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.
159: You are turning for 6.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
N a. 8.8 mph N b. 8.2 mph Y c. 7.8 mph N d. 6.8 mph 212: If you were to head into Fishers Island Sound, which of the following charts would you switch to for better detail of Mystic and Mystic Harbor?
N a. 13209 N b. 13212 Y c. 13214 N d. 13215 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 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 372: If you change course at 0610, what is the course to steer to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 084°pgc Y b. 080°pgc N c. 076°pgc N d. 072°pgc 417: A vessel at LAT 21°32'N, LONG 160°30'W, heads for a destination at LAT 30°00'N, LONG 150°00'E. Determine the true course and distance by Mercator sailing.
N a. 273°T, 2645 miles N b. 273°T, 2692 miles Y c. 281°T, 2733 miles N d. 284°T, 2762 miles 529: You depart LAT 51°48.0'S, LONG 178°35.0'W and steam 179 miles on course 270°. What is the longitude of arrival?
N a. 173°47'W N b. 174°27'E Y c. 176°36'E N d. 179°52'W 548: You are bound for New London. Where will you cross the demarcation line and be governed by the Inland Rules of the Road?
N a. You are already governed by the Inland Rules. N b. Above the Thames River Bridge Y c. In the Race N d. You will not be governed by the Rules. 624: You are on a voyage from San Diego, CA, to New York, NY. The distance from pilot to pilot is 4860 miles. The speed of advance is 15.0 knots. You estimate 18 hours for bunkering at Colon, and 14 hours for the Panama Canal transit. If you take departure at 0836 hours (ZD +7), 4 July, what is your ETA (ZD +4) at New York?
N a. 0336, 20 July N b. 0036, 19 July N c. 0336, 19 July Y d. 0736, 19 July 653: On which voyage would a great circle track be significantly shorter than a rhumb line track? (Use gnomonic tracking chart WOXZC 5274)
Y a. Savannah, GA, to Lisbon, Portugal N b. Dublin, Ireland (Irish Sea), to La Coruna, Spain (LAT 43°22'N, LONG 8°24'W) N c. Reykjavik, Iceland, to Lisbon, Portugal N d. Boston to Sable Island 679: Using gnomonic tracking chart WOXZC 5270, determine which of the following statements about a voyage from San Francisco to San Bernardino Strait (LAT 13°00'N, LONG 125°30'E) is TRUE.
N a. A composite sailing should be used to avoid the Bonin Islands. N b. Distance is measured using the length of a degree of longitude at the point of tangency. Y c. You will cross the Northern Hemisphere vertex at the approximate longitude of 159°W. N d. The entire track line is west of the Northern Hemisphere vertex. 998: On 23 May , your 0628 zone time position was LAT 28°18.0'S, LONG 102°42.0'E. Your vessel was steaming on course 040°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0758 ZT. The chronometer read 01h 02m 06s and was fast 04m 04s. The observed altitude (Ho) was 13°16.7'. LAN occurred at 1201 zone time. The observed altitude (Ho) was 42°32.0'. What was the longitude of your 1201 zone time running fix?
N a. 103°57.9'E N b. 104°00.4'E Y c. 104°03.5'E N d. 104°06.3'E 1141: Which daymark will you see as you approach Natchez Beam Lt. (mile 364.8 AHP)?
Y a. Red triangle N b. White square N c. Green square N d. Red diamond 1484: On 7 December , your vessel's 0835 zone time DR position is LAT 28°30.0'N, LONG 125°39.3'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 04h 34m 48s, and the Sun is bearing 113° per standard magnetic compass. The chronometer error is 01m 24s slow, and the variation in the area is 13.0°E. What is the deviation of the standard magnetic compass?
N a. 0.7°E N b. 1.0°W Y c. 2.3°E N d. 3.0°W 1539: As you approach Vaucluse Bend Light (mile 533.8 AHP),
which type of daymark would you see on the light structure?
N a. Red diamond N b. Red triangle Y c. Green square N d. Green diamond 1702: You are upbound approaching Springfield Bend Lt. (mile 244.8 AHP) downriver from Profit Island. Which of the following statements is TRUE?
