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.
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 105: On 19 January , your 0300 zone time DR position is LAT 22°13'N, LONG 40°19'W. You are on course 297°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0545 running fix?
Y a. LAT 22°29.0'N, LONG 41°06.5'W N b. LAT 22°30.3'N, LONG 41°00.2'W N c. LAT 22°31.1'N, LONG 42°58.6'W N d. LAT 22°33.0'N, LONG 42°55.9'W 154: You see a buoy with red and green bands. This buoy marks __________.
N a. the center of the channel Y b. the preferred channel N c. a channel crossing N d. an isolated danger 236: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 3° leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 109°psc N b. 112°psc Y c. 115°psc N d. 118°psc 254: At 0130, you obtain the following radar ranges:
Horton Point Light - 4.3 miles;
Mattituck Breakwater Light - 3.45 miles;
Duck Pond Point - 2.0 miles.
What were the course and speed made good between 0100 and 0130?
N a. 236°T at 9.4 knots Y b. 246°T at 9.8 knots N c. 259°T at 9.8 knots N d. 267°T at 9.4 knots 425: 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?
N a. 67 feet (20.3 meters) N b. 62 feet (18.8 meters) N c. 57 feet (17.3 meters) Y d. 52 feet (15.8 meters) 454: Determine the great circle distance and initial course from LAT 26°00.0'S, LONG 56°00.0'W to LAT 34°00.0'S, LONG 18°15.0'E.
N a. 3705 miles, 153°T N b. 3841 miles, 068°T N c. 3849 miles, 248°T Y d. 3805 miles, 117°T 505: At 0109 you get underway, and at 0112 you take the following bearings:
Branford Reef Light bearing 051° true
Stratford Point Light bearing 258° true
What is your 0112 position?
N a. LAT 41°11.0'N, LONG 72°51.0'W Y b. LAT 41°11.4'N, LONG 72°51.3'W N c. LAT 41°11.6'N, LONG 72°51.6'W N d. LAT 41°11.8'N, LONG 72°51.8'W 535: You depart LAT 49°38'N, LONG 152°49'E, for LAT 49°38'N, LONG 176°12'E. What are the course and distance by parallel sailing?
Y a. 090°T, 909 miles N b. 090°T, 1204 miles N c. 270°T, 909 miles N d. 270°T, 1204 miles 619: Your vessel departs Montevideo, Uruguay, LAT 34°40.3'S, LONG 54°09.1'W (ZD +4), at 1800 zone time, on 15 October . It is bound for New York, LAT 40°27.5'N, LONG 73°49.9'W (ZD +5). The distance is 5,749 miles, and you expect to average 20 knots. What is your estimated zone time of arrival?
N a. 0427, 26 October N b. 1627, 26 October Y c. 1627, 27 October N d. 0427, 27 October 706: The solid lines extending into the channel at mile 948 AHP are __________.
N a. revetments Y b. dikes N c. spoil areas N d. Westvaco Service Facilities 741: On 16 February , your 1845 ZT DR position is LAT 25°50.5'N, LONG 46°24.0'W. At that time you observe Polaris with a sextant altitude (hs) of 26°25.5'. The chronometer time of the sight is 09h 47m 30s and the chronometer error is 02m 16s fast. The index error is 2.5' off the arc, and the height of eye is 55.0 feet. What is your latitude by Polaris?
Y a. 25°38.0'N N b. 25°44.2'N N c. 26°00.1'N N d. 26°37.5'N 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 1137: What is the length of the trip?
N a. 1195.4 miles N b. 1223.1 miles N c. 1464.8 miles Y d. 1520.1 miles 1141: Which daymark will you see as you approach Natchez Beam Lt. (mile 364.8 AHP)?
Y a. Red triangle N b. White square N c. Green square N d. Red diamond 1470: On 1 March , your 2135 zone time DR position is LAT 23°54.0'N, LONG 63°22.0'W. At that time, you observe Schedar bearing 328°psc. The chronometer reads 01h 35m 16s, and the chronometer error is 00m 07s slow. The variation is 3.5°E. What is the deviation of the standard compass?
N a. 2.3°E N b. 2.5°W Y c. 3.2°W N d. 4.2°E 1643: Which facility is located on the right descending bank at mile 363.6 AHP?
N a. River Cement Corps.. N b. Bunge Corps.. N c. T.L. James Y d. Vidalia Dock and Storage Co. 1831: You pass Warnicott Bar Lt. at 1146, 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 Y c. 1528, 26 May N d. 0909, 27 May 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 1883: On 13 June , your 0445 DR position is LAT 20°12.0'N, LONG 44°45.0'W. You observe an unidentified star bearing 168°T at an observed altitude (Ho) of 38°56.0'. The chronometer reads 07h 43m 20s, and is 01m 39s slow. Which star did you observe?
