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.
61: What is the width of the navigable channel at Grand Gulf Island Light (mile 404.9 AHP) ?
Y a. 0.455 mile N b. 0.62 miles N c. 0.71 mile N d. 0.8 miles 63: In addition to the Army Corps. of Engineers maps, data on bridge clearances may be found in the __________.
Y a. Light List N b. Waterways Journal N c. Army Corps. of Engineers Regulations N d. Channel Report 226: At 2000, your position is LAT 37°04.1'N, LONG 76°05.6'W. You change course for the Eastern Shore. At 2037, Old Plantation Flats Light bears 033°pgc, and York Spit Light bears 282°pgc. The course made good from your 2000 position is __________.
N a. 020°T N b. 014°T N c. 006°T Y d. 359°T 233: At 0725, you are heading 054°T, and Stratford Point Light is abeam to port at 3.1 miles. The current is 135°T at 1.8 knots. If you make turns for an engine speed of 8 knots, which course must you steer to make good 048°T?
N a. 055°T N b. 047°T N c. 042°T Y d. 035°T 245: On chart 12354, the datum from which heights of objects are taken is __________.
N a. lowest low water N b. mean low water Y c. mean high water N d. mean lower low water 310: A vessel at LAT 28°20'N, LONG 16°00'W is to proceed to LAT 21°00'N, LONG 18°00'W. What is the course and distance by mid-latitude sailing?
Y a. 194.0°T, 453.0 miles N b. 195.2°T, 451.0 miles N c. 196.8°T, 450.0 miles N d. 197.3°T, 448.0 miles 320: At 2150, your position is LAT 36°57.2'N, LONG 76°01.3'W. In this position on the chart, you note a light magenta line running in a direction of 030°T. This line indicates the limits of __________.
Y a. a pilotage area N b. a precautionary area N c. the Cape Henry Light red sector N d. chart 12222 329: The engineer has advised that it will be necessary to secure the gyrocompass and the electronic equipment. From your 0315 position, what is your course per standard magnetic compass to York Spit Channel Buoy "38", if there is no current?
N a. 218°psc Y b. 216°psc N c. 214°psc N d. 212°psc 383: From point "A", you lay out an intended track line to a point where Block Island North Light bears 180°T at 2.9 miles (Point "B"). What is the length of this leg of the voyage?
Y a. 24.4 miles N b. 23.9 miles N c. 23.7 miles N d. 20.4 miles 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 1080: On 20 Feb. , your 0530 ZT DR position is LAT 24°15.0'N, LONG 137°33.0'W. You are on course 033°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0010
N a. LAT 24°23.3'N, LONG 137°35.5'W N b. LAT 24°26.0'N, LONG 137°25.8'W Y c. LAT 24°27.5'N, LONG 137°31.8'W N d. LAT 24°30.1'N, LONG 137°24.5'W 1088: On 9 June , your 0000 DR position is LAT 26°14.0'S, LONG 176°38.1'E. You are on course 223°T, speed 17.8 knots. You observed 4 celestial bodies. Determine the latitude and longitude of your 0630 running fix.
Y a. LAT 27°44.7'S, LONG 174°57.1'E N b. LAT 27°46.2'S, LONG 175°03.0'E N c. LAT 27°41.2'S, LONG 175°01.2'E N d. LAT 27°38.5'S, LONG 175°06.3'E 1232: The Vaucluse Trench fill revetment on the LMR extends from mile __________.
N a. 524.3 - 522.6 RDB Y b. 535.6 - 532.9 RDB N c. 535.9 - 534.3 LDB N d. 534.3 - 532.6 LDB 1261: On 16 February , your 0300 ZT DR position is LAT 28°32.0'S, LONG 176°49.0'E. You are on course 082°T at a speed of 21 knots. What will be the zone time of sunrise at your vessel?
N a. 0534 Y b. 0552 N c. 0631 N d. 0645 1303: On which map would you find Redman Point, Arkansas?
Y a. 20 N b. 38 N c. 45 N d. 60 1343: At 1019, on 10 March, you pass under the Greenville Bridge (mile 531.3 AHP). What was your average speed since departing River Cement Co. Dock?
