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.
37: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads -3.6 feet. If the highest point on your vessel is 62 ft. above the water, what is your vertical clearance?
N a. 122.0 feet Y b. 67.6 feet N c. 63.6 feet N d. 60.0 feet 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 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 247: What type of bottom is found at Long Sand Shoal?
N a. Rocky N b. Muddy Y c. Hard N d. Sandy 273: If you correct for the current in the previous question (215°T at 0.5 knot) and maintain an engine speed of 7.5 knots, what is your ETA 0.5 mile south of buoy "W"?
N a. 1014 N b. 1018 N c. 1021 Y d. 1026 286: Your 1900 position is LAT 37°12.9'N, LONG 76°13.5'W. You change course to 317°pgc and slow to 8.0 knots. What is the course per standard magnetic compass?
Y a. 329°psc N b. 319°psc N c. 311°psc N d. 309°psc 288: According to your track line, how far off New Point Comfort Spit Light "4" will you be when abeam of this light?
N a. 0.5 mile Y b. 0.9 miles N c. 1.5 miles N d. 1.8 miles 393: A vessel at LAT 32°14.7'N, LONG 66°28.9'W, heads for a destination at LAT 36°58.7'N, LONG 75°42.2'W. Determine the distance by Mercator sailing.
N a. 241.2° miles N b. 270.2° miles N c. 300.2° miles Y d. 538.2° miles 395: A vessel at LAT 45°36.0'N, LONG 11°36.0'W, heads for a destination at LAT 24°16.0'N, LONG 73°52.0'W. Determine the true course and distance by Mercator sailing.
Y a. 247°T, 3299.3 miles N b. 247°T, 3951.6 miles N c. 251°T, 3298.5 miles N d. 251°T, 3951.6 miles 409: A vessel steams 1082 miles on course 047°T from LAT 37°18.0'N, LONG 24°40.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 49°30.0'N, LONG 06°22.0'W N b. LAT 49°33.0'N, LONG 06°25.0'W Y c. LAT 49°36.0'N, LONG 06°28.0'W N d. LAT 49°39.0'N, LONG 06°31.0'W 481: 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. Determine the latitude of the vertex.
N a. 37°32.2'N Y b. 37°34.9'N N c. 37°41.6'N N d. 37°45.2'N 552: If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?
N a. 0500 N b. 0508 N c. 0514 Y d. You will not sight the light. 640: Which of the following statements concerning the buoys on the Mississippi River is TRUE?
N a. The position of river buoys can be determined by consulting the latest Light List - Vol. V. N b. A preferred channel mark is a lateral mark indicating a channel junction which must always be passed to starboard. Y c. Setting a buoy is the act of placing a buoy on assigned position in the water. N d. None of the above. 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 666: You are on a voyage via position LAT 44°00'N, LONG 150°00'E to LAT 46°15'N, LONG 124°00'W. Using gnomonic chart WOXZC 5270, determine which statement is TRUE?
Y a. A composite sailing with a limiting latitude of 51°N will clear the Aleutian Islands. N b. The northern hemisphere vertex is east of the arrival position. N c. The Aleutian Islands are not a navigational hazard on the direct great circle track. N d. The final course angle lies in the northeast quadrant. 845: On 16 September , your 0600 ZT fix gives you a position of LAT 29°47.2'N, LONG 65°28.4'W. Your vessel is on course 242°T and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1227 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 63°25.3'. What is the calculated latitude at LAN?
N a. 29°07.9'N N b. 29°06.1'N Y c. 29°04.7'N N d. 29°01.6'N 1466: On 21 April , your 1542 zone time DR position is LAT 28°54.0'S, LONG 19°07.0'W. At that time, you observe the Sun bearing 299°psc. The chronometer reads 04h 44m 11s, and the chronometer error is 01m 54s fast. The variation is 3°E. What is the deviation of the standard compass?
Y a. 0.3°W N b. 0.4°E N c. 2.7°W N d. 2.7°E 1700: As you approach French Point Light (mile 915.4 AHP), you see 2 daymarks on the structure. What significance do the daymarks have?
N a. They indicate the starboard side of the channel from seaward and mid-channel fairway. Y b. They indicate the starboard side of the channel from seaward and a channel crossing. N c. They indicate the port side of the channel from seaward and a range marking. N d. They indicate the port side of the channel and a channel crossing. 1903: On 22 April , your 1852 DR position is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing 259°T at an observed altitude (Ho) of 41°15.2'. The chronometer reads 02h 54m 53s, and is 02m 51s fast. What star did you observe?
N a. Diphda Y b. Betelgeuse N c. Gienah N d. Arcturus 2113: From your 0130 position, you change course to adjust for set and drift, and you later obtain the following bearings:
Mattituck Inlet Light bearing 104.5°true
Falkner Island Light bearing 001°true
What is the latitude and longitude of your fix?
N a. LAT 41°00.8'N, LONG 72°40.8'W N b. LAT 41°01.2'N, LONG 72°40.4'W N c. LAT 41°01.6'N, LONG 72°40.0'W Y d. LAT 41°02.0'N, LONG 72°39.5'W 2203: 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. 2210, 22 June N b. 1741, 22 June Y c. 1423, 22 June N d. 1031, 22 June 2216: 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?
N a. 0516, 28 Dec Y b. 1621, 28 Dec N c. 0516, 29 Dec N d. 1621, 29 Dec 2404: At 0812, you are on course 132°T. The standard magnetic compass reads 135°. What should you conclude?
