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.
63: In addition to the Army Corps. of Engineers maps, data on bridge clearances may be found in the __________.
Y a. Light List N b. Waterways Journal N c. Army Corps. of Engineers Regulations N d. Channel Report 86: As you approach Shreves cut-off you see Red River Landing Gage (mile 302.4 AHP) which reads 6.2 feet. Which of the following statements is TRUE?
N a. This reading is 6.2 feet above the Low Water Reference Plane. Y b. This reading is at the same elevation as the 6.2 ft. mark on the Gage at Head of Passes. 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. 96: As you approach Kate Aubrey Towhead Light (mile 789.5 AHP), your searchlight will show what type of marking at the light?
Y a. Green diamond N b. Red and green banded square N c. Green triangle N d. Green square 108: The horizontal clearance of the center span on the Baton Rouge RR and Highway 190 Bridge is __________.
N a. 443 N b. 500 Y c. 623 N d. 748 123: On which map would you find Redman Point, Arkansas?
Y a. 20 N b. 23 N c. 29 N d. 37 213: From your 1915 position, you come left and set a course for Gardiners Point. At 1930, your position is LAT 41°12.7'N, LONG 71°56.8'W. What type of bottom is charted at this position?
N a. Blue mud, gritty shells N b. Buried mussels, gritty shells N c. Bumpy muck with grainy surface Y d. Blue mud, gray sand 292: If you have 17.3 miles to reach your destination from your 2000 position and want to be there at 2230, what speed should you make good?
Y a. 6.9 knots N b. 6.5 knots N c. 6.1 knots N d. 5.7 knots 450: If you want to put into Point Judith Harbor of Refuge, what chart should you use?
Y a. 13219 N b. 13217 N c. 13209 N d. 13205 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 599: Which town is located at mile 663.5 AHP?
Y a. Helena N b. Friers Point N c. St. Francis N d. Rodney 600: What is the brown colored tint shown at Bordeaux Point Dykes (mile 681.0 AHP)?
N a. river gage N b. fish hatchery N c. levee Y d. dredge material 633: The Linwood Bend revetment on the LMR extends from mile __________.
N a. 828.1-823.1 RDB N b. 831.7-829.4 RDB Y c. 841.3-838.7 LDB N d. 845.4-842.5 LDB 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. 807: On 12 February your 0542 zone time (ZT) fix gives you a position of LAT 26°42.0'N, LONG 60°18.0'W. Your vessel is on course 300°T, and your speed is 9.8 knots. Local apparent noon (LAN) occurs at 1220 ZT at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 49°10.0'. What is the calculated latitude at LAN?
N a. 27°13.5'N Y b. 27°16.3'N N c. 27°17.6'N N d. 27°19.2'N 1132: Which light will you be passing at 0059, on 22 September, if you make good 9.2 knots?
Y a. Obion Bar Lt. N b. Kate Aubrey Lt. N c. Trotter Lt. N d. Quaker Oats Lt. 1175: On 12 February , your 0900 zone time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course 093°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1237 N b. 1233 N c. 1230 N d. 1226 1191: On 14 October , your 0800 ZT DR position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1142 N b. 1148 N c. 1152 Y d. 1156 1418: How far is it to the Hernando Desoto Bridge in Memphis, TN?
N a. 980.8 miles N b. 736.6 miles N c. 312.3 miles Y d. 218.1 miles 1679: On 13 October , your vessel's 1722 zone time DR position is LAT 27°36'S, LONG 136°16'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 266° per standard magnetic compass. Variation in the area is 2°W. The chronometer reads 08h 24m 19s and is 01m 43s fast. What is the deviation of the standard magnetic compass?
N a. 2.3°E Y b. 2.8°W N c. 4.8°E N d. 6.8°W 1783: At 2048 ZT, on 13 October , in DR position LAT 44°02.8'S, LONG 146°58.3'E, you observe an amplitude of Venus. The planet is about one Sun's diameter above the visible horizon and bears 222.2°psc. The variation is 15°E. What is the deviation?
