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.
77: You pass Morrison Towhead Light (mile 890.5 AHP) at 1723. What was your average speed since leaving Cairo?
N a. 8.8 mph Y b. 8.5 mph N c. 7.8 mph N d. 7.5 mph 88: What is the vertical clearance between the highest point of your towboat, if it is 58 feet above the water, and if the Natchez Gage reads 28.13 feet when passing under the Natchez Upper Highway Bridge?
N a. 45.4 feet Y b. 39.3 feet N c. 33.2 feet N d. 15.9 feet 173: At 2015, you alter course to 154°pgc. What is the course per standard magnetic compass (psc)?
N a. 142°psc N b. 152°psc N c. 157°psc Y d. 162°psc 287: If the visibility is 11 miles, what is the luminous range of New Point Comfort Spit Light "4"?
N a. 6.5 mile Y b. 5.0 miles N c. 3.3 miles N d. 2.0 miles 376: You depart LAT 40°42.0'N, LONG 74°01.0'W, and steam 3365.6 miles on course 118°T. What is the longitude of your arrival by Mercator sailing?
N a. 24°29.0'W N b. 22°58.0'W Y c. 17°41.0'W N d. 10°46.0'W 434: As you enter the New Haven Outer Channel, you sight the outer range markers in line directly ahead. Your heading at this time is 347°psc. What is your compass deviation by observation?
N a. 4.5°West N b. 3.5°West N c. 3.0°East Y d. 0.5°East 577: At 1015, you estimate you have 139 miles to complete the voyage. If you average 9.5 knots, you will complete the voyage in __________.
N a. 14 hours 44 minutes Y b. 14 hours 38 minutes N c. 14 hours 30 minutes N d. 14 hours 22 minutes 599: Which town is located at mile 663.5 AHP?
Y a. Helena N b. Friers Point N c. St. Francis N d. Rodney 641: At 1032 on 24 June, you pass Carolina Landing Light(508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
Y a. 0.5 mph N b. 1.5 mph N c. 5.7 mph N d. 8.5 mph 744: On 22 May , at 0440 ZT, your vessel's DR position is LAT 23°24'N, LONG 110°24'W. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 23°40.9' with an index error of 1.6' on the arc. Your chronometer reads 11h 42m 14s, and is 2m 36s fast. What is your latitude by Polaris, given a height of eye of 24 feet?
N a. 23°28.6'N N b. 23°30.0'N Y c. 23°31.2'N N d. 23°32.8'N 815: On 13 October , your 0515 zone time fix gives you a position of LAT 26°53.0'N, LONG 90°05.0'W. Your vessel is on course 068°T, and your speed is 7.8 knots. Local apparent noon (LAN) occurs at 1145 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 54°51.5'. What is the latitude at 1200 ZT?
Y a. 27°13.3'N N b. 27°14.6'N N c. 27°15.7'N N d. 27°16.8'N 819: On 27 March , in DR position LAT 32°31.0'N, LONG 76°25.0'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 05h 23m 32s, and the chronometer error is 01m 30s fast. The sextant altitude (hs) is 59°59.0'. The index error is 1.8' off the arc, and your height of eye is 52 feet. What is the latitude at meridian transit?
N a. LAT 32°21.6'N Y b. LAT 32°29.5'N N c. LAT 32°37.6'N N d. LAT 32°46.2'N 976: On 7 November , your 0830 zone time position was LAT 27°36.0'N, LONG 162°19.0'W. Your vessel was steaming on course 289°T at a speed of 19.0 knots. An observation of the Sun's lower limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow 01m 51s. The observed altitude (Ho) was 38°21.1'. Local Apparent Noon (LAN) occurred at 1138 zone time. The observed altitude (Ho) was 45°35.0'. What was the longitude of your 1200 zone time running fix?
Y a. 163°38.8'W N b. 163°34.0'W N c. 163°30.2'W N d. 163°26.0'W 1084: On 4 Dec. , your 1500 ZT DR position is LAT 18°06.0'N, LONG 75°42.0'W. You are on course 020°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1548 running fix.
N a. LAT 18°10.3'N, LONG 75°34.5'W N b. LAT 18°12.6'N, LONG 75°42.0'W N c. LAT 18°14.0'N, LONG 75°40.0'W Y d. LAT 18°17.3'N, LONG 75°37.7'W 1134: What company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)?
