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.
57: At 0922, on 24 May, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 8.0 mph, what is the current?
N a. 7.0 mph N b. 2.0 mph N c. 1.4 mph Y d. 1.0 mph 59: You pass Warnicott Bar Lt. at 1146, 24 May. What is your ETA off the Mhoon Landing Gage if you average 6.5 mph?
N a. 0909, 27 May Y b. 1528, 26 May N c. 0426, 26 May N d. 0152, 26 May 153: What is the minimum maintained depth of the channel from Cairo to Baton Rouge during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 18 feet 249: At 0005, on 26 January, your position is LAT 41°11.8'N, LONG 72°20.5'W. From this position, you plot a course to steer to Mattituck Breakwater Light "MI" with an engine speed of 9.0 knots. If there are no set and drift, what course should you steer?
N a. 225.0°psc N b. 230.5°psc Y c. 233.0°psc N d. 236.0°psc 385: At 0715 you take the following bearings:
Race Rock Light 328°pgc
Little Gull Island Light 249°pgc
Mt. Prospect Antenna 036°pgc
Based on your 0715 fix, which statement is TRUE?
N a. You are governed by the Inland Rules. N b. Your fathometer reads about 265 fathoms. N c. You are in a cable area. Y d. You are to the left of your track line. 448: At 2100, you set course of 000°T, speed 10 knots from LAT 41°07.0'N, LONG 71°30.0'W. Visibility is 5.5 n.m. What is the earliest time you can expect to sight Point Judith Light? (Use charted range of 20 miles as nominal range.)
N a. The light is visible at 2100. N b. 2106 Y c. 2111 N d. 2123 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 561: At 0615 you change course to 078°T. If there is no current, when will Falkner Island Light be abeam?
Y a. 0730 N b. 0735 N c. 0743 N d. 0750 594: After you get underway, what is the first river gage you will pass?
N a. Head of Passes Y b. Donaldsonville N c. Baton Rouge N d. Red River Landing 688: What is the distance from the Amoco Docks at Baton Rouge, LA, to Pittsburgh, PA?
N a. 727.9 miles N b. 981.5 miles N c. 1575.3 miles Y d. 1681.7 miles 755: You are taking a time tick using the 1400 signal from Buenos Aires, Argentina. You hear a 0.4 second dash followed by a series of dots, noting that the 29th and the 56th to 59th dots are omitted. At the start of the following 0.4 second dash (which is followed by an 8 second pulse), the comparing watch reads 01h 59m 57s. When compared to the chronometer, the comparing watch reads 02h 00m 38s, and the chronometer reads 02h 01m 33s. What is the chronometer error?
N a. 0m 03s slow N b. 0m 4ls slow Y c. 0m 52s fast N d. 1m 36s fast 811: On 1 July , your 0515 ZT fix gives you a position of LAT 24°36.0'S, LONG 151°42.0'W. Your vessel is on course 300°T, and your speed is 10.0 knots. Local apparent noon (LAN) occurs at 1215 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 42°55.0'. What is the calculated latitude at LAN?
N a. 24°03.6'S N b. 24°02.5'S Y c. 24°01.0'S N d. 24°00.0'S 1004: On 15 November , your 1030 ZT DR position is LAT 19°41'S, LONG 41°37'W. You are on course 239°T, speed 22 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1128 40°50.4' S 18°33.6' 88°18.4'
1133 42°05.4' S 18°33.6' 88°37.7'
Y a. LAT 20°01.0'S, LONG 42°05.9'W N b. LAT 20°04.3'S, LONG 42°09.8'W N c. LAT 20°06.7'S, LONG 42°06.1'W N d. LAT 20°08.1'S, LONG 42°00.7'W 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 1137: What is the length of the trip?
N a. 1195.4 miles N b. 1223.1 miles N c. 1464.8 miles Y d. 1520.1 miles 1298: Your company wants to know at what time you will be arriving at the fleeting area at Sycamore Chute Light (mile 740.3 AHP) in Memphis, TN You are making turns for 9.0 mph and you estimate the average current at 2.2 mph. Figuring the distance and time from Hole in the Wall Lt. (mile 373.4 AHP), what is your ETA at Sycamore Chute Lt.?
Y a. 1242, April 19th N b. 1645, April 19th N c. 2242, April 19th N d. 2333, April 19th 1473: On 26 January , your 1615 ZT DR position is LAT 27°14.0'S, LONG 57°22.0'W. At that time, you observe the Sun bearing 266°psc. The chronometer reads 08h 13m 19s, and the chronometer error is 01m 46s slow. The variation is 4°E. What is the deviation of the standard magnetic compass?
