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.
70: What is the vertical clearance of the Natchez-Vidalia Highway Bridge (westbound) when the river level is the same as the Low Water Reference Plane (6.5 feet)?
N a. 125.6 ft Y b. 119.5 ft N c. 108.3 ft N d. 102.2 ft 94: You have orders to drop off the empties at the fleeting area in Cairo and add five loaded barges to your tow. If you are turning for 8 mph and estimate the current at 0.5 mph, what is your ETA at Cairo?
N a. 1928, 11 Aug Y b. 1614, 11 Aug N c. 1327, 11 Aug N d. 2352, 10 Aug 214: From your 1930 position, you plot a course to pass 0.5 mile due south of Race Rock Light. If your vessel's speed is 10.0 knots, the current's set and drift are 040°T at 1.8 knots, and a north wind produces a 3° leeway, what true course should you steer to make good your desired course?
N a. 300°T N b. 295°T N c. 290°T Y d. 280°T 267: At 0802, Branford Reef Light bears 348°T at 0.75 mile, and the north point of Falkner Island bears 088°T at 6.7 miles. What were the set and drift since 0740?
N a. Set 040°T, drift .2 knot N b. Set 220°T, drift .2 knot Y c. Set 220°T, drift .6 knot N d. You are making good your intended course and speed. 299: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2001, you obtain the following information:
Chesapeake Channel Tunnel North Light - 131°pgc; Thimble Shoal Light - 248°pgc
What were the set and drift between 1930 and 2001?
Y a. 127° at 0.5 knot N b. 127° at 1.1 knot N c. 307° at 1.1 knot N d. 307° at 0.5 knot 339: The coastline by Cape Henry is best described as __________.
N a. rocky with pine scrubs N b. low wetlands Y c. sandy hills about eighty feet high N d. low and thinly wooded with many beach houses 401: Your vessel receives a distress call from a vessel reporting her position as LAT 35°01'S, LONG 18°51'W. Your position is LAT 30°18'S, LONG 21°42'W. Determine the true course from your vessel to the vessel in distress by Mercator sailing.
N a. 135°T N b. 149°T Y c. 153°T N d. 160°T 479: The great circle distance from LAT 24°25.3'N, LONG 83°02.6'W to LAT 35°57.2'N, LONG 5°45.7'W is 3966.5 miles. Determine the latitude of the vertex.
N a. 38°46.2'N N b. 38°16.4'N Y c. 38°09.4'N N d. 37°57.3'N 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 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 662: You are planning a voyage by great circle from LAT 38°00'N, LONG 73°00'W to LAT 49°00'N, LONG 06°00'W. Which of the following statements is TRUE? (Use gnomonic tracking chart WOXZC 5274)
N a. You will pass to the south of icebergs reported extending to 100 miles south of Cape Race Newfoundland. Y b. The shoals with a 25-mile radius around Sable Island will be a hazard. N c. You will reach the maximum northerly latitude at longitude 29°45'W. N d. The distance is measured in 60-mile segments using the length of a degree of latitude at the vertex. 670: You are on a voyage from Cape May (LAT 39°50'N, LONG 74°45'W) to the English Channel (LAT 49°00'N, LONG 05°00'W). What will NOT prohibit the use of a great circle track from departure to arrival? (Use gnomonic chart WOXZC5274.)
N a. Newfoundland N b. Icebergs north of 48°N and west of 49°W N c. Islands approximately 50 miles south of Cape Cod Y d. The high latitude in which the vertex lies 750: On 28 October , at 1754 ZT, your vessel's DR position is LAT 28°30'N, LONG 63°24'W. At this time, you obtain a sextant altitude (hs) of Polaris reading 28°42.6', with an index error of 2.4' on the arc. Your chronometer reads 09h 50m 00s, and is 4m 14s slow. What is your latitude by Polaris, given a height of eye of 28 feet (8.5 meters)?
N a. 28°25.2'N N b. 28°30.6'N Y c. 28°34.9'N N d. 28°41.3'N 812: On 28 July , your 0800 zone time (ZT) fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1150 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'. What is the latitude at 1200 ZT?
