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.
75: What is your ETA at the Memphis Highway Bridge?
N a. 1813, 22 Sept N b. 1405, 22 Sept Y c. 1052, 22 Sept N d. 0828, 22 Sept 140: If the highest point on your towboat is 52 feet and the West Memphis Gage reads 26 feet what is the vertical clearance when you pass under the Hernando Desoto Bridge (mile 736.6 AHP)?
N a. 25.8 feet Y b. 30.7 feet N c. 42.6 feet N d. 56.7 feet 142: As you approach West Memphis Lt. (mile 727.4 AHP) you notice on the map a dashed line crossing the river. This line indicates a __________.
N a. submerged oil pipeline N b. submerged gas pipeline N c. aerial tramway Y d. aerial power line 336: What speed have you made good from 1710 to 1810?
Y a. 6.3 knots N b. 5.5 knots N c. 4.9 knots N d. 4.2 knots 373: What is your ETA at point "A"?
N a. 0702 N b. 0655 Y c. 0651 N d. 0640 381: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City?
Y a. 129°pgc N b. 123°pgc N c. 117°pgc N d. 109°pgc 424: From your 0530 position, you set a course of 271°psc with an engine speed of 9 knots. At 0645, Cornfield Safe-Water Buoy is abeam to starboard. What speed have you averaged since 0530?
N a. 9.5 knots N b. 9.0 knots Y c. 8.6 knots N d. 7.5 knots 465: Determine the great circle distance and initial course from LAT 34°51.0'N, LONG 115°01.2'E to LAT 10°16.0'S, LONG 51°42.6'E.
N a. 4436 miles, 245.3°T N b. 4598 miles, 245.6°T Y c. 4493 miles, 245.6°T N d. 4582 miles, 245.6°T 483: The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. The position of the vertex is LAT 37°34.9'N, LONG 25°59.0'W. The difference of longitude from the vertex to a point (X) on the great circle track is 10°W. Determine the latitude which intersects the great circle at point (X).
N a. 37°02.5'N Y b. 37°09.5'N N c. 37°15.6'N N d. 37°21.2'N 485: Determine the great circle distance and initial course from LAT 08°53.0'N, LONG 79°31.0'W to LAT 33°51.5'S, LONG 151°13.0'E.
N a. 7809 miles, 247.0°T N b. 7763 miles, 247.0°T Y c. 7635 miles, 233.9°T N d. 7618 miles, 230.3°T 532: You depart LAT 26°03'S, LONG 10°28'E, for LAT 26°03'S, LONG 01°16'W. What are the course and distance by parallel sailing?
N a. 090°T, 547.2 miles N b. 090°T, 632.5 miles N c. 270°T, 547.2 miles Y d. 270°T, 632.5 miles 605: At 0915 ZT, on 26 July , you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?
Y a. 0728, 7 August N b. 1528, 7 August N c. 0028, 8 August N d. 1528, 8 August 813: On 7 November , your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 162°19.0'W. Your vessel is on course 289°T and your speed is 19.0 knots. Local apparent noon (LAN) occurs at 1138 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'. What is the latitude at 1200 ZT?
N a. 27°55.1'N N b. 27°57.2'N Y c. 27°59.5'N N d. 28°01.9'N 1129: Which daymark should you see as you approach French Point Light (mile 915.4 AHP)?
N a. Red diamond N b. Green square Y c. Red triangle N d. Green diamond 1176: On 24 January , your 0700 zone time DR position is LAT 22°25.0'N, LONG 46°10.0'W. Your vessel is on course 110°T at a speed of 12.0 knots. What is the zone time of local apparent noon (LAN)?
N a. 1203 N b. 1208 Y c. 1212 N d. 1215 1293: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
Y a. Utility crossings N b. Ferry crossings N c. Aerial cable crossings N d. Bridge construction 1906: On 22 March , your 0519 DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 051°T at an observed altitude (Ho) of 50°03.7'. The chronometer reads 10h 16m 47s, and is 02m 15s slow. What star did you observe?
N a. Acamar N b. Enif N c. Menkar Y d. Deneb 1918: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 295°T at an observed altitude (Ho) of 13°50.7'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. What star did you observe?
N a. Elnath N b. Fomalhaut N c. Pollux Y d. Markab 1925: On 23 September , your 1836 DR position is LAT 25°18'S, LONG 162°36'E. You observe an unidentified star bearing 148°T at an observed altitude (Ho) of 13°32'. The chronometer reads 07h 34m 12s, and is 01m 54s slow. Which star did you observe?
