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.
40: Which of the following statements regarding aids to navigation shown in the Army Corps. of Engineers map book is TRUE?
N a. The U.S. Army Corps.. of Engineers is responsible for placing and maintaining all aids to navigation. N b. Buoy positions as shown on the chart are exact. Y c. Buoys should always be given as wide a berth as possible. N d. Lights and daymarks are always shown in their exact location. 41: The Delta-Friar Point revetment on the LMR extends from mile __________.
N a. 648.5 - 645.5 LDB N b. 652.8 - 649.6 RDB Y c. 657.3 - 652.2 LDB N d. 645.6 - 641.4 RDB 54: What is the length of the trip?
N a. 1566.4 miles N b. 1334.6 miles N c. 1332.2 miles Y d. 1088.0 miles 105: On 19 January , your 0300 zone time DR position is LAT 22°13'N, LONG 40°19'W. You are on course 297°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0545 running fix?
Y a. LAT 22°29.0'N, LONG 41°06.5'W N b. LAT 22°30.3'N, LONG 41°00.2'W N c. LAT 22°31.1'N, LONG 42°58.6'W N d. LAT 22°33.0'N, LONG 42°55.9'W 119: What is the length of the trip?
N a. 405.8 miles N b. 553.0 miles Y c. 904.0 miles N d. 1136.8 miles 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 255: From your 0130 position, you change course to adjust for set and drift, and you later obtain the following lbearings:
Mattituck Inlet Light bearing 104.5°true
Falkner Island Light bearing 001°true
What is the latitude and longitude of the 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 Y c. LAT 41°02.0'N, LONG 72°39.5'W N d. LAT 41°02.6'N, LONG 72°39.0'W 345: The characteristic of Branford Reef Light is __________.
N a. flashing red every 4 seconds N b. flashing red every 3 seconds N c. flashing yellow every 4 seconds Y d. flashing white every 6 seconds 346: At 0415, you take the following bearings:
Stratford Point Light 329.5°pgc
Middle Ground Light 223.5°pgc
Old Field Point Light 199.5°pgc
Which statement is TRUE?
N a. The current's drift is greater than predicted. Y b. You are to the right of your intended track line. N c. The course made good since 0352 is 081°T. N d. Your fathometer reads about 76 fathoms. 348: At 0430, you take the following radar ranges:
Stratford Point Light @ 5.25 nm
Middle Ground Light @ 4.55 nm
What is your 0430 position?
N a. LAT 41°08.9'N, LONG 73°00.0'W N b. LAT 41°05.0'N, LONG 73°01.1'W Y c. LAT 41°05.8'N, LONG 73°00.8'W N d. LAT 41°06.5'N, LONG 73°01.4'W 387: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
Y a. 087°pgc N b. 085°pgc N c. 081°pgc N d. 079°pgc 413: A vessel steams 1106 miles on course 249°T from LAT 13°30.0'N, LONG 144°30.3'E. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 07°01.0'N, LONG 127°02.0'E Y b. LAT 06°54.0'N, LONG 127°08.0'E N c. LAT 06°50.0'N, LONG 127°13.0'E N d. LAT 06°46.0'N, LONG 127°17.0'E 437: At 0227, you are on course 087°T at 10 knots. What course per standard magnetic compass should you steer to make good your true course?
N a. 109°psc Y b. 105°psc N c. 102°psc N d. 099°psc 474: You are on a great circle track departing from LAT 25°50.0'N, LONG 77°00.0'W and your initial course is 061.7°T. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W.
What is the distance along the great circle track between the point of departure and the vertex?
N a. 2735.1 miles Y b. 2664.9 miles N c. 2583.2 miles N d. 2420.0 miles 526: Your vessel receives a distress call from a vessel reporting her position as LAT 35°01.0'S, LONG 18°51.0'W. Your position is LAT 35°01.0'S, LONG 21°42.0'W. Determine the true course and distance from your vessel to the vessel in distress by parallel sailing.
Y a. 090°T, 140.0 miles N b. 090°T, 189.2 miles N c. 270°T, 140.0 miles N d. 270°T, 189.2 miles 594: After you get underway, what is the first river gage you will pass?
N a. Head of Passes Y b. Donaldsonville N c. Baton Rouge N d. Red River Landing 833: On 17 November , in DR position LAT 01°14.4'S, LONG 148°45.5'E, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 05h 31m 42s, and the chronometer error is 01m 50s fast. The sextant altitude (hs) is 64°41.1'. The index error is 1.8' off the arc, and your height of eye is 50 feet. What is the latitude at meridian transit?
N a. LAT 01°14.4'S N b. LAT 01°16.3'S Y c. LAT 01°18.0'S N d. LAT 01°20.2'S 1240: As you approach Ashland Light (mile 378.1 AHP), which type of daymark would you see on the light structure?