N a. 26°25.0'N Y b. 26°27.6'N N c. 26°29.8'N N d. 26°32.0'N 988: On 29 June , your 0800 zone time fix gives you a position of LAT 26°16.0'S, LONG 61°04.0'E. Your vessel is steaming a course of 079°T at a speed of 15.5 knots. An observation of the Sun's upper limb is made at 0905 zone time, and the observed altitude (Ho) is 25°20.1. The chronometer reads 05h 08m 12s, and the chronometer error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) for this sight is 40°44.2'. Determine the vessel's 1200 zone time position.
Y a. LAT 26°02.0'S, LONG 62°05.0'E N b. LAT 26°02.0'S, LONG 62°23.2'E N c. LAT 26°05.1'S, LONG 62°06.3'E N d. LAT 25°56.0'S, LONG 62°03.0'E 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 1212: It is 21 November and you are keeping zone time +8. You are on course 082°T, speed 19 knots. Your 0830 DR position is LAT 24°14.8'N, LONG 133°35.5'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 13h 35m 02s N b. 13h 03m 20s N c. 12h 35m 59s Y d. 12h 34m 51s 1288: What is NOT true about the yellow square at mile 227.3 AHP?
N a. Yellow in color N b. Square in shape Y c. Lighted N d. Part of Intracoastal Waterway System 1296: At which of the following times would you be able to listen to lower Mississippi River conditions on VHF Channel 22?
N a. 0900 hours N b. 1100 hours N c. 1200 hours Y d. 1300 hours 1366: On which river is New Providence, TN located?
N a. Allegheny N b. Upper Mississippi N c. Ohio Y d. Cumberland 1420: 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. 1454: On 4 October , your 0734 zone time DR position is LAT 24°11.0'N, LONG 162°34.0'E. At that time, you observe the Sun bearing 105.5°psc. The chronometer reads 08h 36m 11s, and the chronometer error is 01m 46s fast. The variation is 7°W. What is the deviation of the standard compass?
N a. 1.2°W N b. 1.9°E N c. 5.3°W Y d. 5.8°E 1723: You will pass the first gage at __________.
N a. Profit Island N b. Bayou Sara N c. Baton Rouge Y d. Red River Landing 1740: On what river is Ghent, Kentucky located?
N a. Tennessee N b. Mississippi N c. Missouri Y d. Ohio 1835: 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 1868: On 12 June , your 1945 DR position is LAT 21°47.0'N, LONG 46°52.0'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 130°T at a sextant altitude (hs) of 45°21.2'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 10h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Theta Carinae N b. Epsilon Leonis Y c. Beta Librae N d. Zeta Puppis 1893: On 22 July , your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 104°T at an observed altitude (Ho) of 9°55.7'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
N a. Hamal Y b. Rigel N c. Menkar N d. Acamar 1949: The circle with black and white quadrants located at mile 435.6 AHP is a __________.
N a. Daymark N b. Electrical Tower Y c. River Gage N d. Information Board 2155: On 17 May , at 0501 zone time, morning stars were observed, and the vessel's position was determined to be LAT 22°16.0'S, LONG 103°46.0'W. Your vessel is steaming at 24.0 knots on a course of 301°T. A sextant observation of the Sun's lower limb is made at 0845 zone time. The chronometer reads 03h 43m 32s, and the sextant altitude is 28°24.7'. The index error is 1.5' off the arc, and the chronometer error is 02m 02s slow. Your height of eye on the bridge is 85.5 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 051.0°T Y b. 052.5°T N c. 054.2°T N d. 055.7°T 2162: On 5 April , at 0509 zone time, morning stars were observed and the vessel's position was LAT 28°32'N, LONG 177°13.0'W. Your vessel is steaming at 19.0 knots on a course of 258°T. A sextant observation of the Sun's lower limb is made at 1021 zone time. The chronometer reads 10h 20m 09s, and the sextant altitude (hs) is 58°06.6'. The index error is 1.0' off the arc, and the chronometer error is 00m 54s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 125.8°T N b. 128.8°T Y c. 129.2°T N d. 130.2°T 2911: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
N a. Ferry crossings Y b. Utility crossings N c. Aerial cable crossings N d. Bridge construction 3075: If the speed necessary for reaching port at a designated time is 15.7 knots and the pitch of the propeller is 23.4 feet, how many revolutions per minute will the shaft have to turn, assuming a 6% negative slip?
Y a. 64 N b. 68 N c. 72 N d. 76 3101: You are turning 100 RPM, with a propeller pitch of 25 feet, and an estimated slip of -5%. What is the speed of advance?