N a. Antares N b. Canopus Y c. Achernar N d. Sirius 2027: At 0645, on the 17th of April, you pass Hole in the Wall Lt. (mile 373.4 AHP). What has been your average speed since departing the Exxon Refinery?
N a. 5.8 mph Y b. 6.3 mph N c. 6.7 mph N d. 7.1 mph 2170: On 22 July , at 0720 ZT, in DR position LAT 20°38.2'N, LONG 87°16.0'W, you observe the Moon's lower limb. The sextant altitude (hs) is 38°32.6, and the chronometer reads 01h 18m 14s. The chronometer is 01m 28s slow. The index error is 3.1' off the arc, and the height of eye is 68 feet. What is the azimuth (Zn) and intercept (a) of this sight from the assumed position?
N a. Zn 291.4°, a 5.2' A N b. Zn 111.4°, a 8.7' A Y c. Zn 248.6°, a 5.0' T N d. Zn 068.6°, a 6.5' T 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 2296: If your vessel is making turns for 7.5 mph with an estimated average current of 1.5 mph, what is your ETA at the dock in Angelina, LA?
Y a. 1621, 28 Dec N b. 2203, 28 Dec N c. 0516, 29 Dec N d. 1621, 29 Dec 3269: Your vessel arrives in port with sufficient fuel to steam 812 miles at 15 knots. If you are unable to take on bunkers, at what speed must you proceed to reach your next port, 928 miles distant?
N a. 13.6 knots Y b. 14.0 knots N c. 15.3 knots N d. 15.7 knots 3285: While steaming at 19.4 knots, your vessel consumes 392 barrels of fuel oil per day. In order to reduce consumption to 182 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 13.2 knots Y b. 15.0 knots N c. 17.4 knots N d. 18.2 knots 3634: You desire to make good a true course of 038°. The variation is 5°E, magnetic compass deviation is 4°W, and gyrocompass error is 4°W. A southeasterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 033°psc Y b. 041°psc N c. 043°psc N d. 047°psc 3771: Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyro compass. The variation in the area is 4°E. What is the error of your gyro compass?
Y a. 1.5°W N b. 2.5°W N c. 5.5°W N d. 2.5°E 4006: 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 true heading of 236°.
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. 1.0°W Y b. 0.5°E N c. 1.5°E N d. 0.0° 10305: You are 3 miles due east of Montauk Point Light. What is the course per standard magnetic compass to a position one mile due south of Block Island Southeast Point Light?
N a. 070.0° N b. 076.5° Y c. 082.5° N d. 087.5° 11306: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 1950 your position is LAT 36°59.5'N, LONG 75°37.0'W. What is the speed made good?
N a. 5.6 knots N b. 8.2 knots N c. 9.1 knots Y d. 10.9 knots 13804: What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island?
N a. They mark the limits of breakers in that area. N b. These lines warn the mariner of submerged rocks. Y c. They mark the boundary lines of fish trap areas. N d. These lines warn the mariner of submerged pipelines. 15022: You are upbound approaching Springfield Bend Lt. (mile 244.8 AHP) downriver from Profit Island. Which of the following statements is TRUE?
N a. Profit Island Chute is open to navigation and is a shortcut for single-barge tows. N b. Tow length must not exceed 600 feet to use Profit Island Chute. Y c. Profit Island Chute is closed to navigation. N d. Tows must navigate towards right descending bank when passing Profit Island Chute. 15059: From your 0740 position, you change course to pass 1.1 miles north of Falkner Island Light. Which of the following is true?
N a. you should consult the sailing directions for pilotage requirements N b. you will pass 1.5 nm off Branford Reef Light Y c. your course will keep you clear of the 18' shoal N d. None of the above 15108: Your 1752 position places you __________.
Y a. less than 0.5 mile westward of York Spit Channel N b. less than 0.5 mile eastward of York Spit Channel N c. greater than 0.5 mile westward of York Spit Channel N d. greater than 0.5 mile eastward of York Spit Channel 15146: At 0016 your position is 41°10.3'N, 71°53.0'W. You are steering a course of 296° true with no set and drift. At 0049 Race Rock Light is on your starboard beam. What was your speed made good from your 0016 position?
N a. 13.8 knots N b. 14.4 knots N c. 15.0 knots Y d. 15.6 knots 15160: At 1815, your position is LAT 37°01.0'N, LONG 75°42.7'W. If there is no current, what is the course per standard magnetic compass to arrive at a point 0.3 mile due north of North Chesapeake Entrance Lighted Whistle Buoy "NCA"?
