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.
218: If there is no current, what is the course per gyro compass from your 1600 position to point A located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"?
N a. 199°pgc N b. 196°pgc Y c. 193°pgc N d. 190°pgc 270: At 0830, you wish to get the latest weather forecasts for the Falkner Island area. On what frequency would you set your FM radio for this information?
N a. 2181 kHz Y b. 162.40 Mhz N c. 156.80 Mhz N d. 156.65 Mhz 282: From your 1752 position, you steer 307°pgc at 9 knots. At 1805, you obtain the visual bearings. What are the latitude and longitude of your 1805 position? Old Pt. Comfort Light 232°pgc. Chesapeake Bay Tunnel North Light 130°pgc.
Y a. LAT 37°05.9'N, LONG 76°08.0'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.9'N, LONG 76°07.7'W N d. LAT 37°06.1'N, LONG 76°07.5'W 307: A vessel at LAT 28°00'N, LONG 116°00'W is to proceed to LAT 34°00'N, LONG 123°40'W. What is the course and distance by mid-latitude sailing?
N a. 323°T, 428 miles N b. 324°T, 453 miles Y c. 312°T, 533 miles N d. 302°T, 539 miles 352: What is the approximate distance to New Bedford, MA, from your 0530 DR position, if your 0352 position was 7 miles from Bridgeport, CT?
N a. 122 miles N b. 115 miles Y c. 104 miles N d. 95 miles 417: A vessel at LAT 21°32'N, LONG 160°30'W, heads for a destination at LAT 30°00'N, LONG 150°00'E. Determine the true course and distance by Mercator sailing.
N a. 273°T, 2645 miles N b. 273°T, 2692 miles Y c. 281°T, 2733 miles N d. 284°T, 2762 miles 453: Determine the great circle distance and initial course from LAT 08°36.0'N, LONG 126°17.0'E to LAT 02°12.0'S, LONG 81°53.0'W.
N a. 9015 miles, 067°T N b. 9076 miles, 067°T N c. 9105 miles, 079°T Y d. 9076 miles, 079°T 462: Determine the great circle distance and initial course from LAT 12°45.2'N, LONG 124°20.1'E to LAT 33°48.8'N, LONG 120°07.0'W.
Y a. 6185.9 miles, 050.3°T N b. 6231.3 miles, 309.7°T N c. 6248.0 miles, 048.3°T N d. 6382.0 miles, 311.7°T 677: Which statement about a great circle track between Cape Flattery (LAT 48°30'N, LONG 125°00'W) and Guam (LAT 14°00'N, LONG 145°00'E) is TRUE? (Use gnomonic tracking chart WOXZC 5270)
N a. The entire track line is to the west of the Northern Hemisphere vertex. Y b. Military exercises being carried out within a 150 mile radius of LAT 47°10'N, LONG 137°30'W will interfere with the proposed track line. N c. Distance is measured by determining the length of a line in minutes of arc from the midpoint of the track to the point of tangency. N d. When plotted on a Mercator chart the great circle track will appear as an S curve with the curve reversing at the latitude of the point of tangency (30°N). 685: What company does NOT have a marine facility along the river bank in Madison Parish (mile 457.0 AHP)?
N a. Complex Chemical Co. N b. Delta Southern Railroads Y c. Baxter Wilson Steam N d. Farm Chemical 809: On 7 November , your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 163°19.0'W. Your vessel is on course 289°T, and your speed is 19.0 knots. Local apparent noon (LAN) occurs at 1138 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'. What is the calculated latitude at LAN?
