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.
62: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
N a. 75.4 feet Y b. 65.4 feet N c. 54.2 feet N d. 44.4 feet 143: At 1609, on October 5, you are abeam of Star Landing Lt. (mile 707.2 AHP) . You calculate your speed since you departed Sycamore Chute fleeting area. If you are turning for 9.5 mph what was the current?
N a. 1.0 mph N b. 1.5 mph Y c. 2.0 mph N d. 2.5 mph 146: On which river is Dover, KY located?
N a. Mississippi N b. Tennessee Y c. Ohio N d. Missouri 271: At 0844, the range to the north end of Falkner Island is 2.0 miles and the left tangent bearing is 102°T. What is the approximate charted depth of the water?
Y a. 29 ft (8.8 meters) N b. 22 ft (6.7 meters) N c. 19 ft (5.8 meters) N d. 14 ft (4.2 meters) 297: What course should you steer per standard magnetic compass in order to navigate down the center of York River Entrance Channel (ignore set and drift)?
N a. 149°psc N b. 145°psc Y c. 141°psc N d. 139°psc 362: 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?
Y a. 193°pgc N b. 190°pgc N c. 187°pgc N d. 185°pgc 436: 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?
N a. LAT 41°14.5'N, LONG 72°08.0'W Y b. LAT 41°14.1'N, LONG 72°08.2'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 501: You depart from the position in the previous question at 2114 and make good 12 knots on a course of 040°T. At what time will you sight New Haven Light if the visibility is 11 miles?
N a. The light is visible at 2114. N b. 2152 Y c. 2159 N d. 2206 537: Determine the distance from LAT 19°54.0'N, LONG 166°36.0'E to LAT 19°54.0'N, LONG 157°54.0'W. by parallel sailing.
N a. 2204.6 miles N b. 2006.9 miles Y c. 2002.8 miles N d. 1990.6 miles 569: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
N a. LAT 36°59.8'N, LONG 76°18.0'W Y b. LAT 36°59.5'N, LONG 76°18.4'W N c. LAT 36°59.0'N, LONG 76°19.6'W N d. LAT 36°55.5'N, LONG 76°18.6'W 605: At 0915 ZT, on 26 July , you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?
Y a. 0728, 7 August N b. 1528, 7 August N c. 0028, 8 August N d. 1528, 8 August 622: You are on a voyage from Limoy, Costa Rica, to Los Angeles, CA. The distance from departure to arrival is 3150 miles. The speed of advance is 14.0 knots. You estimate 24.0 hours for bunkering at Colon, and 12.0 hours for the Panama Canal transit. If you take departure at 1836 hours (ZD +6), 28 January, what is your ETA (ZD +8) at Los Angeles?
N a. 1736, 9 February N b. 1736, 8 February Y c. 1336, 8 February N d. 0536, 8 February 1109: On 5 May , your 1600 zone time DR position is LAT 17°28'S, LONG 143°39'E. You are on course 316°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1800 running fix.
Y a. LAT 17°05.2'S, LONG 143°11.4'E N b. LAT 17°07.8'S, LONG 143°17.5'E N c. LAT 17°08.2'S, LONG 143°07.9'E N d. LAT 17°09.7'S, LONG 143°10.1'E 1122: Which type of daymark will you see as you approach Old Levee Light (mile 385.2 AHP)?
N a. Green diamond N b. Red square Y c. Green square N d. Private aid - no daymark 1150: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 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 1231: Which 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 N c. Farm Chemical Y d. Baxter Wilson 1263: On 18 October , your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?
N a. 1715 N b. 1729 Y c. 1742 N d. 1751 1271: At 0400 zone time, on 24 June , your DR position is LAT 23°10.0'N, LONG 085°33'W. You are steering 295°T at a speed of 10.0 knots. What is the zone time of sunrise?
N a. 0452 Y b. 0458 N c. 0504 N d. 0510 1423: You pass Ratcliff Light (mile 289.8) at 1650. What was your average speed since leaving Baton Rouge?
N a. 7.3 mph Y b. 7.6 mph N c. 8.0 mph N d. 8.3 mph 1482: On 20 July , your vessel's 1626 zone time DR position is LAT 27°13.0'N, LONG 63°42.0'W, when you take an azimuth of the Sun. Determine the gyro error using the azimuth information.
Chronometer time: 08h 24m 18s Chronometer error: slow 02m 12s Gyro bearing: 279.3°
Variation: 15°W
Y a. 1.9°W N b. 2.6°W N c. 1.4°E N d. 2.6°E 1768: The Natchez Gage reads 14.5 feet. The high point on your towboat is 47 feet above the water. What is the vertical clearance as you pass under the Natchez - Vidalia Highway Bridge?
N a. 58.0 feet Y b. 64.5 feet N c. 72.5 feet N d. 78.6 feet 2009: On 16 July , your 1920 ZT DR position is LAT 25°36.0'N, LONG 172°18.9'W. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Rasalhague, Spica, Arcturus Y b. Venus, Antares, Vega N c. Vega, Mars, Antares N d. Saturn, Acrux, Spica 2019: On 15 October , your 0300 zone time DR position is LAT 27°14'S, LONG 99°46'E. You are on course 128°T at a speed of 19 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Jupiter, Alphard, Betelgeuse N b. Mars, Regulus, Canopus N c. Achernar, Suhail, Alphard Y d. Achernar, Procyon, Aldebaran 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 2107: At 0045, you obtain the following bearings:
Rocky Point lookout tower 072°T
Horton Point lighthouse 213°T
What were the set and drift between 0005 and 0045?
