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.
52: You are downbound when you observe on your Mississippi River map a white square with a number inside located on either bank. This indicates __________.
Y a. a facilities display number N b. a river mile marker N c. a daybeacon N d. a river gage 185: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
Y a. 150°T at 1.6 knot N b. 150°T at 0.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 289: At 1930, you take a fix using the following radar ranges:
York Spit Light - 3.6 miles;
New Point Comfort Spit Light "2" - 2.0 miles;
York Spit Swash Channel Light "3" - 2.5 miles.
Your longitude is __________.
N a. 76°16.2'W N b. 76°16.5'W Y c. 76°16.8'W N d. 76°17.2'W 453: Determine the great circle distance and initial course from LAT 08°36.0'N, LONG 126°17.0'E to LAT 02°12.0'S, LONG 81°53.0'W.
N a. 9015 miles, 067°T N b. 9076 miles, 067°T N c. 9105 miles, 079°T Y d. 9076 miles, 079°T 462: Determine the great circle distance and initial course from LAT 12°45.2'N, LONG 124°20.1'E to LAT 33°48.8'N, LONG 120°07.0'W.
Y a. 6185.9 miles, 050.3°T N b. 6231.3 miles, 309.7°T N c. 6248.0 miles, 048.3°T N d. 6382.0 miles, 311.7°T 477: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 12°36.0'N, LONG 128°16.0'E is 8664 miles, and the initial course is 306.6°T. Determine the latitude of the vertex.
Y a. 37°30.2'N N b. 37°39.6'N N c. 37°48.2'N N d. 37°53.6'N 631: 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. 38.5 feet (11.7 meters) N b. 43.5 feet (13.2 meters) N c. 51.0 feet (15.5 meters) Y d. 59.5 feet (18.0 meters) 840: On 29 October , in DR position LAT 41°12.0'N, LONG 50°18.9'W, you take an ex-meridian observation of the Sun's lower limb, near upper transit. The chronometer time of the sight is 03h 21m 12s, and the chronometer error is 01m 50s slow. The sextant altitude (hs) is 34°54.2'. The index error is 2.0' on the arc, and your height of eye is 45 feet. What is the latitude at meridian transit?
N a. 41°12.0'N Y b. 41°16.0'N N c. 41°20.2'N N d. 41°23.6'N 981: On 20 September , your 0730 zone time position was LAT 28°58.0'N, LONG 152°26.0'W. Your vessel was steaming on course 225°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0931 ZT. The chronometer read 07h 29m 20s and was slow 02m 22s. The observed altitude (Ho) was 44°14.4'. LAN occurred at 1206 zone time. The observed altitude (Ho) was 62°49.5'. What was the longitude of your 1200 zone time running fix?
N a. LONG 153°32.5'W N b. LONG 153°27.2'W Y c. LONG 153°23.5'W N d. LONG 153°20.0'W 992: At 0100 zone time, on 23 September , your DR position is LAT 24°25.0'N, LONG 83°00.0'W. You are steering course 315°T. The speed over the ground is 10.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1100 running fix? NP-0002
Y a. LAT 25°35.3'N, LONG 84°17.0'W N b. LAT 25°42.6'N, LONG 84°18.7'W N c. LAT 25°30.4'N, LONG 84°28.6'W N d. LAT 25°28.3'N, LONG 84°34.3'W 1090: At 0450 zone time, on 25 June , your DR position is LAT 21°26.0'N, LONG 160°24.5'W. You are steering course 100°T at a speed of 10 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0514 running fix. NP-0020
N a. LAT 21°27.0'N, LONG 160°17.0'W Y b. LAT 21°25.0'N, LONG 160°18.0'W N c. LAT 21°22.0'N, LONG 160°17.0'W N d. LAT 21°20.0'N, LONG 160°15.5'W 1236: Which facility is located on the right descending bank at mile 363.6 AHP?
N a. River Cement Corps.. N b. Bunge Corps.. N c. T.L. James Y d. Vidalia Dock and Storage Co. 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 1661: On 11 May , in DR position LAT 28°13.7'N, LONG 168°36.3'E, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 283°psc. The chronometer reads 07h 13m 19s and is 02m 56s slow. Variation in the area is 13°E. What is the deviation of the standard magnetic compass?
N a. 5.2°W Y b. 5.6°W N c. 7.4°E N d. 7.8°E 1809: Which daymark would you see at Shields Bar Lt. (mile 882.2 AHP)?
N a. Red triangle N b. Green triangle Y c. Red diamond N d. Green square 1916: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 250°T at an observed altitude (Ho) of 31°01.2'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. Which star did you observe?
