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.
48: The Clinch River empties into which river?
N a. Arkansas N b. Mississippi Y c. Tennessee N d. Ohio 93: Which light characteristics does Quaker Oats Light (mile 952.6) have?
N a. 1 red flash every four seconds N b. 2 green flashes every 5 seconds N c. 2 red flashes every 4 seconds Y d. 2 red flashes every 5 seconds 110: As you pass under the Baton Rouge RR and Highway 190 bridge you receive a call from another tow upriver. What channel on the VHF should you be monitoring?
N a. 1 Y b. 13 N c. 16 N d. 67 113: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
N a. Ferry crossings Y b. Utility crossings N c. Aerial cable crossings N d. Bridge construction 149: Your engines are turning for 8.2 mph. You estimate the current at 1.5 mph. What is your speed over the ground?
Y a. 9.7 mph N b. 8.8 mph N c. 8.2 mph N d. 6.7 mph 216: NOAA VHF-FM weather broadcasts from New London, CT are on __________.
Y a. 162.55 MHz N b. 162.40 MHz N c. 162.30 MHz N d. 162.25 MHz 309: A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mid-latitude sailing?
N a. 117.3°T, 503.0 miles N b. 117.9°T, 504.0 miles N c. 118.6°T, 508.0 miles Y d. 119.2°T, 512.0 miles 365: You sighted Trestle "A" in line at 0707 and are steering 108°T. At 0731, Cape Henry Light bears 136°T; Cape Charles Light bears 032.5°T; and Thimble Shoal Tunnel South Light bears 282°T. What was the speed made good between 0707 and 0731?
N a. 9.4 knots N b. 9.2 knots Y c. 8.8 knots N d. 8.3 knots 409: A vessel steams 1082 miles on course 047°T from LAT 37°18.0'N, LONG 24°40.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 49°30.0'N, LONG 06°22.0'W N b. LAT 49°33.0'N, LONG 06°25.0'W Y c. LAT 49°36.0'N, LONG 06°28.0'W N d. LAT 49°39.0'N, LONG 06°31.0'W 502: At 2142, you take the following bearings:
Stratford Point Light 331°T
Stratford Shoal Middle Ground Light 280°T
Old Field Point Light 223°T
What is your 2142 position?
N a. LAT 41°02.7'N, LONG 73°01.2'W Y b. LAT 41°03.0'N, LONG 73°01.7'W N c. LAT 41°03.1'N, LONG 73°01.3'W N d. LAT 41°03.3'N, LONG 73°01.9'W 523: At what time will you cross the 60 foot curve if you make good 12 knots?
N a. 0544 N b. 0541 N c. 0534 Y d. 0528 672: What is the total length of the trip?
Y a. 922.3 miles N b. 985.3 miles N c. 1155.8 miles N d. 1187.3 miles 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 701: At 1118, on 24 May, you pass Natchez Gage and estimate the current will average 3.0 mph for the remainder of the time on the Mississippi River. What is your ETA at Cairo, IL if you continue to turn for 10 mph?
N a. 0840, 26 May N b. 2218, 26 May N c. 2218, 27 May Y d. 2339, 27 May 755: You are taking a time tick using the 1400 signal from Buenos Aires, Argentina. You hear a 0.4 second dash followed by a series of dots, noting that the 29th and the 56th to 59th dots are omitted. At the start of the following 0.4 second dash (which is followed by an 8 second pulse), the comparing watch reads 01h 59m 57s. When compared to the chronometer, the comparing watch reads 02h 00m 38s, and the chronometer reads 02h 01m 33s. What is the chronometer error?
N a. 0m 03s slow N b. 0m 4ls slow Y c. 0m 52s fast N d. 1m 36s fast 823: On 15 October , an ex-meridian altitude of the Sun's lower limb at upper transit was observed at 1146 ZT. Your DR position is LAT 22°42.0'N, LONG 139°52.0'E, and your sextant altitude (hs) is 58°30.4'. The index error is 3.4' on the arc, and your height of eye is 56.7 feet. The chronometer time of the observation is 02h 45m 06s, and the chronometer error is 01m 06s slow. Find the latitude at meridian transit from the ex-meridian observation.
N a. LAT 22°29.1'N Y b. LAT 22°35.2'N N c. LAT 22°58.1'N N d. LAT 23°20.6'N 1097: On 9 November , your 0400 DR position is LAT 18°24.0'S, LONG 97°36.0'W. You are on course 138°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0027
N a. LAT 18°15.0'S, LONG 98°52.5'W Y b. LAT 18°45.0'S, LONG 97°06.8'W N c. LAT 18°52.5'S, LONG 97°10.6'W N d. LAT 19°15.5'S, LONG 98°08.8'W 1132: Which light will you be passing at 0059, on 22 September, if you make good 9.2 knots?