N a. 27°52.3'N N b. 27°53.4'N N c. 27°55.1'N Y d. 27°57.2'N 1078: On 6 April , your 1830 ZT DR position is LAT 26°33.0'N, LONG 64°31.0'W. You are on course 082°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. NP-0008
N a. LAT 26°49.5'N, LONG 64°06.5'W Y b. LAT 26°32.5'N, LONG 64°27.1'W N c. LAT 26°31.2'N, LONG 64°32.1'W N d. LAT 26°28.7'N, LONG 64°32.1'W 1099: On 6 April , your 0300 DR position is LAT 27°42'S, LONG 128°58'W. You are on course 097°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0029
N a. LAT 27°15.5'S, LONG 128°12.4'W Y b. LAT 27°44.7'S, LONG 127°47.5'W N c. LAT 27°52.4'S, LONG 127°49.4'W N d. LAT 28°15.2'S, LONG 128°11.6'W 1177: On 2 April , your 0900 zone time DR position is LAT 28°04.0'S, LONG 94°14.0'E. Your vessel is on course 316°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1138 N b. 1143 N c. 1146 Y d. 1149 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 1293: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
Y a. Utility crossings N b. Ferry crossings N c. Aerial cable crossings N d. Bridge construction 1837: The Arkansas City Yellow Bend revetment on the LMR extends from mile _________.
Y a. 555.0-549.7 RDB N b. 549.0-548.5 RDB N c. 556.9-554.9 LDB N d. 548.5-546.5 LDB 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 1894: On 22 July , your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 149°T at an observed altitude (Ho) of 12°55.0'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
N a. Hamal N b. Rigel N c. Menkar Y d. Acamar 1924: On 23 September , your 1836 DR position is LAT 25°18'S, LONG 162°23'E. You observe an unidentified star bearing 000°T at an observed altitude (Ho) of 26°18'. The chronometer reads 07h 34m 12s, and is 01m 54s slow. What star did you observe?
N a. Antares N b. Canopus N c. Achernar Y d. Vega 2013: On 28 October , morning twilight will occur around 0524 ZT in LAT 25°25.0'N, LONG 32°33.3'W. Considering their magnitude and location, which group will be the three stars best suited to observe for a star fix at star time?
N a. Sirius, Hamal, Denebola N b. Sirius, Denebola, Dubhe Y c. Sirius, Capella, Denebola N d. Sirius, Mirfak, Hamal 2014: On 16 October , evening twilight will occur at 1746 ZT, and your DR position will be LAT 28°43.2'N, LONG 60°29.8' W. Considering their magnitude and location, which of the following are the three best stars to select for a fix at star time?
Y a. Antares, Arcturus, Polaris N b. Deneb, Polaris, Vega N c. Antares, Deneb, Vega N d. Vega, Polaris, Enif 2016: On 23 March , your 1600 ZT DR position is LAT 27°16.3'N, LONG 156°48.2'W. You are on course 063°T at a speed of 18.0 knots. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
N a. Arcturus, Regulus, Sirius N b. Procyon, Sirius, Capella Y c. Hamal, Rigel, Alphard N d. Betelgeuse, Dubhe, Regulus 2105: You are southeast of Saybrook Breakwater Light passing Saybrook Bar Lighted Bell Buoy "8". This buoy marks __________.
Y a. shoal water N b. a tide rips area N c. the junction with the Connecticut River N d. a sunken wreck 2108: 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 2120: At 1502 ZT, on 4 August , in DR position LAT 11° 21.6' S, LONG 088° 14.3' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 289° psc. The variation is 15° W. What is the deviation?
N a. 1.1°E Y b. 1.1°W N c. 1.9°E N d. 1.9°W 2853: Your vessel is on a course of 343°T at 14 knots. At 2156 a light bears 320.5°T, and at 2217 the light bears 298°T.
At what time and at what distance off will your vessel be when abeam of the light?
Y a. 2232, 3.4 miles N b. 2235, 4.3 miles N c. 2228, 4.9 miles N d. 2241, 6.9 miles 2910: Your vessel is steaming on a course of 140°T at 15 knots. At 1530 a lighthouse bears 200°T. At 1550 it bears 249°T. What is your distance from the lighthouse at 1550?
N a. 1.15 miles N b. 4.60 miles N c. 5.45 miles Y d. 5.75 miles 3312: You have steamed 199 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 410 miles?
N a. 32.6 tons N b. 39.9 tons Y c. 47.4 tons N d. 97.6 tons 4011: 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 234°.
