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.
58: What daymark will you see as you approach Warnicott Bar Lt. (mile 351.3 AHP)?
N a. Red diamond N b. Red triangle N c. White square Y d. Green square 66: At 2126, you pass Morganza Bend Light (mile 278.4 AHP). At 0122, 4 January, you pass Red River Landing Gage (302.4 AHP). You have been turning for 7.5 mph. What is the current?
N a. 6.2 mph N b. 2.7 mph N c. 1.8 mph Y d. 1.4 mph 71: The Natchez Gage reads 20.6 feet. The high point on your towboat is 47 feet above the water. What is the vertical clearance as you pass under the Natchez Highway Bridge?
N a. 78.6 feet N b. 72.5 feet N c. 64.1 feet Y d. 58.4 feet 257: At 0705, you change course to head for The Race. You wish to leave Race Rock Light bearing due north at 0.4 mile. If the current is 110°T, at 2.8 knots, and you are turning for 12.0 knots, what course (pgc) should you steer?
N a. 252°pgc N b. 257°pgc N c. 265°pgc Y d. 271°pgc 319: At 2100, you have passed through the Chesapeake Bay Bridge and Tunnel and determine your position to be LAT 37°01.3'N, LONG 76°03.0'W. The current is flooding in a direction of 303°T at 2.5 knots. Adjusting your course for set and drift, which course would you steer while turning RPMs for 6 knots to make good a course of 175°T?
N a. 190°T N b. 183°T N c. 164°T Y d. 156°T 341: You are on course 082°T, and the engines are turning for 8 knots. At 0352, you take the following bearings:
Stratford Point Light 016°pgc Stratford Shoal (Middle Ground) Light 137°pgc
What is your 0352 position?
Y a. LAT 41°05.2'N, LONG 73°07.8'W N b. LAT 41°05.4'N, LONG 73°07.3'W N c. LAT 41°05.3'N, LONG 73°07.5'W N d. LAT 41°05.4'N, LONG 73°07.7'W 385: At 0715 you take the following bearings:
Race Rock Light 328°pgc
Little Gull Island Light 249°pgc
Mt. Prospect Antenna 036°pgc
Based on your 0715 fix, which statement is TRUE?
N a. You are governed by the Inland Rules. N b. Your fathometer reads about 265 fathoms. N c. You are in a cable area. Y d. You are to the left of your track line. 558: At 0530, you change course to 090°T and increase speed to 8.5 knots. What is the course to steer per gyro compass if northerly winds are causing 2° of leeway?
N a. 094°pgc N b. 092°pgc Y c. 090°pgc N d. 088°pgc 579: Which loran line of position will serve as a danger reading on the loran to keep you west of the submerged obstruction at LAT 37°24.2'N, LONG 76°03.7'W, after you leave York Spit Channel?
Y a. Not less than 9960-X-27246 N b. Not more than 9960-Y-41595 N c. Not less than 9960-Y-41595 N d. Not less than 9960-Z-58622 599: Which town is located at mile 663.5 AHP?
Y a. Helena N b. Friers Point N c. St. Francis N d. Rodney 600: What is the brown colored tint shown at Bordeaux Point Dykes (mile 681.0 AHP)?
N a. river gage N b. fish hatchery N c. levee Y d. dredge material 637: 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?
N a. 48.0 feet Y b. 53.2 feet N c. 68.2 feet N d. 116.0 feet 826: On 5 May , in DR position LAT 38°34.5'N, LONG 124°20.7'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 07h 59m 10s, and the chronometer error is 01m 10s slow. The sextant altitude (hs) is 67°27.0'. The index error is 1.4' on the arc, and your height of eye is 30 feet. What is the latitude at meridian transit?
