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.
64: What is the length of the trip?
N a. 726.0 miles Y b. 851.9 miles N c. 878.9 miles N d. 879.6 miles 128: At Filter Point Light (mile 475 AHP) there are 2 close straight dashed lines on the map. What do these lines represent?
N a. Submerged oil pipelines N b. Submerged telephone cables N c. Submerged gas pipelines Y d. Aerial power cables 166: If the Bayou Sara Gage reads -0.5 feet, the Low Water Reference Plane is 5.25. What is the water level in relation to the low water reference plane?
N a. 0.5 foot below the plane N b. 0.5 foot above the plane N c. 5.25 feet above the plane Y d. 5.75 feet below the plane 179: In order to check your compasses, you sight North Dumpling Island Light in line with Latimer Reef Light bearing 077°pgc. The helmsman was steering 307°pgc and 320° per standard magnetic compass at the time. Which statement is TRUE?
N a. The gyro error by observation is 2°E. N b. The deviation based on the observation is 15°W. Y c. The magnetic compass error is 14°W. N d. The true line of the range is 079°. 183: At 1920, the buoy off your starboard bow is __________.
Y a. Sand Shoal Inlet Lighted Buoy "A" N b. Hog Island Lighted Bell Buoy N c. South Light Buoy N d. an interrupted quick flashing buoy 258: During twilight on 28 December , about 1800 GMT, in DR position LAT 4°00'N, LONG 0°06'W, the sextant altitude (hs) of Venus was 30°46.8'. The height of eye was 36 feet, and the index error was 2.0' on the arc. The temperature was 68°F. The barometer read 1030 mb. Calculate the observed altitude (Ho).
N a. Ho 30°35.2' N b. Ho 30°37.1' Y c. Ho 30°38.1' N d. Ho 30°40.3' 284: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone N b. cross a submerged pipeline Y c. depart a regulated area N d. depart a restricted area 356: At 0410, you take the following bearings:
New Point Comfort Light "2" 242°T
Wolf Trap Light 313°T
Horn Harbor Entrance Light "HH" 262°T
What is your 0410 position?
N a. LAT 37°20.9'N, LONG 76°07.7'W Y b. LAT 37°21.0'N, LONG 76°08.1'W N c. LAT 37°21.1'N, LONG 76°07.9'W N d. LAT 37°21.2'N, LONG 76°08.2'W 442: Shortly after getting underway, you sight Stonington Outer Breakwater Light in line with Stonington Inner Breakwater Light bearing 000° per gyrocompass. Which statement is TRUE?
N a. The deviation is 2°W N b. The variation is 2°E. N c. The compass error is 16°W. Y d. The gyro error is 2.5°W 832: On 19 November , in DR position LAT 20°03.5'N, LONG 129°48.0'W, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 11h 29m 44s, and the chronometer error is 01m 23s slow. The sextant altitude (hs) is 43°54.3'. The index error is 2.0' off the arc, and your height of eye is 48 feet. What is the latitude at meridian transit?
N a. 20°08.2'N Y b. 19°58.0'N N c. 19°53.2'N N d. 19°50.6'N 988: On 29 June , your 0800 zone time fix gives you a position of LAT 26°16.0'S, LONG 61°04.0'E. Your vessel is steaming a course of 079°T at a speed of 15.5 knots. An observation of the Sun's upper limb is made at 0905 zone time, and the observed altitude (Ho) is 25°20.1. The chronometer reads 05h 08m 12s, and the chronometer error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) for this sight is 40°44.2'. Determine the vessel's 1200 zone time position.
Y a. LAT 26°02.0'S, LONG 62°05.0'E N b. LAT 26°02.0'S, LONG 62°23.2'E N c. LAT 26°05.1'S, LONG 62°06.3'E N d. LAT 25°56.0'S, LONG 62°03.0'E 1089: At 1830 zone time, on 6 April , your DR position is LAT 26°33.0'N, LONG 64°31.0'W. You are steering course 082°T at a speed of 16.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. NP-0019
N a. LAT 26°20.1'N, LONG 64°19.4'W N b. LAT 26°23.7'N, LONG 64°29.3'W N c. LAT 26°28.4'N, LONG 64°32.1'W Y d. LAT 26°32.5'N, LONG 64°27.1'W 1120: At 0850, 4 January, you pass the Gage at Natchez, MS which reads 26.8 feet. The low water reference plane (LWRP) for Natchez is 6.1 feet. What is the water level in relation to the low water reference plane?
Y a. 20.7 ft above N b. 20.7 ft below N c. 32.9 ft above N d. 32.9 ft below 1146: The Linwood Bend revetment on the LMR extends from mile __________.
N a. 828.1-823.1 RDB N b. 831.7-829.4 RDB N c. 845.4-842.5 LDB Y d. 841.3-838.7 LDB 1242: The solid lines extending into the channel at mile 948 AHP are __________.