Y a. 7.2 mph N b. 6.8 mph N c. 6.5 mph N d. 6.2 mph 1464: On 17 May , your 1554 zone time DR position is LAT 26°33.0'N, LONG 65°46.0'W. At that time, you observe the Sun bearing 269°psc. The chronometer reads 07h 55m 47s, and the chronometer error is 01m 14s fast. The variation is 3°W. What is the deviation of the standard magnetic compass?
N a. 0.6°E N b. 1.6°W N c. 4.6°W Y d. 7.6°E 1498: On 7 December , your 0350 ZT position is LAT 35°42'N, LONG 17°38'E. You observe Polaris bearing 359.7°pgc. At the time of the observation the helmsman noted that he was heading 016°pgc and 014°psc. The variation is 1°E. What is the deviation for that heading?
Y a. 0.3°E N b. 1.5°E N c. 0.3°W N d. 1.5°W 1499: On 16 June , your 0430 zone time DR position is LAT 29°24.0'S, LONG 36°16.0'E. At that time, you observe Vega bearing 341.0°psc. The chronometer reads 02h 32m 06s, and the chronometer error is 01m 54s fast. The variation is 20.5°W. What is the deviation?
N a. 3.2°E N b. 3.2°W Y c. 2.4°W N d. 2.8°E 1737: At 1227, on 19 October, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 1045 the following day?
N a. 5.2 mph N b. 5.6 mph Y c. 5.9 mph N d. 6.3 mph 1759: The Greenville Gage reads 1.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
Y a. 74.5 feet N b. 64.2 feet N c. 55.5 feet N d. 44.4 feet 1781: At 1524 ZT, on 14 June , in DR position LAT 30°51'N, LONG 30° 02'W, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 103.9°pgc. The variation is 10°W. What is the gyro error?
N a. 1.8°W N b. 2.4°E N c. 2.2°E Y d. 2.0°E 1874: On 2 October , your 1845 DR position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through a hole in the clouds at a sextant altitude (hs) of 25°19.4' bearing 273°T. The index error is 1.3' off the arc, and the height of eye is 42 feet. The chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe?
N a. Alpha Serpentis Y b. Beta Librae N c. Beta Lupi N d. Epsilon Bootis 1951: As you approach Ashland Light (mile 378.1 AHP) which daymark would you see?
Y a. Red triangle N b. Red diamond N c. Green square N d. Green diamond 2049: What is the length of the trip?
N a. 405.8 miles Y b. 904.0 miles N c. 1002.0 miles N d. 1136.8 miles 2118: You are northwest of Port Jefferson Harbor steering 242°
per standard magnetic compass. As you continue westward, you see that the Port Jefferson Range Front Light and Rear Light come into line. If the deviation table is correct, the bearing of the range should be __________.
N a. 140°psc N b. 146°psc Y c. 157°psc N d. 160°psc 2154: On 30 June , at 0630 zone time, morning stars were observed, and the vessel's position was determined to be LAT 25°15.0'S, LONG 175°36.0'E. Your vessel is steaming at 16.0 knots on a course of 302°T. A sextant observation of the Sun's lower limb is made at 1015 zone time. The chronometer reads 10h 14m 38s, and the sextant altitude is 32°07.9'. The index error is 4.5' on the arc, and the chronometer error is 01m 25s slow. Your height of eye on the bridge is 58.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 035.3°T N b. 144.7°T N c. 186.5°T N d. 248.5°T 2297: The Platte River empties into which river?
N a. Mississippi N b. Ohio Y c. Missouri N d. Tennessee 2776: The charts show a circle with two black quadrants located at mile 846.0 AHP. What does this indicate?
N a. Hazardous chemical dock Y b. River Gage N c. Betz-Tipton Veneers Terminal N d. Bulletin Board 2881: Your vessel is steering 049°T at 15 knots. At 1914 a light bears 078°T, and at 1951 the same light bears 116°T. What will be your distance off abeam?
Y a. 6.7 miles N b. 7.1 miles N c. 7.5 miles N d. 8.3 miles 3276: While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?
Y a. 175 bbls/day N b. 215 bbls/day N c. 277 bbls/day N d. 300 bbls/day 3463: You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the course made good?
N a. 209°T N b. 217°T Y c. 222°T N d. 232°T 3636: You desire to make good a true course of 279°. The variation is 8°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°E. A north-northwesterly wind produces 3° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?
