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.
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 117: At 0645, on the 17th of April, you pass Hole in the Wall Lt. (mile 373.4 AHP). What has been your average speed since departing the Exxon Refinery?
N a. 5.8 mph Y b. 6.3 mph N c. 6.7 mph N d. 7.1 mph 142: As you approach West Memphis Lt. (mile 727.4 AHP) you notice on the map a dashed line crossing the river. This line indicates a __________.
N a. submerged oil pipeline N b. submerged gas pipeline N c. aerial tramway Y d. aerial power line 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. 6.7 188: At 2020, what is the course to steer to enter the inbound lane of North Chesapeake Entrance traffic separation scheme if a northwesterly wind causes 3° of leeway?
N a. 227°pgc Y b. 221°pgc N c. 218°pgc N d. 215°pgc 217: Your 1600 position is LAT 37°22.5'N, LONG 75°32.3'W. The depth of water under the keel is about __________.
N a. 59 feet (17.3 meters) N b. 52 feet (15.8 meters) N c. 45 feet (13.6 meters) Y d. 38 feet (11.5 meters) 236: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 3° leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 109°psc N b. 112°psc Y c. 115°psc N d. 118°psc 238: At 0910, your DR position is LAT 41°11.9'N, LONG 72°47.8'W. Your vessel is on course 097°T at 9.5 knots, and the weather is foggy. At 0915, Branford Reef Light is sighted through a break in the fog bearing 318°T. At 0945, Falkner Island Light is sighted bearing 042°T. What is your 0945 running fix position?
N a. LAT 41°11.1'N, LONG 72°41.2'W N b. LAT 41°11.3'N, LONG 72°41.3'W Y c. LAT 41°11.5'N, LONG 72°40.7'W N d. LAT 41°11.8'N, LONG 72°40.2'W 258: During twilight on 28 December , about 1800 GMT, in DR position LAT 4°00'N, LONG 0°06'W, the sextant altitude (hs) of Venus was 30°46.8'. The height of eye was 36 feet, and the index error was 2.0' on the arc. The temperature was 68°F. The barometer read 1030 mb. Calculate the observed altitude (Ho).
N a. Ho 30°35.2' N b. Ho 30°37.1' Y c. Ho 30°38.1' N d. Ho 30°40.3' 371: You are steering 087°pgc and turning for 6.8 knots. At 0600, you take the following bearings:
Little Gull Island Light bearing 089.5° pgc
Bartlett Reef Light bearing 047° pgc
What is your 0600 position?
N a. LAT 41°11.2'N, LONG 72°14.6'W N b. LAT 41°11.7'N, LONG 72°14.4'W Y c. LAT 41°12.1'N, LONG 72°13.8'W N d. LAT 41°12.5'N, LONG 71°14.9'W 455: Determine the great circle distance and initial course from LAT 24°52.0'N, LONG 78°27.0'W to LAT 47°19.0'N, LONG 06°42.0'W.
Y a. 3593 miles, 048.1°T N b. 3457 miles, 053.3°T N c. 3389 miles, 042.4°T N d. 3367 miles, 045.0°T 557: The south shore of Long Island Sound near your position is __________.
N a. high with numerous cliffs Y b. fringed with rock shoals N c. backed by marshes and wooded uplands N d. low and marshy 599: Which town is located at mile 663.5 AHP?
Y a. Helena N b. Friers Point N c. St. Francis N d. Rodney 637: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
N a. 48.0 feet Y b. 53.2 feet N c. 68.2 feet N d. 116.0 feet 1094: On 12 Oct. , your vessel is on course 081°T, speed 20 knots. Your 1800 zone time DR position is LAT 26°11.0'S, LONG 77°18.0'E. You observed 3 celestial bodies. Determine the latitude and longitude of your 1835 running fix. NP-0024
N a. LAT 26°05.5'S, LONG 77°14.5'E N b. LAT 26°07.5'S, LONG 77°34.0'E N c. LAT 26°09.0'S, LONG 77°27.5'E Y d. LAT 26°12.0'S, LONG 77°31.0'E 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 1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)?
Y a. 1145 N b. 1148 N c. 1152 N d. 1156 1231: Which company does NOT have a marine facility along the river bank in Madison Parish (mile 457.0 AHP)?
N a. Complex Chemical Co. N b. Delta Southern Railroads N c. Farm Chemical Y d. Baxter Wilson 1249: What is the white/black within a circle symbol found at mile 592.1 AHP?
N a. Terrence Landing Light N b. Daymark Y c. River Gage N d. Information Board 1304: At 1000, on May 11th, you are passing George Prince Lt. (mile 364.1 AHP) in Natchez, Mississippi and must send an ETA to the Monsanto Terminal in St. Louis (mile 178.0 UMR). Your engines are still turning for 8.5 mph and you estimate the current at 2.5 mph. What will be your arrival time in St. Louis?
