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.
41: The Delta-Friar Point revetment on the LMR extends from mile __________.
N a. 648.5 - 645.5 LDB N b. 652.8 - 649.6 RDB Y c. 657.3 - 652.2 LDB N d. 645.6 - 641.4 RDB 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 82: If the Rosedale Gage reads -0.5 feet, what is the water level in relation to the low water reference plane? The low water reference plane (LWRP) for Rosedale, MS. is 3.0 feet.
Y a. 3.5 foot below the plane N b. 2.5 foot above the plane N c. 0.5 feet above the plane N d. 0.5 feet below the plane 159: You are turning for 6.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
N a. 8.8 mph N b. 8.2 mph Y c. 7.8 mph N d. 6.8 mph 188: At 2020, what is the course to steer to enter the inbound lane of North Chesapeake Entrance traffic separation scheme if a northwesterly wind causes 3° of leeway?
N a. 227°pgc Y b. 221°pgc N c. 218°pgc N d. 215°pgc 261: You must arrive at your final destination by 0800. The distance from your 0300 position to the final destination is 40.5 miles. What minimum speed must be made good to arrive on time?
N a. 9.6 knots N b. 9.3 knots N c. 8.5 knots Y d. 8.1 knots 332: You arrive at the rendezvous point, secure the tow, and head back southward. At 1200, you take the following bearings:
Sand Shoal Inlet South Light bearing 289° pgc
Cape Charles Light bearing 240° pgc
What is your 1200 position?
Y a. LAT 37°15.0'N, LONG 75°37.5'W N b. LAT 37°16.0'N, LONG 75°38.0'W N c. LAT 37°17.0'N, LONG 75°39.5'W N d. LAT 37°19.0'N, LONG 75°40.5'W 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 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 573: Visibility has decreased to 1 mile in haze. At 0948, you take the following radar ranges. What course should you steer from this fix to the York Spit channel between buoys "19" and "20"?
Thimble Shoal Light - 5.9 miles South end of trestle C of the Chesapeake Bay Bridge and Tunnel - 3.8 miles South end of trestle B of the Chesapeake Bay Bridge and Tunnel - 5.4 miles
Y a. 010°pgc N b. 008°pgc N c. 004°pgc N d. 001°pgc 611: At 0600 zone time, on 22 October , you depart Manila, LAT 14°35.0'N, LONG 120°58.0'E (ZD -8). You are bound for Los Angeles, LAT 33°46.0'N, LONG 118°11.0'W, and you estimate your speed of advance at 20.2 knots. The distance is 6,385.9 miles. What is your estimated zone time of arrival at Los Angeles?
Y a. 1808, 3 November N b. 0208, 4 November N c. 1008, 4 November N d. 0208, 5 November 683: 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 N c. Red - Triangle Y d. Red - Diamond 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 806: On 15 November , your 0913 zone time fix gives you a position of LAT 22°30.0'N, LONG 68°28.0'W. Your vessel is on course 164°T, and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1118 zone time at which time meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 49°46.0'. What is the calculated latitude at LAN?
N a. 21°36.1'N N b. 21°37.7'N Y c. 21°39.3'N N d. 21°40.9'N 998: On 23 May , your 0628 zone time position was LAT 28°18.0'S, LONG 102°42.0'E. Your vessel was steaming on course 040°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0758 ZT. The chronometer read 01h 02m 06s and was fast 04m 04s. The observed altitude (Ho) was 13°16.7'. LAN occurred at 1201 zone time. The observed altitude (Ho) was 42°32.0'. What was the longitude of your 1201 zone time running fix?
N a. 103°57.9'E N b. 104°00.4'E Y c. 104°03.5'E N d. 104°06.3'E 1008: On 27 March , your 0730 zone time position is LAT 28°16'N, LONG 56°37'W. Your vessel is on course 158°T at a speed of 15.0 knots. An observation of the Sun's lower limb is made at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer error is 00m 53s slow. The observed altitude (Ho) is 45°10.7'. LAN occurs at 1150 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) is 65°32.8'. Determine the vessel's 1200 zone time position.
