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.
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 217: Your 1600 position is LAT 37°22.5'N, LONG 75°32.3'W. The depth of water under the keel is about __________.
N a. 59 feet (17.3 meters) N b. 52 feet (15.8 meters) N c. 45 feet (13.6 meters) Y d. 38 feet (11.5 meters) 236: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 3° leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 109°psc N b. 112°psc Y c. 115°psc N d. 118°psc 253: 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. 1.8 mile N b. 1.3 mile Y c. 0.8 mile N d. 0.2 miles 640: 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. Y c. Setting a buoy is the act of placing a buoy on assigned position in the water. N d. None of the above. 676: You are planning a voyage from Jacksonville, FL, to the Strait of Gibraltar. Using chart WOXZC 5274, determine which statement is TRUE.
N a. All of the courses lie in the northeast quadrant of the compass. N b. You will be east of the Northern Hemisphere vertex during the entire voyage. N c. The great circle track approximates a rhumb line track because there is little difference in the latitudes. Y d. None of the above are true. 1006: On 30 July , your 1030 ZT DR position is LAT 19°02'N, LONG 138°12'W. You are on course 309°T, speed 24 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1220 138°25.0' N 18°22.3' 88°43.3'
1226 139°55.0' N 18°22.2' 88°24.0'
N a. LAT 19°28.0'N, LONG 138°35.2'W Y b. LAT 19°29.7'N, LONG 138°42.0'W N c. LAT 19°32.6'N, LONG 138°49.4'W N d. LAT 19°34.5'N, LONG 138°40.9'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 1267: On 10 December , your 1300 zone time (ZT) DR position is LAT 26°27.0'S, LONG 79°04.0'E. You are on course 068°T at a speed of 14 knots. What will be the zone time of sunset at your vessel?
Y a. 1824 N b. 1846 N c. 1854 N d. 1908 1304: At 1000, on May 11th, you are passing George Prince Lt. (mile 364.1 AHP) in Natchez, Mississippi and must send an ETA to the Monsanto Terminal in St. Louis (mile 178.0 UMR). Your engines are still turning for 8.5 mph and you estimate the current at 2.5 mph. What will be your arrival time in St. Louis?
N a. 1919 on 15 May N b. 2344 on 15 May N c. 1113 on 16 May Y d. 1757 on 16 May 1469: On 2 March , your 2216 ZT DR position is LAT 21°20.0'S, LONG 17°10.0'W. At that time, you observe Saturn bearing 078°psc. The chronometer reads 11h 14m 04s, and the chronometer error is 02m 20s slow. The variation is 4.5°W. What is the deviation of the standard compass?
N a. 1.5°W N b. 1.6°E N c. 2.9°W Y d. 3.6°E 1478: On 12 June , at 0919 zone time, your position is LAT 26°52'N, LONG 84°34'W. The chronometer reads 03h 17m 00s. Chronometer error is 01m 40s slow. At that time, an azimuth of the Sun is obtained. The bearing is 089.5° per standard magnetic compass. Variation for this area is 4.5°E. What is the deviation of the standard magnetic compass?
N a. 9.5°E N b. 9.5°W N c. 5.2°E Y d. 5.2°W 1778: At 2234 ZT, on 14 July , in DR position LAT 34°03'N, LONG 150°16'W you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 272.1°pgc. The variation is 14°E. What is the gyro error?
N a. 0.5°W N b. 0.5°E Y c. 1.5°W N d. 2.5°E 1864: At 0520 zone time, on 17 March , while taking stars for a morning fix, you observe an unidentified star bearing 050°T, at an observed altitude (Ho) of 45°00.0'. Your DR position at the time of the sight is LAT 27°23.0'N, LONG 39°42.0° W. The chronometer time of the sight is 08h 22m 15s, and the chronometer error is 01m 45s fast. Your vessel is steaming on a course of 300°T at a speed of 18 knots. What star did you observe?
N a. Altair N b. Alkaid N c. Arcturus Y d. Deneb 1887: On 8 April , your evening DR position is LAT 22°16.0'N, LONG 157°58.3'W. You observe an unidentified star bearing 271°T at an observed altitude (Ho) of 44°08.2'. The chronometer reads 05h 09m 57s, and is 01m 23s slow. What star did you observe?
N a. Betelgeuse Y b. Aldebaran N c. Alnilam N d. Bellatrix 1893: On 22 July , your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 104°T at an observed altitude (Ho) of 9°55.7'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
N a. Hamal Y b. Rigel N c. Menkar N d. Acamar 1919: On 17 March , your 0520 DR position is LAT 27°23.0'N, LONG 39°42.0'W. You observe an unidentified star bearing 110°T at an observed altitude (Ho) of 50°47.2'. The chronometer reads 08h 22m 15s, and is 01m 45s fast. What star did you observe?