N a. Elnath Y b. Fomalhaut N c. Pollux N d. Markab 1929: You are taking a time tick using the 1930 signal from Rio de Janeiro, Brazil. You hear the preparatory signal "CQ DE PPE" repeated several times followed by a short dash (0.4 sec), 60 dots (0.1 sec each) and another short dash. At the beginning of the last dash, the comparing watch reads 07h 30m 13s. When compared to the chronometer, the comparing watch reads 07h 31m 56s, and the chronometer reads 07h 30m 21s. What is the chronometer error?
N a. 0m 13s fast N b. 1m 43s fast Y c. 1m 22s slow N d. 1m 48s slow 2171: On 8 August , at 0545 ZT, morning stars were observed, and the vessel's position was determined to be LAT 26°16.0'
S, LONG 94°16.0'E. Your vessel is steaming at 20.0 knots on a course of 346°T. A sextant observation of the Sun's lower limb is made at 0905 ZT. The chronometer reads 03h 02m 52s, and the sextant altitude (hs) is 38°07.5'. The index error is 5.2' off the arc, and the chronometer error is 2m 17s slow. Your height of eye on the bridge is 72 feet (22.0 meters). What is the observed altitude (Ho) and azimuth (Zn) of this sight using the assumed position?
Y a. 38°19.4', 048.4°T N b. 38°19.4', 131.6°T N c. 38°54.9', 048.4°T N d. 38°54.9', 131.6°T 2211: 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 2336: You have steamed 916 miles at 13 knots, and consumed 166 tons of fuel. If you have to steam 1325 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 14 knots?
N a. 133 tons N b. 181 tons N c. 207 tons Y d. 278 tons 2886: Your vessel is steering 074°T at 12 knots. At 0214 a light bears 115°T, and at 0223 the same light bears 135°T. What will be your distance off abeam?
N a. 2.4 miles Y b. 3.0 miles N c. 3.5 miles N d. 4.2 miles 3109: You are turning 90 RPM, with a propeller pitch of 24 feet, and an estimated slip of -3%. What is the speed of advance?
N a. 18.8 knots N b. 19.2 knots N c. 20.6 knots Y d. 21.9 knots 3609: Enroute from Rio to Montevideo, the true course is 215°; the gyro error is 2° west. A north wind causes 3° leeway. What course would you steer per gyrocompass to make good the true course?
Y a. 220°pgc N b. 214°pgc N c. 216°pgc N d. 210°pgc 3635: You desire to make good a true course of 236°. The variation is 8°E, magnetic compass deviation is 1°E, and gyrocompass error is 3°W. A south-southeasterly wind produces a 1° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?
Y a. 226°psc N b. 228°psc N c. 244°psc N d. 246°psc 3638: You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Y a. 003°psc N b. 005°psc N c. 007°psc N d. 009°psc 4007: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading of 166°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
Y a. 1.0°W N b. 1.0°E N c. 0.5°W N d. 0.5°E 10906: What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?
N a. +1.9 feet N b. -0.1 feet Y c. -0.4 feet N d. No correction is necessary 11001: What time will high water occur at Saybrook Jetty on the morning of 29 October 1983?
N a. 0145 N b. 0255 Y c. 0405 N d. 0920 11006: At what time will the first maximum flood occur 1 mile east of Old Field Point on 29 April 1983? (You are keeping daylight saving time ZD +4).
N a. 0957 N b. 1059 Y c. 1328 N d. 1423 11302: At 1614 your GPS position is LAT 37°01.6'N, LONG 75°31.7'W. At 1703 your position is LAT 36°57.0'N, LONG 75°41.0'W. What was the course made good between the fixes?
Y a. 238°T N b. 242°T N c. 247°T N d. 250°T 13701: Why are there no buoys charted at the approach to Sand Shoal Inlet (LAT 37°16'N, LONG 75°46'W)?
N a. No buoys are stationed there. N b. They frequently shift position due to heavy weather. Y c. They are frequently shifted to conform to the changing channel. N d. The buoys are being replaced with fixed lights. 13807: The chart symbol depicted at LAT 40°58.5'N, LONG 72°43.4'W indicates a(n) __________.
N a. abandoned lighthouse N b. light ship N c. wreck with only its mast visible Y d. wreck showing a portion of the hull above the sounding datum 14204: The mooring float at Beacon Rock State Park is restricted to pleasure boats and to periods not to exceed __________.
N a. 12 hours N b. 24 hours Y c. 36 hours N d. 48 hours 15216: Which of the following concerning Thimble Shoal Channel is TRUE?