N a. 249.0°psc N b. 251.5°psc N c. 255.0°psc Y d. 257.0°psc 15163: Which statement concerning your 1920 position is TRUE?
Y a. You are entering a restricted area. N b. You are governed by the Inland Rules of the Road. N c. You are within the Chesapeake Bay Entrance traffic separation scheme. N d. On your present course Trestle "C" of the Chesapeake Bay Bridge - Tunnel is dead ahead. 15208: At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the course made good between 1730 and 1750?
N a. 072°T N b. 075°T Y c. 078°T N d. 080°T 15240: At 1130, Horton Point Light bears 172° true at a range of 3.45nm
The fathometer reads 81 ft. Your position is __________.
N a. north of your intended track line N b. 41°09.4'N, 72°22.6'W N c. three miles southeast of Six Mile Reef Buoy "8A" Y d. 41°08.5'N, 72°27.3'W 15243: At 1245 the GPS shows your position to be LAT 41°10.3'N, LONG 72°44.2'W. You are steering a course of 284°T at an engine speed of 13.0 knots. At what time would you expect the New Haven Harbor Outer Range to be in line if you have a current setting 112°T at 1.2 knots?
N a. 1318 Y b. 1323 N c. 1328 N d. 1343 15260: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 4°
leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 101°psc N b. 108°psc N c. 110°psc Y d. 115°psc 15342: At 1756 you determined your vessel's position to be 41°10.4'N, 71°59.2'W. From this position, you wish to change course to head for a point 5 miles west of Block Island North Light. With a reported set of 050°T, a drift of 2.0 knots and turning RPM's for 14 knots, which course should you steer to make good your desired course?
N a. 070°T N b. 075°T Y c. 080°T N d. 085°T 15541: You alter course to make good 076°T from your 2200 fix,
and estimate you will make 13.6 knots over the ground. If the visibility is 5.5 miles, what is the earliest time you will sight Falkner Island Light? (nominal range 13 miles)
N a. The light is visible at 2200 N b. 2221 Y c. 2236 N d. You will not sight the light 16059: At 1800, Tue Marshes Light bears 270°pgc, and York Spit Swash Channel Light "3" bears 007°pgc. Your position is __________.
N a. LAT 37°14.0'N, LONG 76°19.8'W N b. LAT 37°14.2'N, LONG 76°20.3'W Y c. LAT 37°14.2'N, LONG 76°20.1'W N d. LAT 37°14.5'N, LONG 76°20.0'W 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 16111: Which publication contains the specific information about navigating in York Spit Channel?
N a. Light List Y b. Coast Pilot N c. Chesapeake Bay Harbor- master's Regulations Manual N d. Navigator's Manual - Chesapeake Bay 16356: What is the course per standard magnetic compass from the anchorage to point "A" located 0.5 mile east of Cape Charles Lighted Bell Buoy 14?
N a. 185° N b. 188° N c. 191° Y d. 194° 16365: From your 0500 position, you change course to 221°T and order turns for 9.8 knots. At 0600 Chesapeake Light bears 143°pgc at a radar range of 6.5 miles. Cape Henry Light bears 252°pgc. What is the position of your 0600 fix?
N a. LAT 36°59.1'N, LONG 75°48.1'W N b. LAT 36°59.1'N, LONG 75°47.6'W Y c. LAT 36°59.2'N, LONG 75°47.8'W N d. LAT 36°58.9'N, LONG 75°48.5'W 16468: When Cape Henry Light is abeam, what is the approximate distance to Yorktown?
N a. 58 miles N b. 55 miles N c. 42 miles Y d. 34 miles 16564: If your height of eye is 45 feet (13.7 meters), what is the approximate geographic range of Block Island North Light?
N a. 7.8 nm N b. 8.9 nm N c. 13.0 nm Y d. 16.7 nm 16567: From your 1915 position, you come left and set a course for Gardiners Point. At 1930, your position is LAT 41°12.7'N,
LONG 71°56.8'W. What type of bottom is charted at this position?
N a. Blue mud, gritty shells N b. Buried mussels, gritty shells Y c. Blue mud, gray sand N d. Bumpy mud with gravel surface 16569: The short-long dashed magenta line around Gardiners Island marks __________.
N a. a regulated anchorage Y b. fish trap areas N c. an area closed to the public N d. underwater cables 16612: At 0112, what is the approximate depth under the keel?
Y a. 38 feet (11.5 meters) N b. 47 feet (14.2 meters) N c. 51 feet (15.5 meters) N d. 57 feet (17.3 meters)