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.
34: You estimate the current at 3.0 mph. What is the speed over the ground?
N a. 9.5 mph N b. 7.5 mph N c. 4.5 mph Y d. 3.5 mph 77: You pass Morrison Towhead Light (mile 890.5 AHP) at 1723. What was your average speed since leaving Cairo?
N a. 8.8 mph Y b. 8.5 mph N c. 7.8 mph N d. 7.5 mph 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 215: As an option to heading into Long Island Sound, you consider anchoring in the vicinity of the Gardiners Point Ruins at the north end of Gardiners Island. What is the minimum recommended distance from the ruins for fishing, trawling, or anchoring?
N a. 1.0 mile N b. 0.8 mile N c. 0.5 mile Y d. 300 yards (91 meters) 320: At 2150, your position is LAT 36°57.2'N, LONG 76°01.3'W. In this position on the chart, you note a light magenta line running in a direction of 030°T. This line indicates the limits of __________.
Y a. a pilotage area N b. a precautionary area N c. the Cape Henry Light red sector N d. chart 12222 341: You are on course 082°T, and the engines are turning for 8 knots. At 0352, you take the following bearings:
Stratford Point Light 016°pgc Stratford Shoal (Middle Ground) Light 137°pgc
What is your 0352 position?
Y a. LAT 41°05.2'N, LONG 73°07.8'W N b. LAT 41°05.4'N, LONG 73°07.3'W N c. LAT 41°05.3'N, LONG 73°07.5'W N d. LAT 41°05.4'N, LONG 73°07.7'W 347: If you change course at 0420, what is the course to make good to leave Twenty Eight Foot Shoal Lighted Buoy abeam to port at 1 mile?
N a. 086°T Y b. 084°T N c. 082°T N d. 079°T 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 430: At 0820, you change course to 301°psc and reduce speed to 7.5 knots. At 0900, you take the following visual bearings:
Branford Reef Light 023°psc
New Haven Light 293°psc
Tweed Airport Aerobeacon 332°psc
Your 0900 position is __________.
N a. LAT 41°11.9'N, LONG 72°50.6'W Y b. LAT 41°12.1'N, LONG 72°48.6'W N c. LAT 41°12.3'N, LONG 72°47.7'W N d. LAT 41°12.5'N, LONG 72°44.3'W 431: At 0900, the current is flooding in a direction of 350°T at 1.2 knots. If your engines are turning RPMs for 9 knots, which course should you steer per standard magnetic compass to make good a course of 297° true?
N a. 319°psc N b. 317°psc N c. 311°psc Y d. 302°psc 548: You are bound for New London. Where will you cross the demarcation line and be governed by the Inland Rules of the Road?
N a. You are already governed by the Inland Rules. N b. Above the Thames River Bridge Y c. In the Race N d. You will not be governed by the Rules. 556: Your 0530 position is LAT 41°04.9'N, LONG 73°01.1'W. What is the course per standard magnetic compass to a position 1.0 mile south of Twenty Eight Foot Shoal "TE" buoy?
Y a. 099.5°psc N b. 096.0°psc N c. 092.5°psc N d. 082.0°psc 641: At 1032 on 24 June, you pass Carolina Landing Light(508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
Y a. 0.5 mph N b. 1.5 mph N c. 5.7 mph N d. 8.5 mph 1090: At 0450 zone time, on 25 June , your DR position is LAT 21°26.0'N, LONG 160°24.5'W. You are steering course 100°T at a speed of 10 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0514 running fix. NP-0020
N a. LAT 21°27.0'N, LONG 160°17.0'W Y b. LAT 21°25.0'N, LONG 160°18.0'W N c. LAT 21°22.0'N, LONG 160°17.0'W N d. LAT 21°20.0'N, LONG 160°15.5'W 1136: The Arkansas City Yellow Bend revetment on the LMR extends from mile __________.
Y a. 555.0-549.7 RDB N b. 549.0-548.5 RDB N c. 556.9-554.9 LDB N d. 548.5-546.5 LDB 1191: On 14 October , your 0800 ZT DR position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1142 N b. 1148 N c. 1152 Y d. 1156 1198: On 3 October , your 0830 zone time DR position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1201 N b. 1158 N c. 1155 N d. 1152 1201: On 10 October , your 0930 zone time position is LAT 25°00.0'S, LONG 164°38.6'W. Your vessel is on course 180°T at a speed to 10.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1145 N b. 1151 N c. 1203 N d. 1206 1425: At 1227, on 19 October, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 0930 the following day?
