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.
15: The Vicksburg Gage reads 31.9 feet. The high point on your towboat is 43 feet above the water. What is the vertical clearance as you pass under the Vicksburg Highway 80 Bridge?
N a. 36.2 feet Y b. 41.4 feet N c. 58.0 feet N d. 84.3 feet 64: What is the length of the trip?
N a. 726.0 miles Y b. 851.9 miles N c. 878.9 miles N d. 879.6 miles 198: While navigating inbound Thimble Shoal Channel system you must __________.
N a. navigate in the main channel when between Trestles A & B Y b. use the north auxiliary channel N c. remain 1500 yards (1360 meters) from large naval vessels N d. maintain a speed of six knots 202: Which statement concerning Montauk Point Light is TRUE?
N a. The light comes on at sunset. Y b. There is an emergency light if the main light is extinguished. N c. The height of the light is 24 feet. N d. The tower is painted with black and white stripes. 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. 330: Which chart could you use for greater detail of the area at the south end of York Spit Channel?
N a. 12254 N b. 12226 N c. 12224 Y d. 12222 356: At 0410, you take the following bearings:
New Point Comfort Light "2" 242°T
Wolf Trap Light 313°T
Horn Harbor Entrance Light "HH" 262°T
What is your 0410 position?
N a. LAT 37°20.9'N, LONG 76°07.7'W Y b. LAT 37°21.0'N, LONG 76°08.1'W N c. LAT 37°21.1'N, LONG 76°07.9'W N d. LAT 37°21.2'N, LONG 76°08.2'W 372: If you change course at 0610, what is the course to steer to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 084°pgc Y b. 080°pgc N c. 076°pgc N d. 072°pgc 411: A vessel steams 3312 miles on course 282°T from LAT 34°24'S, LONG 18°18'E. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 22°39'S, LONG 43°17'W N b. LAT 22°42'S, LONG 43°14'W N c. LAT 22°47'S, LONG 43°10'W Y d. LAT 22°55'S, LONG 43°05'W 487: At 0700, your gyro alarm sounds. What course should you steer by the standard magnetic compass in order to maintain your original heading of 078°T?
Y a. 095°psc N b. 090°psc N c. 080°psc N d. 062°psc 593: What is the length of the trip?
N a. 1195.4 miles N b. 1223.1 miles Y c. 1520.1 miles N d. 1657.8 miles 596: At 0921, on 24 July, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 10.0 mph, what was the current since departure?
N a. 1.4 mph Y b. 1.7 mph N c. 2.0 mph N d. 7.0 mph 703: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. List of Buoys and Daymarks N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Map Y d. None of the above 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 1134: 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. 1298: Your company wants to know at what time you will be arriving at the fleeting area at Sycamore Chute Light (mile 740.3 AHP) in Memphis, TN You are making turns for 9.0 mph and you estimate the average current at 2.2 mph. Figuring the distance and time from Hole in the Wall Lt. (mile 373.4 AHP), what is your ETA at Sycamore Chute Lt.?
Y a. 1242, April 19th N b. 1645, April 19th N c. 2242, April 19th N d. 2333, April 19th 1302: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 30 feet 1542: You are turning for 6.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
N a. 6.8 mph Y b. 7.8 mph N c. 8.8 mph N d. 9.4 mph 1548: As you approach Buckridge Light (mile 412.5 AHP),
which type of daymark would you see on the light structure?
N a. Red diamond N b. Red triangle N c. Green diamond Y d. Green square 1757: What town is located at mile 395 AHP?
Y a. St. Joseph N b. Belmont N c. St. James N d. Rodney 1842: What town is located at mile 389.8 AHP?
N a. Whitehall N b. Belmont N c. St. James Y d. Rodney 1842: What town is located at mile 389.8 AHP?
N a. Whitehall N b. Belmont N c. St. James Y d. Rodney 1866: On 12 June , your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 019.0°T at a sextant altitude (hs) of 53°56.2'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Phecda N b. Mimosa N c. Gamma Ursae Minoris Y d. Mizar 1915: On 14 January , your 0550 DR position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star bearing 043°T at an observed altitude (Ho) of 37°12.1'. The chronometer reads 08h 48m 51s, and is 01m 22s slow. What star did you observe?
