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.
141: Your vessel is making turns for 9.5 mph and you estimate the average current for the trip will be 2.5 mph. What will be your ETA Donaldsonville, LA?
Y a. 1222 on 7 October N b. 1823 on 7 October N c. 0443 on 8 October N d. 1033 on 8 October 142: As you approach West Memphis Lt. (mile 727.4 AHP) you notice on the map a dashed line crossing the river. This line indicates a __________.
N a. submerged oil pipeline N b. submerged gas pipeline N c. aerial tramway Y d. aerial power line 289: At 1930, you take a fix using the following radar ranges:
York Spit Light - 3.6 miles;
New Point Comfort Spit Light "2" - 2.0 miles;
York Spit Swash Channel Light "3" - 2.5 miles.
Your longitude is __________.
N a. 76°16.2'W N b. 76°16.5'W Y c. 76°16.8'W N d. 76°17.2'W 293: 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?
N a. 3.2 miles N b. 3.0 miles N c. 2.8 miles Y d. 2.6 miles 303: A vessel steams 576 miles on course 260°T from LAT 40°36'N, LONG 50°24'W. What are the latitude and longitude of the point of arrival by mid-latitude sailing?
N a. LAT 39°12'N, LONG 62°28'W N b. LAT 39°06'N, LONG 62°34'W N c. LAT 39°02'N, LONG 62°37'W Y d. LAT 38°56'N, LONG 62°42'W 312: A vessel at LAT 07°05'N, LONG 81°45'W is to proceed to LAT 08°40'N, LONG 88°00'W. What are the course and distance by mid-latitude sailing?
N a. 283.1°T, 381.2 miles Y b. 284.3°T, 384.6 miles N c. 285.6°T, 385.0 miles N d. 286.8°T, 387.4 miles 372: 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. 084°pgc Y b. 080°pgc N c. 076°pgc N d. 072°pgc 413: A vessel steams 1106 miles on course 249°T from LAT 13°30.0'N, LONG 144°30.3'E. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 07°01.0'N, LONG 127°02.0'E Y b. LAT 06°54.0'N, LONG 127°08.0'E N c. LAT 06°50.0'N, LONG 127°13.0'E N d. LAT 06°46.0'N, LONG 127°17.0'E 421: At 0345, you set a course to depart New London Harbor. Assuming no set and drift, which standard magnetic compass course must you steer to stay in the middle of the channel?
N a. 192°psc N b. 190°psc Y c. 187°psc N d. 175°psc 428: At 0730, visibility is 5.5 miles. At what time will you lose sight of Horton Point Light?
N a. It is not visible at 0730 N b. 0733 Y c. 0751 N d. 0812 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.
N a. 6324.2 miles, 310.3°T N b. 6345.3 miles, 301.7°T N c. 6398.0 miles, 298.3°T Y d. 6445.2 miles, 240.3°T 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 494: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. N b. Alter your course to the right. N c. Slow to 8.5 knots. Y d. Alter your course to the left. 494: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. N b. Alter your course to the right. N c. Slow to 8.5 knots. Y d. Alter your course to the left. 565: If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.
N a. 18.0 miles Y b. 15.6 miles N c. 12.8 miles N d. 11.1 miles 569: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
N a. LAT 36°59.8'N, LONG 76°18.0'W Y b. LAT 36°59.5'N, LONG 76°18.4'W N c. LAT 36°59.0'N, LONG 76°19.6'W N d. LAT 36°55.5'N, LONG 76°18.6'W 595: You are passing the Bayou Sara Gage which reads 3.9 feet. The low water reference plane (LWRP) at Bayou Sara is 5.25 feet. Which of the following statements is TRUE?
N a. The river level is above the Low Water Reference Plane. N b. Red Store Landing Revetment is ahead on your starboard side N c. This gage reading is at a lower elevation than the same reading on the Gage at Head of Passes. Y d. None of the above. 598: At 1132, 24 July, you pass Natchez Beam Lt. (mile 364.8 AHP). What is your ETA off the Memphis Gage if you average 8.0 mph?
N a. 2345, 25 July N b. 0525, 26 July Y c. 0947, 26 July N d. 2215, 26 July 624: You are on a voyage from San Diego, CA, to New York, NY. The distance from pilot to pilot is 4860 miles. The speed of advance is 15.0 knots. You estimate 18 hours for bunkering at Colon, and 14 hours for the Panama Canal transit. If you take departure at 0836 hours (ZD +7), 4 July, what is your ETA (ZD +4) at New York?
N a. 0336, 20 July N b. 0036, 19 July N c. 0336, 19 July Y d. 0736, 19 July 752: On 5 May , at 1953 zone time, you take a sextant observation of Polaris. Your vessel's DR position is LAT 29°30.0'N, LONG 66°25.7'W, and your sextant reads 29°07.2'. Your chronometer reads 11h 51m 45s, and your chronometer error is 01m 36s slow. Your height of eye is 56 feet, and the index error for your sextant is 1.5' on the arc. What is the latitude of your vessel from your observation of Polaris?