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. 2.5°W N b. 2.5°E N c. 1.0°W Y d. 0.5°E 12206: You sight Bartlett Reef Light (LAT 41°16.5'N, LONG 72°08.2'W) in line with New London Harbor Light (LAT 41°19.0'N, LONG 72°05.4'W) and bearing 059° per standard magnetic compass. What is the compass deviation?
N a. 4°E Y b. 4°W N c. 10°E N d. 10°W 14103: You are approaching Bonneville Lock and Dam and desire lockage. Which call sign should you use to contact the lock?
Y a. WUJ 33 N b. WUJ 34 N c. WUJ 41 N d. WUJ 45 14701: How many nautical miles are between mile 44 and mile 163 on the Columbia River?
N a. 98.6 Y b. 103.4 N c. 119.5 N d. 136.9 15038: At 0705 you obtained the following Loran readings:
9960-X-27091.2
9960-Y-41612.8
9960-Z-58744.2
What is your vessel's position?
N a. 37°20.4'N 75°30.2'W Y b. 37°20.8'N 75°29.9'W N c. 37°21.3'N 75°29.5'W N d. 37°21.2'N 75°30.4'W 15066: If you correct for the current in the preceding question (035°T at 0.5 knot) and maintain an engine speed of 7.5 knots, what is your ETA 0.5 mile south of buoy "W"?
N a. 1016 Y b. 1021 N c. 1026 N d. 1030 15142: At 2146 if your fathometer is set on feet, what should be the approximate reading on your fathometer?
Y a. 88 feet N b. 105 feet N c. 121 feet N d. 166 feet 15266: At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the charted depth of water?
N a. 97 feet (29.4 meters) Y b. 108 feet (32.7 meters) N c. 119 feet (36.1 meters) N d. 125 feet (37.9 meters) 15543: At 2236 Falkner Island Light bears 024° true at a range of 8.6 nm
What was the speed made good along the track line since your 2200 fix?
N a. 12.7 knots Y b. 13.5 knots N c. 13.9 knots N d. 14.2 knots 15745: Your 2239 position is LAT 41°08.5'N, LONG 71°53.3'W. You change course to 315°T, and you maintain RPM's for 9 knots. At 2329 Little Gull Island Light bears 253°T, Race Rock Light bears 309°T, and Watch Hill Point Light bears 058°T. What were the set and drift of the current you experienced from your 2239 position?
N a. 076°T at 0.75 knot N b. 076°T at 0.90 knot N c. 256°T at 0.75 knot Y d. 256°T at 0.90 knot 16114: As you pass through the Chesapeake Bay Bridge and Tunnel,
you sight Trestle "A" in line bearing 198°pgc. What is the gyro error?
N a. 2°E N b. 0°E Y c. 2°W N d. 4°W 16215: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
N a. 079°pgc N b. 081°pgc N c. 085°pgc Y d. 087°pgc 16310: At 0730, your position is LAT 41°10.5'N, LONG 72°32.2'W. From this position you steer course 286°psc with an engine speed of 9.0 knots. What is the approximate depth of water under your keel?
Y a. 52 feet (15.8 meters) N b. 57 feet (17.3 meters) N c. 62 feet (18.8 meters) N d. 67 feet (20.3 meters) 16543: Based on the information in the previous question, what is your ETA at the distress scene?
N a. 0006 N b. 0010 Y c. 0016 N d. 0021 16562: At 1850, you obtain the following bearings and distance:
Block Island North Light 085°T
Watch Hill Light 342°T 5.8 miles
What true speed did you make good between 1830 and 1850?
N a. 2.9 knots N b. 5.7 knots Y c. 8.0 knots N d. 8.7 knots 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 16842: From your 0939 position, you wish to change course in order to pass 0.3 mile north of Buoy "NCA" (LL#375) in the inbound traffic lane. You estimate the current to be 150°
T at 2.0 knots. What course should you steer to make good the desired course? Your speed is still 13.0 knots.
N a. 232°T N b. 235°T Y c. 245°T N d. 249°T