Y a. dikes N b. revetments N c. spoil areas N d. Westvaco Service Facilities 1340: At 1300, 5 January, the river will be temporarily closed to navigation for six hours at mile 531.3 AHP due to repairs to a bridge. What minimum speed over the ground must you make from Natchez Gage in order not to be delayed?
N a. 5.7 mph Y b. 6.0 mph N c. 6.8 mph N d. 7.3 mph 1412: At Filter Point Light (mile 475 AHP) there are 3 close straight dashed lines on the map passing through the black dot below the number 475. What do these lines represent?
N a. Oil pipelines N b. Submerged gas pipelines Y c. Power Cables N d. Submerged fiber optic cable 1536: As you approach Casting Yard Dock Lt. (mile 265.4 AHP) you notice on the map a circle with 2 black sectors. This symbol indicates a __________.
N a. lock N b. warning sign Y c. river gage N d. mooring buoy 1540: You estimate the current at 2.0 mph. What is the speed over the ground?
N a. 9.5 mph Y b. 5.5 mph N c. 5.0 mph N d. 4.5 mph 1653: On 28 Sept. , in DR position LAT 24°12.0'S, LONG 85°25.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 094°psc. The chronometer reads 11h 29m 42s and is 03m 30s slow. Variation in the area is 4°W. What is the deviation of the magnetic compass?
N a. 1.5°W N b. 2.1°W N c. 1.8°E Y d. 2.4°E 1704: Which of the following statements regarding buoys on the Mississippi River is TRUE?
N a. The positions of river buoys can be found in the latest edition of Light List-Vol. V. N b. The buoys are maintained on station year round. Y c. Buoy positions on the chart are approximate. N d. The buoys do not shift positions due to permanent moorings. 1877: On 2 October , your 1845 DR position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 63°29.1' bearing 237.5°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe?
Y a. Kappa Scorpii N b. Beta Ophiuchi N c. Alpha Arae N d. Beta Draconis 1909: On 22 March , your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 294°T at an observed altitude (Ho) of 33°02.7'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. What star did you observe?
N a. Regulus Y b. Menkar N c. Rigel N d. Alphard 2003: On 20 June , your 1742 zone time DR position is LAT 24°55.0'S, LONG 8°19.6'E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?
Y a. Regulus, Canopus, Antares N b. Spica, Arcturus, Alioth N c. Arcturus, Achernar, Pollux N d. Avior, Sabik, Fomalhaut 2241: At 1318 ZT, on 10 September , in DR position LAT 24° 05.8' N, LONG 058° 08.3' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 254° psc. Variation is 2° W. What is the deviation?
N a. 8.0°W N b. 8.0°E Y c. 4.0°W N d. 4.0°E 2442: Anchorage regulations for this area may be obtained from __________.
N a. Office of Commander 2nd Coast Guard District Y b. District Engineer, Corps of Engineers, Norfolk, VA N c. Virginia - Maryland Pilots Association N d. Chesapeake Bay Port Authority, Hampton VA 2892: You are steaming on a course of 114°T at 17 knots. At 1122 you observe a lighthouse bearing 077°T. At 1133 the lighthouse bears 051°T. What is your distance off at the second bearing?
N a. 3.3 miles N b. 3.9 miles Y c. 4.3 miles N d. 4.9 miles 3058: The propeller on a vessel has a diameter of 20.9 feet and a pitch of 19.6 feet. What would be the apparent slip if the vessel cruised 447 miles in a 23 hour day (observed distance) at an average RPM of 108?
N a. -5.6% N b. +5.6% N c. -7.0% Y d. +7.0% 3613: You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?
N a. 060°T Y b. 070°T N c. 080°T N d. 090°T 3631: You desire to make good a true course of 329°. The variation is 13° W, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. A southerly wind produces a 1° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 319°psc N b. 321°psc Y c. 337°psc N d. 339°psc 3765: Your vessel is proceeding up a channel steering on a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 249°T, and the variation is 14°E. If the heading of your vessel at the time of the sighting is 226° per standard magnetic compass, what is the correct deviation?
N a. 5°E N b. 5°W Y c. 9°E N d. 9°W 11109: What is the velocity of the maximum ebb current approximately 1.1 miles ENE of Little Gull Island in the afternoon of 25 April 1983?
Y a. 5.5 knots N b. 4.7 knots N c. 4.2 knots N d. 1.3 knots 11109: What is the velocity of the maximum ebb current approximately 1.1 miles ENE of Little Gull Island in the afternoon of 25 April 1983?