Y a. Obion Bar Lt. N b. Kate Aubrey Lt. N c. Trotter Lt. N d. Quaker Oats Lt. 1211: It is 15 July and you are keeping +7 zone time. You are on course 095°, speed 16 knots. Your 0800 DR position is LAT 25°39.4'N, LONG 129°46.2'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 13h 40m 17s Y b. 13h 38m 26s N c. 12h 42m 20s N d. 12h 38m 20s 1215: It is 9 February and you are keeping zone time -6. You are on course 258°T, speed 19 knots. Your 0840 DR position is LAT 26°21.0'S, LONG 78°39.0'E. What is the time of the second estimate of LAN by ship's clocks?
N a. 12h 05m 21s N b. 12h 37m 12s N c. 13h 13m 40s Y d. 13h 05m 44s 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 1285: On 28 June , your 1820 ZT DR position is LAT 16°00.0'N,
LONG 31°00.0'W. You are on course 310°T at a speed of 18 knots. What will be the zone time of sunset at your vessel?
N a. 1828 N b. 1832 N c. 1836 Y d. 1840 1303: On which map would you find Redman Point, Arkansas?
Y a. 20 N b. 38 N c. 45 N d. 60 1658: On 23 August , in DR position LAT 24°07.0'N, LONG 136°16.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 074.5°psc. The chronometer reads 08h 56m 19s and is 02m 34s fast. Variation in the area is 2°W. What is the deviation of the magnetic compass?
N a. 2.5°E N b. 2.8°W Y c. 4.5°E N d. 4.8°W 1750: In addition to the Army Corps. of Engineers maps, data on bridge clearances may be found in the __________.
N a. Army Corps. of Engineers Regulations Y b. Light List N c. Waterways Journal N d. Channel Report 1811: Where would you find out which buoys, if any, are in place at Concordia Bar crossing (mile 596.0 AHP)?
Y a. Notice to Mariners N b. Bulletin board at the Rosedale Gage N c. Waterways Journal N d. None of the above 1879: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint unidentifiable star through a hole in the clouds. The star bore 351.5°T at a sextant altitude (hs) of 62°05.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
N a. Alpha Herculis N b. Kappa Scorpii N c. Alpha Arae Y d. Beta Ophiuchi 1918: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 295°T at an observed altitude (Ho) of 13°50.7'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. What star did you observe?
N a. Elnath N b. Fomalhaut N c. Pollux Y d. Markab 2052: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 2328: As you pass through the Chesapeake Bay Bridge and Tunnel, you sight Trestle "B" in line bearing 018°pgc. What is the gyro error by observation?
N a. 2°E Y b. 0° N c. 2°W N d. 4°W 2534: Your company wants to know at what time you will be arriving at the fleeting area at Sycamore Chute Light (mile 740.3 AHP) in Memphis, TN You are making turns for 9.0 mph and you estimate the average current at 2.2 mph. Figuring the distance and time from Hole in the Wall Lt. (mile 373.4 AHP), what is your ETA at Sycamore Chute Lt.?
N a. 0557, April 19th N b. 1045, April 19th Y c. 1242, April 19th N d. 1733, April 19th 2652: You are steering 163°T, and a light is picked up dead ahead at a distance of 11 miles at 0142. You change course to pass the light 2 miles off abeam to starboard. If you are making 13 knots, what is your ETA at the position 2 miles off the light?
N a. 0226 N b. 0229 Y c. 0232 N d. 0235 2697: You are underway on course 106°T at a speed of 15.3 knots.
You sight a buoy bearing 109°T at a radar range of 3.6 miles at 1725. If you change course at 1728, what is the course to steer to leave the buoy abeam to port at 0.5 mile?
N a. 100°T N b. 117°T Y c. 120°T N d. 125°T 2855: Your vessel is on a course of 107°T at 16 knots. At 0403 a light bears 129.5°T, and at 0426 the light bears 152°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0434, 3.2 miles Y b. 0442, 4.3 miles N c. 0434, 4.3 miles N d. 0442, 3.4 miles 3259: You have steamed 607 miles at 17.0 knots, and consumed 121 tons of fuel. If you have 479 tons of usable fuel remaining, how far can you steam at 14.5 knots?
N a. 1211 miles N b. 1748 miles N c. 2817 miles Y d. 3303 miles 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 3603: You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good?
DEVIATION TABLE
MAG HDG DEV
300° 2°E
315° 0°
330° 2°W
N a. 301°T N b. 303°T N c. 327°T Y d. 329°T 3619: Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?
