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.
67: The Gage at Red River Landing reads 22.2 feet. The LWRP for Red River is 10.6 feet. What is the water level in relation to the low water reference plane?
N a. 32.8 ft below N b. 32.8 ft above N c. 11.6 ft below Y d. 11.6 ft above 157: At 1710 on 27 November, you are abeam of Kings Point Lt. (mile 439.8 AHP). At this time you receive a message that there will no be space for you at the Redneb Services Dock until after 1200 on the 29 November. What speed over the ground will you have to slow to so as not to arrive before this time?
N a. 5.4 mph N b. 6.1 mph N c. 6.9 mph Y d. 7.9 mph 223: At 1920, Cape Henry Light bears 225°pgc, and Chesapeake Channel Tunnel North Light bears 288°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light?
N a. 206° Y b. 213° N c. 215° N d. 220° 292: If you have 17.3 miles to reach your destination from your 2000 position and want to be there at 2230, what speed should you make good?
Y a. 6.9 knots N b. 6.5 knots N c. 6.1 knots N d. 5.7 knots 312: A vessel at LAT 07°05'N, LONG 81°45'W is to proceed to LAT 08°40'N, LONG 88°00'W. What are the course and distance by mid-latitude sailing?
N a. 283.1°T, 381.2 miles Y b. 284.3°T, 384.6 miles N c. 285.6°T, 385.0 miles N d. 286.8°T, 387.4 miles 342: If the visibility is 11 miles, what is the earliest time you can expect to see New Haven Light?
N a. The light is visible at 0352. Y b. 0443 N c. 0414 N d. You will not sight the light. 418: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
Y a. 7.1 knots N b. 6.7 knots N c. 5.8 knots N d. 5.4 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 513: What is the distance from your 0200 position to the point where Twenty-Eight Foot Shoal lighted buoy is abeam to starboard?
N a. 7.3 miles N b. 7.1 miles Y c. 6.9 miles N d. 6.6 miles 550: You observe the star Antares at a sextant altitude (hs) of 38°18.7' on 28 February . The index error is 2.4' on the arc. The height of eye is 40 feet (12.2 meters). What is the observed altitude (Ho)?
N a. 38°07.5' Y b. 38°09.0' N c. 38°10.5' N d. 38°12.5' 595: You are passing the Bayou Sara Gage which reads 3.9 feet. The low water reference plane (LWRP) at Bayou Sara is 5.25 feet. Which of the following statements is TRUE?
N a. The river level is above the Low Water Reference Plane. N b. Red Store Landing Revetment is ahead on your starboard side N c. This gage reading is at a lower elevation than the same reading on the Gage at Head of Passes. Y d. None of the above. 631: From your 0100 position, you change course to 258° per standard magnetic compass. Your engine speed is 10.0 knots. A short time later, your fathometer reads 51 feet (15.5 meters) under the keel. What is the water depth?
N a. 38.5 feet (11.7 meters) N b. 43.5 feet (13.2 meters) N c. 51.0 feet (15.5 meters) Y d. 59.5 feet (18.0 meters) 701: At 1118, on 24 May, you pass Natchez Gage and estimate the current will average 3.0 mph for the remainder of the time on the Mississippi River. What is your ETA at Cairo, IL if you continue to turn for 10 mph?
N a. 0840, 26 May N b. 2218, 26 May N c. 2218, 27 May Y d. 2339, 27 May 736: On 6 March , your 1854 zone time DR position is LAT 23°51.5'N, LONG 73°14.0'W. At that time you observe Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is 11h 52m 40s, and the chronometer error is 01m 56s slow. The index error is 5.0' on the arc, and the height of eye is 43.5 feet (13.3 meters.) What is your latitude by Polaris?
N a. 23°29.5'N Y b. 23°36.3'N N c. 23°49.9'N N d. 24°02.9'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 1089: At 1830 zone time, on 6 April , your DR position is LAT 26°33.0'N, LONG 64°31.0'W. You are steering course 082°T at a speed of 16.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1900 running fix. NP-0019
N a. LAT 26°20.1'N, LONG 64°19.4'W N b. LAT 26°23.7'N, LONG 64°29.3'W N c. LAT 26°28.4'N, LONG 64°32.1'W Y d. LAT 26°32.5'N, LONG 64°27.1'W 1120: At 0850, 4 January, you pass the Gage at Natchez, MS which reads 26.8 feet. The low water reference plane (LWRP) for Natchez is 6.1 feet. What is the water level in relation to the low water reference plane?
Y a. 20.7 ft above N b. 20.7 ft below N c. 32.9 ft above N d. 32.9 ft below 1246: Which of the following statements are TRUE?
N a. Oil well structures are listed in the Light List. N b. All aids to navigation with lights have lateral significance. Y c. On the Western Rivers, crossing marks may exhibit white lights. N d. None of the above. 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 2403: At 0812 you obtain the following information:
Chesapeake Light bearing 091° true @ a range of 10.5 nm
What is your 0812 position?
N a. LAT 36°53.7'N, LONG 75°56.0'W N b. LAT 36°53.8'N, LONG 75°56.1'W Y c. LAT 36°54.4'N, LONG 75°55.9'W N d. LAT 36°54.6'N, LONG 75°55.8'W 2656: You are steering 257°T, and a light is picked up dead ahead at a distance of 13.3 miles at 2016. You change course to pass the light 4 miles off abeam to starboard. If you are making 18.5 knots, what is your ETA at the position 4 miles off the light?
Y a. 2057 N b. 2100 N c. 2103 N d. 2113 3078: If the speed necessary for reaching port at a designated time is 17.8 knots and the pitch of the propeller is 24.7 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% positive slip?