N a. 29°14.3'N Y b. 29°23.6'N N c. 29°32.3'N N d. 29°38.8'N 808: On 28 July , your 0800 zone time fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1149 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'. What is the calculated latitude at LAN?
N a. 26°21.9'N N b. 26°23.4'N Y c. 26°25.0'N N d. 26°27.7'N 988: On 29 June , your 0800 zone time fix gives you a position of LAT 26°16.0'S, LONG 61°04.0'E. Your vessel is steaming a course of 079°T at a speed of 15.5 knots. An observation of the Sun's upper limb is made at 0905 zone time, and the observed altitude (Ho) is 25°20.1. The chronometer reads 05h 08m 12s, and the chronometer error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) for this sight is 40°44.2'. Determine the vessel's 1200 zone time position.
Y a. LAT 26°02.0'S, LONG 62°05.0'E N b. LAT 26°02.0'S, LONG 62°23.2'E N c. LAT 26°05.1'S, LONG 62°06.3'E N d. LAT 25°56.0'S, LONG 62°03.0'E 1084: On 4 Dec. , your 1500 ZT DR position is LAT 18°06.0'N, LONG 75°42.0'W. You are on course 020°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1548 running fix.
N a. LAT 18°10.3'N, LONG 75°34.5'W N b. LAT 18°12.6'N, LONG 75°42.0'W N c. LAT 18°14.0'N, LONG 75°40.0'W Y d. LAT 18°17.3'N, LONG 75°37.7'W 1093: On 22 Nov. , your vessel is enroute from Accra, Ghana to Montevideo, Uruguay. You are on course 240°T and making a speed of 15.0 knots. Your 1129 DR position is LAT 28°25.0'S, LONG 42°40.0'W. You observed 3 celestial bodies. Determine the latitude and longitude of your 1137 running fix. NP-0023
Y a. LAT 28°27.0'S, LONG 42°38.0'W N b. LAT 28°25.2'S, LONG 42°40.0'W N c. LAT 28°25.0'S, LONG 42°36.0'W N d. LAT 28°23.4'S, LONG 42°42.0'W 1148: You complete changing out your tow and get underway enroute Ark City Tank Storage (mile 554.0 AHP) to deliver the tank barges. What is the distance you must travel from Cairo Point Light?
N a. 202.1 miles Y b. 400.7 miles N c. 554.2 miles N d. 605.8 miles 1198: On 3 October , your 0830 zone time DR position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1201 N b. 1158 N c. 1155 N d. 1152 1229: 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 Y c. Red - Diamond N d. Red - Triangle 1248: What is the distance in river miles, from the new mouth of the White River to the Petroleum Fuel & Terminal Co. (mile 144.6 AHP)?
Y a. 454 miles N b. 427 miles N c. 384 miles N d. 370 miles 1256: On 17 May , your 0300 ZT DR position is LAT 27°21.0'N,
LONG 146°14.0'E. You are on course 107°T at a speed of 18 knots. What will be the zone time of sunrise at your vessel?
N a. 0457 N b. 0511 N c. 0519 Y d. 0522 1769: In order to determine what buoys, if any, are in place at Concordia Bar crossing (mile 596.0 AHP), what should you check?
N a. Bulletin board at the Rosedale Gage N b. Waterways Journal N c. Light List Y d. Notice to Mariners 1952: As you approach Dean Island Light (mile 754.8 AHP), which type of daymark will be observed at the light?
N a. Green triangle Y b. Green diamond N c. Green square N d. Red-and-green banded square 2101: On 2 January , your 1759 zone time DR position is LONG 45°17.6'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 08h 57m 10s, and the chronometer error is 02m 16s slow. The index error is 3.5' on the arc, and the height of eye is 42.5 feet. What is your latitude by Polaris?
N a. 22°50.2'N Y b. 23°18.8N N c. 23°30.2N N d. 24°07.3'N 2180: On 12 April , at 0515 ZT, morning stars were observed, and the vessel's position was determined to be LAT 21°05'S, LONG 16°30'W. Your vessel is steaming at 19 knots on a course of 278°T. A sextant observation of the Sun's lower limb is made at 0930 ZT. The chronometer reads 10h 28m 25s, and the sextant altitude (hs) is 40°15.9'. The index error is 2.5' off the arc, and the chronometer error is 2m 15s slow. Your height of eye on the bridge is 57 feet. What are the intercept (a) and azimuth (Zn) from the assumed position of this sight?
N a. Zn 057.7°, a 15.4' T Y b. Zn 057.0°, a 17.7' A N c. Zn 122.3°, a 17.7' A N d. Zn 123.0°, a 22.7' A 2424: As you approach mile 225 AHP, you notice on the map a brown broken-lined rectangular shaped area along the bank. This indicates __________.
