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 36: You pass Springfield Bend Lt. (mile 244.8 AHP) at 1242, on 17 October, and estimate the current will average 2.5 mph for the remainder of your trip. What is your ETA at the mouth of the Ohio River if you are making turns for 10.5 mph?
N a. 1905, 19 October N b. 2122, 19 October N c. 0232, 21 October Y d. 0519, 21 October 124: 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 Y c. 1757 on 16 May N d. 2236 on 16 May 149: Your engines are turning for 8.2 mph. You estimate the current at 1.5 mph. What is your speed over the ground?
Y a. 9.7 mph N b. 8.8 mph N c. 8.2 mph N d. 6.7 mph 163: Which light will you be passing at 0059, on 22 September, if you make good 9.2 mph?
N a. Kate Aubrey Lt. Y b. Obion Bar Lt. N c. Trotter Lt. N d. Quaker Oats Lt. 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) 230: At 2123, your position is LAT 37°20.0'N, LONG 76°03.0'W. What is your distance offshore of Savage Neck?
Y a. 1.7 miles N b. 2.6 miles N c. 3.4 miles N d. 4.6 miles 321: At 2200, you are in position LAT 36°57.5'N, LONG 76°02.5'W. You intend to travel up the Thimble Shoals auxiliary Channel to Hampton Roads. According to the Coast Pilot, what is the depth of the auxiliary channel on either side of the main channel?
N a. 45 feet (13.7 meters) N b. 36 feet (11.0 meters) Y c. 32 feet (9.8 meters) N d. 28 feet (8.5 meters) 376: You depart LAT 40°42.0'N, LONG 74°01.0'W, and steam 3365.6 miles on course 118°T. What is the longitude of your arrival by Mercator sailing?
N a. 24°29.0'W N b. 22°58.0'W Y c. 17°41.0'W N d. 10°46.0'W 390: A vessel at LAT 29°38.0'N, LONG 93°49.0'W, heads for a destination at LAT 24°38.0'N, LONG 82°55.2'W. Determine the true course and distance by Mercator sailing.
N a. 115°T, 637 miles Y b. 117°T, 658 miles N c. 122°T, 648 miles N d. 126°T, 665 miles 457: Determine the great circle distance and initial course from LAT 31°57.0'S, LONG 115°52.0'E to LAT 24°47.0'N, LONG 66°59.0'E.
N a. 4516 miles, 134.5°T Y b. 4407 miles, 314.5°T N c. 4402 miles, 319.5°T N d. 4378 miles, 336.8°T 489: At 0728, Race Rock Light is bearing 282°T at 3.8 miles, and the closest point on Fishers Island is at a radar range of 2.1 miles. What speed have you been making since you changed course at 0705?
N a. 11.4 knots N b. 10.6 knots Y c. 9.9 knots N d. 9.2 knots 566: Your cargo vessel is berthed near Lamberts Point in Norfolk. You are on a voyage to Baltimore, Maryland. Which larger scale chart should you use to show the area from Lamberts Point to Hampton Roads?
N a. 12224 N b. 12241 Y c. 12245 N d. 12256 578: At 1008, you are entering York Spit Channel and buoy "19" is abeam to your starboard. What speed are you making good?
N a. 9.9 knots N b. 9.7 knots Y c. 9.0 knots N d. 8.4 knots 638: 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 653: On which voyage would a great circle track be significantly shorter than a rhumb line track? (Use gnomonic tracking chart WOXZC 5274)
Y a. Savannah, GA, to Lisbon, Portugal N b. Dublin, Ireland (Irish Sea), to La Coruna, Spain (LAT 43°22'N, LONG 8°24'W) N c. Reykjavik, Iceland, to Lisbon, Portugal N d. Boston to Sable Island 746: On 16 January , at 1804 zone time, you take a sextant observation of Polaris. Your vessel's DR position is LAT 36°12'N, LONG 124°36'W, and your sextant reads (hs) 37°16.4'. Your chronometer reads 02h 02m 12s, and is 01m 36s slow. Your height of eye is 60 feet, and the index error is 1.5' on the arc. From your observation of Polaris, what is the latitude of your vessel?
N a. 36°12.6'N N b. 36°14.4'N Y c. 36°17.9'N N d. 36°20.2'N 830: On 23 August , in DR position LAT 24°22.0'S, LONG 64°55.3'E, you take an ex-meridian observation of the Moon's upper limb at upper transit. The chronometer time of the sight is 02h 15m 04s, and the chronometer error is 01m 06s fast. The sextant altitude (hs) is 48°03.6'. The index error is 2.0' on the arc, and your height of eye is 60 feet (21.0 meters). What is the latitude at meridian transit?