N a. Green square N b. Green diamond N c. Red diamond Y d. Red triangle 1308: At Filter Point Light (mile 475 AHP) there are 2 close straight dashed lines on the map passing through the black dots. What do these lines represent?
N a. Submerged oil pipelines N b. Submerged gas pipelines N c. Submerged telephone cables Y d. Aerial power cables 1496: On 3 October , your 2122 ZT position is LAT 26°32'N, LONG 84°26'W. You observe Polaris bearing 359.8°pgc. At the time of the observation the helmsman noted that he was heading 106°pgc and 107°psc. The variation is 0°. What is the deviation for that heading?
N a. 1°E Y b. 0° N c. 1°W N d. 2°W 1642: From your 2129 position you reduce engine speed to 14 knots. What is the course to make good from your 2129 position to arrive 0.3 mile north of Lighted Whistle Buoy "NCA" (LL#375) assuming no set and drift?
N a. 216°T N b. 219°T Y c. 222°T N d. 225°T 1704: 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. N b. The buoys are maintained on station year round. Y c. Buoy positions on the chart are approximate. N d. The buoys do not shift positions due to permanent moorings. 1782: At 2043 ZT, on 13 October , in DR position LAT 43°57.3'S, LONG 147°16.0'E, you observe an amplitude of Venus. The planet is about one Sun's diameter above the horizon and bears 236.2°pgc. The variation is 15°E. What is the gyro error?
Y a. 0.0° N b. 0.9°E N c. 1.8°E N d. 0.4°W 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 1921: On 17 March , your 1845 DR position is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing 340°T at an observed altitude (Ho) of 66°25.1'. The chronometer reads 10h 47m 49s, and is 1m 54s fast. What star did you observe?
Y a. Capella N b. Mirfak N c. Pollux N d. Rigel 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 2031: After passing Wilkinson Lt. (mile 310.0 AHP) you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations N c. keep as close to the right descending bank as safety permits Y d. keep as close to the left descending bank as safety permits 2594: What will be the current at Port Jefferson entrance at 0130 on December 5, 1983?
N a. 1.4 knots, flood N b. 1.4 knots, ebb N c. 0.8 knot, flood Y d. 0.8 knot, ebb 2696: You are underway on course 059°T at a speed of 13.8 knots.
You sight a light bearing 064°T at a radar range of 5.1 miles at 1839. If you change course at 1845, what is the course to steer to leave the light abeam to starboard at 1.0 mile?
N a. 047°T Y b. 050°T N c. 053°T N d. 058°T 2717: The Natchez Gage reads 16.3 feet. The high point on your towboat is 38 feet above water. What is the vertical clearance when you pass under the Natchez Highway Bridge?
N a. 79.0 feet Y b. 71.7 feet N c. 65.2 feet N d. 59.1 feet 2860: Your vessel is on a course of 144°T at 16 knots. At 0126 a light bears 166.5°T, and at 0152 the light bears 189°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0205, 4.1 miles Y b. 0210, 4.8 miles N c. 0215, 6.0 miles N d. 0220, 6.4 miles 2864: You are steering a course of 316°T, and a light bears 34° on the port bow at 2053. At 2126 the same light bears 68° on the port bow, and you have run 5 miles since the first bearing. What is the ETA when the lighthouse is abeam?
Y a. 2139 N b. 2143 N c. 2149 N d. 2159 2885: Your vessel is steering 194°T at 13 knots. At 0116 a light bears 243°T, and at 0147 the same light bears 267°T. What will be your distance off abeam?
N a. 11.2 miles N b. 11.6 miles Y c. 12.0 miles N d. 12.5 miles 3054: The propeller on a vessel has a diameter of 22.8 feet and a pitch of 19.3 feet. What would be the apparent slip if the vessel cruised 287 miles in a 24 hour day (observed distance) at an average RPM of 67?
N a. -6.3% Y b. +6.3% N c. -24.0% N d. +24.0% 3059: The propeller on a vessel has a diameter of 21.5 feet and a pitch of 24.5 feet. What would be the apparent slip if the vessel cruised 458 miles in a 23 hour day (observed distance) at an average RPM of 78?
N a. +5.6% Y b. -5.6% N c. +12.3% N d. -12.3% 3082: The speed of advance necessary to arrive in port at a designated time is 15.8 knots. The pitch of the propeller is 20.75 feet. You estimate 5% positive slip. How many RPM must you turn to make the necessary speed?
N a. 73.5 N b. 76.2 N c. 79.9 Y d. 81.2 3305: You have steamed 201 miles and consumed 18.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 482 miles?
