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.
46: At 2342, on 25 August, you pass under the Helena Highway Bridge (mile 661.7 AHP). What has been the average speed of the current since departing Memphis Harbor, McKellar Lake, if you have been making turns for 9 mph?
N a. 5.6 mph N b. 4.4 mph N c. 2.1 mph Y d. 1.8 mph 100: Which of the following statements concerning the buoys on the Mississippi River is TRUE?
Y a. Buoy locations may be changed to indicate the channel for the existing river stage. N b. The buoys are maintained on station year round. N c. Buoys have permanent moorings on the river bottom and will not shift position. N d. The position of river buoys can be determined by consulting the latest Light List - Vol. V. 117: At 0645, on the 17th of April, you pass Hole in the Wall Lt. (mile 373.4 AHP). What has been your average speed since departing the Exxon Refinery?
N a. 5.8 mph Y b. 6.3 mph N c. 6.7 mph N d. 7.1 mph 186: Assume set and drift have no effect on your vessel. If you change course to 187°pgc from your 1950 position, how close will you pass Cape Charles Lighted Bell Buoy "14"?
N a. 0.1 mile N b. 0.5 mile N c. 0.8 mile Y d. 1.1 miles 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 263: 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 N c. 2.0°E Y d. 2.0°W 408: You depart LAT 37°36'N, LONG 123°00'W, and steam 2022 miles on course 241°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 163°28.2'W N b. LONG 163°18.2'W Y c. LONG 156°51.7'W N d. LONG 154°18.3'W 465: Determine the great circle distance and initial course from LAT 34°51.0'N, LONG 115°01.2'E to LAT 10°16.0'S, LONG 51°42.6'E.
N a. 4436 miles, 245.3°T N b. 4598 miles, 245.6°T Y c. 4493 miles, 245.6°T N d. 4582 miles, 245.6°T 470: Determine the great circle distance and initial course from LAT 35°08.0'S, LONG 19°26.0'E to LAT 33°16.0'S, LONG 115°36.0'E.
N a. 4457 miles, 126°T Y b. 4559 miles, 121°T N c. 4682 miles, 059°T N d. 4688 miles, 126°T 579: Which loran line of position will serve as a danger reading on the loran to keep you west of the submerged obstruction at LAT 37°24.2'N, LONG 76°03.7'W, after you leave York Spit Channel?
Y a. Not less than 9960-X-27246 N b. Not more than 9960-Y-41595 N c. Not less than 9960-Y-41595 N d. Not less than 9960-Z-58622 603: At 0915 zone time, on 7 November , you depart Seattle, LAT 47°36.0'N, LONG 122°22.0'W (ZD +8). You are bound for Kobe, LAT 34°40.0'N, LONG 135°12.0'E, and you estimate your speed of advance at 18.5 knots. The distance is 4,527 miles. What is your estimated zone time of arrival at Kobe?
N a. 1257, 17 November Y b. 0657, 18 November N c. 1857, 18 November N d. 0657, 19 November 618: Your vessel departs Seattle at 1010 zone time (ZD +8), on 28 May, bound for Apra, Guam (ZD -10). The distance by great circle is 4,948 miles, and you estimate that you will average 18.5 knots. What is your estimated zone time of arrival?
Y a. 0737, 9 June N b. 1737, 9 June N c. 1937, 9 June N d. 0737, 10 June 631: From your 0100 position, you change course to 258° per standard magnetic compass. Your engine speed is 10.0 knots. A short time later, your fathometer reads 51 feet (15.5 meters) under the keel. What is the water depth?
N a. 38.5 feet (11.7 meters) N b. 43.5 feet (13.2 meters) N c. 51.0 feet (15.5 meters) Y d. 59.5 feet (18.0 meters) 652: On a voyage via the southern tip of Nova Scotia (LAT 43°20'N, LONG 65°35'W) you wish to sail the shortest route to La Coruna, Spain (LAT 43°20'N, LONG 8°24'W). Which of the following will require you to plot a composite sailing? (Use gnomonic tracking chart WOXZC 5274)
N a. Shoals extending 15 miles from Sable Island N b. Sea ice reported 68 miles ESE of St. John's, Newfoundland Y c. Icebergs reported extending west to west-northwest from LAT 47°00'N, LONG 35°00'W N d. Naval exercises using live ammunition being conducted within a 150 mile radius of LAT 49°00'N, LONG 20°00'W 820: On 15 March , in DR position LAT 21°42.0'N, LONG 55°26.0'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 04h 02m 40s, and the chronometer error is 02m 24s fast. The sextant altitude (hs) is 66°15.6'. The index error is 2.8' on the arc, and your height of eye is 56 feet. What is the latitude at meridian transit?