N a. 1919 on 15 May N b. 2344 on 15 May N c. 1113 on 16 May Y d. 1757 on 16 May 1365: You estimate the current as 2.5 mph. What is the speed over the ground?
N a. 11.0 mph N b. 8.0 mph Y c. 6.0 mph N d. 5.5 mph 1420: What company does NOT have a marine facility along the river bank in Helena (mile 661 to 665 AHP)?
N a. Helena Port Terminal, Inc. Y b. Riceland Food Corps.. N c. Quincy Soybean Co. N d. Texas Eastern Pipeline Co. 1652: On 16 April , in DR position LAT 28°07.0'N, LONG 81°47.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 073.5°psc. The chronometer reads 10h 53m 41s and is 02m 23s slow. Variation in the area is 11°E. What is the deviation of the magnetic compass?
N a. 4.5°E N b. 4.9°W N c. 6.1°E Y d. 6.5°W 1779: At 2237 ZT, on 14 July , in DR position LAT 33°57'N, LONG 150°32'W you observe an amplitude of Saturn. The planet is about one Sun's diameter above the visible horizon and bears 258.6°psc. The variation is 14°E. What is the deviation?
Y a. 2.0°W N b. 1.0°W N c. 0.0° N d. 1.0°E 1810: You are turning for 9 mph, approaching Fort Adams Lt. (mile 311.4 AHP) and it is reported that the current at Knox Landing is estimated at 4.5 MPH. Which of the following statements is TRUE?
Y a. Tows and other vessels should navigate as close to the left descending bank as safety will permit. N b. The inflow channel is a navigable channel for any vessel. N c. You are making 13.5 mph over the ground. N d. Old River Control Structure Light and Fort Adams Light may be used as range lights when entering the outflow channel. 1924: On 23 September , your 1836 DR position is LAT 25°18'S, LONG 162°23'E. You observe an unidentified star bearing 000°T at an observed altitude (Ho) of 26°18'. The chronometer reads 07h 34m 12s, and is 01m 54s slow. What star did you observe?
N a. Antares N b. Canopus N c. Achernar Y d. Vega 2052: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 2463: You have steamed 491 miles at 20 knots and burning 568 barrels of fuel per day. You must decrease your consumption to 265 barrels per day with 313 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 10.9 N b. 14.3 Y c. 17.1 N d. 18.2 2682: While on a course of 066°pgc, a light bears 18° on the port bow at a distance of 12.3 miles. What course should you steer to leave the light 4 miles abeam to port?
Y a. 067°pgc N b. 072°pgc N c. 079°pgc N d. 085°pgc 2889: While underway you sight a light 11° on your port bow at a distance of 12 miles. Assuming you make good your course, what will be your distance off the light when abeam?
Y a. 2.3 miles N b. 3.1 miles N c. 3.9 miles N d. 4.5 miles 2897: You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?
N a. 8.5 miles Y b. 8.9 miles N c. 9.2 miles N d. 9.7 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 3265: You have steamed 1587 miles at 11.2 knots, and have consumed one-half of your total fuel capacity of 2840 bbls. What is the maximum speed you can steam to complete the remaining 1951 miles?
N a. 9.1 knots N b. 9.9 knots Y c. 10.1 knots N d. 11.6 knots 3468: You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the speed being made good?
N a. 8.5 knots Y b. 10.2 knots N c. 10.9 knots N d. 11.2 knots 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 3654: You are taking a time tick using the 2000 signal from Kekaha-Kauai, Hawaii (WWVH). You hear a series of 1 second dashes followed by a 9 second silent period, then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 07h 59m 54s. When compared to the chronometer, the comparing watch reads 08h 00m 00s, and the chronometer reads 08h 00m 06s. What is the chronometer error?
N a. 0m 06s slow N b. 0m 06s fast N c. 0m 12s fast Y d. No error 10601: At 1645 your GPS position is LAT 41°09.2'N, LONG 72°36.9'W. You are steering course 262° per standard magnetic compass at a speed of 12 knots. At 1721 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 41°07.2'N, LONG 72°44.9'W. What were your set and drift?
N a. 040°T at 0.8 knot Y b. 030°T at 1.7 knots N c. 225°T at 0.9 knot N d. 242°T at 1.1 knots 11307: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2031 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
N a. 8.2 knots N b. 9.3 knots Y c. 10.0 knots N d. 10.9 knots 12305: You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 095° per standard magnetic compass. If your vessel was heading 056° per standard magnetic compass at the time, which of the following is TRUE?