N a. Peacock N b. Ankaa N c. Al Na'ir Y d. Fomalhaut 1887: On 8 April , your evening DR position is LAT 22°16.0'N, LONG 157°58.3'W. You observe an unidentified star bearing 271°T at an observed altitude (Ho) of 44°08.2'. The chronometer reads 05h 09m 57s, and is 01m 23s slow. What star did you observe?
N a. Betelgeuse Y b. Aldebaran N c. Alnilam N d. Bellatrix 1908: On 22 March , your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 315°T at an observed altitude (Ho) of 66°01.2'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. What star did you observe?
N a. Regulus N b. Menkar Y c. Rigel N d. Alphard 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 2061: As you approach mile 225 AHP, you notice on the map a black broken line crossing the river at mile 224.2 AHP. This line indicates __________.
N a. ferry crossing N b. submarine crossing N c. gas pipelines Y d. power lines 2102: Sounding contours in unshaded water areas are at what interval?
N a. 10 foot up to 100 ft depths then at 30 foot intervals Y b. 30 foot intervals up to 180 feet N c. 10 fathom intervals N d. The interval will vary to ensure any major underwater hazard is highlighted. 2152: On 25 June , at 0612 zone time, morning stars were observed, and the vessel's position was determined to be LAT 28°13.0'S, LONG 49°34.0'E. Your vessel is steaming at 17.0 knots on a course of 066°T. A sextant observation of the Sun's lower limb is made at 1022 zone time. The chronometer reads 07h 19m 17s, and the sextant altitude is 35°26.3'. The index error is 1.5' on the arc, and the chronometer error is 02m 51s slow. Your height of eye on the bridge is 58.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 021.5°T N b. 157.5°T N c. 201.5°T N d. 338.5°T 2248: Which company does NOT have a marine facility in Rosedale Harbor (mile 585 AHP)?
Y a. T.L. James N b. Rosedale-Boliver County Port Commission N c. Cives Steel Company N d. Sanders Elevator Corp 2674: You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?
Y a. 136° N b. 133° N c. 122° N d. 119° 2781: Your engine speed is 9.8 mph and you estimate the current at 1.6 mph. What is your speed over the ground?
N a. 11.0 mph N b. 9.8 mph N c. 8.6 mph Y d. 8.2 mph 2782: What is your ETA at the Helena Highway Bridge?
Y a. 1335, 24 Sept N b. 1109, 24 Sept N c. 0926, 24 Sept N d. 0458, 24 Sept 2900: You are steaming on a course of 167°T at 19.5 knots. At 1837 you observe a lighthouse bearing 224°T. At 1904 the lighthouse bears 268°T. What is your distance off at the second bearing?
N a. 8.8 miles N b. 9.5 miles Y c. 10.4 miles N d. 11.3 miles 2911: 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 3098: If the pitch of the propeller is 21.2 feet, and the revolutions per day are 93,660, calculate the day's run allowing 5% positive slip.
N a. 163.3 miles N b. 217.8 miles Y c. 310.3 miles N d. 342.9 miles 3612: Your vessel is steering 195° per standard magnetic compass. Variation for the area is 13°W, and the deviation is 4°E. The wind is from the west-southwest, producing a 2° leeway. Which true course are you making good?
N a. 178°T N b. 180°T N c. 182°T Y d. 184°T 4016: 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 004°.
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. 1.5°W N b. 0.5°W N c. 0.0° Y 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 11105: What is the height of the tide at Great Salt Pond on Block Island at the afternoon high water (daylight savings time) on 1 July 1983?
N a. 3.9 feet N b. 3.0 feet N c. 2.4 feet Y d. 2.1 feet 11300: At 1256 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. At 1336 your position is LAT 37°07.5'N, LONG 75°39.1'W. What was the speed made good between the fixes?
N a. 14.6 knots N b. 15.2 knots Y c. 16.0 knots N d. 18.6 knots 12604: You are on course 082° per standard magnetic compass (psc) when you take the following bearings: New London Ledge Light - 036.5°psc Little Gull Island Light - 157.0°psc Saybrook Break Water Light - 294.5°psc What is your position?
N a. LAT 41°02.3'N, LONG 72°04.5'W N b. LAT 41°09.5'N, LONG 72°07.1'W Y c. LAT 41°13.6'N, LONG 72°07.5'W N d. LAT 41°14.1'N, LONG 72°12.8'W 13410: You plan to anchor your vessel at LAT 41°05.1'N, LONG 72°59.3'W. Assuming that normal conditions exist, how much anchor cable should you put out?