N a. 4.8°E N b. 4.9°W Y c. 5.9°W N d. 7.8°E 1476: On 16 September , your vessel's 0736 zone time DR position is LAT 27°34'S, LONG 174°49'E, when an azimuth of the Sun is observed. The chronometer time of the sight is 07h 38m 11s, and the Sun is bearing 079.8° per gyrocompass. The chronometer error is 01m 46s fast, and the variation in the area is 11.0°W. At the time of the sight, the helmsman reports that he was heading 252°pgc and 258° per magnetic compass. What is the deviation of the magnetic compass?
N a. 2°W N b. 3°W Y c. 3°E N d. 8°W 1497: On 19 November , your 0146 ZT position is LAT 33°48'N, LONG 25°22'E. You observe Polaris bearing 359.8°pgc. At the time of the observation the helmsman noted that he was heading 224°pgc and 222.5°psc. The variation is 2°E. What is the deviation for that heading?
N a. 2.0°E N b. 0.5°E Y c. 1.0°W N d. 1.5°W 1709: A stretch where the channel changes from one side of the river to the other is called a __________.
N a. bifurcation N b. transit Y c. crossing N d. changeover 1726: The highest point on your towboat is 57 feet above water. The Natchez Gage (mile 363.3 AHP) reads 16.7 feet. What is the vertical clearance when you pass under the Natchez - Vidalia (westbound) Hwy. Bridge?
Y a. 52.3 feet N b. 59.9 feet N c. 61.0 feet N d. 68.6 feet 1765: The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1530, 5 January, and last for six hours. What minimum speed over the ground must you make from Red River Landing Gage in order not to be delayed?
Y a. 6.2 mph N b. 6.4 mph N c. 6.8 mph N d. 7.3 mph 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 2240: At 1542 ZT, on 23 October , in DR position LAT 37° 28.5'N, LONG 156° 17.3'E, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 282.5°psc. The variation is 0.0°. What is the deviation?
Y a. 2.2°E N b. 2.2°W N c. 1.2°E N d. 1.2°W 2282: You observe the lower limb of the Sun at a sextant altitude (hs) of 42°44.0' on 22 June . The index error is 0.8' off the arc. The height of eye is 70 feet (21.3 meters). What is the observed altitude (Ho)?
N a. 42°19.8' N b. 42°21.7' Y c. 42°51.7' N d. 42°54.2' 2581: At 1732, Bartlett Reef Lt bears 016°psc. Race Rock Lt bears 125.5°psc with a radar range of 4.4 miles. What is the set and drift?
N a. 116°, 0.4 knot N b. 116°, 1.0 knot N c. 296°, 0.4 knot Y d. 296°, 1.0 knot 3080: If the speed necessary for reaching port at a designated time is 21.6 knots and the pitch of the propeller is 22.5 feet, how many revolutions per minute will the shaft have to turn, assuming a 2% positive slip?
N a. 81 N b. 87 N c. 95 Y d. 99 3110: You are turning 78 RPM, with a propeller pitch of 21 feet, and an estimated slip of -7%. What is the speed of advance?
N a. 14.9 knots N b. 15.7 knots Y c. 17.3 knots N d. 17.8 knots 10305: You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to a position one mile due south of Block Island Southeast Point Light?
N a. 070.0° N b. 076.5° Y c. 082.5° N d. 087.5° 10900: The abandoned lighthouse west of Cape Henry Light is __________.
N a. painted black and white N b. a low mound of rubble Y c. a gray, pyramidal structure N d. a steel skeleton structure 11906: 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 8.7 knots, the current is 130° at 1.2 knots, and a northerly wind causes 3° of leeway?
N a. 112°T N b. 108°T N c. 105°T Y d. 102°T 13507: Areas enclosed by a long and short dashed magenta line indicate __________.
N a. cable areas N b. dumping grounds Y c. fish trap areas N d. precautionary areas 14200: What is the length of the city wharf at The Dalles on the Columbia River?
N a. 20 feet Y b. over 1000 feet N c. 800 feet N d. 600 feet 14403: You are underway and steaming in an easterly direction on the Columbia River. After bringing Fisher Quarry Channel Range in line over your bow, you move to the left outside quarter of the channel. What should your fathometer read at this position, if the staff gauge at Portland reads +12.5 feet?