N a. You should subtract 15°Compass error for bearings of 095°. N b. The deviation table is correct for all bearings of 095°. Y c. The vessel should be swung, and the deviation table checked. N d. The compass error is 19°W for all headings. 13309: What type of bottom can be expected at the northern end of York Spit Channel?
N a. Hard clay N b. Fine gray sand N c. Soft black mud Y d. Mud and sand 15010: At 1950, your position is LAT 37°12.3'N, LONG 75°38.6'W. The set and drift from 1930 to 1950 were __________.
N a. 150°T at 0.6 knot Y b. 150°T at 1.6 knots N c. 330°T at 0.6 knot N d. 330°T at 1.6 knots 15167: Your height of eye is 25 feet (7.6 meters). If the visibility is 11 nautical miles, what is the luminous range of Wolf Trap Light?
N a. 8.2 miles Y b. 12.0 miles N c. 16.0 miles N d. 17.0 miles 15262: At 0910, your DR position is LAT 41°11.9'N, LONG 72°47.8'W. Your vessel is on course 097°T at 9.5 knots, and the weather is foggy. At 0915, Branford Reef Light is sighted through a break in the fog bearing 318°T. At 0945,
Falkner Island Light is sighted bearing 042°T. What is your 0945 running fix position?
N a. LAT 41°11.3'N, LONG 72°41.2'W N b. LAT 41°11.3'N, LONG 72°41.0'W Y c. LAT 41°11.5'N, LONG 72°40.7'W N d. LAT 41°11.6'N, LONG 72°41.0'W 15266: At 1210, you are in position LAT 41°14.3'N, LONG 72°16.5'W. What is the charted depth of water?
N a. 97 feet (29.4 meters) Y b. 108 feet (32.7 meters) N c. 119 feet (36.1 meters) N d. 125 feet (37.9 meters) 15438: At 2038 you are on course 272°T when Chesapeake Light is bearing 348° true at a range of 5.3 nm
Based on this fix, which statement is TRUE?
Y a. You are inside a ten fathom depth curve. N b. You are less than five miles from Chesapeake Light. N c. You are 0.6 mile north of a wreck. N d. You are inside the contiguous zone. 15440: Your ETA at Chesapeake Bay Bridge and Tunnel between trestles B + C is 2300. If your engine speed is 9.8 knots,
what will be your approximate speed over the ground, at that time, allowing for the predicted current?
N a. 7.0 knots N b. 8.2 knots N c. 11.4 knots Y d. 12.5 knots 15470: At 1119, Wolf Trap Light bears 268°T at 4.4 miles by radar. What were the set and drift since your 1037 fix?
N a. 178°, 0.5 knot N b. 358°, 0.5 knot N c. 178°, 0.7 knot Y d. 358°, 0.7 knot 15663: At 0748, you change course to 160°T. Which loran reading will insure you clear Great Eastern Rock?
Y a. Nothing more than 9960-W-14645 N b. Nothing more than 9960-X-25970 N c. Nothing more than 9960-Y-43850 N d. Nothing more than 9960-Y-43960 15670: Which chart should you use to enter Great Salt Pond?
N a. 13204 N b. 13205 N c. 13207 Y d. 13217 15707: At 0725, you are heading 054°T, and Stratford Point Light is abeam to port at 3.1 miles. The current is 135°T at 1.8 knots. If you make turns for an engine speed of 8 knots, which course must you steer to make good 048°T?
Y a. 035°T N b. 042°T N c. 047°T N d. 055°T 15764: From your 0715 position, you set a course of 085°T. At 0745, you take the following bearings:
Race Rock Light 274°pgc
Watch Hill Point Light 045°pgc
Fisher's Island East Harbor Cupola 006°pgc
What was the current encountered between 0715 and 0745?
N a. Set 030°T, drift 0.4 knot Y b. Set 070°T, drift 0.7 knot N c. Set 210°T, drift 0.8 knot N d. Set 238°T, drift 1.0 knot 16245: At 2259 Cape Henry Light bears 250°T, Chesapeake Light bears 122°T, and North Chesapeake Entrance Lighted Whistle Buoy "NCA" has a radar range of 1.8 miles. Which statement is TRUE?
N a. The course made good is 226°T. N b. You are in the red sector of Cape Henry Light. N c. You are in a submerged submarine transit lane. Y d. Chesapeake Light is 7.6 miles off. 16465: At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6'
W. Course is 250°T. At 0605, Cape Henry Light bears 249°
T. At 0610, it bears 248°T. At 0625, it bears 247°T. Based on this, you know you are __________.
N a. meeting a current from dead ahead N b. running with a current from dead ahead Y c. being set to the north N d. being set to the south