N a. 0.0° N b. 1.1°E Y c. 1.0°W N d. 1.5°W 1878: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observe a faint unidentifiable star through a hole in the clouds. The star bore 132.3°T at a sextant altitude (hs) of 29°34.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
Y a. Beta Gruis N b. Sigma Capricorni N c. Scheat N d. Alpha Indi 2004: On 28 February , your 1850 zone time DR position is LAT 27°49.0'N, LONG 159°24.0'W. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
Y a. Rigel, Schedar, Regulus N b. Sirius, Mirfak, Elnath N c. Hamal, Alkaid, Canopus N d. Bellatrix, Vega, Regulus 2017: On 2 February , your 0400 zone time DR position is LAT 24°14.0'N, LONG 163°28.0'W. You are on course 322°T at a speed of 22 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
Y a. Saturn, Antares, Rasalhague N b. Jupiter, Saturn, Polaris N c. Saturn, Polaris, Zubenelgenubi N d. Jupiter, Spica, Denebola 2082: 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. 42.5 feet (12.9 meters) N b. 51.0 feet (15.5 meters) Y c. 59.5 feet (18.0 meters) N d. 60.4 feet (18.4 meters) 2111: According to the DR track line from your 0100 position, how far off Roanoke Point Shoal Buoy "5" should you be when the buoy is abeam?
N a. 0.2 mile Y b. 0.6 mile N c. 1.3 mile N d. 1.8 miles 2322: At 1032 on 24 June, you pass Carolina Landing Light (mile 508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
Y a. 0.5 mph N b. 1.5 mph N c. 5.7 mph N d. 8.5 mph 2332: If you are making 8.3 knots over the ground, what is your ETA at the turning point in York Spit Channel at buoy "29"?
Y a. 0521 N b. 0509 N c. 0459 N d. 0448 2592: What chart would you need to enter Port Jefferson Harbor?
Y a. 12362 N b. 12364 N c. 12369 N d. 12370 2669: You are steering 143°T, and a light is picked up dead ahead at a distance of 18.2 miles at 2006. You change course to pass the light 5.5 miles off abeam to port. If you are making 14.5 knots, what is your ETA at a position 5.5 miles off the light?
N a. 2115 Y b. 2118 N c. 2121 N d. 2124 2712: What is the length of the trip?
N a. 720.8 miles N b. 777.4 miles Y c. 897.2 miles N d. 906.3 miles 2894: You are steaming on a course of 071°T at 19 knots. At 1907 you observe a lighthouse bearing 122°T. At 1915 the lighthouse bears 154°T. What is your distance off at the second bearing?
N a. 3.4 miles Y b. 3.7 miles N c. 4.0 miles N d. 4.3 miles 2909: You are running coastwise at 14 knots. You sight a lighthouse abeam at 0912. At 0939 the lighthouse is 4 points abaft the beam. What is your distance off at the second bearing?
N a. 5.5 miles N b. 6.3 miles N c. 7.8 miles Y d. 8.9 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 3064: The propeller of a vessel has a pitch of 19.0 feet. If the vessel traveled 183.5 miles (observed distance) in 24 hours at an average of 44 RPM, what was the slip?
Y a. +7.4% N b. -7.4% N c. +11.6% N d. -11.6% 3097: If the pitch of the propeller is 19.4 feet, and the revolutions per day are 96,713, calculate the day's run allowing 6% positive slip.
N a. 266.4 miles Y b. 290.1 miles N c. 308.6 miles N d. 327.1 miles 3640: You desire to make good a true course of 223°. The variation is 2°E, magnetic compass deviation is 2°E, and gyrocompass error is 1°W. An east-southeast wind produces 3° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 213°psc Y b. 216°psc N c. 220°psc N d. 223°psc 3650: The true course between two points is 194°. Your gyrocompass has an error of 2°W and you make an allowance of 1° leeway for a southwest wind. What gyro course should you steer to make the true course good?
