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.
58: What daymark will you see as you approach Warnicott Bar Lt. (mile 351.3 AHP)?
N a. Red diamond N b. Red triangle N c. White square Y d. Green square 62: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical clearance as you pass under the Greenville Highway Bridge?
N a. 75.4 feet Y b. 65.4 feet N c. 54.2 feet N d. 44.4 feet 148: You are turning for 8.2 mph and estimate the current at 1.5 mph. What is you speed over the ground?
Y a. 9.7 N b. 8.2 N c. 7.8 N d. 6.7 268: What publication contains information on the navigational hazards in the vicinity of Falkner Island?
N a. The navigational regulations in Title 46, Code of Federal Regulations Y b. U.S. Coast Pilot N c. U.S. Coast Guard Light List N d. Inland Navigation Rules 279: At 1752, your position is LAT 37°04.3'N, LONG 76°06.4'W. On a flood current you should expect to be set to the __________.
N a. south southeast N b. south southwest N c. east southeast Y d. north northwest 284: Based on a DR, at approximately 1817 you would expect to __________.
N a. enter a traffic separation zone N b. cross a submerged pipeline Y c. depart a regulated area N d. depart a restricted area 309: A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mid-latitude sailing?
N a. 117.3°T, 503.0 miles N b. 117.9°T, 504.0 miles N c. 118.6°T, 508.0 miles Y d. 119.2°T, 512.0 miles 350: By 0430, the wind has increased, and the visibility cleared due to passage of a front. You estimate 3° leeway due to NW'ly winds. What is the course per gyrocompass to pass 1.2 miles due south of Twenty-eight Foot Shoal Lighted Buoy "TE"?
N a. 090° N b. 086° N c. 083° Y d. 080° 439: At 0337, fog closes in and you anchor under the following radar ranges and bearing:
South tip of Watch Hill Point 3.0 miles
East point of Fishers Island 1.4 miles
Latimer Reef Light 331°T
What is the approximate depth of water at your anchorage?
N a. 135 feet (40.9 meters) N b. 120 feet (36.4 meters) Y c. 100 feet (30.3 meters) N d. 83 feet (25.2 meters) 552: If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?
N a. 0500 N b. 0508 N c. 0514 Y d. You will not sight the light. 577: At 1015, you estimate you have 139 miles to complete the voyage. If you average 9.5 knots, you will complete the voyage in __________.
N a. 14 hours 44 minutes Y b. 14 hours 38 minutes N c. 14 hours 30 minutes N d. 14 hours 22 minutes 620: On 21 May , at 0630 PDT (ZD +7), your vessel takes departure at the San Francisco Sea Buoy, LAT 37°45.0'N, LONG 122°41.5'W, enroute to Kobe, LAT 33°52.0'N, LONG 135°00.0'E via great circle. The distance is 4,245 miles, and you estimate that you will average 14.0 knots. What will be your estimated zone time of arrival?
N a. 0442, 2 June N b. 1342, 2 June N c. 0442, 3 June Y d. 1342, 3 June 1093: On 22 Nov. , your vessel is enroute from Accra, Ghana to Montevideo, Uruguay. You are on course 240°T and making a speed of 15.0 knots. Your 1129 DR position is LAT 28°25.0'S, LONG 42°40.0'W. You observed 3 celestial bodies. Determine the latitude and longitude of your 1137 running fix. NP-0023
Y a. LAT 28°27.0'S, LONG 42°38.0'W N b. LAT 28°25.2'S, LONG 42°40.0'W N c. LAT 28°25.0'S, LONG 42°36.0'W N d. LAT 28°23.4'S, LONG 42°42.0'W 1225: You estimate the current at 2.0 mph. What is the speed over the ground?
N a. 9.5 mph Y b. 5.5 mph N c. 5.0 mph N d. 4.5 mph 1250: What facility is not found near La Grange Towhead Light (538.2 AHP) on Greenville Harbour?
N a. Mississippi Limestone N b. Ergon, Inc. N c. American Commercial Barge Lines Y d. Greenville Casino Wharf 1339: At 1300, 5 January, the river will be temporarily closed to navigation for six hours at mile 531.3 AHP due to repairs to a bridge. What minimum speed over the ground must you make from Natchez Gage in order not to be delayed?
N a. 5.7 mph Y b. 6.0 mph N c. 6.8 mph N d. 7.3 mph 1726: The highest point on your towboat is 57 feet above water. The Natchez Gage (mile 363.3 AHP) reads 16.7 feet. What is the vertical clearance when you pass under the Natchez - Vidalia (westbound) Hwy. Bridge?
Y a. 52.3 feet N b. 59.9 feet N c. 61.0 feet N d. 68.6 feet 1780: At 1523 ZT, on 14 June , in DR position LAT 31°58'S, LONG 48°42'W you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 118.0°psc. The variation is 10°W. What is the deviation?