N a. 128°T N b. 136°T N c. 162°T Y d. 170°T 3644: While enroute from Cape Town to Rio a vessel's course is 281°pgc. The variation for the locality is 24°W. The deviation is 4°E. The gyro error is 2°W. What is the true course made good?
Y a. 279°T N b. 261°T N c. 301°T N d. 283°T 3760: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 352°T, and the variation is 4°W. If the heading of your vessel at the time of the sighting is 359° per standard magnetic compass, what is the correct deviation?
Y a. 3°W N b. 7°E N c. 11°E N d. 11°W 4012: 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 magnetic compass heading of 210°.
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°
Y a. 0.0° N b. 0.5°W N c. 0.5°E N d. 1.0°E 10101: Your GPS position is LAT 36°59.0'N, LONG 75°48.6'W. What is the course per standard magnetic compass to a position one mile east of Cape Charles Buoy "14" (LAT 37°07.4'N, LONG 75°41.0'W)?
N a. 040°psc Y b. 045°psc N c. 049°psc N d. 053°psc 10902: Fishermans Island (LAT 37°05.0'N, LONG 75°57.7'W) is __________.
N a. privately owned N b. sparsely wooded and awash at spring tides N c. a high rocky promontory with marshy backwater Y d. a National Wildlife Refuge 11011: According to the U.S. Coast Pilot, what is the depth of the channel between State Pier No. 1 and the U.S. Navy Submarine Base in New London Harbor?
N a. 40 feet (12.1 meters) N b. 38 feet (11.5 meters) Y c. 36 feet (10.9 meters) N d. 34 feet (10.3 meters) 11104: What is the time of the first PM (Daylight Savings Time) maximum ebb current at Plum Gut on 10 August 1983?
N a. 1231 N b. 1249 N c. 1340 Y d. 1445 13006: Your 1600 position is LAT 41°08.0'N, LONG 72°44.8'W. You are making turns for 14 knots. What is your ETA at Mattituck Inlet?
N a. 1636 N b. 1643 Y c. 1647 N d. 1651 13707: The level of mean high water at Old Point Comfort is how many feet above the sounding datum?
N a. 1.5 feet N b. 2.2 feet Y c. 2.5 feet N d. 3.5 feet 15045: From your 0841 position, you are steering a course of 241°
true to the northeasterly inbound channel entrance, your speed is now 15 knots. What is your ETA abeam of buoy "NCA" (LL#375)?
N a. 0850 Y b. 0855 N c. 0901 N d. 0911 15156: Your 1600 position is LAT 37°22.5'N, LONG 75°32.3'W. The depth of water is about __________.
N a. 38 feet (11.5 meters) N b. 45 feet (13.6 meters) Y c. 52 feet (15.8 meters) N d. 59 feet (17.3 meters) 15445: As you proceed up York Spit Channel, what are the three base courses that you must steer to conform to the channel,
if steering by standard magnetic compass?
N a. 337.5°, 359.5°, 028.0° N b. 337.5°, 357.5°, 026.0° N c. 324.0°, 352.5°, 009.5° Y d. 340.0°, 000.5°, 025.0° 15799: At 0845, you are on a course of 097°T, and Townshend Ledge Buoy "10A" is close abeam to port. With a westerly current of 1.2 knots, what speed will you have to turn for from your 0845 position in order to arrive abeam of Six Mile Reef Buoy "8C" at 1030?
N a. 8.5 knots N b. 9.7 knots Y c. 10.9 knots N d. 12.1 knots 15810: You alter course from your 0045 position to head for a point 0.5 mile north of Mattituck Breakwater Light "MI". If the visibility is 10 miles and you make good 9 knots, at approximately what time will you lose sight of Saybrook Breakwater Light?
N a. You have already lost sight at 0045 Y b. 0055 N c. 0120 N d. The light is visible all the way to Mattituck Inlet 15906: As you enter the New Haven Outer Channel, you sight the range markers in line directly over the stern. Your heading at the time is 155.5° per gyrocompass. What is the gyro error?
N a. 1.0°E N b. 1.0°W Y c. 2.0°W N d. 0° 16220: At 0930, your position is LAT 41°16.5'N, LONG 71°41.4'W,
and you are turning for 7 knots. Allowing 3° leeway for southerly winds and estimating the current as 035° at 0.3
knot, what is the course to steer (pgc) to point "B"?
N a. 089°pgc N b. 091°pgc N c. 093°pgc Y d. 096°pgc 16517: At 0815, you change course to 079°T and head for the entrance of Great Salt Pond on Block Island. To compensate for a northerly wind, you estimate a 5° leeway is necessary. What course should you steer per gyrocompass to make good 079°T?
N a. 079°pgc N b. 076°pgc N c. 074°pgc Y d. 071°pgc