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.
86: As you approach Shreves cut-off you see Red River Landing Gage (mile 302.4 AHP) which reads 6.2 feet. Which of the following statements is TRUE?
N a. This reading is 6.2 feet above the Low Water Reference Plane. Y b. This reading is at the same elevation as the 6.2 ft. mark on the Gage at Head of Passes. N c. The depth of water at Red River Landing is 6.2 ft. N d. A vessel drawing 7 ft. would be able to pass through the locks at Lower Old River. 228: Your height of eye is 25 feet (7.6 meters). If the visibility is 5.5 nautical miles, what is the luminous range of Wolf Trap Light?
N a. 17.0 miles N b. 16.0 miles N c. 12.0 miles Y d. 7.5 miles 237: At 0845, you are on a course of 097°T, and Townshend Ledge Buoy "10A" is close abeam to port. With a westerly current of 1.2 knots, what speed will you have to turn for from your 0845 position in order to arrive abeam of Six Mile Reef Buoy "8C" at 1030?
N a. 12.1 knots Y b. 10.9 knots N c. 9.7 knots N d. 8.5 knots 332: You arrive at the rendezvous point, secure the tow, and head back southward. At 1200, you take the following bearings:
Sand Shoal Inlet South Light bearing 289° pgc
Cape Charles Light bearing 240° pgc
What is your 1200 position?
Y a. LAT 37°15.0'N, LONG 75°37.5'W N b. LAT 37°16.0'N, LONG 75°38.0'W N c. LAT 37°17.0'N, LONG 75°39.5'W N d. LAT 37°19.0'N, LONG 75°40.5'W 462: Determine the great circle distance and initial course from LAT 12°45.2'N, LONG 124°20.1'E to LAT 33°48.8'N, LONG 120°07.0'W.
Y a. 6185.9 miles, 050.3°T N b. 6231.3 miles, 309.7°T N c. 6248.0 miles, 048.3°T N d. 6382.0 miles, 311.7°T 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 683: Which type of daymark would you see on the Belle Island Corner Lt. at mile 458.6 AHP?
N a. Green - Diamond N b. Green - Square N c. Red - Triangle Y d. Red - Diamond 744: On 22 May , at 0440 ZT, your vessel's DR position is LAT 23°24'N, LONG 110°24'W. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 23°40.9' with an index error of 1.6' on the arc. Your chronometer reads 11h 42m 14s, and is 2m 36s fast. What is your latitude by Polaris, given a height of eye of 24 feet?
N a. 23°28.6'N N b. 23°30.0'N Y c. 23°31.2'N N d. 23°32.8'N 1080: On 20 Feb. , your 0530 ZT DR position is LAT 24°15.0'N, LONG 137°33.0'W. You are on course 033°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0010
N a. LAT 24°23.3'N, LONG 137°35.5'W N b. LAT 24°26.0'N, LONG 137°25.8'W Y c. LAT 24°27.5'N, LONG 137°31.8'W N d. LAT 24°30.1'N, LONG 137°24.5'W 1097: On 9 November , your 0400 DR position is LAT 18°24.0'S, LONG 97°36.0'W. You are on course 138°T at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0027
N a. LAT 18°15.0'S, LONG 98°52.5'W Y b. LAT 18°45.0'S, LONG 97°06.8'W N c. LAT 18°52.5'S, LONG 97°10.6'W N d. LAT 19°15.5'S, LONG 98°08.8'W 1259: On 10 April , your 1630 ZT DR position is LAT 21°03.0'N, LONG 63°11.0'W. You are on course 324°T at a speed of 22 knots. What will be the zone time of sunset at your vessel?
N a. 1805 N b. 1814 N c. 1818 Y d. 1833 1294: What are the light characteristics of Greenwood Light (mile 288.6 AHP)?
N a. Fixed red light Y b. 2 red flashes every 5 seconds N c. 1 red flash every 4 seconds N d. 2 white flashes every 4 seconds 1300: 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 1750: In addition to the Army Corps. of Engineers maps, data on bridge clearances may be found in the __________.
N a. Army Corps. of Engineers Regulations Y b. Light List N c. Waterways Journal N d. Channel Report 1906: On 22 March , your 0519 DR position is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing 051°T at an observed altitude (Ho) of 50°03.7'. The chronometer reads 10h 16m 47s, and is 02m 15s slow. What star did you observe?
N a. Acamar N b. Enif N c. Menkar Y d. Deneb 1953: You are downbound when you observe on your Mississippi River map a circel with black and white quadrants on the left bank. This indicates a __________.
Y a. river gage N b. daymark N c. control tower N d. information board 1956: 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 2007: On 4 September , your 1813 zone time DR position is LAT 24°18.0'S, LONG 95°16.0'E. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
N a. Enif, Miaplacidus, Alkaid N b. Betelgeuse, Acrux, Hamal Y c. Rasalhague, Fomalhaut, Spica N d. Deneb, Altair, Vega 2094: At your current speed of 20 knots you only have enough fuel remaining to travel 218 miles. You must travel 395 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 17.4 N b. 16.2 Y c. 14.9 N d. 13.7 2202: After entering Milliken Bend (mile 455 AHP) you wish to locate the river service in Madison Parish, Louisiana. The river service is indicated by the square containing which number?