N a. weirs N b. a revetment Y c. a fleeting area N d. utility crossing 2672: While on a course of 283°pgc, a light bears 10° on the port bow at a distance of 8.3 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to port?
N a. 289°pgc N b. 294°pgc Y c. 298°pgc N d. 302°pgc 2690: While on a course of 066°pgc, a light bears 13° on the port bow at a distance of 12.3 miles. What course should you steer to pass 4 miles abeam of the light leaving it to port?
N a. 067°pgc Y b. 072°pgc N c. 079°pgc N d. 085°pgc 2877: Your vessel is steering 263°T at 22 knots. At 0413 a light bears 294°T, and at 0421 the same light bears 312°T. What will be your distance off abeam?
N a. 3.4 miles Y b. 3.7 miles N c. 4.3 miles N d. 4.9 miles 2903: You are steaming on a course of 025°T at 15.5 knots. At 0645 you observe a lighthouse bearing 059°T. At 0655 the same lighthouse bears 075°T. What is your distance off at the second bearing?
N a. 1.5 miles N b. 2.6 miles N c. 4.0 miles Y d. 5.3 miles 2905: You are steaming on a course of 215°T at 14 knots. At 1841 you observe a lighthouse bearing 178°T. At 1904 the same lighthouse bears 156°T. What is your distance off at the second bearing?
N a. 5.4 miles N b. 6.6 miles N c. 7.5 miles Y d. 8.7 miles 2907: You are running coastwise in hazy weather; the visibility improves just before you pass a lighthouse abeam. Your speed is 15 knots, and the lighthouse was abeam at 1015. At 1037 the lighthouse is 4 points abaft the beam. What is your distance off at the second bearing?
N a. 3.9 miles N b. 5.5 miles N c. 6.6 miles Y d. 7.8 miles 3258: You have steamed 525 miles at 16.0 knots, and consumed 105 tons of fuel. If you have 308 tons of usable fuel remaining, how far can you steam at 19 knots?
N a. 920 miles Y b. 1092 miles N c. 1297 miles N d. 2172 miles 4010: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic compass heading of 104°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
N a. 1.8°E N b. 2.6°E Y c. 2.2°W N d. 2.7°W 10509: At 0919 your position is LAT 37°00.0'N, LONG 75°30.0'W. You are on course 270°T at 7.8 knots. At 1035 your position is LAT 37°00.5'N, LONG 75°43.8'W. What was the set and driftt?
N a. 281° at 0.7 knot Y b. 292° at 1.0 knot N c. 305° at 1.3 knots N d. 113° at 1.2 knots 10609: At 1922 your GPS position is LAT 41°04.9'N, LONG 72°42.1'W. You are on course 085° per standard magnetic compass at a speed of 10 knots. At 2019 your GPS position is 1 mile due south of Twenty-Eight Foot Shoal Lighted Buoy "TE". What were your set and drift?
Y a. 343°T at 0.7 knot N b. 340°T at 1.2 knots N c. 164°T at 0.9 knot N d. 161°T at 1.1 knots 10906: What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?
N a. +1.9 feet N b. -0.1 feet Y c. -0.4 feet N d. No correction is necessary 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 15208: At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the course made good between 1730 and 1750?
N a. 072°T N b. 075°T Y c. 078°T N d. 080°T 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 15740: At 2000 Montauk Point Light bears 010°T. At 2030 Montauk Point Light bears 348°T. Assuming that you are making good your course of 046°T and a speed of 9 knots, what is your 2030 running fix position?
N a. LAT 40°53.9'N, LONG 71°51.3'W Y b. LAT 40°54.2'N, LONG 71°50.2'W N c. LAT 40°55.9'N, LONG 71°49.0'W N d. LAT 40°56.7'N, LONG 71°48.1'W 15764: From your 0715 position, you set a course of 085°T. At 0745, you take the following bearings:
Race Rock Light 274°pgc
Watch Hill Point Light 045°pgc
Fisher's Island East Harbor Cupola 006°pgc
What was the current encountered between 0715 and 0745?
N a. Set 030°T, drift 0.4 knot Y b. Set 070°T, drift 0.7 knot N c. Set 210°T, drift 0.8 knot N d. Set 238°T, drift 1.0 knot 16043: As you cross the New Haven Outer Channel range, you observe the range in line bearing 335.5° per gyrocompass. The helmsman reports that he was heading 100° per gyrocompass,
and that the standard magnetic compass read 109° at the time of the observation. What are the gyro error and
deviation of the standard magnetic compass on this heading?
N a. Gyro error 2°E, deviation 3°E N b. Gyro error 0° , deviation 2°W N c. Gyro error 2°W, deviation 9°W Y d. Gyro error 2°W, deviation 3°E 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 16519: As you head toward Great Salt Pond, visibility is unlimited. At what time will you lose sight of Montauk Pt.
Light?
N a. 0905 N b. 0928 N c. 0950 Y d. It will remain visible to Great Salt Pond.