N a. 21°12.0'N N b. 21°18.0'N N c. 21°24.4'N Y d. 21°32.0'N 846: On 22 February , your 0612 zone time fix gives you a position of LAT 27°16.2'S, LONG 37°41.6'W. Your vessel is on course 298°T, and your speed is 14.2 knots. Local apparent noon (LAN) occurs at 1147 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 73°33.3'. What is the calculated latitude at LAN?
Y a. 26°31.4'S N b. 26°29.5'S N c. 26°27.1'S N d. 26°24.8'S 1092: On 3 April , your vessel's 1400 ZT DR position is LAT 20°08.0'N, LONG 147°45.0'W. You are steering course 023°T at 18.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. NP-0022
N a. LAT 21°39.8'N, LONG 146°59.7'W Y b. LAT 21°40.0'N, LONG 147°03.2'W N c. LAT 21°41.8'N, LONG 147°05.5'W N d. LAT 21°41.8'N, LONG 147°01.5'W 1165: Which of the following statements concerning the buoys on the Mississippi River is TRUE?
N a. The position of river buoys can be determined by consulting the latest Light List - Vol. V. N b. A preferred channel mark is a lateral mark indicating a channel junction which must always be passed to starboard. N c. Buoys should be passed as close as possible. Y d. Setting a buoy is the act of placing a buoy on assigned position in the water. 1228: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads 8.9 ft. If the highest point on your vessel is 54 ft. above the water, what is your vertical clearance?
Y a. 63.1 feet N b. 65.3 feet N c. 67.2 feet N d. 122.0 feet 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 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 1415: The highest point on your towboat is 52 feet above the water, and the Helena Gage reads +9.6 feet. What will be the vertical clearance when you pass under the A-span of the Helena Highway Bridge?
N a. 49.8 feet N b. 53.9 feet Y c. 57.8 feet N d. 73.1 feet 1737: At 1227, on 19 October, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 1045 the following day?
N a. 5.2 mph N b. 5.6 mph Y c. 5.9 mph N d. 6.3 mph 1745: What is the distance in river miles, from the mouth of the Yazoo Diversion Canal to the RR and Hwy bridge at Baton Rouge, LA?
N a. 365 miles N b. 310 miles N c. 265 miles Y d. 203 miles 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 2205: What are the dimensions of Old River Lock, on the Lower Mississippi River?
N a. 1202 feet x 84 feet Y b. 1190 feet x 75 feet N c. 760 feet x 75 feet N d. 425 feet x 75 feet 2908: Your vessel is on a course of 223°T at 17 knots. At 1323 a lighthouse bears 318° relative. At 1341 the same lighthouse bears 287° relative. What is your distance off the lighthouse at 1341?
N a. 4.3 miles N b. 5.1 miles Y c. 6.6 miles N d. 7.8 miles 3603: You are steering 318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E and the deviation table is extracted below. What will be the true course made good?
DEVIATION TABLE
MAG HDG DEV
300° 2°E
315° 0°
330° 2°W
N a. 301°T N b. 303°T N c. 327°T Y d. 329°T 10301: Determine the course per standard magnetic compass from Cerberus Shoal Buoy 9 (LAT 41°10.4'N, LONG 71°57.1'W) to the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W).
N a. 030°psc N b. 036°psc Y c. 059°psc N d. 067°psc 11907: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 130° at 1.2 knots, and a southerly wind causes 3° of leeway?
N a. 112°T Y b. 108°T N c. 105°T N d. 102°T 12701: You are on course 298° per standard magnetic compass when you take the following bearings: Block Island Southeast Point Light - 058°psc Block Island Aero Beacon - 005°psc Montauk Point Light - 268°psc What is your position?
N a. LAT 41°08.3'N, LONG 71°35.0'W Y b. LAT 41°08.2'N, LONG 71°34.4'W N c. LAT 41°08.1'N, LONG 71°33.8'W N d. LAT 41°08.0'N, LONG 71°34.1'W 13306: In the northern quadrant of the circle surrounding Chesapeake Bay Entrance Junction Buoy CBJ the number 20 over a bracket appears 5 times. What do these indicate?
N a. Markers or piles are 20 feet above mean low water. N b. The maximum draft permitted in this area is 20 feet. Y c. Obstructions have been cleared by a wire drag to 20 feet. N d. Bench marks used to measure channel depths while dredging. 13707: The level of mean high water at Old Point Comfort is how many feet above the sounding datum?