N a. 2.5°W Y b. 2.1°W N c. 1.7°W N d. 1.7°E 1859: On 22 March , your 0519 ZT DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 094°T, at an observed altitude (Ho) of 30°15.0'. The chronometer reads 10h 16m 47s and is 02m 15s slow. What star did you observe?
N a. Acamar Y b. Enif N c. Menkar N d. Rigel 1955: At 1814, on 11 September, 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?
Y a. 8.7 mph N b. 7.7 mph N c. 6.3 mph N d. 5.6 mph 2022: On 24 August , your vessel is enroute from Perth, Australia, to Bombay, India. Evening twilight will occur at 1807 zone time, and your vessel's DR position for this time will be LAT 27°17.0'S, LONG 83°17.0'E. Considering their magnitude and location, what are the three stars best suited to observe for a fix at star time?
N a. Arcturus, Antares, Atria Y b. Spica, Altair, Acrux N c. Pollux, Canopus, Hamal N d. Rasalhague, Spica, Kochab 2093: At your current speed of 21 knots you only have enough fuel remaining to travel 435 miles. You must travel 755 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
Y a. 15.9 N b. 17.1 N c. 18.3 N d. 19.5 2155: On 17 May , at 0501 zone time, morning stars were observed, and the vessel's position was determined to be LAT 22°16.0'S, LONG 103°46.0'W. Your vessel is steaming at 24.0 knots on a course of 301°T. A sextant observation of the Sun's lower limb is made at 0845 zone time. The chronometer reads 03h 43m 32s, and the sextant altitude is 28°24.7'. The index error is 1.5' off the arc, and the chronometer error is 02m 02s slow. Your height of eye on the bridge is 85.5 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 051.0°T Y b. 052.5°T N c. 054.2°T N d. 055.7°T 2165: On 25 February , at 0622 ZT, you observe the upper limb of the Moon with a sextant altitude of 59°58.6'. Your DR position is LAT 30°28.3'S, LONG 102°39.3 E. The chronometer reading at the time of the sight is 11h 21m 18s and the chronometer is 48s slow. The height of eye is 59 feet and the index error is 2.5' on the arc. What are the azimuth (Zn) and intercept (a) of this sight using the assumed position?
Y a. Zn 305.4°, a 4.2°T N b. Zn 234.6°, a 4.2° A N c. Zn 305.4°, a 1.5°T N d. Zn 305.4°, a 9.2°T 2209: The Helena Gage reads 9.4 feet. The high point on your towboat is 42 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 53.0 feet N b. 62.6 feet N c. 64.2 feet Y d. 68.0 feet 2242: At 1620 ZT, on 10 September , in DR position LAT 34° 03.8' N, LONG 050° 28.4' W, you observe an amplitude of the Moon. The Moon’s upper limb is observed on the visible horizon and bears 110.2° psc. The variation is 2° E. What is the deviation?
N a. 2.0°E N b. 2.0°W Y c. 1.2°E N d. 1.2°W 2326: The Coast Guard announces that Chesapeake Channel is closed indefinitely due to a collision in the channel between Trestle "B" and "C" of the Chesapeake Bay Bridge and Tunnel. You exit York Spit Channel, leaving buoy "22"
close abeam to port at 0.1 mile, and alter course to leave Horseshoe Crossing Lighted Bell Buoy "HC" abeam to port at 0.2 mile. What is the course per gyrocompass?
Y a. 185°pgc N b. 188°pgc N c. 191°pgc N d. 194°pgc 2658: You are steering 202°T, and a light is picked up dead ahead at a distance of 14.6 miles at 2234. You change course to pass the light 5 miles off abeam to starboard. If you are making 21 knots, what is your ETA at the position 5 miles off the light?
N a. 2310 Y b. 2313 N c. 2316 N d. 2319 2884: Your vessel is steering 238°T at 11 knots. At 2304 a light bears 176°T, and at 2323 the same light bears 155°T. What will be your distance off abeam?
N a. 7.5 miles N b. 8.0 miles Y c. 8.5 miles N d. 9.0 miles 2906: You are steaming on a course of 211°T at 17 knots. At 0417 a light bears 184°T, and at 0428 the same light bears 168°T. What is the distance off the light at 0428?
N a. 3.4 miles N b. 4.6 miles Y c. 5.1 miles N d. 5.6 miles 3097: If the pitch of the propeller is 19.4 feet, and the revolutions per day are 96,713, calculate the day's run allowing 6% positive slip.
N a. 266.4 miles Y b. 290.1 miles N c. 308.6 miles N d. 327.1 miles 3101: You are turning 100 RPM, with a propeller pitch of 25 feet, and an estimated slip of -5%. What is the speed of advance?
N a. 24.7 knots N b. 23.5 knots Y c. 25.9 knots N d. 22.3 knots 3276: While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?
Y a. 175 bbls/day N b. 215 bbls/day N c. 277 bbls/day N d. 300 bbls/day 3626: Your vessel is steering course 284°psc, variation for the area is 6°W, and deviation is 3°E. The wind is from the north-northeast, producing a 3° leeway. What true course are you making good?
