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.
37: 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. 122.0 feet Y b. 67.6 feet N c. 63.6 feet N d. 60.0 feet 203: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears 030°T from your position at a range of approximately 0.5 mile be painted?
N a. Horizontally banded, red over green Y b. Horizontally banded, green over red N c. Vertically striped, red and green N d. Solid green with red letters "BIS" 205: From your 1830 fix, you come left to a course of 290°T. Which of the following statements concerning Watch Hill Light is FALSE?
N a. The nominal range of its white light is 15 miles. N b. It displays both red and white lights. Y c. Its geographic range is 18.5 miles at a 35 foot (10.7 meter) height of eye. N d. Its horn blasts every 30 seconds in fog. 227: At 2037, you change course to make good a course of 016°T. There is no current, but a westerly wind is causing 3° leeway. What course per standard magnetic compass (psc) should you steer to make good the course 016°T?
Y a. 022°psc N b. 025°psc N c. 028°psc N d. 031°psc 412: A vessel steams 1650 miles on course 077°T from LAT 12°47'N, LONG 45°10'E. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 18°54'N, LONG 72°58'E Y b. LAT 18°58'N, LONG 72°52'E N c. LAT 19°02'N, LONG 72°44'E N d. LAT 19°06'N, LONG 72°36'E 420: At 0930, your position is LAT 41°16.5'N, LONG 71°41.4'W, and you are turning for 7 knots. Allowing 3° leeway for southerly winds and estimating the current as 035° at 0.3 knot, what is the course to steer (pgc) to point "B"?
Y a. 096°pgc N b. 094°pgc N c. 091°pgc N d. 089°pgc 441: You get underway at 1030. The wind is out of the SSE and you estimate 3° leeway. What course should you steer per gyrocompass to make good a desired course of 075°T?
Y a. 080°pgc N b. 078°pgc N c. 076°pgc N d. 074°pgc 507: At 0112, you are on course 124°T and turning for 12.0 knots. What course will you make good if the current is 255°T at 1.2 knots?
N a. 118° N b. 120° Y c. 129° N d. 132° 634: You have orders to drop off the empties at the fleeting area at Cairo Point and add five loaded tank barges to your tow. If you are turning for 9 mph and estimate the current at 1.5 mph, what is your ETA at Cairo?
N a. 1031, 22 June Y b. 1423, 22 June N c. 1741, 22 June N d. 2210, 22 June 654: In planning a North Pacific voyage, you wish to steam the minimum distance from LAT 48°30'N, LONG 124°45'W to LAT 44°00'N, LONG 150°00'E, while remaining south of 51°N latitude. Which track meets these requirements? (Use gnomonic tracking chart WOXZC 5270)
N a. A Mercator sailing from departure to the mid-longitude at 51°N, thence great circle to arrival N b. A great circle between departure and arrival with parallel sailing between the longitudes where the great circle intersects 51°N N c. A great circle tangent to 51°N from departure to the mid-longitude then a great circle to arrival Y d. A great circle from departure to LAT 51°N, LONG 148°W, parallel sailing to LAT 51°N, LONG 171°W, then a great circle to arrival 666: You are on a voyage via position LAT 44°00'N, LONG 150°00'E to LAT 46°15'N, LONG 124°00'W. Using gnomonic chart WOXZC 5270, determine which statement is TRUE?
Y a. A composite sailing with a limiting latitude of 51°N will clear the Aleutian Islands. N b. The northern hemisphere vertex is east of the arrival position. N c. The Aleutian Islands are not a navigational hazard on the direct great circle track. N d. The final course angle lies in the northeast quadrant. 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 701: At 1118, on 24 May, you pass Natchez Gage and estimate the current will average 3.0 mph for the remainder of the time on the Mississippi River. What is your ETA at Cairo, IL if you continue to turn for 10 mph?
N a. 0840, 26 May N b. 2218, 26 May N c. 2218, 27 May Y d. 2339, 27 May 733: On 12 March , your 1846 zone time DR position is LONG 129°16.5'W. At that time you observe Polaris with a sextant altitude (hs) of 28°01.5'. The chronometer time of the sight is 03h 44m 10s, and the chronometer error is 01m 55s slow. The index error is 2.2' off the arc, and the height of eye is 59.8 feet (18.2 m). What is your latitude by Polaris?
Y a. 27°33.7'N N b. 27°40.9'N N c. 27°54.4'N N d. 28°06.9'N 821: On 30 August , in DR position LAT 26°34.0'N, LONG 141°36.0'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 09h 15m 26s, and the chronometer error is 00m 00s. The sextant altitude (hs) is 71°41.7'. The index error is 3.2' off the arc, and your height of eye is 49.6 feet. What is the latitude at meridian transit?