N a. 193°pgc N b. 195°pgc Y c. 197°pgc N d. 199°pgc 3763: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 178°T, and the variation is 9°W. If the heading of your vessel at the time of the sighting is 180° per standard magnetic compass, what is the deviation?
N a. 2°E N b. 2°W Y c. 7°E N d. 7°W 12209: You sight South West Ledge Light in line with New Haven Outer Channel Range Rear Light bearing 338.5° per standard magnetic compass. What is the deviation?
Y a. 3°E N b. 4°W N c. 6°E N d. 9°W 12600: You are on course 243° per standard magnetic compass when you take the following bearings: Falkner Island Light 342°psc Mattituck Inlet Light 207°psc Horton Point Light 112°psc What is your position?
N a. LAT 41°05.9'N, LONG 72°32.7'W N b. LAT 41°05.7'N, LONG 72°31.8'W Y c. LAT 41°05.5'N, LONG 72°32.6'W N d. LAT 41°05.3'N, LONG 72°31.9'W 12708: You are on course 302° per standard magnetic compass when you take the following bearings: Little Gull Island Light 283°psc Race Rock Light 311°psc Latimer Reef Light 027°psc What is your position?
N a. LAT 41°12.2'N, LONG 71°57.6'W N b. LAT 41°12.4'N, LONG 71°57.4'W N c. LAT 41°12.4'N, LONG 71°57.9'W Y d. LAT 41°12.6'N, LONG 71°57.6'W 15118: What was the speed made good from 1845 to 1930?
N a. 6.2 knots N b. 7.5 knots Y c. 8.3 knots N d. 9.4 knots 15139: At what time would you expect to be abeam of Buoy "MP"?
N a. 2240 N b. 2244 Y c. 2248 N d. 2252 15312: You arrive at the rendezvous point, secure the tow, and head back southward. At 1200, you take the following bearings:
Cape Charles Light bearing 240.5° true
Sand Shoal Inlet South Light bearing 289° true
What is your 1200 position?
N a. LAT 37°10.5'N, LONG 75°33.0'W N b. LAT 37°12.0'N, LONG 75°35.0'W Y c. LAT 37°15.0'N, LONG 75°37.5'W N d. LAT 37°19.0'N, LONG 75°40.5'W 15444: At 2306, as you pass through Trestle "C", you take a gyro bearing of the trestle when it is in line. The bearing is 049.0°. What is the gyro error?
Y a. 0° N b. 1.5°E N c. 1.0°W N d. 2.5°W 15461: At 0908, you change course to 010°T. What course should you steer per standard magnetic compass?
N a. 003° N b. 017° Y c. 021° N d. 359° 15843: You continue to steer 195°T. You pass Cape Charles Lighted Bell Buoy "14", 0.9 miles abeam to starboard at 2111. Your speed made good from 2045 to 2111 is __________.
N a. 13.7 knots N b. 14.1 knots N c. 14.5 knots Y d. 14.8 knots 16062: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2000, you take the following bearings: Chesapeake Channel Tunnel North Light - 131°pgc Thimble Shoal Light - 247°pgc
What were the set and drift between 1930 and 2000?
N a. 140°T at 0.2 knot Y b. 140°T at 0.4 knot N c. 320°T at 0.2 knot N d. 320°T at 0.4 knot 16063: At 2013, you sight Thimble Shoal Light in line with Old Point Comfort Light bearing 258°pgc. At the time of the bearing, the vessel was headed 142°pgc and 151°psc. Based on this, you __________.
N a. know the gyro error is 2°E N b. should adjust the magnetic compass N c. verified that the variation is 10°W Y d. have checked the deviation table for a magnetic heading of 150° 16141: The speed you can expect to make good over your course while steering to make 150°T is __________.
N a. 11.0 knots Y b. 11.4 knots N c. 14.0 knots N d. 14.4 knots 16444: At 1042 you take the following round of bearings:
Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T at a speed of 9.5 knots.
What is the course per standard magnetic compass?
N a. 069.5°psc N b. 060.5°psc Y c. 079.5°psc N d. 080.5°psc 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 :
N a. N b. N c. N d.