N a. 5.2 mph N b. 5.6 mph N c. 5.9 mph Y d. 6.3 mph 1475: On 26 February , your vessel's 1615 ZT DR position is LAT 25°14'S, LONG 57°22'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 8h 13m 19s, and the Sun is bearing 266.0° per standard magnetic compass. The chronometer error is 01m 46s slow, and the variation in the area is 6°E. What is the deviation of the standard compass?
Y a. 1.7°E N b. 3.4°W N c. 7.7°E N d. 13.7°E 1879: On 13 September , your 1830 ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint unidentifiable star through a hole in the clouds. The star bore 351.5°T at a sextant altitude (hs) of 62°05.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The index error is 1.0' off the arc, and the height of eye is 52 feet. What star did you observe?
N a. Alpha Herculis N b. Kappa Scorpii N c. Alpha Arae Y d. Beta Ophiuchi 1892: On 22 July , your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 091°T at an observed altitude (Ho) of 64°35.2'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
Y a. Hamal N b. Rigel N c. Menkar N d. Acamar 1929: You are taking a time tick using the 1930 signal from Rio de Janeiro, Brazil. You hear the preparatory signal "CQ DE PPE" repeated several times followed by a short dash (0.4 sec), 60 dots (0.1 sec each) and another short dash. At the beginning of the last dash, the comparing watch reads 07h 30m 13s. When compared to the chronometer, the comparing watch reads 07h 31m 56s, and the chronometer reads 07h 30m 21s. What is the chronometer error?
N a. 0m 13s fast N b. 1m 43s fast Y c. 1m 22s slow N d. 1m 48s slow 2001: On 3 February , your 0451 zone time DR position is LAT 24°15.0'S, LONG 124°24.0'W. Considering their magnitude, azimuth and altitude, which group includes the three bodies best suited for a fix at star time?
Y a. Alphard, Denebola, Acrux N b. Spica, Venus, Procyon N c. Jupiter, Dubhe, Antares N d. Mars, Arcturus, Spica 2169: At 0600 ZT, on 24 July , your DR position is LAT 22°37'N, LONG 32°45'W. You are steering 185°T at a speed of 20.0 knots. Determine the computed altitude (Hc) and azimuth (Zn) for an observation of the Sun's lower limb taken at 1030 ZT. At this time the chronometer reads 00h 30m 16s and is 0m 31s slow.
N a. Hc 64°27.5' Zn 092.3° N b. Hc 64°30.8' Zn 090.1° Y c. Hc 64°41.7' Zn 087.8° N d. Hc 64°44.2' Zn 094.7° 2182: On 18 August , at 0600 ZT, morning stars were observed, and the vessel's position was determined to be LAT 19°48'N, LONG 108° 34'W. Your vessel is steaming on course 166°T at a speed of 16 knots. An observation of the Sun's lower limb is made at 1036 ZT. The chronometer reads 05h 34m 48s and is slow 01m 24s. What is the computed altitude (Hc) and azimuth (Zn) for this 1036 ZT observation using the assumed position method?
N a. Hc 65°18.5', Zn 102.1° Y b. Hc 65°14.8', Zn 100.4° N c. Hc 65°11.3', Zn 099.4° N d. Hc 65°07.2', Zn 101.2° 2202: After entering Milliken Bend (mile 455 AHP) you wish to locate the river service in Madison Parish, Louisiana. The river service is indicated by the square containing which number?
N a. 5 Y b. 4 N c. 3 N d. 2 2287: You observe the lower limb of the Sun at a sextant altitude (hs) of 34°51.4' on 18 October . The index error is 2.0' off the arc. The height of eye is 54 feet (16.5 meters). What is the observed altitude (Ho)?
Y a. 35°01.2' N b. 35°03.6' N c. 35°05.2' N d. 35°07.4' 2339: You have steamed 1260 miles at 18 knots, and consumed 205 tons of fuel. If you have to steam 1423 miles to complete the voyage, how many tons of fuel will be consumed while steaming at 16 knots?
N a. 143 tons N b. 183 tons Y c. 293 tons N d. 333 tons 2591: Which statement best describes the shoreline at Mount Misery?
N a. Wooded, barren hills with a rocky beach N b. Low, rocky cliffs with heavily wooded hills inland N c. Sand dunes and beaches with a mud and sand bottom Y d. Sand bluffs 60 feet high and banks dug out by sand and gravel companies 2777: The Helena Gage reads 2.3 feet. The high point on your towboat is 26 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 76.0 feet N b. 84.2 feet N c. 89.5 feet Y d. 90.7 feet 2780: Which type of daymark will you see as you approach Old Levee Light (mile 385.2 AHP)?
