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.
91: At 0305 on 18 April, you pass under the Greenville Bridge (mile 531.3 AHP). What was your average speed since departing Amoco Pipeline Co. Docks (mile 253.6 AHP)?
N a. 7.2 mph Y b. 6.8 mph N c. 6.5 mph N d. 6.2 mph 125: 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 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 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 271: At 0844, the range to the north end of Falkner Island is 2.0 miles and the left tangent bearing is 102°T. What is the approximate charted depth of the water?
Y a. 29 ft (8.8 meters) N b. 22 ft (6.7 meters) N c. 19 ft (5.8 meters) N d. 14 ft (4.2 meters) 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 341: You are on course 082°T, and the engines are turning for 8 knots. At 0352, you take the following bearings:
Stratford Point Light 016°pgc Stratford Shoal (Middle Ground) Light 137°pgc
What is your 0352 position?
Y a. LAT 41°05.2'N, LONG 73°07.8'W N b. LAT 41°05.4'N, LONG 73°07.3'W N c. LAT 41°05.3'N, LONG 73°07.5'W N d. LAT 41°05.4'N, LONG 73°07.7'W 387: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
Y a. 087°pgc N b. 085°pgc N c. 081°pgc N d. 079°pgc 484: You are on a great circle track departing from position LAT 25°50'N, LONG 77°00'W. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. The distance along the great circle track from the vertex to a point (X) is 600 miles westward. Determine the position of point (X) on the great circle track.
N a. LAT 36°47.5'N, LONG 38°21.8'W N b. LAT 36°50.4'N, LONG 38°25.6'W Y c. LAT 36°55.6'N, LONG 38°30.0'W N d. LAT 37°02.3'N, LONG 38°34.4'W 574: If you are making 10 knots, what is your ETA at York Spit Channel Buoys "19" and "20"?
N a. 0959 N b. 1002 N c. 1004 Y d. 1006 575: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"?
N a. 341° Y b. 339° N c. 322° N d. 319° 613: On 21 November, at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival?
N a. 1330, 3 December N b. 1530, 3 December Y c. 1830, 3 December N d. 1530, 4 December 634: You have orders to drop off the empties at the fleeting area at Cairo Point and add five loaded tank barges to your tow. If you are turning for 9 mph and estimate the current at 1.5 mph, what is your ETA at Cairo?
N a. 1031, 22 June Y b. 1423, 22 June N c. 1741, 22 June N d. 2210, 22 June 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 731: On 2 January , your 1759 zone time DR position is LONG 45°17.6'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 08h 57m 10s, and the chronometer error is 02m 16s slow. The index error is 3.5' on the arc, and the height of eye is 42.5 feet. What is your latitude by Polaris?
N a. 22°50.2'N Y b. 23°18.8'N N c. 23°30.8'N N d. 23°48.8'N 1179: On 26 September , your 0830 zone time DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is on course 119°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1124 N b. 1127 N c. 1130 N d. 1133 1243: What is the width of the widest span of the Cairo Highway Bridge (Upper Mississippi River mile 1.3)?
N a. 800 feet Y b. 675 feet N c. 625 feet N d. 503 feet 1279: At 0327 ZT, on 29 May , your DR position is LAT 25°00'N, LONG 64°15'W. You are steering 270°T at a speed of 13.6 knots. What is the zone time of sunrise?
N a. 0521 Y b. 0529 N c. 0536 N d. 0548 1366: On which river is New Providence, TN located?
N a. Allegheny N b. Upper Mississippi N c. Ohio Y d. Cumberland 1418: How far is it to the Hernando Desoto Bridge in Memphis, TN?
N a. 980.8 miles N b. 736.6 miles N c. 312.3 miles Y d. 218.1 miles 1495: On 9 September , your 2043 ZT position is LAT 24°18'N, LONG 66°46'W. You observe Polaris bearing 001°pgc. At the time of the observation the helmsman noted that he was heading 031°pgc and 040°psc. The variation is 11°W. What is the deviation for that heading?
N a. 0° N b. 1°W N c. 3°W Y d. 2°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 1902: On 22 April , your 1852 DR position is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing 077°T at an observed altitude (Ho) of 18°58.7'. The chronometer reads 02h 54m 53s, and is 02m 51s fast. What star did you observe?