Y a. LAT 27°08.8'N, LONG 56°04.2'W N b. LAT 27°08.8'N, LONG 56°10.3'W N c. LAT 27°11.6'N, LONG 56°04.2'W N d. LAT 27°11.6'N, LONG 56°10.3'W 1096: On 24 October , your 0100 DR position is LAT 27°42'N, LONG 158°35'E. You are on course 085°T at a speed of 12 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0700 running fix. NP-0026
N a. LAT 27°48.8'N, LONG 160°12.5'E N b. LAT 27°52.5'N, LONG 160°18.2'E Y c. LAT 27°56.0'N, LONG 159°47.3'E N d. LAT 27°58.4'N, LONG 159°43.5'E 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 1225: You estimate the current at 2.0 mph. What is the speed over the ground?
N a. 9.5 mph Y b. 5.5 mph N c. 5.0 mph N d. 4.5 mph 1296: At which of the following times would you be able to listen to lower Mississippi River conditions on VHF Channel 22?
N a. 0900 hours N b. 1100 hours N c. 1200 hours Y d. 1300 hours 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 1543: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads -3.6 feet. If the highest point on your vessel is 62 ft. above the water, what is your vertical clearance?
N a. 60.0 feet N b. 63.6 feet Y c. 67.6 feet N d. 122.0 feet 1765: The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1530, 5 January, and last for six hours. What minimum speed over the ground must you make from Red River Landing Gage in order not to be delayed?
Y a. 6.2 mph N b. 6.4 mph N c. 6.8 mph N d. 7.3 mph 1773: What daymark should you see as you approach French Point Light (mile 915.4 AHP)?
Y a. Red triangle N b. Green triangle N c. Red diamond N d. Green diamond 1875: 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 68°03.6' bearing 154°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?
Y a. Alpha Indi N b. Epsilon Cygni N c. Gamma Aquilae N d. Albireo 2022: On 24 August , your vessel is enroute from Perth, Australia, to Bombay, India. Evening twilight will occur at 1807 zone time, and your vessel's DR position for this time will be LAT 27°17.0'S, LONG 83°17.0'E. Considering their magnitude and location, what are the three stars best suited to observe for a fix at star time?
N a. Arcturus, Antares, Atria Y b. Spica, Altair, Acrux N c. Pollux, Canopus, Hamal N d. Rasalhague, Spica, Kochab 2031: After passing Wilkinson Lt. (mile 310.0 AHP) you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations N c. keep as close to the right descending bank as safety permits Y d. keep as close to the left descending bank as safety permits 2286: You observe the lower limb of the Sun at a sextant altitude (hs) of 50°26.9' on 9 November . The index error is 1.5' on the arc. The height of eye is 56 feet (17 meters). What is the observed altitude (Ho)?
N a. 50°04.2' N b. 50°18.1' Y c. 50°33.5' N d. 50°41.4' 2341: You have steamed 1175 miles at 19 knots, and consumed 257 tons of fuel. If you have to steam 1341 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots?
N a. 293 tons Y b. 263 tons N c. 202 tons N d. 172 tons 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 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 2882: Your vessel is steering 096°T at 17 knots. At 1847 a light bears 057°T, and at 1916 the same light bears 033°T. What will be your distance off abeam?
N a. 9.9 miles N b. 10.7 miles Y c. 11.4 miles N d. 11.9 miles 3051: The propeller on a vessel has a diameter of 20.6 feet and a pitch of 23.4 feet. What would be the apparent slip if the vessel cruised 538 miles in a 24 hour day (observed distance) at an average RPM of 87?
Y a. -11.6% N b. +11.6% N c. -10.3% N d. +10.3% 3279: While steaming at 15.0 knots, your vessel consumes 326 barrels of fuel oil per day. In order to reduce consumption to 178 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 8.1 knots N b. 8.5 knots N c. 11.1 knots Y d. 12.2 knots 3311: You have steamed 162 miles and consumed 14.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 285 miles?
Y a. 24.6 tons N b. 34.7 tons N c. 43.3 tons N d. 54.8 tons 3616: You desire to make good a true course of 046°. The variation is 6°E, magnetic compass deviation is 12°W, and the gyrocompass error is 3°W. A northerly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make good the true course?