N a. 150 to 300 feet N b. 300 to 440 feet Y c. 440 to 600 feet N d. 640 to 750 feet 13505: What soundings are indicated by a blue tint on this chart?
N a. 30 fathoms or more Y b. 30 feet or less N c. 30 feet or more N d. 30 fathoms or less 15060: At 0802, the radar range and bearing to Branford Reef Light are 350°pgc at 0.8 mile, and the north point of Falkner Island are 090°pgc at 6.7 miles. What were the set and drift that you encountered since 0740?
N a. Set 085°T, drift .2 knot Y b. Set 085°T, drift .6 knot N c. Set 265°T, drift .2 knot N d. Set 265°T, drift .6 knot 15270: The distance from New London to the east entrance of the Cape Cod Canal is __________.
N a. 66 miles N b. 77 miles Y c. 89 miles N d. 136 miles 15411: From your 1830 fix, you continue south on a course of 150°T turning RPMs for 6 knots. You encounter a flood current in the direction of 330°T at 2 knots. Adjusting your course for set and drift, which course would you steer to make good a course of 150°T while turning RPMs for 6 knots?
N a. 144°T Y b. 150°T N c. 158°T N d. 162°T 15446: You are abeam of buoy "18" at 2325. What is your ETA at Baltimore if you average 9.5 knots?
N a. 1342 Y b. 1400 N c. 1424 N d. 1456 15463: If you are making 10 knots, what is your ETA at York Spit Channel Buoys "19" and "20"?
N a. 0959 N b. 1002 Y c. 1006 N d. 1011 15815: From your 0130 position, you take the following radar ranges:
Mattituck Inlet Light @ 4.6 nm
Falkner Island Light @ 10.75
What is the latitude and longitude of the fix?
N a. LAT 41°00.8'N, LONG 72°40.8'W N b. LAT 41°01.2'N, LONG 72°40.4'W N c. LAT 41°01.6'N, LONG 72°40.0'W Y d. LAT 41°02.0'N, LONG 72°39.5'W 15860: At 0100, your position is LAT 41°05.3 N, LONG 72°29.2 W. You head for the position one mile north of Mattituck Inlet Light and turn to make good 9.0 knots. If the visibility is about 2 miles, at what approximate time will you sight the light?
N a. The light is visible at 0100 N b. 0109 Y c. 0120 N d. 0128 15917: At what approximate distance would you expect Bartlett Reef Light to break the horizon, if the visibility is 27 nautical miles?
N a. 5.9 nm N b. 6.9 nm N c. 12.0 nm Y d. 12.8 nm 15939: From your 1910 position, you set a course of 162°T at a speed of 14 knots. What will serve as a definite warning that you are being set towards Race Rock Light?
N a. Decreasing bearings to Race Rock Light Y b. Decreasing loran readings on loran rate 9960-W N c. Increasing soundings N d. Decreasing radar ranges to Race Point 16112: At 0530, the Coast Guard announces that Chesapeake Channel is closed indefinitely due to a collision occurring in the channel between Trestle "B" and "C" of the Chesapeake Bay Bridge and Tunnel. You exit York Spit Channel, leaving buoy "20" abeam to port at 0.1 mile, and alter course to leave Horseshoe Crossing Lighted Bell Buoy abeam to port at 0.2 mile. What is the course per gyrocompass?
N a. 185°pgc N b. 187°pgc N c. 190°pgc Y d. 193°pgc 16144: From your 2027 position you change course to 106°T, while maintaining an engine speed of 18 knots. Your ETA at a position where Block Island Sound South Entrance Obstruction Lighted Buoy "BIS" is abeam is __________.
N a. 2039 N b. 2043 N c. 2047 Y d. 2050 16368: Why should mariners use extreme care when navigating within the precautionary area centered on Chesapeake Bay Entrance Junction Lighted Gong Buoy CBJ?
N a. There are numerous underwater obstructions that are a hazard to vessels with drafts exceeding 2 meters (6.5 feet). N b. Fishing vessels of limited maneuverability routinely operate in this area when hunting oyster and crabs. Y c. Vessels may approach from different directions from the inbound separation lanes and from Chesapeake and Thimble Shoal Channel. N d. Large naval vessels having the right of way often enter the area when bound to or from the Norfolk Naval Base. 16715: From your 0600 position, what is the course per gyrocompass to leave Watch Hill Light abeam to starboard at 2.0 miles if a southerly wind is producing 3° of leeway?
Y a. 252°pgc N b. 256°pgc N c. 258°pgc N d. 262°pgc 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