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.
80: The Helena Gage reads 9.4 feet. The high point on your towboat is 46 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 106.1 feet N b. 79.5 feet Y c. 64.2 feet N d. 56.0 feet 158: Which daymark should you see as you approach French Point Light (mile 915.4 AHP)?
Y a. Red triangle N b. Green square N c. Red diamond N d. Green diamond 185: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
Y a. 150°T at 1.6 knot N b. 150°T at 0.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 218: If there is no current, what is the course per gyro compass from your 1600 position to point A located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"?
N a. 199°pgc N b. 196°pgc Y c. 193°pgc N d. 190°pgc 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 381: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City?
Y a. 129°pgc N b. 123°pgc N c. 117°pgc N d. 109°pgc 384: What is the course per standard magnetic compass between points "A" and "B"?
N a. 099.5° Y b. 098.5° N c. 095.5° N d. 094.5° 510: You observe the star Deneb at a sextant altitude (hs) of 48°34.8' on 16 December . The index error is 4.0' off the arc. The height of eye is 58 feet. What is the observed altitude (Ho)?
N a. 48°02.9' Y b. 48°30.5' N c. 48°31.4' N d. 48°46.5' 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 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. 609: At 0915 zone time, on 7 April , you depart San Francisco, LAT 37°48.5'N, LONG 122°24.0'W (ZD +8). You are bound for Kobe, LAT 34°40.0'N, LONG 135°12.0'E, and you estimate your speed of advance at 17 knots. The distance is 4,819 miles. What is your estimated zone time of arrival at Kobe?
N a. 0343, 18 April N b. 1243, 19 April Y c. 2143, 19 April N d. 0443, 20 April 1103: On 25 August , your 0300 zone time DR position is LAT 21°28.0'N, LONG 167°48.0'E. You are on course 248°T at a speed of 12 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0032
N a. LAT 20°52.4'N, LONG 167°32.1'E Y b. LAT 20°57.1'N, LONG 167°01.0'E N c. LAT 20°59.5'N, LONG 166°54.8'E N d. LAT 21°06.0'N, LONG 167°10.9'E 1117: What is the length of the trip?
N a. 720.8 miles N b. 777.4 miles Y c. 897.2 miles N d. 906.3 miles 1140: At 0921, on 24 May, 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. 3.4 mph N b. 2.0 mph Y c. 1.7 mph N d. 1.4 mph 1165: 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. N c. Buoys should be passed as close as possible. Y d. Setting a buoy is the act of placing a buoy on assigned position in the water. 1216: It is 8 March and you are keeping zone time -3. You are on course 104°T, speed 21 knots. Your 0830 DR position is LAT 25°35.0'S, LONG 66°34.0'E. What is the time of the second estimate of LAN by ship's clocks?
Y a. 10h 41m 26s N b. 11h 15m 34s N c. 11h 17m 32s N d. 11h 36m 54s 1406: Which of the following describes the river at Cypress Bend, mile 569.0 AHP?
N a. There are revetments on both banks. Y b. The river is three tenths of a mile wide. N c. There is dredge spoil on both banks. N d. There is a turning basin located on the LDB. 1730: What is the distance from Arkansas City, AR, to St. Louis, MO, on the Mississippi River System?
Y a. 584 miles N b. 617 miles N c. 733 miles N d. 832 miles 1881: 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 148.0°T at a sextant altitude (hs) of 32°24.3'. The chronometer read 11h 24m 39s and is 05m 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. Beta Gruis Y b. Alpha Tucanae N c. Beta Aquarii N d. Alpha Indi 2003: On 20 June , your 1742 zone time DR position is LAT 24°55.0'S, LONG 8°19.6'E. Considering their magnitude, azimuth, and altitude, which three stars are best suited for a fix at star time?
Y a. Regulus, Canopus, Antares N b. Spica, Arcturus, Alioth N c. Arcturus, Achernar, Pollux N d. Avior, Sabik, Fomalhaut 2021: On 29 April , your 0300 ZT DR position is LAT 28°39'N, LONG 168°03'E. You are on course 108°T at a speed of 22 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
Y a. Moon, Alpheratz, Polaris N b. Deneb, Dubhe, Zubenelgenubi N c. Venus, Polaris, Arcturus N d. Moon, Altair, Sabik 2076: What is the mile point of the Fulton Gage?