Y a. 5.5 knots N b. 4.7 knots N c. 4.2 knots N d. 1.3 knots 11702: You are eastbound in the Thimble Shoal Channel. What is the true heading to steer if the engines are turning for 9.5 knots, the current is 110°T at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 111° N b. 108° N c. 105° N d. 100° 12203: Your vessel is steady on a heading of 310° per standard magnetic compass when you sight Stratford Point Light and Igor I. Sikorsky Airport Aero Beacon in line dead ahead. This information indicates that the __________.
N a. existing deviation table is correct for this heading N b. deviation is 1°E N c. variation is 18°W for this area Y d. compass error is 10°W 13302: The shoal spanned by Trestle B of the Chesapeake Bay Bridge and Tunnel is __________.
N a. Chesapeake shoal N b. the Middle ground N c. Lynnhaven roads Y d. the Tail of the Horseshoe 13307: The soundings on the chart are based on the depth of water available at __________.
N a. mean low water Y b. mean lower low water N c. mean high water N d. mean high water springs 14203: What is the vertical clearance of the fixed bridge across the entrance to Rock Creek at Stevenson, Washington?
Y a. 18 feet N b. 36 feet N c. 54 feet N d. 70 feet 15018: What course per standard magnetic compass (psc) is the same as 247°pgc?
N a. 240°psc N b. 246°psc Y c. 257°psc N d. 260°psc 15070: As you enter New London Harbor, you are steering on the entrance range. The lights are in line over the bow as you are heading 352°pgc. What is the gyro error?
Y a. 2°E N b. 0° N c. 1°W N d. 3°W 15109: What is the average velocity of the maximum flood current at the Tail of the Horseshoe?
N a. 0.6 knot Y b. 0.9 knot N c. 1.3 knots N d. 1.6 knots 15309: The engineer has advised that it will be necessary to secure the gyrocompass and the electronic equipment. From your 0315 position, what is your course per standard magnetic compass to York Spit Channel Buoy "38", if there is no current?
N a. 212°psc N b. 214°psc Y c. 216°psc N d. 218°psc 15442: At 2216 CBJ Buoy is close abeam to port. Your lookout reports several sound signals with their relative bearings.
Which would you judge to be coming from a vessel?
N a. A bell, broad on the port bow Y b. A whistle, broad on the starboard beam N c. A bell, dead ahead N d. A gong, two points on the starboard quarter 15763: At 0715, you take the following bearings:
Race Rock Light 324°pgc
Little Gull Island Light 245°pgc
Mt. Prospect Antenna 034°pgc
Based on your 0715 fix, which statement is TRUE?
N a. You are to the right of your track line. Y b. The charted depth is about 265 feet (80.3 meters). N c. You are in a cable area. N d. You are governed by the Inland Rules. 15811: At 0100, you obtain the following bearings:
Rocky Point Lookout Tower 062°T
Horton Point Lighthouse 189°T
What was the speed made good between 0045 and 0100?
Y a. 7.4 knots N b. 8.0 knots N c. 8.7 knots N d. 9.2 knots 16019: The south shore of Long Island Sound from Horton Point to Orient Point is __________.
N a. low and marshy Y b. bluff and rocky N c. marked by sandy beaches and wooded uplands N d. bound by gradual shoaling 16064: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-.3 meter). What is the approximate depth under the keel?
N a. 51 feet (15.5 meters) Y b. 45 feet (13.6 meters) N c. 40 feet (12.1 meters) N d. 35 feet (10.6 meters) 16210: As you near Little Gull Island, you use your loran to insure that you do not come within 0.5 mile of the island. Which of the following loran readings will act as a danger line and keep you off Little Gull Island by a minimum of 0.5 mile?
Y a. Not less than 9960-Y-43953.5 N b. Not more than 9960-W-14735.9 N c. Not less than 9960-W-14735.8 N d. Not more than 9960-X-26149.0 16262: What was the speed made good from 0240 to 0400?
N a. 5.2 knots N b. 5.6 knots Y c. 6.0 knots N d. 6.4 knots 16417: You are encountering heavy weather. What action should you take based on your 1430 fix?
Y a. Alter course to the right, to pass well clear of Southwest Ledge. N b. Continue on the same course at the same speed. N c. Slow to 8.3 knots to compensate for the current. N d. Continue on the same course but increase speed. 16545: At 0030 you alter course and speed to make good 265°T at 10 knots. What is your ETA at a point where Stratford Shoal Middle Ground Light is abeam?
N a. 0218 N b. 0223 N c. 0228 Y d. 0233 16567: 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 Y c. Blue mud, gray sand N d. Bumpy mud with gravel surface 16569: The short-long dashed magenta line around Gardiners Island marks __________.
N a. a regulated anchorage Y b. fish trap areas N c. an area closed to the public N d. underwater cables 16714: What was the current between 0520 and 0600?
N a. 201° at 1.0 knot N b. 201° at 1.5 knot N c. 021° at 1.0 knot Y d. 021° at 1.5 knots