Y a. Altair N b. Alkaid N c. Arcturus N d. Deneb 2052: 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 2296: If your vessel is making turns for 7.5 mph with an estimated average current of 1.5 mph, what is your ETA at the dock in Angelina, LA?
Y a. 1621, 28 Dec N b. 2203, 28 Dec N c. 0516, 29 Dec N d. 1621, 29 Dec 2340: You have steamed 775 miles at 17 knots, and consumed 145 tons of fuel. If you have to steam 977 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 18 knots?
Y a. 204 tons N b. 181 tons N c. 163 tons N d. 129 tons 2592: What chart would you need to enter Port Jefferson Harbor?
Y a. 12362 N b. 12364 N c. 12369 N d. 12370 2781: Your engine speed is 9.8 mph and you estimate the current at 1.6 mph. What is your speed over the ground?
N a. 11.0 mph N b. 9.8 mph N c. 8.6 mph Y d. 8.2 mph 2898: You are steaming on a course of 267°T at 22 knots. At 0433 you observe a lighthouse bearing 290°T. At 0452 the lighthouse bears 328°T. What is your distance off at the second bearing?
Y a. 4.5 nm N b. 5.9 nm N c. 6.6 nm N d. 7.2 nm 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% 3059: The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the vessel cruised 458 miles in a 23 hour day (observed distance) at an average RPM of 78?
N a. +5.6% Y b. -5.6% N c. +12.3% N d. -12.3% 3302: You have steamed 132 miles and consumed 14.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 289 miles?
N a. 21.6 tons N b. 24.5 tons N c. 27.9 tons Y d. 30.7 tons 3311: You have steamed 162 miles and consumed 14.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 285 miles?
Y a. 24.6 tons N b. 34.7 tons N c. 43.3 tons N d. 54.8 tons 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 10607: At 0912 your GPS position is LAT 41°04.9'N, LONG 72°42.1'W. You are on course 085° per standard magnetic compass at a speed of 6 knots. At 1052 your GPS position is 0.5 mile due south of Twenty-Eight Foot Shoal Lighted Buoy "TE". What were your set and drift?
N a. 145°T at 1.2 knots N b. 148°T at 0.9 knot N c. 320°T at 1.3 knots Y d. 325°T at 0.7 knot 11801: What course should you steer by standard magnetic compass (psc) between Horton Pt. Light and Falkner Island Light, if the set and drift of the current are 040°T at 0.9 knot, and a westerly wind will cause 2° of leeway? Your engines are making turns for 10 knots.
Y a. 314.0°psc N b. 319.0°psc N c. 324.5°psc N d. 328.5°psc 11903: What is the true course to steer between the entrance to Winnapaug Pond (LAT 41°19.6'N, LONG 71°45.8'W) and the entrance to Lake Montauk (LAT 41°04.8'N, LONG 71°56.3'W), if you are turning for 8.5 knots, allowing for a current of 095°T at 0.9 knot, and an easterly wind is causing 3° of leeway?
N a. 200°T N b. 208°T Y c. 211°T N d. 214°T 12105: While in the Back River, you sight the two tanks along the Northwest Branch (vicinity LAT 37°05.6'N, LONG 76°22.0'W) in line bearing 274°psc. If your vessel is heading 300°psc, what is TRUE?
Y a. There is no deviation. N b. The deviation is equal to the variation. N c. The deviation is 9°E. N d. The deviation is 0° only for a bearing of 274°psc. 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 12904: Your 0916 position is LAT 37°10.9'N, LONG 75°29.6'W. You are turning for 12.3 knots. What is your ETA at North Chesapeake Bay Entrance Buoy NCA?
N a. 1035 N b. 1043 Y c. 1051 N d. 1101 14201: The draw of the Burlington Northern railroad bridge across the Columbia River at mile 328.0 shall be opened on signal, without prior notice, from __________.
N a. 6:00 am to 6:00 pm N b. 6:00 pm to 6:00 am N c. 8:00 pm to 4:00 am Y d. 8:00 am to 4:00 pm 15140: At 2100 your position is 40°44.1'N, 72°07.6'W. From this position, at which time will Montauk Point Light become visible if the luminous range of the light is 8 miles?
N a. 2215 Y b. 2221 N c. 2227 N d. 2235 15307: At 0315, you obtain the following bearings:
Old Plantation Flats Light bearing 179.5° true
Wolf Trap Light bearing 271° true
What is the true course from this position to the entrance of York Spit Channel?
N a. 203° Y b. 208° N c. 211° N d. 217° 15462: Visibility has decreased to 1 mile in haze. At 0948, you take the following radar ranges. What course should you steer per gyrocompass from this fix to enter the channel between buoys "19" and "20"?