Y a. Profit Island Chute is closed to navigation. N b. Tow length must not exceed 600 feet to use Profit Island Chute. N c. Tows must navigate toward left ascending bank when passing Profit Island Chute. N d. Profit Island Chute is open to navigation and is a shortcut for single barge tows. 1727: You pass under the Natchez bridge (mile 363.3 AHP) at 1300, on 27 March, and estimate the current to be 3.3 mph. What is your ETA at St. Louis if you continue to turn for 7.5 mph?
N a. 0617, 4 April Y b. 0316, 4 April N c. 1153, 30 March N d. 1253, 31 April 1729: Which light characteristics does Coggins Lt. (mile 429.5) have?
N a. 1 red flash every 4 seconds Y b. 1 white flash every 4 seconds N c. 1white flash every 5 seconds N d. 2 white flashes every 4 seconds 1730: What is the distance from Arkansas City, AR, to St. Louis, MO, on the Mississippi River System?
Y a. 584 miles N b. 617 miles N c. 733 miles N d. 832 miles 1731: What is the total length of the trip?
N a. 910.6 miles Y b. 901.2 miles N c. 900.3 miles N d. 873.7 miles 1888: On 8 April , your evening DR position is LAT 22°16.0'N, LONG 157°58.3'W. You observe an unidentified star bearing 238°T at an observed altitude (Ho) of 50°02.7'. The chronometer reads 05h 09m 57s, and is 01m 23s slow. What star did you observe?
N a. Betelgeuse N b. Aldebaran Y c. Alnilam N d. Bellatrix 2050: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 30 feet 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) 2106: 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 a point one half mile north of 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. 207°psc N b. 213°psc N c. 220°psc Y d. 235°psc 2403: At 0812 you obtain the following information:
Chesapeake Light bearing 091° true @ a range of 10.5 nm
What is your 0812 position?
N a. LAT 36°53.7'N, LONG 75°56.0'W N b. LAT 36°53.8'N, LONG 75°56.1'W Y c. LAT 36°54.4'N, LONG 75°55.9'W N d. LAT 36°54.6'N, LONG 75°55.8'W 2583: You lose GPS and are navigating solely on LORAN. What LORAN line would you follow to leave Six Mile Reef buoy "8C" abeam to port at 1.0 mile?
N a. 9960-W-14885.0 N b. 9960-Y-43980.5 Y c. 9960-Y-43982.0 N d. 9960-Y-43983.5 2676: While on a course of 019°pgc, a light bears 14° on the port bow at a distance of 15.3 miles. What course should you steer to pass 1.5 miles abeam of the light, leaving it to port?
N a. 006°pgc Y b. 011°pgc N c. 013°pgc N d. 015°pgc 2704: You are underway on course 340°T at a speed of 14.8 knots.
You sight a buoy bearing 342°T at a radar range of 4.8 miles at 1422. If you change course at 1428, what is the true course to steer to leave the buoy abeam to port at 1.0 mile?
N a. 327°T N b. 354°T N c. 357°T Y d. 001°T 2706: While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of the light leaving it to port?
N a. 208°pgc N b. 210°pgc N c. 212°pgc Y d. 214°pgc 2856: Your vessel is on a course of 034°T at 17 knots. At 0551 a light bears 056.5°T, and at 0623 the light bears 079°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0636, 5.9 miles N b. 0646, 5.9 miles N c. 0636, 6.4 miles Y d. 0646, 6.4 miles 2863: Your vessel is underway on a course of 115°T at 18 knots. At 1850 a lighthouse bears 137.5°T. At 1920, the same lighthouse bears 160°T. What time will the lighthouse pass abeam to starboard?
N a. 1929 Y b. 1941 N c. 1949 N d. 1955 2897: You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?
N a. 8.5 miles Y b. 8.9 miles N c. 9.2 miles N d. 9.7 miles 3290: While steaming at 15.5 knots, your vessel consumes 333 barrels of fuel oil per day. In order to reduce consumption to 176 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 11.3 knots Y b. 12.5 knots N c. 13.6 knots N d. 14.8 knots 3300: You have steamed 156 miles and consumed 19 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 273 miles?
N a. 23.6 tons N b. 27.9 tons Y c. 33.3 tons N d. 37.2 tons 4008: 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 037°.