N a. Diphda N b. Betelgeuse N c. Gienah Y d. Arcturus 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 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 2014: On 16 October , evening twilight will occur at 1746 ZT, and your DR position will be LAT 28°43.2'N, LONG 60°29.8' W. Considering their magnitude and location, which of the following are the three best stars to select for a fix at star time?
Y a. Antares, Arcturus, Polaris N b. Deneb, Polaris, Vega N c. Antares, Deneb, Vega N d. Vega, Polaris, Enif 2053: At 2342, on 25 August, you pass under the Helena Highway Bridge (mile 661.7 AHP). What has been the average speed of the current since departing Memphis Harbor, McKellar Lake, if you have been making turns for 9 mph?
Y a. 1.8 mph N b. 2.1 mph N c. 4.4 mph N d. 5.6 mph 2124: If the visibility is 10 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?
Y a. 15 miles N b. 12 miles N c. 10 miles N d. 08 miles 2178: On 26 July , your 1901 ZT position is LAT 28°28'N, LONG 157°16'E when you take an observation of Jupiter. The chronometer at the time of the sight reads 08h 54m 34s and is 06m 24s slow. The sextant altitude (hs) is 33°51.5'. The index error is 2.8'off the arc, and the height of eye is 48 feet. What are the azimuth (Zn) and intercept (a) for this sight using the assumed position?
N a. Zn 110.8°, a 32.0' T N b. Zn 249.2°, a 32.0' A Y c. Zn 248.2°, a 34.2' T N d. Zn 290.8°, a 44.2' A 2293: As you pass under the Baton Rouge R.R. and Hwy 190 Bridge C233.9 AHP), you find that the Kinder Morgan Bulk Terminals are indicated by which numbered box?
Y a. 10 N b. 9 N c. 8 N d. 7 2671: While on a course of 349°T, a light bears 13° on the starboard bow at a distance of 10.8 miles. What course should you steer to pass 2.5 miles abeam of the light leaving it to starboard?
N a. 346°T Y b. 349°T N c. 352°T N d. 355°T 2783: Which daymark would you see as you approach Red Store Light (mile 269.5 AHP)?
Y a. Green square N b. Green triangle N c. Green diamond N d. Red square 2909: You are running coastwise at 14 knots. You sight a lighthouse abeam at 0912. At 0939 the lighthouse is 4 points abaft the beam. What is your distance off at the second bearing?
N a. 5.5 miles N b. 6.3 miles N c. 7.8 miles Y d. 8.9 miles 3069: If the speed necessary for reaching port at a designated time is 18.5 knots and the pitch of the propeller is 21.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip?
Y a. 83 N b. 90 N c. 97 N d. 114 3098: If the pitch of the propeller is 21.2 feet, and the revolutions per day are 93,660, calculate the day's run allowing 5% positive slip.
N a. 163.3 miles N b. 217.8 miles Y c. 310.3 miles N d. 342.9 miles 3618: Your vessel is steering course 027° per standard magnetic compass (psc), variation for the area is 19°W, and deviation is 2°E. The wind is from the north-northwest, producing a 5° leeway. What true course are you making good?
N a. 005°T Y b. 015°T N c. 044°T N d. 049°T 3650: The true course between two points is 194°. Your gyrocompass has an error of 2°W and you make an allowance of 1° leeway for a southwest wind. What gyro course should you steer to make the true course good?
N a. 193°pgc N b. 195°pgc Y c. 197°pgc N d. 199°pgc 4005: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic compass heading of 022°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 354° 122.5° - 114° 239.5° - 234°
030.5° - 024° 152.0° - 144° 269.0° - 264°
061.5° - 054° 181.0° - 174° 298.0° - 294°
092.0° - 084° 210.0° - 204° 327.5° - 324°
N a. 1.5°E N b. 0.5°E Y c. 0.0° N d. 0.5°W 11900: What is the true course to steer between the entrance to Great Salt Pond (LAT 41°12.0'N, LONG 71°35.6'W) and the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W), if you are turning for 8.5 knots, and you allow for a current of 247°T at 1.2 knots, and an easterly wind is causing 2° of leeway?
N a. 314°T N b. 320°T N c. 328°T Y d. 333°T 12100: You sight Wolf Trap Light in line with New Point Comfort Spit Light "2" bearing 040° per standard magnetic compass. You are on course 319° per standard magnetic compass. Based on this, you __________.