Y a. 778 AHP N b. 687 AHP N c. 632 AHP N d. 598 AHP 2212: At 1650 you decrease speed to make good 7.1 mph. At 2020 you are __________.
Y a. abeam of Old River Control Structure Light N b. entering the Vicksburg District of the U.S. Army Corps. of Engineers N c. at Palmetto Point N d. at Latitude 31°10'N 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 2289: You observe the lower limb of the Sun at a sextant altitude (hs) of 38°07.5' on 8 August . The index error is 5.2' off the arc. The height of eye is 72 feet (22 meters). What is the observed altitude (Ho)?
N a. 38°08.4' N b. 38°13.3' Y c. 38°19.2' N d. 38°23.4' 2694: While on a course of 152°T, a light bears 9° on the port bow at a distance of 11.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?
N a. 153° Y b. 158° N c. 163° N d. 167° 2694: While on a course of 152°T, a light bears 9° on the port bow at a distance of 11.6 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?
N a. 153° Y b. 158° N c. 163° N d. 167° 2706: While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of the light leaving it to port?
N a. 208°pgc N b. 210°pgc N c. 212°pgc Y d. 214°pgc 3090: If the pitch of the propeller is 26.3 feet, and the revolutions per day are 87,421, calculate the day's run allowing 7% negative slip.
N a. 351.7 miles N b. 378.1 miles Y c. 404.6 miles N d. 419.3 miles 3259: You have steamed 607 miles at 17.0 knots, and consumed 121 tons of fuel. If you have 479 tons of usable fuel remaining, how far can you steam at 14.5 knots?
N a. 1211 miles N b. 1748 miles N c. 2817 miles Y d. 3303 miles 3302: You have steamed 132 miles and consumed 14.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 289 miles?
N a. 21.6 tons N b. 24.5 tons N c. 27.9 tons Y d. 30.7 tons 3308: You have steamed 142 miles and consumed 21.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 465 miles?
N a. 43.4 tons N b. 57.6 tons Y c. 68.8 tons N d. 72.8 tons 3604: You wish to make good a course of 258°T, allowing 4° leeway for northerly winds. The variation is 21°W. What should you steer per standard magnetic compass to make good 258°T?
DEVIATION TABLE
MAGNETIC HDG DEVIATION
285° 5°E
270° 3°E
255° 1°E
240° 1°W
N a. 242°psc N b. 271°psc Y c. 278°psc N d. 288°psc 3619: Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?
N a. 128°T N b. 136°T N c. 162°T Y d. 170°T 3642: You are steering 154° per gyrocompass. The wind is northeast by east, causing 4° leeway. The gyro error is 3° east, variation is 11° west, and deviation is 7°E. What is the true course made good?
N a. 151°T N b. 158°T Y c. 161°T N d. 164°T 10202: Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming that there is no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position midway between New Haven Harbor Channel buoys #1 and #2?
N a. 137°psc N b. 309°psc Y c. 315°psc N d. 319°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 11305: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2000 your position is LAT 36°59.5'N, LONG 75°37.0'W. What was the speed made good?
N a. 5.6 knots N b. 6.6 knots Y c. 8.2 knots N d. 9.1 knots 12604: You are on course 082° per standard magnetic compass (psc) when you take the following bearings: New London Ledge Light - 036.5°psc Little Gull Island Light - 157.0°psc Saybrook Break Water Light - 294.5°psc What is your position?
N a. LAT 41°02.3'N, LONG 72°04.5'W N b. LAT 41°09.5'N, LONG 72°07.1'W Y c. LAT 41°13.6'N, LONG 72°07.5'W N d. LAT 41°14.1'N, LONG 72°12.8'W 12700: You are on course 073° per standard magnetic compass when you take the following bearings: Watch Hill Point Light 037°psc Montauk Point Light 179°psc Race Rock Light 289°psc What is your position?