N a. LAT 38°26.4'N N b. LAT 38°30.2'N Y c. LAT 38°36.0'N N d. LAT 38°41.2'N 1079: On 12 Dec. , your 1830 ZT DR position is LAT 24°16.0'S, LONG 41°18.0'W. You are on course 235°T at a speed of 16.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1930 running fix. NP-0009
N a. LAT 24°12.5'S, LONG 41°10.9'W Y b. LAT 24°16.9'S, LONG 41°18.2'W N c. LAT 24°25.2'S, LONG 41°39.9'W N d. LAT 27°46.9'S, LONG 41°31.2'W 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 1494: On 5 August , your 0310 ZT position is LAT 09°02'N, LONG 21°08'W. You observe Polaris bearing 002°pgc. At the time of the observation the helmsman noted that he was heading 316°pgc and 329°psc. The variation is 15°W. What is the deviation for that heading?
N a. 0.0° N b. 1.5°W N c. 3.0°W Y d. 0.5°E 1502: On May 20 , you are keeping ZD +4, and your 2300 (ZD +4) DR position is LAT 42°07'N, LONG 81°02'W. At that time, you observe Polaris bearing 012°psc. The chronometer time of the observation is 03h 02m 23s, and the chronometer is 1m 17s fast. The variation is 9.5°W. What is the deviation of the magnetic compass?
Y a. 2.7°W N b. 12.2°W N c. 6.8°E N d. 12.2°E 1642: From your 2129 position you reduce engine speed to 14 knots. What is the course to make good from your 2129 position to arrive 0.3 mile north of Lighted Whistle Buoy "NCA" (LL#375) assuming no set and drift?
N a. 216°T N b. 219°T Y c. 222°T N d. 225°T 1664: On 10 February in DR position LAT 25°32.0'N, LONG 135°15.0'E, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 109°psc. The chronometer reads 09h 43m 25s and is 03m 20s fast. Variation in the area is 4.5°W. What is the deviation of the standard magnetic compass?
Y a. 1.6°E N b. 2.9°W N c. 10.5°E N d. 30.5°W 1682: On 11 May , in DR position LAT 37°06.0'N, LONG 45°45.0'W you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 089.0°psc. The chronometer reads 07h 57m 06s and is 01m 48s slow. Variation in the area is 20.0°W. What is the deviation?
N a. 3.6°W Y b. 2.2°W N c. 1.4°W N d. 3.6°E 1702: You are upbound approaching Springfield Bend Lt. (mile 244.8 AHP) downriver from Profit Island. Which of the following statements is TRUE?
Y a. Profit Island Chute is closed to navigation. N b. Tow length must not exceed 600 feet to use Profit Island Chute. N c. Tows must navigate toward left ascending bank when passing Profit Island Chute. N d. Profit Island Chute is open to navigation and is a shortcut for single barge tows. 1756: You pass Hole in Wall Light at 1200, 24 May. What is your ETA off the Mhoon Landing Gage if you average 6.5 mph?
N a. 0152, 26 May N b. 0426, 26 May N c. 1128, 26 May Y d. 1221, 26 May 1782: At 2043 ZT, on 13 October , in DR position LAT 43°57.3'S, LONG 147°16.0'E, you observe an amplitude of Venus. The planet is about one Sun's diameter above the horizon and bears 236.2°pgc. The variation is 15°E. What is the gyro error?
Y a. 0.0° N b. 0.9°E N c. 1.8°E N d. 0.4°W 1868: On 12 June , your 1945 DR position is LAT 21°47.0'N, LONG 46°52.0'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 130°T at a sextant altitude (hs) of 45°21.2'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 10h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Theta Carinae N b. Epsilon Leonis Y c. Beta Librae N d. Zeta Puppis 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 2106: At 0005, on 26 January, your position is LAT 41°11.8'N,
LONG 72°20.5'W. From this position, you plot a course to steer to a point one half mile north of Mattituck Breakwater Light "MI" with an engine speed of 9.0 knots. If there are no set and drift, what course should you steer?
N a. 207°psc N b. 213°psc N c. 220°psc Y d. 235°psc 2272: As you approach Buckridge Light (mile 412.5 AHP), which type of daymark would you see on the light structure?