Y a. know the compass error is 8°W N b. should apply 3°Easterly deviation to the bearing N c. know the deviation table is incorrect N d. should suspect the compass may be affected by a local magnetic disturbance 12108: You sight Tue Marshes Light (LAT 37°14.1'N, LONG 76°23.2'W) in line with Goodwin Thorofare Light "16" (LAT 37°13.7'N, LONG 76°25.0'W) bearing 262° per standard magnetic compass. What is TRUE if your vessel's heading is 119°psc?
N a. The compass error is 10°W. N b. The deviation table must be corrected for the change in date. N c. The deviation is 1°W. Y d. The deviation table is correct for a heading of 119°psc. 12509: You are on course 027° per magnetic compass when you take the following bearings per magnetic compass: New Point Comfort Light "2" 253°
Horn Harbor Entrance Light HH 282°
Wolf Trap Light 348°
What is the position of the fix?
N a. LAT 37°19.4'N, LONG 76°09.5'W N b. LAT 37°19.4'N, LONG 76°09.8'W N c. LAT 37°19.7'N, LONG 76°10.3'W Y d. LAT 37°19.7'N, LONG 76°09.9'W 13210: At 0943, your position is LAT 41°14.8'N, LONG 71°54.3'W. You are turning for 12.2 knots. What is your ETA at the entrance to Great Salt Pond on Block Island?
Y a. 1054 N b. 1048 N c. 1040 N d. 1032 13409: You plan to anchor your vessel at LAT 41°00.5'N, LONG 73°02.8'W. What type of bottom should you expect at this position?
N a. Gray sand Y b. Soft mud N c. Hard sand N d. Gray mud 14001: At 1745 Lady Island Range is in line dead ahead and Government Island Upper Range is in line on your starboard bow. Your vessel is steaming in a westerly direction. At 1851 you pass under the Interstate 5 highway bridge. What speed have you averaged?
N a. 10 mph Y b. 11 mph N c. 12 mph N d. 13 mph 14704: At 0800 your vessel is at mile 110 on the Columbia River. Thirty minutes later your vessel is at mile 115. What is your speed in knots?
N a. 4.3 knots N b. 5.7 knots N c. 7.8 knots Y d. 8.7 knots 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 15168: Which chart provides more detail of Cape Charles harbor and its approaches?
N a. 12238 N b. 12225 Y c. 12224 N d. 12222 15338: At 1705 Race Rock Light bears 099°True; Orient Point Light bears 176°True; Bartlett Reef Light bears 083°True. What is your vessel's position?
N a. LAT 41°15.0'N, LONG 72°14.3'W N b. LAT 41°15.4'N, LONG 72°16.6'W Y c. LAT 41°15.9'N, LONG 72°14.0'W N d. LAT 41°16.4'N, LONG 72°14.2'W 15369: Horton Point Light __________.
Y a. is shown from a white square tower N b. has a fixed green light N c. is 14 feet above sea level N d. is synchronized with a radio beacon 15441: At buoy "CB" you change course to follow the inbound
traffic lane. What is the course to steer per gyro compass if you correct your heading for a current of 315° at 1.0 knot and allow 3° leeway for northeasterly winds?
N a. 297°pgc N b. 299°pgc Y c. 302°pgc N d. 305°pgc 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 15509: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears approximately 040°T from your position at a range of half a mile be painted?
Y a. Horizontally banded, green over red, with a green buoyancy chamber N b. Horizontally banded, red over green, with a red buoyancy chamber N c. Vertically striped, red and green N d. Solid green with red letters "BIS" 16006: You are on course 082°T, and the engines are turning for 8 knots. At 0352, you take the following bearings:
Stratford Point Light 016°pgc
Stratford Shoal (Middle Ground) Light 137°pgc
What is your 0352 position?
N a. LAT 41°05.0'N, LONG 73°08.0'W Y b. LAT 41°05.2'N, LONG 73°07.8'W N c. LAT 41°05.3'N, LONG 73°07.5'W N d. LAT 41°05.4'N, LONG 73°07.7'W 16370: The wind is westerly and will cause 2° of leeway. The current is 180° 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. 307°T Y c. 311°T N d. 314°T 16610: At 2142, you change course to make good 030°T and increase speed to 14 knots. You rendezvous with another vessel and receive fresh supplies while off New Haven Harbor lighted whistle buoy "NH". What is the light characteristic of this buoy?
N a. _ . N b. _ _ Y c. . _ N d. . . 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