Y a. 047°psc N b. 049°psc N c. 052°psc N d. 057°psc 3651: The true course between two points is 337°. Your gyrocompass has an error of 3°E and you make an allowance of 5° leeway for a west wind. Which gyro course should be steered to make the true course good?
Y a. 329°pgc N b. 335°pgc N c. 339°pgc N d. 345°pgc 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 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° 11501: At 2016 your GPS position is LAT 41°07.6'N, LONG 71°33.8'W. At 2128 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions?
N a. 11.9 knots N b. 10.2 knots N c. 8.9 knots Y d. 6.7 knots 12610: You are on course 061° per standard magnetic compass when you take the following bearings: Bartlett Reef Light 070°psc Saybrook Breakwater Light 010°psc Horton Pt. Light 218°psc What is your position?
N a. LAT 41°10.4'N, LONG 72°19.6'W Y b. LAT 41°11.2'N, LONG 72°20.6'W N c. LAT 41°13.7'N, LONG 72°23.9'W N d. LAT 41°15.4'N, LONG 72°24.3'W 15043: At 0811 your vessel's position is 37°04.9'N, 75°39.7'W. You are steering a course of 220° true at a speed of 14.0 knots. At what time would you expect the buoys in the northeasterly traffic scheme to line up, if you do not correct for a southwesterly current of 1.8 knots?
N a. 0826 N b. 0831 Y c. 0837 N d. 0846 15269: New London Harbor is __________.
Y a. limited to vessels drawing less than 36 feet (10.8 meters) N b. closed during the winter season N c. subject to dangerous freshets in the fall N d. difficult to enter at night 15520: NOAA VHF-FM weather broadcasts from New London, CT are on __________.
N a. 162.25 MHz N b. 162.30 MHz N c. 162.40 MHz Y d. 162.55 MHz 15619: At 2123, your position is LAT 37°20.0'N, LONG 76°03.0'W. What is your distance offshore of Savage Neck?
N a. 4.3 miles N b. 3.4 miles N c. 2.6 miles Y d. 1.7 miles 15657: What was the course made good from 0630 to 0654?
N a. 078°T Y b. 082°T N c. 086°T N d. 090°T 15819: You must arrive at your final destination by 0800. The distance from your 0300 position to the final destination is 40.5 miles. What minimum speed must be made good to arrive on time?
Y a. 8.1 knots N b. 8.5 knots N c. 9.3 knots N d. 9.6 knots 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° 15967: At 1925, you take a fix using the following radar ranges:
York Spit Light - 3.4 miles away;
New Point Comfort Spit Light "2" - 2.1 miles away;
York Spit Swash Channel Light "3" - 2.7 miles away. Your longitude is __________.
Y a. 76°16.6'W N b. 76°16.8'W N c. 76°17.0'W N d. 76°17.2'W 16320: Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?
N a. 007°psc N b. 014°psc Y c. 021°psc N d. 026°psc 16369: As you pass between Trestle B and Trestle C of the Chesapeake Bay Bridge - Tunnel, you sight along Trestle C when it is in line. The gyro bearing is 051°. What is the gyro error by observation?
N a. 4°E N b. 2°E N c. 0° Y d. 2°W 16615: At 0112, the radar range to Branford Reef Light is 2.9 miles. At 0125, the range is 3.6 miles. What is the position of your 0125 running fix if you are steering 124°T at 12 knots?
Y a. LAT 41°09.7'N, LONG 72°48.1'W N b. LAT 41°09.7'N, LONG 72°48.7'W N c. LAT 41°09.8'N, LONG 72°47.2'W N d. LAT 41°10.2'N, LONG 72°47.7'W 16841: At 0907 you change course to 224°T, and your speed is now 13.0 knots. At 0939 Chesapeake Light is bearing 168°T at a distance of 7.1 miles, and Cape Henry Light is bearing 246°T. What were the set and drift since 0907?
N a. 326°T at 0.7 knot N b. 326°T at 1.4 knots Y c. 146°T at 1.4 knots N d. 146°T at 0.7 knots