N a. Red diamond N b. Red triangle N c. Green diamond Y d. Green square 2862: Your are on course 317°T at 13 knots. A light is bearing 22.5° relative at 0640. At 0659 the same light is bearing 45° relative. At what time should the light be abeam?
N a. 0709 Y b. 0712 N c. 0718 N d. 0721 2880: Your vessel is steering 218°T at 19 knots. At 2223 a light bears 261°T, and at 2234 the same light bears 289°T. What will be your distance off abeam?
N a. 4.5 miles Y b. 4.9 miles N c. 5.3 miles N d. 5.7 miles 2890: You are steaming on a course of 084°T at a speed of 13 knots. At 1919 a lighthouse bears 106.5°T. At 1957 the same lighthouse bears 129°T. What will be your distance off the lighthouse when abeam?
N a. 4.3 miles Y b. 5.7 miles N c. 7.1 miles N d. 8.2 miles 2891: You are steaming on course 168°T at a speed of 18 knots. At 1426 you sight a buoy bearing 144°T. At 1435 you sight the same buoy bearing 116°T. What is your distance off at the second bearing and predicted distance when abeam?
Y a. 2.3 miles 2nd bearing, 1.8 miles abeam N b. 2.5 miles 2nd bearing, 2.8 miles abeam N c. 2.8 miles 2nd bearing, 1.8 miles abeam N d. 3.3 miles 2nd bearing, 2.8 miles abeam 3269: Your vessel arrives in port with sufficient fuel to steam 812 miles at 15 knots. If you are unable to take on bunkers, at what speed must you proceed to reach your next port, 928 miles distant?
N a. 13.6 knots Y b. 14.0 knots N c. 15.3 knots N d. 15.7 knots 3622: Your vessel is steering a course of 337°psc. Variation for the area is 13°W, and deviation is 4°E. The wind is from the south, producing a 3° leeway. Which true course are you making good?
N a. 325°T N b. 328°T Y c. 331°T N d. 349°T 3637: You desire to make good a true course of 347°. The variation is 11°E, magnetic compass deviation is 7°W, and gyrocompass error is 4°W. A north by east wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 339°psc N b. 343°psc Y c. 347°psc N d. 351°psc 3654: You are taking a time tick using the 2000 signal from Kekaha-Kauai, Hawaii (WWVH). You hear a series of 1 second dashes followed by a 9 second silent period, then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 07h 59m 54s. When compared to the chronometer, the comparing watch reads 08h 00m 00s, and the chronometer reads 08h 00m 06s. What is the chronometer error?
N a. 0m 06s slow N b. 0m 06s fast N c. 0m 12s fast Y d. No error 10604: At 2245 your GPS position is LAT 41°01.75'N, LONG 72°48.40'W. You are steering course 086° per standard magnetic compass at a speed of 6.0 knots. At 2400 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°04.20'N, LONG 72°38.85'W. What were your set and drift?
N a. 162°T at .2 knot N b. 180°T at .4 knot N c. 339°T at .5 knot Y d. 007°T at .4 knot 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 10909: What will be the average direction of the current in Lynnhaven Roads at 1000 DST (ZD +4) on 23 July 1983?
N a. 305°T N b. 125°T N c. 070°T Y d. Almost slack water 11410: At 0647 a GPS fix places your vessel 1 mile due south of buoy "8C" (buoy position LAT 41°10.8'N, LONG 72°29.4'W). At 0753 another GPS fix places your vessel at LAT 41°08.6'N, LONG 72°41.6'W. What were your true course and speed made good?
N a. 088° at 9.6 knots N b. 192° at 8.8 knots Y c. 263° at 8.5 knots N d. 268° at 9.1 knots 12308: You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 094° per standard magnetic compass. If your vessel was heading 207° per standard magnetic compass at the time, which of the following is TRUE?
Y a. The deviation table is correct for that heading. N b. The deviation by observation is 3°E. N c. The compass error is 12°W. N d. You should subtract 18° from all bearings of 094°. 12608: You are on course 083° per standard magnetic compass when you take the following bearings: Branford Reef Light 344.5°psc Falkner Island Light 053.5°psc Mattituck Inlet Light 141.5°psc What is your position?