N a. LAT 41°13.6'N, LONG 71°54.6'W N b. LAT 41°13.7'N, LONG 71°53.8'W N c. LAT 41°13.7'N, LONG 71°54.9'W Y d. LAT 41°13.8'N, LONG 71°54.3'W 14001: At 1745 Lady Island Range is in line dead ahead and Government Island Upper Range is in line on your starboard bow. Your vessel is steaming in a westerly direction. At 1851 you pass under the Interstate 5 highway bridge. What speed have you averaged?
N a. 10 mph Y b. 11 mph N c. 12 mph N d. 13 mph 15068: Long Sand Shoal __________.
N a. shoals gradually on the north and south sides Y b. is hard and lumpy N c. shows breakers when northerly winds exceed 10 knots N d. has gray sand with scattered shells 15159: From your 1715, fix you steer 214°T at 12 knots. At 1800,
you take the following bearings:
Cape Charles Light bearing 296° true
Cape Henry light bearing 242° true
Your 1800 position is __________.
N a. LAT 37°02.8'N, LONG 75°43.9'W Y b. LAT 37°02.9'N, LONG 75°43.1'W N c. LAT 37°03.0'N, LONG 75°43.3'W N d. LAT 37°03.1'N, LONG 75°42.8'W 15345: You are making good a course of 060°T at a speed of 13.5 knots. At 1855 Block Island North Light bears 086°T; at 1910 Block Island North Light bears 108°T; and at 1930 the same light bears 184°T. Which statement is TRUE about your 1930 running fix position?
Y a. You are on the edge of a cable area. N b. The bottom is mud, sand, and clay. N c. The wavy magenta lines to the north through east of your position are designated lobstering areas. N d. You are inside the 120 fathom curve 15370: If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.
N a. 11.1 miles N b. 12.8 miles Y c. 15.6 miles N d. 18.0 miles 15645: You round Montauk Point and steer to make good 206°T. Speed is increased to 13.0 knots. The current, if any, is unknown. The visibility has improved and is estimated to be 5 miles. At 2144 Montauk Point Light bears 273°T. At 2202 the same light bears 320°T. Which statement concerning your 2202 running fix is TRUE?
N a. You are inside the lobster pot area. Y b. The fathometer reads about 12 fathoms. N c. You are inside of the 90 foot curve. N d. You are outside the boundary of the Territorial Sea and Contiguous Zone. 15669: The area between Block Island and Montauk Point that is bounded by dashed magenta lines is a __________.
N a. naval exercise area N b. fish trap area Y c. submerged cable area N d. restricted navigation area 15970: If you have 16.3 miles to reach your destination from your 2000 position and want to be there at 2230, what speed should you make good?
N a. 5.7 knots N b. 6.1 knots Y c. 6.5 knots N d. 6.9 knots 16220: At 0930, your position is LAT 41°16.5'N, LONG 71°41.4'W,
and you are turning for 7 knots. Allowing 3° leeway for southerly winds and estimating the current as 035° at 0.3
knot, what is the course to steer (pgc) to point "B"?
N a. 089°pgc N b. 091°pgc N c. 093°pgc Y d. 096°pgc 16343: At 2302 you change course to compensate for an estimated current of 090°T, at 1.0 knot. What course per gyrocompass will you steer to leave Endeavor Shoals Lighted Gong Buoy "3" abeam to port at 1 mile?
N a. 324°pgc Y b. 327°pgc N c. 330°pgc N d. 333°pgc 16607: You depart from the position in the previous question at 2114 and make good 12 knots on a course of 040°T. At what time will you sight New Haven Light if the visibility is 11 miles?
N a. The light is visible at 2114. N b. 2140 N c. 2152 Y d. 2159 16713: At 0600 you take the following bearings:
Point Judith Light bearing 063°pgc
Block Island North Reef Light bearing 144°pgc
What is your 0600 position?
N a. LAT 41°18.1'N, LONG 71°38.3'W Y b. LAT 41°18.3'N, LONG 71°38.7'W N c. LAT 41°18.4'N, LONG 72°38.1'W N d. LAT 41°18.5'N, LONG 71°38.9'W 16840: Visibility is exceptionally clear. At approximately what distance did Chesapeake Light become visible?
N a. 19.2 miles Y b. 21.0 miles N c. 22.7 miles N d. 24.0 miles