N a. 281°psc N b. 284°psc Y c. 287°psc N d. 290°psc 10206: Your 2230 position is LAT 41°07.4'N, LONG 72°44.0'W. Assuming that there are no set and drift, what course must you steer per standard magnetic compass (psc) to leave Twenty-Eight Foot Shoal Lighted Buoy (LAT 41°09.3'N, LONG 72°30.4'W) 1 mile abeam to port?
N a. 084°psc N b. 091°psc N c. 094°psc Y d. 098°psc 11014: What will be the velocity of the tidal current outside the breakwater at New Haven Hbr. entrance on 26 May 1983 at 1045 DST (ZD +4)?
N a. 0.0 knot N b. 0.3 knot Y c. 0.5 knot N d. 1.3 knots 11401: At 1520 your GPS position is LAT 41°13.1'N, LONG 72°16.1'W. At 1630 your position is LAT 41°17.5'N, LONG 72°04.7'W. What were your true course and speed made good?
N a. 344° at 8.2 knots N b. 077° at 9.5 knots Y c. 063° at 8.3 knots N d. 059° at 8.1 knots 11509: 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 1232 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the course made good?
N a. 036°T Y b. 040°T N c. 044°T N d. 047°T 11809: What course should you steer by your standard magnetic compass (psc) from a position 2 miles due south of Branford Reef Light to Horton Pt. Light, if the set and drift of the current are 065°T at 2 knots, and a northerly wind will cause 2° of leeway? Your engines are turning for 14 knots.
N a. 113°psc N b. 118°psc Y c. 128°psc N d. 134°psc 12209: You sight South West Ledge Light in line with New Haven Outer Channel Range Rear Light bearing 338.5° per standard magnetic compass. What is the deviation?
Y a. 3°E N b. 4°W N c. 6°E N d. 9°W 15010: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
N a. 150°T at 0.6 knot Y b. 150°T at 1.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 15062: If there is no current, what is the course per standard magnetic compass from your 0802 fix to a position 1.1 miles north of Falkner Island Light?
N a. 064°psc N b. 068°psc N c. 091°psc Y d. 095°psc 15112: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone Y b. depart a regulated area N c. cross a submerged pipeline N d. depart a restricted area 15316: What speed have you made good from 1710 to 1810?
N a. 4.2 knots N b. 4.9 knots N c. 5.5 knots Y d. 6.3 knots 15644: At 2045 You take the following set of bearings:
Watch Hill Point Light bears 005° true
Montauk Point Light bears 350° true
Determine your 2103 fix.
Y a. LAT 41°09.2'N, LONG 71°52.5'W N b. LAT 41°09.1'N, LONG 71°52.2'W N c. LAT 41°09.0'N, LONG 71°52.9'W N d. LAT 41°08.8'N, LONG 71°52.5'W 15757: If you change course at 0610, what is the course to steer per gyro compass to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 072°pgc Y b. 076°pgc N c. 080°pgc N d. 084°pgc 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 16270: The wind is northerly and will cause 2° leeway. The current is 018° at 0.5 knot. If your engines are turning for 8.0 knots. What should you steer to remain in York River Entrance Channel?
N a. 304°T N b. 306°T Y c. 309°T N d. 314°T 16341: At 2230 you take the following visual bearings:
Montauk Point Light, Long Island 317°pgc
Southeast Point Light, Block Island 009°pgc
What is your position?
N a. LAT 40°51.2'N, LONG 71°35.9'W N b. LAT 40°51.5'N, LONG 71°36.4'W N c. LAT 40°52.2'N, LONG 71°36.6'W Y d. LAT 40°52.0'N, LONG 71°37.4'W 16363: At 0405, you increase speed and at 0500 your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of water?
N a. 46 feet (13.9 meters) Y b. 54 feet (16.4 meters) N c. 62 feet (18.8 meters) N d. 66 feet (20.0 meters) 16416: At 1345, you depart from a position 1 mile due east of Montauk Point Light and set course for Block Island Southeast Light at 9 knots. At 1430 your position is Latitude 41° 06.3' North Longitude 071° 41.9' West
What was the current encountered since 1345?
N a. Set 015°, drift 0.5 knot Y b. Set 195°, drift 0.5 knot N c. Set 015°, drift 0.7 knot N d. Set 195°, drift 0.7 knot 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 16566: If you were to head into New London Harbor, which chart should you switch to for the best detail?
N a. 13209 N b. 13212 Y c. 13213 N d. 13214