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. 1.5°W N c. 1.5°E N d. 2.0°E 10502: At 1239 your GPS indicates a position of LAT 36°55.2'N, LONG 75°33.1'W. You are on course 281° per standard magnetic compass at a speed of 9.2 knots. At 1318 your GPS indicates your position as LAT 36°54.8'N, LONG 75°39.8'W. What were the set and drift?
Y a. 130°T at 1.2 knots N b. 156°T at 0.6 knot N c. 352°T at 1.3 knots N d. 335°T at 1.0 knot 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 11908: 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 7.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 117°T N b. 112°T N c. 104°T N d. 102°T 12205: Your vessel is steady on a heading of 160° per standard magnetic compass when you sight Southwest Ledge Light and New Haven Outer Channel Range Rear Light in line dead astern. What is the deviation of the compass based on this observation?
Y a. 2°E N b. 2°W N c. 5°E N d. 5°W 12506: You are on course 203° per standard magnetic compass when you take the following bearings: New Point Comfort Spit Light 2 267°psc Horn Harbor Entrance Light HH 304°psc Wolf Trap Light 006°psc What is the position of the fix?
N a. LAT 37°18.9'N, LONG 76°10.4'W Y b. LAT 37°18.8'N, LONG 76°10.8'W N c. LAT 37°18.7'N, LONG 76°11.1'W N d. LAT 37°18.5'N, LONG 76°10.7'W 13410: You plan to anchor your vessel at LAT 41°05.1'N, LONG 72°59.3'W. Assuming that normal conditions exist, how much anchor cable should you put out?
N a. 150 to 300 feet N b. 300 to 440 feet Y c. 440 to 600 feet N d. 640 to 750 feet 15340: At 1718, Bartlett Reef Light bears 050°T at a distance of 1.5 miles. From this position, you change course to 128°
T. At 1750 Race Rock Light bears 336°T, Little Gull Island Light bears 285°T, and Montauk Point Light bears 134°T. What were the set and drift of the current you encountered since 1718?
N a. 245°T at 0.9 knots N b. 245°T at 1.7 knots Y c. 065°T at 1.7 knots N d. 065°T at 0.9 knots 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 15818: At 0300, your position is LAT 41°01.7'N, LONG 72°55.1'W. From this position you steer a course of 289° per standard magnetic compass at an engine speed of 10.0 knots. At what time can you first expect to see Stratford Shoal Middle Ground Light if the luminous range is 8.0 miles?
Y a. 0303 N b. 0309 N c. 0312 N d. 0318 15858: 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 a position one mile North of Mattituck Breakwater Light "MI". If there are no set and drift, what course should you steer per gyro compass?
N a. 219°pgc Y b. 222°pgc N c. 225°pgc N d. 228°pgc 15964: Your 1900 position is LAT 37°12.9'N, LONG 76°13.5'W. You change course to 323°pgc. What is the course per standard magnetic compass?
N a. 309°psc N b. 311°psc Y c. 329°psc N d. 331°psc 16018: At 0550, engineering repairs are complete and speed is increased to 9.6 knots. At 0630, Falkner Island Light bears 023°pgc and Horton Point Light bears 097°pgc. From your 0630 fix you steer to make good a course of 086°T while turning for 9.6 knots. At 0700, Falkner Island Light bears 336.0°pgc and Horton Point Light bears 105.5°pgc. The radar range to the south tip of Falkner Island is 5.7 miles. Which statement is TRUE?
N a. Your course made good from 0630 to 0700 was 082°T. N b. The speed made good from 0630 to 0700 was 10.1 knots. N c. The current from 0630 to 0700 was 279°T at 0.6 knot. Y d. You are making good your intended speed. 16144: From your 2027 position you change course to 106°T, while maintaining an engine speed of 18 knots. Your ETA at a position where Block Island Sound South Entrance Obstruction Lighted Buoy "BIS" is abeam is __________.
N a. 2039 N b. 2043 N c. 2047 Y d. 2050 16214: From your 0715 position, you set a course of 085°T. At 0745 you take the following bearings:
Race Rock Light 278°pgc
Watch Hill Light 049°pgc
Fisher's Island East Harbor Cupola 010°pgc
What was the current encountered between 0715 and 0745?
N a. Set 030°T, drift 0.4 knot N b. Set 216°T, drift 0.3 knot Y c. Set 070°T, drift 0.6 knot N d. Set 238°T, drift 1.0 knot 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