N a. Helena Port Terminal, Inc. Y b. Riceland Food Corps.. N c. Quincy Soybean Co. N d. Texas Eastern Pipeline Co. 1180: On 3 May , your 1009 zone time DR position is LAT 30°01.0'N, LONG 123°15.0'W. Your vessel is on course 330°T at a speed of 8.6 knots. What is the zone time of local apparent noon (LAN)?
N a. 1206 N b. 1208 Y c. 1211 N d. 1214 1216: It is 8 March and you are keeping zone time -3. You are on course 104°T, speed 21 knots. Your 0830 DR position is LAT 25°35.0'S, LONG 66°34.0'E. What is the time of the second estimate of LAN by ship's clocks?
Y a. 10h 41m 26s N b. 11h 15m 34s N c. 11h 17m 32s N d. 11h 36m 54s 1475: On 26 February , your vessel's 1615 ZT DR position is LAT 25°14'S, LONG 57°22'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 8h 13m 19s, and the Sun is bearing 266.0° per standard magnetic compass. The chronometer error is 01m 46s slow, and the variation in the area is 6°E. What is the deviation of the standard compass?
Y a. 1.7°E N b. 3.4°W N c. 7.7°E N d. 13.7°E 1663: On 7 April , in DR position LAT 27°42.0'N, LONG 114°03.0'W, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 076°psc. The chronometer reads 02h 10m 17s and is 01m 52s slow. Variation in the area is 8°E. What is the deviation of the standard magnetic compass?
Y a. 1.8°W N b. 2.3°E N c. 6.2°E N d. 7.8°W 1921: On 17 March , your 1845 DR position is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing 340°T at an observed altitude (Ho) of 66°25.1'. The chronometer reads 10h 47m 49s, and is 1m 54s fast. What star did you observe?
Y a. Capella N b. Mirfak N c. Pollux N d. Rigel 1927: At 1554, on 25 May, you pass Huntington Point Light (mile 555.2 AHP). What was your average speed since departing Amoco Pipeline Co. DockS (253.6 AHP)?
N a. 6.9 mph Y b. 6.2 mph N c. 4.8 mph N d. 4.3 mph 2030: Which of the following statements regarding buoys on the Mississippi River is TRUE?
Y a. Buoys should be given as wide a berth as possible in passing. N b. Buoy positions on the chart are exact. N c. The buoys are maintained on station year round. N d. The buoys do not shift positions due to permanent moorings. 2100: From your 2118 position, you are steering 288°T at an engine speed of 7.0 knots. If visibility is suddenly reduced to 2 miles, at what time can you expect Old Point Comfort Light to become visible again?
N a. The light is visible at 2118. N b. 2155 N c. 2220 Y d. 2232 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 2873: Your vessel is on a course of 103°T at 14 knots. At 1918 a light bears 129.5°T, and at 1937 the light bears 148°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 1947, 2.8 miles N b. 1950, 3.2 miles N c. 1953, 3.8 miles Y d. 1956, 4.4 miles 3260: You have steamed 726 miles at 17.5 knots, and consumed 138 tons of fuel. If you have 252 tons of usable fuel remaining, how far can you steam at 13.5 knots?
N a. 789 miles N b. 1326 miles N c. 1719 miles Y d. 2228 miles 3296: Your vessel consumes 199 barrels of fuel per day at a speed of 14.5 knots. What will be the fuel consumption of your vessel at 10.0 knots?
Y a. 65 bbls N b. 95 bbls N c. 137 bbls N d. 148 bbls 3620: Your vessel is steering course 197°psc, variation for the area is 7°E, and deviation is 4°W. The wind is from the west, producing a 2° leeway. Which true course are you making good?
N a. 192°T N b. 196°T Y c. 198°T N d. 202°T 10200: YourGPS position is LAT 41°10.0'N, LONG 72°52.5'W. What is the course per standard magnetic compass to a position one mile due south of Falkner Island Light?
N a. 065°psc N b. 081°psc Y c. 093°psc N d. 097°psc 11002: What was the height of the high water at Saybrook Jetty on the afternoon of 18 February 1983?
N a. 1.4 ft. N b. 2.0 ft. N c. 2.4 ft. Y d. 2.9 ft. 11308: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2011 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
Y a. 13.7 knots N b. 12.0 knots N c. 11.6 knots N d. 10.9 knots 11505: At 1014 you depart the entrance to Lake Montauk with light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1230 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
N a. 8.0 knots N b. 8.3 knots Y c. 8.6 knots N d. 8.9 knots 11506: At 1014 you depart the entrance to Lake Montauk with Light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1238 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
Y a. 8.2 knots N b. 8.6 knots N c. 8.9 knots N d. 9.2 knots 11708: Your position is LAT 37°00.9'N, LONG 75°30.0'W. What is the course to steer per magnetic compass to arrive at LAT 36°59.0'N, LONG 75°48.5'W, if you are turning for 7.8 knots the current is 339°T at 1.3 knots, and a northwesterly wind is causing 3° of leeway?