N a. Gienah N b. Kochab N c. Gacrux Y d. Eltanin 2018: On 11 November , your 0200 zone time DR position is LAT 26°32'S, LONG 154°16'E. You are on course 058°T at a speed of 21 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Polaris, Regulus, Rigel N b. Jupiter, Spica, Canopus N c. Saturn, Peacock, Rigel Y d. Mars, Betelgeuse, Miaplacidus 2019: On 15 October , your 0300 zone time DR position is LAT 27°14'S, LONG 99°46'E. You are on course 128°T at a speed of 19 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Jupiter, Alphard, Betelgeuse N b. Mars, Regulus, Canopus N c. Achernar, Suhail, Alphard Y d. Achernar, Procyon, Aldebaran 2062: You are downbound, passing by Spanish Moss Lt. (mile 534.2 AHP), when you observe on your Mississippi River map several black broken lines extending into the river from the bank. These indicate __________.
N a. fleeting areas N b. revetments N c. dikes Y d. weirs 2320: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
N a. 48.0 feet Y b. 53.2 feet N c. 68.2 feet N d. 116.0 feet 2454: 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 2457: You have steamed 369 miles at 16 knots and burning 326 barrels of fuel per day. You must decrease your consumption to 212 barrels per day with 271 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 11.1 N b. 12.9 N c. 13.6 Y d. 15.1 2457: You have steamed 369 miles at 16 knots and burning 326 barrels of fuel per day. You must decrease your consumption to 212 barrels per day with 271 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 11.1 N b. 12.9 N c. 13.6 Y d. 15.1 2500: You are underway and intend to make good a course of 227°T. You experience a current with a set and drift of 350°T at 2.1 knots, and a northwest wind produces a leeway of 5°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 11 knots. What will be your speed made good over your intended course of 227°T?
N a. 18.5 knots N b. 18.1 knots N c. 17.6 knots Y d. 17.2 knots 3062: The propeller on your vessel has a pitch of 22.8 feet. From 0800, 18 April, to 1020, 19 April, you steamed an observed distance of 403.6 miles. If your average RPM was 74, what was the slip?
N a. +7.0% N b. -7.0% Y c. +8.0% N d. -8.0% 3091: If the pitch of the propeller is 25.1 feet, and the revolutions per day are 91,591, calculate the day's run allowing 7% positive slip.
Y a. 351.6 miles N b. 378.1 miles N c. 390.0 miles N d. 404.6 miles 3312: You have steamed 199 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 410 miles?
N a. 32.6 tons N b. 39.9 tons Y c. 47.4 tons N d. 97.6 tons 3760: 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 352°T, and the variation is 4°W. If the heading of your vessel at the time of the sighting is 359° per standard magnetic compass, what is the correct deviation?
Y a. 3°W N b. 7°E N c. 11°E N d. 11°W 10301: Determine the course per standard magnetic compass from Cerberus Shoal Buoy 9 (LAT 41°10.4'N, LONG 71°57.1'W) to the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W).
N a. 030°psc N b. 036°psc Y c. 059°psc N d. 067°psc 12907: At 0914 you are in Chesapeake Channel between Trestle B and Trestle C of the Chesapeake Bay Bridge and Tunnel. What is your ETA at North Chesapeake Entrance Buoy NCA if you are making good 10.9 knots (Use the buoyed channel and appropriate sea lane)?
Y a. 1038 N b. 1044 N c. 1049 N d. 1055 15024: Which of the following statements regarding buoys on the Mississippi River is TRUE?
N a. The positions of river buoys can be found in the latest edition of Light List-Vol. V. Y b. Buoy positions on the chart are approximate. N c. The buoys are maintained on station year round. N d. The buoys do not shift positions due to permanent moorings. 15029: What type of daymark will you see as you approach Gold Dust Bar Light (mile 793.3 AHP) ?