Y a. 24°20.5'S N b. 24°22.8'S N c. 24°24.8'S N d. 24°49.5'S 844: On 12 September , your 0600 zone time (ZT) fix gives you a position of LAT 22°51.9'N, LONG 133°40.1'W. Your vessel is on course 062°T, and your speed is 12.3 knots. Local apparent noon (LAN) occurs at 1142 ZT, at which time a meridian altitude of the Sun's upper limb is observed. The observed altitude (Ho) for this sight is 70°33.2'. What is the calculated latitude at LAN?
N a. 23°23.0'N Y b. 23°24.8'N N c. 23°26.5'N N d. 23°27.9'N 1076: On 25 Mar , your 0500 ZT DR position is LAT 28°14.0'S, LONG 93°17.0'E. You are on course 291°T at a speed of 16.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0550 running fix. NP-0006
Y a. LAT 28°15.9'S, LONG 92°56.9'E N b. LAT 28°19.3'S, LONG 92°59.0'E N c. LAT 28°06.4'S, LONG 93°02.5'E N d. LAT 27°53.2'S, LONG 93°17.6'E 1131: At 1923, you increase speed to make good 9.2 mph. What is the first Gage you will pass after your speed change?
N a. Cottonwood Point Y b. Caruthersville N c. Fulton N d. New Madrid 1166: At 1032 on 24 June, you pass Carolina Landing Light(mile 508.8 AHP). What has been the average current since 2350, 23 June, if you have been making turns for 9.0 mph?
N a. 8.5 mph N b. 5.7 mph N c. 1.5 mph Y d. 0.5 mph 1232: The Vaucluse Trench fill revetment on the LMR extends from mile __________.
N a. 524.3 - 522.6 RDB Y b. 535.6 - 532.9 RDB N c. 535.9 - 534.3 LDB N d. 534.3 - 532.6 LDB 1276: Your 0000 zone time position on 13 June is LAT 24°35'N, LONG 142°26'E. Your vessel is on course 245°T, speed is 13.5 knots. What is the zone time of sunrise?
N a. 0440 Y b. 0445 N c. 0503 N d. 0528 1281: On 2 January , you are on a course of 094°T at a speed of 20 knots. At 0430 ZT, your DR position is LAT 24°12'N, LONG 71°24'W. Determine the zone time of sunrise.
Y a. 0627 N b. 0636 N c. 0644 N d. 0701 1413: You complete changing out your tow and get underway enroute Ark City Tank Storage (mile 554.0 AHP) to deliver the tank barges. What is the distance you must travel from Cairo Point Light?
N a. 202.1 miles Y b. 400.7 miles N c. 554.2 miles N d. 605.8 miles 1485: On 6 October , your 0416 zone time DR position is LAT 25°16.0'N, LONG 130°25.0'E. At that time, you observe Mars bearing 083°psc. The chronometer reads 07h 16m 22s, and the chronometer error is 00m 10s fast. The variation is 1.5°E. What is the deviation of the standard compass?
N a. 0.4°E Y b. 1.2°W N c. 3.5°E N d. 19.0°E 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 1542: You are turning for 6.8 mph and estimate the current at 1.0 mph. What is your speed over the ground?
N a. 6.8 mph Y b. 7.8 mph N c. 8.8 mph N d. 9.4 mph 1706: The highest point on your towboat is 53 feet above the water, and the Helena Gage (mile 663 AHP) reads 3.9 feet. What is the vertical clearance when you pass under the B-span of the Helena Highway Bridge in Helena?
N a. 59.9 feet Y b. 62.5 feet N c. 64.1 feet N d. 65.5 feet 1899: On 22 May , your 0437 DR position is LAT 25°18.5'N, LONG 51°18.0'W. You observe an unidentified star bearing 116°T at an observed altitude (Ho) of 11°27.8'. The chronometer reads 07h 40m 40s, and is 03m 24s fast. What star did you observe?
N a. Markab Y b. Diphda N c. Sabik N d. Hamal 2533: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. List of Buoys and Daymarks N b. Coast Pilot N c. Army Corps. of Engineers Navigation Chart Y d. U.S.C.G. Local Notice to Mariners 2900: You are steaming on a course of 167°T at 19.5 knots. At 1837 you observe a lighthouse bearing 224°T. At 1904 the lighthouse bears 268°T. What is your distance off at the second bearing?
