkansas N b. Mississippi N c. Ohio Y d. Tennessee 2275: You observe the lower limb of the Sun at a sextant altitude (hs) of 24°00.7' on 10 January . The index error is 2.6' off the arc. The height of eye is 55 feet. What is the observed altitude (Ho)?
N a. 24°07.4' N b. 24°08.9' Y c. 24°10.2' N d. 24°11.8' 2324: At 1547 ZT, on 22 May , in DR position LAT 45° 12.8' N, LONG 028° 15.4' W, the Moon’s upper limb is observed on the visible horizon, bearing 120.0° psc. Variation is 2° W. What is the deviation?
N a. 1.4°W Y b. 2.6°E N c. 1.4°E N d. 2.6°W 2669: You are steering 143°T, and a light is picked up dead ahead at a distance of 18.2 miles at 2006. You change course to pass the light 5.5 miles off abeam to port. If you are making 14.5 knots, what is your ETA at a position 5.5 miles off the light?
N a. 2115 Y b. 2118 N c. 2121 N d. 2124 2787: What is the length of the trip?
Y a. 1088.5 miles N b. 1332.2 miles N c. 1334.6 miles N d. 1566.4 miles 4014: 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 157°.
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. 2.0°W Y b. 1.5°W N c. 1.0°W N d. 0.0° 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 10709: At 0726 you depart Lake Montauk with light 1 close aboard and set course 065° per standard magnetic compass at 6.7 knots. At 0912 your GPS position is LAT 41°10.5'N, LONG 71°46.6'W. What is the current?
N a. 151°T at 1.2 knots N b. 164°T at 0.7 knot N c. 227°T at 0.9 knot Y d. 240°T at 1.4 knots 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 11504: At 1016 your position is LAT 41°07.6'N, LONG 71°38.5'W. At 1116 your position is LAT 41°01.4'N, LONG 71°29.4'W. What was the course made good between the two positions?
Y a. 132°T N b. 135°T N c. 140°T N d. 143°T 11804: Your engines are making turns for 8 knots and a northerly wind is causing 3° of leeway. There is a current of 220°T at 1.5 knots. What is the course to steer between Branford Reef Light and Faulkner Island Light?
Y a. 084°T N b. 095°T N c. 102°T N d. 108°T 13005: At 1715 your position is LAT 41°00.0'N, LONG 72°40.0'W. You are making turns for 15.5 knots. What is your ETA at a position 1.5 miles due south of Stratford Shoal Middle Ground Light?
N a. 1820 N b. 1824 N c. 1828 Y d. 1832 13100: Your position is LAT 41°15.2'N, LONG 71°50.1'W at 1347. You are turning for 6.9 knots. What is your ETA at Shagwong Reef Buoy "7SR"?
Y a. 1506 N b. 1515 N c. 1521 N d. 1527 13406: You are planning to anchor your vessel at LAT 41°01.1'N, LONG 73°02.8'W. What type of bottom should you expect at this position?
N a. Gray sand N b. Soft mud Y c. Gray mud N d. Hard sand 14203: What is the vertical clearance of the fixed bridge across the entrance to Rock Creek at Stevenson, Washington?
Y a. 18 feet N b. 36 feet N c. 54 feet N d. 70 feet 14502: You are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville reservoir stands at 84 feet above MSL. If the highest point on your vessel is 49 feet above the water, what will be the vertical clearance as you pass under the center of the Bridge of the Gods?
Y a. 74.0 feet N b. 86.0 feet N c. 97.5 feet N d. 123 feet 15017: At 2100, you alter course to 250°T and reduce speed to 7 knots. You enter the traffic separation scheme on the inbound side. At 2200, your fix shows you crossing a broken purple line on the chart, and you observe North Chesapeake Entrance Lighted Gong Buoy "NCD" to port. This area is __________.
Y a. a precautionary area centered on buoy "CBJ" N b. a pilotage area N c. an area with local magnetic disturbances N d. in inland waters 15044: At 0841 Chesapeake Light bears 164° true, Cape Charles Light bears 312° true, and Cape Henry Light bears 247°
true. What was your course made good since 0811?
Y a. 226°true N b. 230°true N c. 233° true N d. 237°true 15044: At 0841 Chesapeake Light bears 164° true, Cape Charles Light bears 312° true, and Cape Henry Light bears 247°
true. What was your course made good since 0811?
Y a. 226°true N b. 230°true N c. 233° true N d. 237°true 15507: What course should you steer by your standard magnetic compass to make good a course of 280°T?
N a. 266°psc N b. 272°psc N c. 290°psc Y d. 294°psc 15720: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° Y b. 000° - 041° N c. 208° - 220° N d. 204° - 239° 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 16111: Which publication contains the specific information about navigating in York Spit Channel?
N a. Light List Y b. Coast Pilot N c. Chesapeake Bay Harbor- master's Regulations Manual N d. Navigator's Manual - Chesapeake Bay 16257: If your engines turn for 6.5 knots, and you encounter a 0.5 knot southerly current after weighing anchor. What is your ETA at point A?
N a. 0511 N b. 0501 Y c. 0450 N d. 0440 16342: At 2302 you fix your position at LAT 40°57.8'N, LONG 71°39.3'W. What current have you experienced since your 2209 fix?
Y a. 105°T at 1.0 knot N b. 105°T at 0.9 knot N c. 285°T at 1.0 knot N d. 285°T at 0.9 knot 16367: Weather broadcasts for the Norfolk area are broadcast on what frequency?
N a. 162.25 MHz N b. 162.30 MHz Y c. 162.55 MHz N d. 162.65 MHz 16465: At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6'
W. Course is 250°T. At 0605, Cape Henry Light bears 249°
T. At 0610, it bears 248°T. At 0625, it bears 247°T. Based on this, you know you are __________.
N a. meeting a current from dead ahead N b. running with a current from dead ahead Y c. being set to the north N d. being set to the south 16618: What is the distance from your 0200 position to the point where Twenty-Eight Foot Shoal lighted buoy is abeam to starboard?
N a. 6.6 miles Y b. 6.9 miles N c. 7.1 miles N d. 7.3 miles