N a. 272°true, 0.9 knot N b. 272°true, 1.4 knots N c. 092°true, 0.9 knot Y d. 092°True, 1.4 knots 2672: While on a course of 283°pgc, a light bears 10° on the port bow at a distance of 8.3 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to port?
N a. 289°pgc N b. 294°pgc Y c. 298°pgc N d. 302°pgc 2690: While on a course of 066°pgc, a light bears 13° on the port bow at a distance of 12.3 miles. What course should you steer to pass 4 miles abeam of the light leaving it to port?
N a. 067°pgc Y b. 072°pgc N c. 079°pgc N d. 085°pgc 3052: The propeller on a vessel has a diameter of 21.2 feet and a pitch of 20.0 feet. What would be the apparent slip if the vessel cruised 391 miles in a 24 hour day (observed distance) at an average RPM of 88?
N a. -11.5% N b. +11.5% N c. -6.2% Y d. +6.2% 3256: You have steamed 918 miles at 15.0 knots, and consumed 183 tons of fuel. If you have 200 tons of usable fuel remaining, how far can you steam at 12 knots?
N a. 1021 miles N b. 1261 miles Y c. 1568 miles N d. 1960 miles 3301: You have steamed 217 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 362 miles?
N a. 33.8 tons Y b. 38.4 tons N c. 42.6 tons N d. 45.7 tons 3317: Your vessel consumes 156 barrels of fuel per day at a speed of 13.0 knots. What will be the fuel consumption of your vessel at 16.0 knots?
N a. 192 bbls N b. 236 bbls Y c. 291 bbls N d. 315 bbls 3762: 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 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?
N a. 3°E Y b. 3°W N c. 4°E N d. 4°W 3771: Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyro compass. The variation in the area is 4°E. What is the error of your gyro compass?
Y a. 1.5°W N b. 2.5°W N c. 5.5°W N d. 2.5°E 11013: What will be the height of the tide at Horton Pt., New York, on 16 June 1983, at 1845 DST (ZD +4)?
N a. 0.2 foot Y b. 2.7 feet N c. 4.1 feet N d. 5.5 feet 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 13407: Your position is LAT 41°03.0'N, LONG 72°42.1'W. If your draft is 8 ft, what should your fathometer read at this position?
Y a. 80 ft N b. 88 ft N c. 96 ft N d. 99 ft 15009: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________.
N a. 30 feet ( 9.1 meters) N b. 40 feet (12.1 meters) Y c. 50 feet (15.1 meters) N d. 60 feet (18.1 meters) 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 15112: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone Y b. depart a regulated area N c. cross a submerged pipeline N d. depart a restricted area 15145: At 2357 your position is 41°09.0'N, 71°47.0'W and Montauk Point Light bears 216° true. You change to a course of 293° true and your speed is 14.5 knots. At 0012 Montauk Point Light bears 177° true. Which statement about your 0012 running fix is TRUE?
N a. You are being set to the north. Y b. The fathometer reading is about 14 fathoms. N c. You are governed by the Inland Rules of the Road. N d. The fathometer trace shows you passed over the 89 foot sounding. 15429: What is the vertical clearance of the Vicksburg Highway 80 Bridge when the river level is the same as the Low Water Reference Plane? The low water reference plane (LWRP) for Vicksburg, MS. is 0.1.
N a. 128.3 ft N b. 125.6 ft N c. 119.5 ft Y d. 116.1 ft 15614: From your 1920 position, you change course to enter Chesapeake Channel between buoys 9 and 10. What is the course per standard magnetic compass (psc) ?
N a. 286°psc Y b. 283°psc N c. 280°psc N d. 274°psc 15720: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° Y b. 000° - 041° N c. 208° - 220° N d. 204° - 239° 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 15823: As you approach Shreves cut-off you see Red River Landing Gage (302.4 AHP) which reads 6.2 feet. The Low Water Reference Plane (LWRP) for Red River is 10.6. Which of the following statements is TRUE?
Y a. This reading is at 4.4 ft. below the Low Water Reference Plane. N b. This reading is 6.2 ft. above the Low Water Reference Plane. N c. The depth of water at Red River Landing is 6.2 ft. N d. A vessel drawing 7 ft. would be able to pass through the locks at Lower Old River. 16066: Which statement concerning Thimble Shoal Channel is TRUE?
Y a. The project width of the main channel is 1000 feet (30.3 meters) N b. The channel is 14.5 miles in length. N c. A tow drawing 30 feet (9.1 meters) is excluded from the main channel. N d. Thimble Shoal Channel is in international waters. 16107: If the visibility is 5 miles and you are in the red sector,
at what distance off should you sight Cape Henry Light?
N a. 15 miles N b. 13 miles N c. 11 miles Y d. 09 miles 16315: At 0820, you change course to 301°psc and reduce speed to 7.5 knots. At 0900, you take the following visual bearings:
Branford Reef Light 023°psc
New Haven Light 293°psc
Tweed Airport Aerobeacon 332°psc
Your 0900 position is __________.
N a. LAT 41°11.9'N, LONG 72°50.6'W N b. LAT 41°11.9'N, LONG 72°49.5'W Y c. LAT 41°12.1'N, LONG 72°48.6'W N d. LAT 41°12.5'N, LONG 72°44.3'W