Y a. 265°psc N b. 267°psc N c. 269°psc N d. 271°psc 12308: You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 094° per standard magnetic compass. If your vessel was heading 207° per standard magnetic compass at the time, which of the following is TRUE?
Y a. The deviation table is correct for that heading. N b. The deviation by observation is 3°E. N c. The compass error is 12°W. N d. You should subtract 18° from all bearings of 094°. 12702: You are on course 282° per standard magnetic compass when you take the following bearings: Point Judith Light - 073°psc Block Island North Light - 156°psc Watch Hill Point Light - 293°psc What is your position?
Y a. LAT 41°17.0'N, LONG 71°38.2'W N b. LAT 41°17.1'N, LONG 71°39.1'W N c. LAT 41°17.2'N, LONG 71°38.7'W N d. LAT 41°17.2'N, LONG 71°37.8'W 12709: You are on course 157° per standard magnetic compass when you take the following bearings: Little Gull Island Light 276°psc Race Rock Light 301°psc Latimer Reef Light 028°psc What is your position?
N a. LAT 41°13.5'N, LONG 71°57.9'W Y b. LAT 41°13.5'N, LONG 71°57.4'W N c. LAT 41°13.6'N, LONG 71°57.0'W N d. LAT 41°13.6'N, LONG 71°57.8'W 13509: Sounding contours in unshaded water areas are at what interval?
N a. 10 foot up to 100 ft depths then at 30 foot intervals Y b. 30 foot intervals N c. 10 fathom intervals N d. The interval will vary to ensure any major underwater hazard is highlighted. 13703: NOAA weather broadcasts can be received on what frequency while navigating off Cape Henry?
N a. 162.45 MHz Y b. 162.55 MHz N c. 162.65 MHz N d. 162.70 MHz 15026: The highest point on your towboat is 53 feet above the water, and the Helena Gage (mile 663 AHP) reads 6.7 feet. What is the vertical clearance when you pass under the Helena Highway Bridge in Helena?
Y a. 59.9 feet N b. 62.5 feet N c. 64.1 feet N d. 65.5 feet 15110: From your 1752 position, you steer 307°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light 232°pgc.
Chesapeake Bay Tunnel North Light 130°pgc.
What are the latitude and longitude of you 1805 position?
N a. LAT 37°06.1'N, LONG 76°08.1'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.9'N, LONG 76°07.7'W Y d. LAT 37°05.9'N, LONG 76°08.0'W 15207: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
N a. 6 knots N b. 8 knots N c. 10 knots Y d. 12 knots 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 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 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 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 16020: If visibility permits, Orient Point Light will break the horizon at a range of about __________.
N a. 9.3 miles N b. 10.8 miles Y c. 13.9 miles N d. 17.0 miles 16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?
N a. 5.0 knots N b. 5.3 knots N c. 5.8 knots Y d. 5.5 knots 16114: As you pass through the Chesapeake Bay Bridge and Tunnel,
you sight Trestle "A" in line bearing 198°pgc. What is the gyro error?
N a. 2°E N b. 0°E Y c. 2°W N d. 4°W 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 16742: At 2352 you hear a MAYDAY call from a vessel reporting her position as 1.5 miles due east of Block Island Southeast Point Light. What is the course to steer, per gyrocompass to the distress site, if you change course at midnight and allow 1° leeway for easterly winds?
N a. 049.5°pgc N b. 052.5°pgc N c. 055.5°pgc Y d. 059.0°pgc 16838: At 0800 you obtain the following Loran-C readings:
9960-X-27101
9960-Y-41612
9960-Z-58737
What is your vessel's position?
N a. LAT 37°20.9'N, LONG 75°29.5'W Y b. LAT 37°21.0'N, LONG 75°32.0'W N c. LAT 37°19.8'N, LONG 75°30.6'W N d. LAT 37°20.8'N, LONG 75°31.2'W 16840: Visibility is exceptionally clear. At approximately what distance did Chesapeake Light become visible?
N a. 19.2 miles Y b. 21.0 miles N c. 22.7 miles N d. 24.0 miles