N a. 67 N b. 71 N c. 75 Y d. 79 3289: While steaming at 17.0 knots, your vessel consumes 382 barrels of fuel oil per day. In order to reduce consumption to 223 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 9.9 knots N b. 11.8 knots N c. 13.0 knots Y d. 14.2 knots 3290: While steaming at 15.5 knots, your vessel consumes 333 barrels of fuel oil per day. In order to reduce consumption to 176 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 11.3 knots Y b. 12.5 knots N c. 13.6 knots N d. 14.8 knots 3299: You have steamed 174 miles and consumed 18 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 416 miles?
N a. 34.9 tons N b. 38.4 tons Y c. 43.0 tons N d. 46.2 tons 3309: You have steamed 142 miles and consumed 15.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 472 miles?
N a. 36.5 tons Y b. 49.9 tons N c. 53.8 tons N d. 61.4 tons 3457: You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What speed will you make good along the track line?
N a. 12.2 knots N b. 12.7 knots Y c. 13.0 knots N d. 13.3 knots 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 3762: 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 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?
N a. 3°E Y b. 3°W N c. 4°E N d. 4°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 10602: At 1815 your GPS position is LAT 41°09.2'N, LONG 72°36.9'W. You are steering course 285° per standard magnetic compass at a speed of 16 knots. At 1909 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°08.5'N, LONG 72°53.7'W. What were your set and drift?
N a. 292°T at 1.8 knots N b. 243°T at 1.0 knot N c. 118°T at 1.9 knots Y d. 111°T at 2.1 knots 11010: What is the maximum speed permitted in Clinton Harbor?
Y a. 6 mph N b. 8 mph N c. 10 mph N d. 12 mph 11405: At 2125 your GPS position is LAT 41°05.7'N, LONG 72°46.5'W. At 2208 your position is LAT 41°03.3'N, LONG 72°37.9'W. What was your course made good by standard magnetic compass?
Y a. 123°psc N b. 287°psc N c. 303°psc N d. 326°psc 12206: You sight Bartlett Reef Light (LAT 41°16.5'N, LONG 72°08.2'W) in line with New London Harbor Light (LAT 41°19.0'N, LONG 72°05.4'W) and bearing 059° per standard magnetic compass. What is the compass deviation?
N a. 4°E Y b. 4°W N c. 10°E N d. 10°W 13701: Why are there no buoys charted at the approach to Sand Shoal Inlet (LAT 37°16'N, LONG 75°46'W)?
N a. No buoys are stationed there. N b. They frequently shift position due to heavy weather. Y c. They are frequently shifted to conform to the changing channel. N d. The buoys are being replaced with fixed lights. 13906: When approaching Block Island Sound from Long Island Sound, you will enter waters governed by the International Rules of the Road when you __________.
Y a. pass through The Race N b. cross the territorial sea boundary N c. exit Block Island Sound to the east or south N d. None of the above, as Long Island Sound is governed by the International Rules of the Road 15008: At 1920, the buoy forward of your starboard beam is __________.
N a. an interrupted quick flashing buoy N b. Hog Island Lighted Bell Buoy N c. South Light Buoy Y d. Sand Shoal Inlet Lighted Buoy "A" 15114: 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?
N a. 331°psc Y b. 329°psc N c. 311°psc N d. 309°psc 15158: At 1630, you reach point "A" and come right to 204°T. Your engine speed is 12 knots. Your 1715 position is LAT 37°09.8'N, LONG 75°37.4'W. The current was __________.
N a. 067°T at 1.1 knots Y b. 067°T at 1.5 knots N c. 247°T at 1.1 knots N d. 247°T at 1.6 knots 15269: New London Harbor is __________.
Y a. limited to vessels drawing less than 36 feet (10.8 meters) N b. closed during the winter season N c. subject to dangerous freshets in the fall N d. difficult to enter at night 15543: At 2236 Falkner Island Light bears 024° true at a range of 8.6 nm
What was the speed made good along the track line since your 2200 fix?
N a. 12.7 knots Y b. 13.5 knots N c. 13.9 knots N d. 14.2 knots 15644: At 2045 You take the following set of bearings:
Watch Hill Point Light bears 005° true
Montauk Point Light bears 350° true
Determine your 2103 fix.
Y a. LAT 41°09.2'N, LONG 71°52.5'W N b. LAT 41°09.1'N, LONG 71°52.2'W N c. LAT 41°09.0'N, LONG 71°52.9'W N d. LAT 41°08.8'N, LONG 71°52.5'W 15721: You are turning for 7.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
Y a. 8.8 mph N b. 7.9 mph N c. 7.8 mph N d. 6.8 mph 15826: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
Y a. U.S.C.G. Local Notice to Mariners N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Chart N d. List of Buoys and Daymarks 15867: You anticipate a maximum flood current north of Stratford Shoal. You will be set in which general direction?
N a. Northerly N b. Easterly N c. Southerly Y d. Westerly 15917: At what approximate distance would you expect Bartlett Reef Light to break the horizon, if the visibility is 27 nautical miles?
N a. 5.9 nm N b. 6.9 nm N c. 12.0 nm Y d. 12.8 nm 16107: If the visibility is 5 miles and you are in the red sector,
at what distance off should you sight Cape Henry Light?
N a. 15 miles N b. 13 miles N c. 11 miles Y d. 09 miles 16710: In clear weather, how far away will you sight Point Judith Light? (use charted range of 20 miles as nominal range)
N a. 9.2 nm N b. 10.6 nm N c. 12.3 nm Y d. 14.0 nm 16714: What was the current between 0520 and 0600?
N a. 201° at 1.0 knot N b. 201° at 1.5 knot N c. 021° at 1.0 knot Y d. 021° at 1.5 knots