N a. 8.8 miles N b. 9.5 miles Y c. 10.4 miles N d. 11.3 miles 3073: If the speed necessary for reaching port at a designated time is 16.8 knots and the pitch of the propeller is 22.3 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip?
N a. 61 N b. 66 Y c. 73 N d. 80 3632: You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 145°psc N b. 147°psc N c. 150°psc Y d. 153°psc 3648: The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good?
N a. 305°pgc Y b. 311°pgc N c. 315°pgc N d. 318°pgc 3755: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 186°T, and the variation is 11°W. If the heading of your vessel at the time of the sighting is 193° per standard magnetic compass, what is the correct deviation?
Y a. 4°E N b. 4°W N c. 7°E N d. 7°W 11908: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 117°T N b. 112°T N c. 104°T N d. 102°T 12303: You are on course 056° per standard magnetic compass when you sight Block Island North Light in line with the Block Island Aero Beacon bearing 193° per standard magnetic compass. Based on this you __________.
N a. know the compass error is 4°E N b. should swing your vessel to check for deviation Y c. know the deviation table is correct for that heading N d. should use 3°W deviation on bearings of 193°psc 13007: Your 1600 position is LAT 41°08.0'N, LONG 72°44.8'W. You are making turns for 10 knots. What is your ETA at Twenty-Eight Foot Shoal Lighted Buoy "TE" (LAT 41°09.3'N LONG 72°30.5'W)?
N a. 1647 N b. 1651 N c. 1702 Y d. 1706 13101: At 1523 your position is LAT 41°08.2'N, LONG 71°34.4'W. You are turning for 8.7 knots. What is your ETA at Shagwong Reef Buoy "7SR"?
N a. 1653 N b. 1700 Y c. 1711 N d. 1718 15008: At 1920, the buoy forward of your starboard beam is __________.
N a. an interrupted quick flashing buoy N b. Hog Island Lighted Bell Buoy N c. South Light Buoy Y d. Sand Shoal Inlet Lighted Buoy "A" 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 15012: At 2020, you obtain a fix using the following information:
9960-X-27112
9960-Y-41432
Cape Charles Lighted Bell Buoy "14" bears 333°pgc. Your longitude is __________.
N a. 75°38.9'W N b. 75°39.1'W N c. 75°39.3'W Y d. 75°40.5'W 15165: At 2000, your position is LAT 37°04.1'N, LONG 76°05.6'W. You change course for the Eastern Shore. At 2037, Old Plantation Flats Light bears 033°pgc, and York Spit Light bears 282°pgc. The course made good from your 2000 position was __________.
Y a. 006°T N b. 014°T N c. 020°T N d. 028°T 15209: At 1800, Tue Marshes Light bears 264.5°pgc, York Spit Swash Channel Light "3" bears 007°pgc. Your position is __________.
N a. LAT 37°15.5'N, LONG 76°19.8'W N b. LAT 37°15.2'N, LONG 76°20.3'W N c. LAT 37°15.0'N, LONG 76°20.0'W Y d. LAT 37°14.5'N, LONG 76°20.1'W 15508: From your position you observe a rotating white and green light to the north. This light is most likely __________.
N a. from a submarine on the surface N b. the light at Southeast Point Y c. at an airport N d. on a coastal patrol vessel 15511: From your 1830 fix, you come left to a course of 290°T.
Which of the following statements concerning Watch Hill Light is FALSE?
N a. The nominal range of its white light is 15 miles. N b. It displays both red and white lights. N c. Its horn blasts every 30 seconds in fog. Y d. Its geographic range is 18.5 miles at a 35 foot (10.7 meter) height of eye. 15960: From your 1752 position, you steer 313°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light - 238°pgc.
Chesapeake Bay Tunnel North Light - 136°pgc.
What are the latitude and longitude of your 1805 position?
Y a. LAT 37°05.9'N, LONG 76°08.0'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.0'N, LONG 76°08.7'W N d. LAT 37°06.1'N, LONG 76°08.1'W 16061: 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 Y b. York Spit Light N c. New Point Comfort Light N d. York River Entrance Channel Light "1" 16561: From your 1830 fix, you come left to a course of 290°T.
Which statement concerning Watch Hill Light is TRUE?
N a. The nominal range of its white light is 16 miles. Y b. It displays both red and white lights. N c. Its horn blasts every 15 seconds in fog. N d. Its geographic range is 18.5 miles at a 35-foot (10.7 meters) height of eye.