N a. 1.5 feet N b. 2.2 feet Y c. 2.5 feet N d. 3.5 feet 14101: What signal is given by air horn to indicate that Bonneville Lock is ready for entrance?
N a. two long blasts N b. two short blasts N c. one short blast Y d. one long blast 15023: At 1042, on 16 March, you are passing the Vicksburg Gage (mile 437.0 AHP). What has been the average current since 0630, 15 March, if you have been making turns for 8.0 mph?
N a. 0.2 mph N b. 0.5 mph Y c. 0.8 mph N d. 1.2 mph 15143: From your 2146 position, with a new engine speed of 12 knots, you wish to change course in order to pass southeast of Buoy "MP" at a distance of 2 miles. With a reported set of 320° true and a drift of 2 knots, which course should you steer to make good your desired course?
N a. 055°true Y b. 061°true N c. 066° true N d. 071°true 15356: You are on course 092°T, and the engines are turning for 8 knots. At 0452, you take the following bearings:
Stratford Point Light 020°pgc
Stratford Shoal (Middle Ground) Light 141°pgc
What is your 0452 position?
N a. LAT 41°05.4'N, LONG 73°07.7'W Y b. LAT 41°05.2'N, LONG 73°07.8'W N c. LAT 41°05.2'N, LONG 73°07.5'W N d. LAT 41°05.1'N, LONG 73°07.7'W 15414: At 2100, you have passed through the Chesapeake Bay Bridge and Tunnel and determine your position to be LAT 37°01.3'
N, LONG 76°03.0'W. The current is flooding in a direction of 303°T at 2.5 knots. Adjusting your course for set and drift, which course would you steer while turning RPMs for 6 knots to make good a course of 175°T?
Y a. 156°T N b. 164°T N c. 183°T N d. 190°T 15842: From your 2030 fix you change course to 195°T, and leave the engine speed at 14 knots.
At 2045, Your position is L 37° 13.50'N Long 075° 38.05' W
Which statement is TRUE?
Y a. Cape Charles Light bears 050° relative. N b. Chesapeake Light bears 190° relative. N c. Your fathometer reading is approximately 40 fathoms. N d. Your vessel is located in a restricted area. 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 16014: From your 0430 position, what is the course per standard magnetic compass to a position where Twenty-eight foot Shoal lighted buoy "TE" is abeam to port at 1 mile?
N a. 082.5° N b. 086.0° N c. 098.0° Y d. 101.5° 16070: When exiting Thimble Shoal Channel bound for Norfolk, the track line based on the lights of the Norfolk Entrance Reach Range is __________.
N a. 220°T N b. 222°T Y c. 224°T N d. 228°T 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) 16363: At 0405, you increase speed and at 0500 your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of water?
N a. 46 feet (13.9 meters) Y b. 54 feet (16.4 meters) N c. 62 feet (18.8 meters) N d. 66 feet (20.0 meters) 16406: At 0227, you take the following radar ranges and bearings:
Bartlett Reef Light 359°T at 2.4 miles
Race Rock Light 083°T at 4.1 miles
What is your 0227 position?
Y a. LAT 41°14.1'N, LONG 72°08.2'W N b. LAT 41°14.2'N, LONG 72°08.4'W N c. LAT 41°14.0'N, LONG 72°08.5'W N d. LAT 41°14.3'N, LONG 72°08.5'W 16606: Your position is LAT 40°59.0'N, LONG 73°06.2'W. What is the course per standard magnetic compass to New Haven Harbor Lighted Whistle Buoy "NH"?
N a. 035° N b. 046° N c. 049° Y d. 052° 16611: At 0109 you get underway, and at 0112 you take the following set of bearings:
Branford Reef Light bearing 051°true
Stratford Point Light bearing 258°true
What is your 0112 position?
N a. LAT 41°11.2'N, LONG 72°51.7'W N b. LAT 41°11.4'N, LONG 72°50.5'W Y c. LAT 41°11.4'N, LONG 72°51.3'W N d. LAT 41°11.8'N, LONG 72°51.5'W 16741: At 2346 Montauk Point Light bears 285°pgc, and the radar range to Montauk Point is 5.9 miles. You are steering to make good 034°T. In order to remain westward of Southwest Ledge you should __________.
Y a. come left when South East Point Light bears 057° true N b. remain on your present course and you will clear Southwest Ledge N c. keep Block Island North Light bearing 033°T or less N d. alter course to the right when Block Island Aerobeacon bears 055°T