N a. Green diamond N b. Red square Y c. Green square N d. Private aid - no daymark 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 3070: If the speed necessary for reaching port at a designated time is 19.6 knots and the pitch of the propeller is 24.6 feet, how many revolutions per minute will the shaft have to turn, assuming a 5% positive slip?
N a. 76 Y b. 85 N c. 97 N d. 106 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 3301: You have steamed 217 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 362 miles?
N a. 33.8 tons Y b. 38.4 tons N c. 42.6 tons N d. 45.7 tons 3616: You desire to make good a true course of 046°. The variation is 6°E, magnetic compass deviation is 12°W, and the gyrocompass error is 3°W. A northerly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make good the true course?
Y a. 047°psc N b. 049°psc N c. 052°psc N d. 057°psc 3769: Entering a harbor, you take a bearing on a range and get 338° per gyrocompass (pgc). The true bearing from the chart is 340°T. Variation for the area is 14°E. Your course is 329° per standard magnetic compass (psc) and 338°pgc. The deviation on this heading is __________.
N a. 3°E Y b. 3°W N c. 5°E N d. 5°W 10900: The abandoned lighthouse west of Cape Henry Light is __________.
N a. painted black and white N b. a low mound of rubble Y c. a gray, pyramidal structure N d. a steel skeleton structure 11012: Which statement is FALSE with regard to Plum Island Harbor West Dolphin Light?
N a. The light is maintained from sundown to 0130 daily. Y b. The light is white. N c. The light is maintained by the U.S. Dept. of Agriculture. N d. The light is located on a dolphin. 11900: What is the true course to steer between the entrance to Great Salt Pond (LAT 41°12.0'N, LONG 71°35.6'W) and the entrance to Quonochontaug Pond (LAT 41°19.8'N, LONG 71°43.2'W), if you are turning for 8.5 knots, and you allow for a current of 247°T at 1.2 knots, and an easterly wind is causing 2° of leeway?
N a. 314°T N b. 320°T N c. 328°T Y d. 333°T 14003: At 1430 your vessel passes under the Interstate 5 highway bridge east bound. Your engines are making RPM's for 12 mph. If the current is ebbing at 3 mph, what is your ETA at Bonneville Lock?
N a. 1744 N b. 1753 N c. 1834 Y d. 1848 14701: How many nautical miles are between mile 44 and mile 163 on the Columbia River?
N a. 98.6 Y b. 103.4 N c. 119.5 N d. 136.9 15268: Your vessel is proceeding up New London Harbor Channel, and you are in line with the range. What would be your course per standard magnetic compass?
N a. 352° N b. 354° N c. 002° Y d. 007° 15408: From your 1430 fix, you order turns for 8 knots. You steer 045°T and experience no set and drift. At what time would you expect to have New Point Comfort Spit Light "4" abeam?
N a. 1452 Y b. 1458 N c. 1504 N d. 1510 15517: 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 muck with grainy surface 15646: At 2229 the gyro fails. What is the course to steer per standard magnetic compass to make good 206°T, if you allow 3° leeway for southeasterly winds?
N a. 187° N b. 191° Y c. 217° N d. 220° 15846: At 2200, you alter course to 204°T, at 14 knots. You expect a current on this leg of the trip, setting 325° at 1.5 knots. Which course should you steer per gyro compass to make good the true course?
N a. 184°pgc N b. 190°pgc N c. 194°pgc Y d. 201°pgc 16058: At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the speed made good between 1730 and 1750?
N a. 7.5 knots N b. 7.8 knots N c. 8.1 knots Y d. 8.4 knots 16256: What is the course per gyro compass from the anchorage to point A located 0.5 mile east of Cape Charles Lighted Bell Buoy 14?
N a. 180° Y b. 184° N c. 198° N d. 199.5° 16563: From your 1850 fix, you come left to a course of 280°T,
while maintaining a speed of 10 knots. Which combination of available Loran-C lines would be best for position determination?
Y a. 9960-Y and 9960-W N b. 9960-X and 9960-Y N c. 9960-W and 9960-X N d. All 3 combinations are equal. 16609: What was the speed made good between 2114 and 2142?
N a. 12.3 knots N b. 12.0 knots N c. 11.7 knots Y d. 11.4 knots 16639: You estimate the current to be 125° at 0.6 knot, and the wind is westerly causing 3° of leeway. What course should you steer per gyro compass to make good 347°T while turning for 12.5 knots?
Y a. 340° pgc N b. 343° pgc N c. 346° pgc N d. 349° pgc