Thimble Shoal Light - 5.9 miles
South end of trestle C of the Chesapeake Bay Bridge
and Tunnel - 3.8 miles
South end of trestle B of the Chesapeake Bay Bridge
and Tunnel - 5.4 miles
N a. 001°pgc N b. 004°pgc N c. 007°pgc Y d. 010°pgc 15629: In order to determine what buoys, if any, are in place at Concordia Bar crossing (mile 596.0 AHP), what should you check?
N a. Bulletin board at the Rosedale Gage N b. Waterways Journal Y c. Notice to Mariners N d. Light List 15645: You round Montauk Point and steer to make good 206°T. Speed is increased to 13.0 knots. The current, if any, is unknown. The visibility has improved and is estimated to be 5 miles. At 2144 Montauk Point Light bears 273°T. At 2202 the same light bears 320°T. Which statement concerning your 2202 running fix is TRUE?
N a. You are inside the lobster pot area. Y b. The fathometer reads about 12 fathoms. N c. You are inside of the 90 foot curve. N d. You are outside the boundary of the Territorial Sea and Contiguous Zone. 15662: At 0748, you take the following bearings:
Watch Hill Point Light bearing 026.5°pgc
Race Point Light bearing 275.5°pgc
What is the approximate depth of water under the keel at this position?
N a. 325 feet (98.5 meters) N b. 175 feet (53.0 meters) N c. 130 feet (39.4 meters) Y d. 112 feet (33.9 meters) 15668: At 0839, Montauk Pt. Light is bearing 205°T at a radar distance of 6.6 miles. What is your speed made good from your 0815 position?
N a. 8.2 knots Y b. 9.2 knots N c. 10.0 knots N d. 10.5 knots 15669: The area between Block Island and Montauk Point that is bounded by dashed magenta lines is a __________.
N a. naval exercise area N b. fish trap area Y c. submerged cable area N d. restricted navigation area 15739: Your 1900 position is LAT 40°45.5'N, LONG 72°03.0'W. Your course is 046°T, and your engines are turning RPM's for 9 knots. At your 1939 DR position, what is the expected relative bearing of Montauk Point Light on the port bow?
N a. 024° relative Y b. 028° relative N c. 032° relative N d. 036° relative 15915: At 0925, you obtain the following radar information:
Falkner Island Light bearing 252° true @ 1.65 nm
If you correct for a current setting 215°T at 0.5 knot,
what course will you steer from the 0925 position to arrive at a position 0.5 mile south of Long Sand Shoal West End Horn Buoy "W"?
Y a. 089°T N b. 093°T N c. 096°T N d. 102°T 15960: From your 1752 position, you steer 313°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light - 238°pgc.
Chesapeake Bay Tunnel North Light - 136°pgc.
What are the latitude and longitude of your 1805 position?
Y a. LAT 37°05.9'N, LONG 76°08.0'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.0'N, LONG 76°08.7'W N d. LAT 37°06.1'N, LONG 76°08.1'W 15968: What was the speed made good from 1900 to 1925?
N a. 8.5 knots N b. 8.7 knots N c. 8.8 knots Y d. 9.1 knots 16056: At 1730, your position is LAT 37°13.9'N, LONG 76°26.4'W. What is your distance off Tue Marshes Light?
N a. 2.2 miles Y b. 2.6 miles N c. 3.0 miles N d. 3.4 miles 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 16443: As you transit the Chesapeake Bay Bridge and Tunnel, you take a gyro bearing of trestle C when it is in line. The gyro bearing was 050°. At that time, the helmsman noted that he was heading 139°pgc and 146° per standard magnetic compass. What is the deviation?
Y a. 2°E N b. 0° N c. 2°W N d. 4°W 16544: At 2347 you are advised that your assistance is no longer needed. At 2350 you change course to make good 268°T. At 0015 you take the following round of bearings:
Kelsey Point Breakwater light 024°pgc
Horton Point Light 100°pgc
Falkner Island Light 333°pgc
At 0030 Falkner Island Lt. bears 000°T at 5.9 miles.
What is the course and speed made good between 0015 and 0030?
N a. CMG 262°T, SMG 10.4 knots N b. CMG 268°T, SMG 10.8 knots N c. CMG 268°T, SMG 10.4 knots Y d. CMG 272°T, SMG 10.8 knots 16739: What is the earliest time you should sight Montauk Point Light (nominal range - 24 miles) if you are turning for 9.2 knots? Visibility is 5 nautical miles.
Y a. The light is visible at 2212 N b. 2221 N c. 2243 N d. You will not sight the light on this course.