N a. The deviation table is correct for that heading. Y b. Your compass may be influenced by a local magnetic disturbance. N c. You should adjust the magnetic compass. N d. The deviation is increasing as you go south. 2711: Which light characteristics does Foster Light have?
N a. 1 green flash every 4 seconds N b. 1 red flash every 4 seconds Y c. 2 white flashes every 5 seconds N d. 2 red flashes every 5 seconds 2901: You are steaming on a course of 198°T at 18.5 knots. At 0316 you observe a lighthouse bearing 235°T. At 0348 the lighthouse bears 259°T. What is your distance off at the second bearing?
Y a. 14.8 miles N b. 15.3 miles N c. 15.8 miles N d. 16.3 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 3293: Your vessel consumes 274 barrels of fuel per day at a speed of 17.5 knots. What will be the fuel consumption of your vessel at 13.5 knots?
Y a. 126 bbls N b. 163 bbls N c. 211 bbls N d. 253 bbls 3614: The true course between two points is 057°. Your gyrocompass has an error of 3° east and you make an allowance of 1° leeway for a north-northwest wind. Which gyro course should be steered to make the true course good?
Y a. 053°pgc N b. 056°pgc N c. 059°pgc N d. 060°pgc 3755: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 186°T, and the variation is 11°W. If the heading of your vessel at the time of the sighting is 193° per standard magnetic compass, what is the correct deviation?
Y a. 4°E N b. 4°W N c. 7°E N d. 7°W 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. 11402: At 1018 your position is LAT 41°14.4'N, LONG 72°07.2'W. At 1036 your vessels position is LAT 41°13.1'N, LONG 72°16.1'W. What was your true course and speed made good?
Y a. 259° at 22.6 knots N b. 245° at 23.1 knots N c. 079° at 22.8 knots N d. 065° at 25.5 knots 11908: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 117°T N b. 112°T N c. 104°T N d. 102°T 12609: You are on course 239° per standard magnetic compass when you take the following bearings: Falkner Island Light 314°psc Duck Island West Breakwater Light 2DI 039°psc Horton Point Light 157°psc What is your position?
Y a. LAT 41°09.9'N, LONG 72°32.0'W N b. LAT 41°09.3'N, LONG 72°33.0'W N c. LAT 41°10.5'N, LONG 72°32.1'W N d. LAT 41°11.6'N, LONG 72°33.6'W 14203: What is the vertical clearance of the fixed bridge across the entrance to Rock Creek at Stevenson, Washington?
Y a. 18 feet N b. 36 feet N c. 54 feet N d. 70 feet 14502: You are proceeding in an easterly direction on the Columbia River. The pool level of the Bonneville reservoir stands at 84 feet above MSL. If the highest point on your vessel is 49 feet above the water, what will be the vertical clearance as you pass under the center of the Bridge of the Gods?
Y a. 74.0 feet N b. 86.0 feet N c. 97.5 feet N d. 123 feet 15012: At 2020, you obtain a fix using the following information:
9960-X-27112
9960-Y-41432
Cape Charles Lighted Bell Buoy "14" bears 333°pgc. Your longitude is __________.
N a. 75°38.9'W N b. 75°39.1'W N c. 75°39.3'W Y d. 75°40.5'W 15429: What is the vertical clearance of the Vicksburg Highway 80 Bridge when the river level is the same as the Low Water Reference Plane? The low water reference plane (LWRP) for Vicksburg, MS. is 0.1.
N a. 128.3 ft N b. 125.6 ft N c. 119.5 ft Y d. 116.1 ft 15939: From your 1910 position, you set a course of 162°T at a speed of 14 knots. What will serve as a definite warning that you are being set towards Race Rock Light?
N a. Decreasing bearings to Race Rock Light Y b. Decreasing loran readings on loran rate 9960-W N c. Increasing soundings N d. Decreasing radar ranges to Race Point 15959: What is the average velocity of the maximum ebb current in the channel west of Middle Ground?
N a. 0.8 knot N b. 1.0 knot Y c. 1.3 knots N d. 1.6 knots 16045: The north shore of Long Island, from Horton Point to Orient Point,
is __________.
Y a. bluff and rocky N b. low and sparsely wooded N c. marked by long sandy beaches at low water N d. marshy and backed with sand dunes 16057: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
N a. 8 knots N b. 10 knots Y c. 12 knots N d. 14 knots 16066: Which statement concerning Thimble Shoal Channel is TRUE?
Y a. The project width of the main channel is 1000 feet (30.3 meters) N b. The channel is 14.5 miles in length. N c. A tow drawing 30 feet (9.1 meters) is excluded from the main channel. N d. Thimble Shoal Channel is in international waters. 16218: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
N a. 5.4 knots N b. 5.8 knots N c. 6.7 knots Y d. 7.1 knots 16507: What is your speed from your 0630 position, with Buoy "PI"
close abeam, to your 0654 position?
N a. 8.2 knots N b. 9.3 knots Y c. 10.5 knots N d. 11.4 knots 16620: You sight Bartlett Reef Light in line with New London Harbor Light bearing 043°pgc. You are heading 088°pgc and 098.5° per standard magnetic compass at the time of the observation. Which statement is TRUE?
N a. The true heading at the observation was 090°. Y b. The deviation is 1.5°E by observation. N c. The magnetic compass error is 9.5°W. N d. The gyro error is 2°E.