Y a. LAT 26°41.9'N N b. LAT 26°44.6'N N c. LAT 26°48.2'N N d. LAT 26°52.3'N 1086: On 15 July , your vessel is enroute from Portland, OR, to Singapore, Malaysia. You are steering course 243°T and making a speed of 16 knots. Your 1845 zone time DR is LAT 27°42.0'N, LONG 167°02.0'E. You observed 3 celestial bodies. Determine the latitude and longitude of your 1945 running fix. NP-0016
Y a. LAT 27°31.1'N, LONG 166°43.0'E N b. LAT 27°38.5'N, LONG 166°45.1'E N c. LAT 27°45.3'N, LONG 166°32.2'E N d. LAT 28°18.1'N, LONG 166°39.8'E 1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)?
Y a. 1145 N b. 1148 N c. 1152 N d. 1156 1302: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 30 feet 1303: On which map would you find Redman Point, Arkansas?
Y a. 20 N b. 38 N c. 45 N d. 60 1366: On which river is New Providence, TN located?
N a. Allegheny N b. Upper Mississippi N c. Ohio Y d. Cumberland 1417: What is the distance from Baton Rouge, LA, to Hickman, KY, on the Mississippi River System?
N a. 117 miles N b. 433 miles N c. 656 miles Y d. 692 miles 1468: On 17 April , your 1516 zone time DR position is LAT 27°24.0'N, LONG 115°24.0'E. At that time, you observe the Sun bearing 247°psc. The chronometer reads 07h 16m 26s, and the chronometer error is 00m 32s slow. The variation is 4.5°E. What is the deviation of the standard compass?
N a. 4.5°W Y b. 5.4°E N c. 6.2°E N d. 6.2°W 1678: On 2 January , your vessel's 1948 zone time position is LAT 21°42'S, LONG 39°12'W, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 260° per standard magnetic compass. Variation in the area is 19°W. The chronometer reads 10h 44m 36s and is 03m 24s slow. What is the deviation of the standard magnetic compass?
Y a. 4.3°E N b. 4.3°W N c. 5.1°E N d. 5.1°W 1689: What daymark will you see as you approach Warnicott Bar Lt. (mile 351.3 AHP)?
N a. Red diamond N b. Red triangle Y c. Green square N d. White square 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 1917: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 054°T at an observed altitude (Ho) of 07°52.1'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. What star did you observe?
N a. Elnath N b. Fomalhaut Y c. Pollux N d. Markab 1951: As you approach Ashland Light (mile 378.1 AHP) which daymark would you see?
Y a. Red triangle N b. Red diamond N c. Green square N d. Green diamond 2006: On 8 November , your 1731 zone time DR position is LAT 27°16.0'N, LONG 137°25.0'W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
Y a. Alphecca, Fomalhaut, Schedar N b. Antares, Rasalhague, Altair N c. Sirius, Hamal, Dubhe N d. Peacock, Ankaa, Al Na'ir 2124: If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?
Y a. 15 miles N b. 12 miles N c. 10 miles N d. 08 miles 2162: On 5 April , at 0509 zone time, morning stars were observed and the vessel's position was LAT 28°32'N, LONG 177°13.0'W. Your vessel is steaming at 19.0 knots on a course of 258°T. A sextant observation of the Sun's lower limb is made at 1021 zone time. The chronometer reads 10h 20m 09s, and the sextant altitude (hs) is 58°06.6'. The index error is 1.0' off the arc, and the chronometer error is 00m 54s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 125.8°T N b. 128.8°T Y c. 129.2°T N d. 130.2°T 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 2586: At 2100 Branford Reef Light bears 347°psc and Falkner Island Light bears 059°psc. You also get a radar range of 5.3 miles from Branford Reef Light. What are your LORAN readings?
N a. 14994.0, 26473.0, 43982.0 N b. 14994.5, 26482.0, 43982.0 Y c. 14996.0, 26477.5, 43981.0 N d. 14997.5, 26479.5, 43981.0 2671: While on a course of 349°T, a light bears 13° on the starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to starboard?
N a. 346°T Y b. 349°T N c. 352°T N d. 355°T 2788: The solid lines extending into the channel at mile 948 AHP are __________.