N a. LAT 41°10.4'N, LONG 72°43.0'W N b. LAT 41°09.6'N, LONG 72°44.9'W N c. LAT 41°08.4'N, LONG 72°43.7'W Y d. LAT 41°08.0'N, LONG 72°44.8'W 12704: You are on course 137° per standard magnetic compass when you take the following bearings: Watch Hill Point Light - 051°psc Montauk Point Light - 184°psc Race Rock Light - 279°psc What is your position?
Y a. LAT 41°15.2'N, LONG 71°54.4'W N b. LAT 41°15.1'N, LONG 71°53.8'W N c. LAT 41°15.1'N, LONG 71°54.9'W N d. LAT 41°15.0'N, LONG 71°53.7'W 13801: You are operating in the area approximately 2 miles southeast of Kelsey Point when you realize that your vessel's intended track will carry you over the wreck charted at LAT 41°13.5'N, LONG 72°29.6'W. Which statement is TRUE?
N a. The chart indicates the exact position of the wreck. N b. The wreck has been cleared by wire drag to a depth of 39 ft. Y c. The wreck represents a danger to surface navigation. N d. The wreck is visible above the sounding datum. 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) 15243: At 1245 the GPS shows your position to be LAT 41°10.3'N, LONG 72°44.2'W. You are steering a course of 284°T at an engine speed of 13.0 knots. At what time would you expect the New Haven Harbor Outer Range to be in line if you have a current setting 112°T at 1.2 knots?
N a. 1318 Y b. 1323 N c. 1328 N d. 1343 15243: At 1245 the GPS shows your position to be LAT 41°10.3'N, LONG 72°44.2'W. You are steering a course of 284°T at an engine speed of 13.0 knots. At what time would you expect the New Haven Harbor Outer Range to be in line if you have a current setting 112°T at 1.2 knots?
N a. 1318 Y b. 1323 N c. 1328 N d. 1343 15621: What is the length of the trip?
N a. 899.6 miles N b. 878.9 miles Y c. 851.9 miles N d. 726.0 miles 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° 15911: What publication contains information on the navigational hazards in the vicinity of Falkner Island?
N a. The navigational regulations in Title 46 Code of Federal Regulations N b. Inland Navigation Rules N c. U.S. Coast Guard Light List Y d. U.S. Coast Pilot 16063: At 2013, you sight Thimble Shoal Light in line with Old Point Comfort Light bearing 258°pgc. At the time of the bearing, the vessel was headed 142°pgc and 151°psc. Based on this, you __________.
N a. know the gyro error is 2°E N b. should adjust the magnetic compass N c. verified that the variation is 10°W Y d. have checked the deviation table for a magnetic heading of 150° 16069: From your 2118 position, you steer a course of 288°T at an engine speed of 7.0 knots. Visibility is 2 miles. Height of eye is 12 feet (3.7 meters). At what time can you expect to see Old Point Comfort Light?
N a. The light is visible at 2118 N b. 2139 N c. 2201 Y d. 2232 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 16510: At 0728, Race Rock Light is bearing 282°T at 3.8 miles,
and the closest point on Fishers Island is at a radar range of 2.0 miles. What speed have you been making since you changed course at 0705?
N a. 9.2 knots Y b. 9.8 knots N c. 10.6 knots N d. 11.4 knots 16511: At 0728, you change course to 080°T. When steady on course, the standard magnetic compass reads 097°. Which statement is TRUE?
N a. The gyro course is 083°pgc. N b. The magnetic heading is 090°. N c. The deviation is 1.0°E. Y d. The magnetic compass error is 17°W. 16745: At 0100 Race Rock Light bears 001° relative, and at 0110 it bears 000° relative. Based on this you know you __________.
Y a. are being set to the right of the track N b. are making good more than 9.2 knots N c. are making good less than 9.2 knots N d. have an unknown gyro error