N a. 7.5 feet Y b. 32.5 feet N c. 41.5 feet N d. 51.5 feet 15064: At 0844, the range to the north end of Falkner Island is 2.0 miles and the left tangent bearing is 102°T. If the height of the tide is +1.0 foot, what is the approximate depth of the water under the keel?
N a. 14 ft (4.2 meters) Y b. 19 ft (5.8 meters) N c. 22 ft (6.7 meters) N d. 29 ft (8.8 meters) 15108: Your 1752 position places you __________.
Y a. less than 0.5 mile westward of York Spit Channel N b. less than 0.5 mile eastward of York Spit Channel N c. greater than 0.5 mile westward of York Spit Channel N d. greater than 0.5 mile eastward of York Spit Channel 15370: If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.
N a. 11.1 miles N b. 12.8 miles Y c. 15.6 miles N d. 18.0 miles 15459: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
Y a. LAT 36°59.5'N, LONG 76°18.4'W N b. LAT 36°59.0'N, LONG 76°21.6'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 15470: At 1119, Wolf Trap Light bears 268°T at 4.4 miles by radar. What were the set and drift since your 1037 fix?
N a. 178°, 0.5 knot N b. 358°, 0.5 knot N c. 178°, 0.7 knot Y d. 358°, 0.7 knot 15515: You decide to use the 9960-Y and 9960-W rates. At 1915,
you obtain the following readings:
9960-Y-43936.0
9960-W-14653.3
What is your 1915 position?
N a. LAT 41°13.0'N, LONG 71°54.0'W N b. LAT 41°13.1'N, LONG 71°53.9'W N c. LAT 41°13.2'N, LONG 71°54.3'W Y d. LAT 41°13.2'N, LONG 71°53.7'W 15661: At 0727, the cupola on Fishers Island is in line with Latimer Reef Light bearing 024°pgc. Based on this, the gyro error is __________.
N a. 2°E N b. 1°E N c. 0° Y d. 3°W 15867: You anticipate a maximum flood current north of Stratford Shoal. You will be set in which general direction?
N a. Northerly N b. Easterly N c. Southerly Y d. Westerly 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 16217: Which statement describes the shore between Watch Hill Point and Point Judith?
N a. Low, rocky cliffs with heavily wooded hills inland Y b. Sandy beaches broken by rocky points N c. Sand dunes and beaches with a mud and sand bottom N d. Wooded, barren hills with isolated prominent buildings 16238: At 2045, buoy "GM" is at a range of 6.45 miles. Hogsland buoy "12" is at a range of 5.25 miles.
Your vessel's position is __________.
N a. LAT 37°22.8'N, LONG 75°30.8'W Y b. LAT 37°22.3'N, LONG 75°31.7'W N c. LAT 37°22.0'N, LONG 75°29.3'W N d. LAT 37°21.8'N, LONG 75°30.7'W 16442: The area bounded by the buoys "C51" to "C47A" to "M6" to "M14", west of your anchorage, is __________.
N a. a training area for naval small craft N b. restricted to oil and mineral exploration N c. an anchorage for ammunition barges Y d. a fish trap area 16645: At 0630 you increase speed to 12.0 knots. At 0645 Race Rock Light bears 294°pgc. At 0700 Race Rock Light bears 293°pgc. Based on this, you should __________.
Y a. alter course to port N b. maintain course and speed N c. alter course to starboard N d. maintain course and reduce speed 16712: The two wavy magenta lines running to Green Hill Point represent __________.
N a. recommended approaches to Green Hill Point N b. the red sector of Point Judith Light N c. prohibited fishing areas Y d. submarine cables 16743: At 0040 you are south of Lewis Point when you receive word that the distress is terminated. You alter course to head for The Race. At 0052 you take the following relative bearings because the starboard gyro repeater is inoperative. Your heading at each bearing was 285°pgc. What is your 0052 position?
Race Rock Light 002°
Watch Hill Light 034°
Block Island North Light 122°
N a. LAT 41°08.8'N, LONG 71°41.4'W N b. LAT 41°09.0'N, LONG 71°42.3'W N c. LAT 41°09.0'N, LONG 71°41.1'W Y d. LAT 41°09.1'N, LONG 71°41.7'W 16841: At 0907 you change course to 224°T, and your speed is now 13.0 knots. At 0939 Chesapeake Light is bearing 168°T at a distance of 7.1 miles, and Cape Henry Light is bearing 246°T. What were the set and drift since 0907?
N a. 326°T at 0.7 knot N b. 326°T at 1.4 knots Y c. 146°T at 1.4 knots N d. 146°T at 0.7 knots