Y a. Red diamond N b. Red triangle N c. Green square N d. Green diamond 15066: If you correct for the current in the preceding question (035°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. 1016 Y b. 1021 N c. 1026 N d. 1030 15413: From your 1915 fix you come right and steer a course of 200°T. At 2000, your position is LAT 37°05.5'N, LONG 76°07.0'W. Your intention is to pass through Chesapeake Channel. If there are no set and drift, what course would you steer per standard magnetic compass to make good a course of 145°T?
N a. 134° N b. 139° N c. 151° Y d. 156° 15742: At 2100 your position is LAT 40°58.5'N, LONG 71°46.0'W. You are proceeding north. At 2131 Montauk Point Light has a radar range of 5.1 miles and bears 284°T. Block Island Southeast Light has a radar range of 10.8 miles. What was the course made good from your 2100 position?
N a. 005°T Y b. 011°T N c. 017°T N d. 025°T 15756: You are steering 087°pgc and turning for 6.8 knots. At 0600, you take the following bearings:
Little Gull Island Light bearing 085.5°pgc
Bartlett Reef Light bearing 043°pgc
What is your 0600 position?
Y a. LAT 41°12.1'N, LONG 72°13.8'W N b. LAT 41°12.1'N, LONG 72°14.6'W N c. LAT 41°12.3'N, LONG 72°14.7'W N d. LAT 41°12.5'N, LONG 71°14.9'W 15869: After you raise Stratford Shoal Middle Ground Light, how will the bearings change if you pass to the north of the light?
Y a. The bearings will change to the left. N b. The bearings will remain steady. N c. The bearings will change to the right. N d. Magnetic compass bearings will change to the left and gyro compass bearings will change to the right. 16210: As you near Little Gull Island, you use your loran to insure that you do not come within 0.5 mile of the island. Which of the following loran readings will act as a danger line and keep you off Little Gull Island by a minimum of 0.5 mile?
Y a. Not less than 9960-Y-43953.5 N b. Not more than 9960-W-14735.9 N c. Not less than 9960-W-14735.8 N d. Not more than 9960-X-26149.0 16411: You get underway at 1030. The wind is out of the SSE and you estimate 3° leeway. What course should you steer per gyrocompass to make good a desired course of 075°T?
N a. 074°pgc N b. 076°pgc N c. 078°pgc Y d. 080°pgc 16418: At 2100, you set course of 000°T, speed 10 knots from LAT 41°07.0'N, LONG 71°30.0'W. Visibility is 5.5 n.m. What is the earliest time you can expect to sight Point Judith Light? (Use charted range of 20 miles as nominal range.)
N a. The light is visible at 2100. Y b. 2114 N c. 2123 N d. 2131 16442: The area bounded by the buoys "C51" to "C47A" to "M6" to "M14", west of your anchorage, is __________.
N a. a training area for naval small craft N b. restricted to oil and mineral exploration N c. an anchorage for ammunition barges Y d. a fish trap area 16444: At 1042 you take the following round of bearings:
Cape Henry Light 259°T
Chesapeake Light 101°T
Cape Charles Light 006°T
From this position, you set course 070°T at a speed of 9.5 knots.
What is the course per standard magnetic compass?
N a. 069.5°psc N b. 060.5°psc Y c. 079.5°psc N d. 080.5°psc 16518: At 0845, Montauk Pt. Light is bearing 205°T at a radar distance of 6.6 miles. What is your speed made good from your 0815 position?
Y a. 8.2knots N b. 9.2 knots N c. 10.0 knots N d. 10.5 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 16644: Visibility becomes variable in patchy fog and you maintain 5 knots speed. At 0610 you sight Montauk Point Light bearing 239°pgc, and at 0630 you sight Watch Hill Point Light bearing 333°pgc. What is the position of your 0630 running fix?
Y a. LAT 41°08.3'N, LONG 71°45.4'W N b. LAT 41°08.2'N, LONG 71°45.8'W N c. LAT 41°08.1'N, LONG 71°45.1'W N d. LAT 41°08.0'N, LONG 71°45.2'W