N a. 24.7 knots N b. 23.5 knots Y c. 25.9 knots N d. 22.3 knots 3298: Your vessel consumes 216 barrels of fuel per day at a speed of 15.0 knots. What will be the fuel consumption of your vessel at 17.5 knots?
N a. 232 bbls N b. 252 bbls N c. 294 bbls Y d. 343 bbls 4010: 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 magnetic compass heading of 104°.
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°
N a. 1.8°E N b. 2.6°E Y c. 2.2°W N d. 2.7°W 10906: What correction should be applied to the charted depths of the Poquoson River at York Point at the PM low water on 18 December 1983?
N a. +1.9 feet N b. -0.1 feet Y c. -0.4 feet N d. No correction is necessary 11301: At 1256 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. At 1331 your position is LAT 37°07.5'N, LONG 75°39.1'W. What was the speed made good between the fixes?
N a. 14.6 knots N b. 15.2 knots N c. 16.6 knots Y d. 18.3 knots 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 13101: At 1523 your position is LAT 41°08.2'N, LONG 71°34.4'W. You are turning for 8.7 knots. What is your ETA at Shagwong Reef Buoy "7SR"?
N a. 1653 N b. 1700 Y c. 1711 N d. 1718 14200: What is the length of the city wharf at The Dalles on the Columbia River?
N a. 20 feet Y b. over 1000 feet N c. 800 feet N d. 600 feet 15046: As you pass through the Chesapeake Bay Bridge and Tunnel,
you take a bearing of 047°pgc along trestle C when it is in line. The helmsman reports the vessel's heading as 316°
pgc and 329°psc. What is the deviation on that heading?
N a. 3°E N b. 1°E Y c. 1°W N d. 9°W 15344: From your 1850 position of 41°12.8'N, 71°44.1'W, you change course to 060°T. If you make the course good,
what will be your predicted distance off Point Judith Light when the Light bears 015°T?
N a. 1.2 miles N b. 1.9 miles Y c. 2.7 miles N d. 3.4 miles 15658: What course should you steer by the standard magnetic compass in order to maintain a heading of 081°pgc?
N a. 062°psc N b. 080°psc N c. 090°psc Y d. 095°psc 15709: At 0830, you obtained the following radar informations:
Branford Reef Light bearing 259° true @ 4.2 nm
What is your vessel's position?
N a. LAT 41°12.4'N, LONG 73°56.0'W N b. LAT 40°17.4'N, LONG 73°54.0'W N c. LAT 41°12.0'N, LONG 72°53.8'W Y d. LAT 41°12.4'N, LONG 72°53.8'W 15738: At 1830 you obtained the following Loran-C readings:
9960-W-14820.0
9960-X-26097.0
9960-Y-43713.5
What is your vessel's position?
N a. LAT 40°41.0'N, LONG 72°06.0'W N b. LAT 40°41.0'N, LONG 72°10.6'W Y c. LAT 40°42.5'N, LONG 72°07.1'W N d. LAT 40°47.5'N, LONG 72°02.9'W 16010: The characteristic of Branford Reef Light is __________.
N a. flashing red every 4 seconds N b. flashing red every 3 seconds Y c. flashing white every 6 seconds N d. flashing yellow every 4 seconds 16041: From your 0847 fix, you change course to arrive at the rendezvous position and, correcting for current, you estimate your speed over the ground at 15 knots. What is your ETA at the rendezvous?
N a. 0902 N b. 0905 Y c. 0908 N d. 0911 16064: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-.3 meter). What is the approximate depth under the keel?
N a. 51 feet (15.5 meters) Y b. 45 feet (13.6 meters) N c. 40 feet (12.1 meters) N d. 35 feet (10.6 meters) 16241: At 2129 Cape Charles Light bears 253°T, Hog Island Lighted Bell Buoy "12" bears 351°T, and Cape Charles Lighted Bell Buoy "14" bears 230°T. Which statement is TRUE?
N a. The fathometer reads about 62 feet (18.9 meters). N b. The bottom is hard sand and oysters. N c. You are to seaward of the contiguous zone. Y d. You are governed by the International Rules of the Road. 16359: If your engines are turning for 6.5 knots and the estimated current is north at 0.5 knot. What is the ETA at point "A"?
Y a. 0511 N b. 0501 N c. 0450 N d. 0440