Y a. dikes N b. revetments N c. spoil areas N d. Meadwestvaco pipeline 3641: You desire to make good a true course of 174°. The variation is 17°W, magnetic compass deviation is 4°W, and gyrocompass error is 4°E. A west-southwest wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 195°psc N b. 197°psc Y c. 199°psc N d. 203°psc 3652: The true course between two points is 023°T. Your gyrocompass has an error of 1°W and you make an allowance of 4° leeway for an east wind. What gyro course should be steered to make the true course good?
N a. 020°pgc N b. 021°pgc N c. 026°pgc Y d. 028°pgc 10601: At 1645 your GPS position is LAT 41°09.2'N, LONG 72°36.9'W. You are steering course 262° per standard magnetic compass at a speed of 12 knots. At 1721 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°07.2'N, LONG 72°44.9'W. What were your set and drift?
N a. 040°T at 0.8 knot Y b. 030°T at 1.7 knots N c. 225°T at 0.9 knot N d. 242°T at 1.1 knots 12612: You are on course 242° per standard magnetic compass (psc) when you take the following bearings: Stratford Point Light 325°psc Old Field Point Light 239°psc Middle Ground Light 270°psc What is your position?
N a. LAT 41°04.4'N, LONG 72°59.5'W Y b. LAT 41°05.1'N, LONG 72°59.3'W N c. LAT 41°05.4'N, LONG 73°00.1'W N d. LAT 41°04.8'N, LONG 73°59.3'W 14303: What is the height above the water of light No. 84 on the Columbia River below Bonneville lock & dam?
N a. 10 feet Y b. 14 feet N c. 18 feet N d. 24 feet 15040: At about what time will you see Chesapeake Light if visibility is exceptionally clear?
Y a. 0729 N b. 0733 N c. 0738 N d. 0742 15138: At 2045 you obtained the following Loran readings:
9960-W-14844.0
9960-X-26128.0
9960-Y-43712.5
What is your vessel's position?
N a. 40°41.1'N, 72°10.5'W N b. 40°41.4'N, 72°10.7'W Y c. 40°41.8'N, 72°10.8'W N d. 40°42.3'N, 72°11.3'W 15168: Which chart provides more detail of Cape Charles harbor and its approaches?
N a. 12238 N b. 12225 Y c. 12224 N d. 12222 15408: From your 1430 fix, you order turns for 8 knots. You steer 045°T and experience no set and drift. At what time would you expect to have New Point Comfort Spit Light "4" abeam?
N a. 1452 Y b. 1458 N c. 1504 N d. 1510 15567: Point Judith Harbor of Refuge __________.
N a. is used mostly by towing vessels N b. has a maximum depth of 14 feet (4.3 meters) at MHW N c. West Gap has a controlling depth of 24 feet Y d. is entered through the East Gap or the West Gap 15641: You will pass through the Race at approximately the time of maximum ebb current. As you APPROACH the Race from New London, you will be set __________.
Y a. to the left of the track line N b. to the right of the track line N c. forward along the track line N d. towards New London along the track line 15660: At 0728, Race Rock Light is bearing 282°T at 3.8 miles,
and the closest point on Fishers Island has a radar range of 2.1 miles. What speed have you been making since you changed course at 0705?
N a. 11.2 knots N b. 10.8 knots Y c. 9.6 knots N d. 9.1 knots 15663: At 0748, you change course to 160°T. Which loran reading will insure you clear Great Eastern Rock?
Y a. Nothing more than 9960-W-14645 N b. Nothing more than 9960-X-25970 N c. Nothing more than 9960-Y-43850 N d. Nothing more than 9960-Y-43960 15715: Little Gull Island Light is __________.
N a. lighted only during daytime when the sound signal is in operation N b. maintained only from May 1 to Oct 1 Y c. lighted throughout 24 hours N d. obscured by trees from 253° to 352° 16113: After you enter Thimble Shoal Channel, you will alter course to pass between Trestle "A" and "B". Which channel should you use?
N a. Thimble Shoal Main Channel or the South Auxiliary Channel N b. Any of the channels but keep to the right hand side Y c. The South Auxiliary Channel N d. Thimble Shoal Main Channel 16445: At 1126 you take the following set of bearings:
Chesapeake Litght bears 142° true
Cape Henry Light bears 225° true.
What was the current encountered since your 1042 fix?
N a. Set 276°, Drift 0.5 knot N b. Set 276°, Drift 0.7 knot N c. Set 096°, Drift 0.5 knot Y d. Set 096°, Drift 0.7 knot 16564: If your height of eye is 45 feet (13.7 meters), what is the approximate geographic range of Block Island North Light?
N a. 7.8 nm N b. 8.9 nm N c. 13.0 nm Y d. 16.7 nm