N a. 275°T Y b. 278°T N c. 284°T N d. 290°T 10201: Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming that there are no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position 0.5 mile due south of New Haven Lighted whistle Buoy NH?
N a. 315.5°psc Y b. 310.5°psc N c. 290.5°psc N d. 284.5°psc 11001: What time will high water occur at Saybrook Jetty on the morning of 29 October 1983?
N a. 0145 N b. 0255 Y c. 0405 N d. 0920 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 11909: Your position is 3 miles due east of Montauk Point Light. What is the true course to steer to arrive one mile due south of Block Island Southeast Point Light, if you are turning for 6.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
N a. 081°T Y b. 084°T N c. 087°T N d. 090°T 12109: You sight Tue Marshes Light (LAT 37°14.1'N, LONG 76°23.2'W) in line with Goodwin Thorofare Light "16" (LAT 37°13.7'N, LONG 76°25.0'W) dead ahead bearing 264° per standard magnetic compass. Which statement is TRUE?
Y a. The compass error is 11°W. N b. The deviation table must be corrected for the change in date. N c. The deviation is 1°W for a bearing of 264° only. N d. The variation is 9°W for a bearing of 264° only. 12201: Your vessel is steady on a heading of 203° per standard magnetic compass when you sight New Haven Light and New Haven Outer Channel Range Front Light in line over the stern. This information indicates that the __________.
N a. existing deviation table is correct for this heading N b. compass error is 17°W Y c. deviation table is in error for this heading N d. deviation is 1°E 13302: The shoal spanned by Trestle B of the Chesapeake Bay Bridge and Tunnel is __________.
N a. Chesapeake shoal N b. the Middle ground N c. Lynnhaven roads Y d. the Tail of the Horseshoe 13509: Sounding contours in unshaded water areas are at what interval?
N a. 10 foot up to 100 ft depths then at 30 foot intervals Y b. 30 foot intervals N c. 10 fathom intervals N d. The interval will vary to ensure any major underwater hazard is highlighted. 13806: The chart symbol surrounding Saybrook Breakwater Light warns mariners that the navigational light structure is __________.
N a. no longer maintained Y b. protected by riprap N c. privately maintained N d. awash at high tide 15211: You have just passed York River Entrance Channel Lighted Buoys "13" and "14". The chart shows a light approximately 1.0 mile off your port beam with a light characteristic "Fl 6 sec". What is the name of this light?
N a. Mobjack Bay Entrance Light N b. New Point Comfort Shoal Light Y c. York Spit Light N d. York River Entrance Channel Light "1" 15312: You arrive at the rendezvous point, secure the tow, and head back southward. At 1200, you take the following bearings:
Cape Charles Light bearing 240.5° true
Sand Shoal Inlet South Light bearing 289° true
What is your 1200 position?
N a. LAT 37°10.5'N, LONG 75°33.0'W N b. LAT 37°12.0'N, LONG 75°35.0'W Y c. LAT 37°15.0'N, LONG 75°37.5'W N d. LAT 37°19.0'N, LONG 75°40.5'W 15314: Your gyro and electronic gear are again operating. At 1710, Chesapeake Light bears 137°pgc at 6.6 miles. The current is setting 160°T at 2 knots. At your speed of 6 knots, what is your true course to steer to remain in the inbound traffic lane?
Y a. 269° N b. 265° N c. 261° N d. 250° 15356: You are on course 092°T, and the engines are turning for 8 knots. At 0452, you take the following bearings:
Stratford Point Light 020°pgc
Stratford Shoal (Middle Ground) Light 141°pgc
What is your 0452 position?
N a. LAT 41°05.4'N, LONG 73°07.7'W Y b. LAT 41°05.2'N, LONG 73°07.8'W N c. LAT 41°05.2'N, LONG 73°07.5'W N d. LAT 41°05.1'N, LONG 73°07.7'W 15766: From your 0745 fix, you change course to pass 1.0 mile south of buoy "WH" and estimate your speed at 7 knots. If the visibility clears, what is the earliest time you can expect to see Block Island North Light tower?
N a. The tower is in sight at 0745. N b. 0750 Y c. 0806 N d. 0838 15769: At 0900, you take the following radar ranges:
Watch Hill Point 5.4 miles
Block Island Grace Point 8.3 miles
Which statement is TRUE?
N a. You are to the right of the track line. N b. The bottom in the area is sand and gravel. N c. You are inside of the Territorial Sea. Y d. The fix is indeterminate. 15916: If you correct for the current in the preceding question (215°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 N b. 1021 Y c. 1026 N d. 1030 16741: At 2346 Montauk Point Light bears 285°pgc, and the radar range to Montauk Point is 5.9 miles. You are steering to make good 034°T. In order to remain westward of Southwest Ledge you should __________.
Y a. come left when South East Point Light bears 057° true N b. remain on your present course and you will clear Southwest Ledge N c. keep Block Island North Light bearing 033°T or less N d. alter course to the right when Block Island Aerobeacon bears 055°T