N a. 25.2 tons Y b. 43.2 tons N c. 52.6 tons N d. 103.5 tons 3629: You desire to make good a true course of 129°. The variation is 7°E, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. An easterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Y a. 114°psc N b. 116°psc N c. 122°psc N d. 126°psc 3637: You desire to make good a true course of 347°. The variation is 11°E, magnetic compass deviation is 7°W, and gyrocompass error is 4°W. A north by east wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 339°psc N b. 343°psc Y c. 347°psc N d. 351°psc 3751: While proceeding up a channel on course 010° per gyro compass, you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check of the chart shows the range to be 009°T and the variation to be 15°W. If the ship's course is 026°psc, what is the deviation for the present heading?
Y a. 2°W N b. 2°E N c. 1°W N d. 1°E 10500: At 1712 your GPS indicates a position of LAT 36°54.8'N, LONG 75°39.8'W. You are on course 319° per standard magnetic compass at a speed of 9.9 knots. At 1800 your GPS indicates your position at LAT 37°00.0'N, LONG 75°45.8'W. What were the set and drift?
N a. 262°T at 0.9 knot N b. 267°T at 1.3 knots Y c. 087°T at 1.2 knots N d. 093°T at 0.8 knot 10506: At 0919 your position is LAT 37°00.0'N, LONG 75°30.0'W. You are on course 270°T at 8.7 knots. At 1031 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the set and drift?
N a. 239° at 0.8 knot Y b. 252° at 1.3 knots N c. 060° at 0.7 knot N d. 073° at 1.2 knots 10907: What is the time (DST ZD +4) of the AM high tide at York Point, Poquoson River on 8 September 1983?
N a. 0955 Y b. 1048 N c. 1055 N d. 1102 12105: While in the Back River, you sight the two tanks along the Northwest Branch (vicinity LAT 37°05.6'N, LONG 76°22.0'W) in line bearing 274°psc. If your vessel is heading 300°psc, what is TRUE?
Y a. There is no deviation. N b. The deviation is equal to the variation. N c. The deviation is 9°E. N d. The deviation is 0° only for a bearing of 274°psc. 13003: At 2102 your position is LAT 41°02.9'N, LONG 72°57.4'W. You are making turns for 16 knots. What is your ETA at a position 5 miles due south of Falkner Island Light?
N a. 2149 Y b. 2155 N c. 2159 N d. 2204 13908: Montauk Point Light is 168 feet above what reference level?
N a. Mean low water N b. Mean tide level N c. Ground level Y d. Mean high water 14404: You are underway and proceeding in an easterly direction on the Columbia River. You position your vessel in the middle of the channel and bring Government Island Lower Range in line over your bow. What should your fathometer read at this position, if the staff gauge at Portland reads 10.0 feet?
Y a. 15 feet N b. 24 feet N c. 28 feet N d. 31 feet 14702: At 2200 your vessel is at mile 95 proceeding in an easterly direction on the Columbia River. At 0400 the following morning, you pass the 125 mile mark. How many nautical miles have you traveled since 2200?
N a. 22.6 N b. 24.3 Y c. 26.1 N d. 34.5 15618: If you want a more detailed chart of the area at your 2115 DR position, which chart should you use?
N a. 12222 Y b. 12224 N c. 12225 N d. 12238 15625: The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1300, 5 January, and last for six hours. What minimum speed over the ground must you make from Red River Landing Gage in order not to be delayed?
N a. 6.0 mph Y b. 6.4 mph N c. 6.8 mph N d. 7.3 mph 15666: At 0815, visibility is excellent and you can see Montauk Point. Montauk Point Light is __________.
N a. shown from a brown tower N b. equipped with a fog diaphone Y c. lighted 24 hours N d. is 79 feet (24 meters) high 15958: Your 1752 position is __________.
N a. less than 0.2 mile to the west of York Spit Channel N b. less than 0.2 mile to the east of York Spit Channel Y c. more than 0.2 mile to the west of York Spit Channel N d. more than 0.2 mile to the east of York Spit Channel 16006: 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?
N a. LAT 41°05.0'N, LONG 73°08.0'W Y b. LAT 41°05.2'N, LONG 73°07.8'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 16461: At 0400, you obtain the following information:
Sand Shoal Inlet South Light bearing 303° true @ 7.1nm
What is your 0400 position?
N a. LAT 37°14.2'N, LONG 75°40.7'W N b. LAT 37°14.1'N, LONG 75°41.3'W N c. LAT 37°14.1'N, LONG 75°40.5'W Y d. LAT 37°14.0'N, LONG 75°40.7'W 16846: Your vessel's heading is 330°pgc and 345°psc with a 2°E gyro error. What is the deviation on this heading?
N a. 0° Y b. 3°W N c. 4°E N d. 7°W