N a. Only deep-draft passenger ships and large naval vessels may use the main channel. N b. The channel is 14.5 miles in length. Y c. A tow drawing 20 feet is excluded from the main channel. N d. Thimble Shoal Channel is in international waters. 15270: The distance from New London to the east entrance of the Cape Cod Canal is __________.
N a. 66 miles N b. 77 miles Y c. 89 miles N d. 136 miles 15306: Your 0200 position is LAT 37°23.5'N, LONG 76°09.2'W. Your speed is 8 knots, and your course is 095°T. Which statement is TRUE?
N a. The depth of the water in your vicinity is about 38 to 40 fathoms (69.1 meters to 72.7 meters). Y b. You are less than a mile from a sunken wreck which could interfere with your tow. N c. The closest major aid to navigation is New Point Comfort Light. N d. You will pass through a disposal area on your present course. 15457: What is the distance from Lamberts Point to Thimble Shoal Lt.?
N a. 9.0 miles N b. 9.8 miles N c. 10.6 miles Y d. 11.2 miles 15756: You are steering 087°pgc and turning for 6.8 knots. At 0600, you take the following bearings:
Little Gull Island Light bearing 085.5°pgc
Bartlett Reef Light bearing 043°pgc
What is your 0600 position?
Y a. LAT 41°12.1'N, LONG 72°13.8'W N b. LAT 41°12.1'N, LONG 72°14.6'W N c. LAT 41°12.3'N, LONG 72°14.7'W N d. LAT 41°12.5'N, LONG 71°14.9'W 15807: You are southeast of Saybrook Breakwater Light passing Saybrook Bar Lighted Bell Buoy "8". This buoy marks __________.
Y a. shoal water N b. a tide rips area N c. the junction with the Connecticut River N d. a sunken wreck 15958: Your 1752 position is __________.
N a. less than 0.2 mile to the west of York Spit Channel N b. less than 0.2 mile to the east of York Spit Channel Y c. more than 0.2 mile to the west of York Spit Channel N d. more than 0.2 mile to the east of York Spit Channel 15962: Based on dead reckoning, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone N b. depart a restricted area N c. cross a submerged pipeline Y d. depart a regulated area 16117: What is the distance from your 0731 fix to Wilmington, N.C.
(LAT 34°14.0'N, LONG 77°57.0'W)?
Y a. 339 miles N b. 363 miles N c. 402 miles N d. 486 miles 16140: Available information indicates that there is a set and drift in this area of 290°T at 2 knots. Allowing for this set and drift, what course must you steer to make good a true course of 150°, while maintaining an engine speed of 13 knots, from your 1930 position?
N a. 141°T Y b. 145°T N c. 149°T N d. 153°T 16257: If your engines turn for 6.5 knots, and you encounter a 0.5 knot southerly current after weighing anchor. What is your ETA at point A?
N a. 0511 N b. 0501 Y c. 0450 N d. 0440 16268: As you pass between trestle "B" and trestle "C" of the Chesapeake Bay Bridge - Tunnel, you sight along the trestle "C" when it is in line. The gyro bearing is 048°. What is the gyro error by observation?
N a. 4°E Y b. 1°E N c. 0° N d. 2°W 16407: At 0227, you are on course 087°T at 10 knots. What course per standard magnetic compass should you steer to make good your true course?
N a. 099°psc N b. 102°psc Y c. 105°psc N d. 109°psc 16510: At 0728, Race Rock Light is bearing 282°T at 3.8 miles,
and the closest point on Fishers Island is at a radar range of 2.0 miles. What speed have you been making since you changed course at 0705?
N a. 9.2 knots Y b. 9.8 knots N c. 10.6 knots N d. 11.4 knots 16541: At 2255 you take the following visual bearings.
Saybrook Breakwater Light 333°pgc
Little Gull Island Light 094°pgc
Horton Point Light 211°pgc
What is your position?
Y a. LAT 41°13.6'N, LONG 72°19.2'W N b. LAT 41°13.8'N, LONG 72°19.6'W N c. LAT 41°14.0'N, LONG 72°19.0'W N d. LAT 41°14.2'N, LONG 72°19.7'W 16641: At 0455 you encounter fog and slow to 5 knots. At 0500, you obtain a radar fix from the following information:
Radar range to Montauk Point is 9.1 miles.
Tangent bearing to western edge of Block Is. Is 015°pgc.
Distance off the nearest part of Block Is. is 5.9 miles.
What is your 0500 position?
N a. LAT 41°02.8'N, LONG 71°39.5'W N b. LAT 41°02.9'N, LONG 71°39.8'W N c. LAT 41°03.1'N, LONG 71°39.6'W Y d. LAT 41°03.5'N, LONG 71°39.3'W