N a. 5 Y b. 4 N c. 3 N d. 2 2584: At 1930 you obtain two radar ranges: Hammonasset Point at 4.1 miles and the East side of Falkner Island at 7.6 miles. What is your position?
N a. LAT 41°11.2'N, LONG 072°30.6'W Y b. LAT 41°11.7'N, LONG 072°29.2'W N c. LAT 41°11.8'N, LONG 072°29.6'W N d. LAT 41°11.9'N, LONG 072°29.2'W 2711: Which light characteristics does Foster Light have?
N a. 1 green flash every 4 seconds N b. 1 red flash every 4 seconds Y c. 2 white flashes every 5 seconds N d. 2 red flashes every 5 seconds 2788: The solid lines extending into the channel at mile 948 AHP are __________.
Y a. dikes N b. revetments N c. spoil areas N d. Meadwestvaco pipeline 2871: Your vessel is on a course of 052°T at 16 knots. At 0916 a light bears 078.5°T, and at 0927 the light bears 097°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0929, 2.0 miles N b. 0932, 2.3 miles N c. 0935, 2.6 miles Y d. 0938, 2.9 miles 2898: You are steaming on a course of 267°T at 22 knots. At 0433 you observe a lighthouse bearing 290°T. At 0452 the lighthouse bears 328°T. What is your distance off at the second bearing?
Y a. 4.5 nm N b. 5.9 nm N c. 6.6 nm N d. 7.2 nm 3638: You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Y a. 003°psc N b. 005°psc N c. 007°psc N d. 009°psc 4011: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic compass heading of 234°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
N a. 2.5°W N b. 2.5°E N c. 1.0°W Y d. 0.5°E 10206: Your 2230 position is LAT 41°07.4'N, LONG 72°44.0'W. Assuming that there are no set and drift, what course must you steer per standard magnetic compass (psc) to leave Twenty-Eight Foot Shoal Lighted Buoy (LAT 41°09.3'N, LONG 72°30.4'W) 1 mile abeam to port?
N a. 084°psc N b. 091°psc N c. 094°psc Y d. 098°psc 10501: At 0939 your GPS position is LAT 36°57.0'N, LONG 75°41.0'W. You are on course 119° per standard magnetic compass at a speed of 12.8 knots. At 1017 your GPS indicates your position as LAT 36°54.2'N, LONG 75°33.1'W. What were the set and drift?
N a. 280°T at 1.0 knot Y b. 275°T at 1.8 knots N c. 091°T at 1.6 knots N d. 103°T at 1.1 knots 10505: 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 1000 your position is LAT 36°59.5'N, LONG 75°37.0'W. What was the current?
N a. 137° at 0.6 knot Y b. 150° at 1.0 knot N c. 331° at 0.7 knot N d. 347° at 0.7 knot 11105: What is the height of the tide at Great Salt Pond on Block Island at the afternoon high water (daylight savings time) on 1 July 1983?
N a. 3.9 feet N b. 3.0 feet N c. 2.4 feet Y d. 2.1 feet 11807: What course should you steer by your standard magnetic compass (psc) between Horton Pt. Light and a position 2 miles due south of Branford Reef Light, if the set and drift of the current are 111°T at 2.5 knots, and a southwesterly wind will cause 4° of leeway? (Your engines are turning for 18 knots.)
N a. 306°psc Y b. 301°psc N c. 295°psc N d. 275°psc 12501: You are on course 056° per standard magnetic compass when you take the following bearings: Cape Henry Light 262°psc Cape Charles Light 344°psc Chesapeake Light 125°psc What is your position?
N a. LAT 36°58.4'N, LONG 75°49.1'W N b. LAT 36°58.1'N, LONG 75°50.0'W N c. LAT 36°57.8'N, LONG 75°49.2'W Y d. LAT 36°57.6'N, LONG 75°49.8'W 12902: Your 1312 position is LAT 37°10.9'N, LONG 75°29.6'W. You are turning for 8.3 knots. What is your ETA at LAT 37°21.9'N, LONG 75°42.6'W?
N a. 1449 N b. 1456 Y c. 1502 N d. 1511 13307: The soundings on the chart are based on the depth of water available at __________.
N a. mean low water Y b. mean lower low water N c. mean high water N d. mean high water springs 13801: You are operating in the area approximately 2 miles southeast of Kelsey Point when you realize that your vessel's intended track will carry you over the wreck charted at LAT 41°13.5'N, LONG 72°29.6'W. Which statement is TRUE?
N a. The chart indicates the exact position of the wreck. N b. The wreck has been cleared by wire drag to a depth of 39 ft. Y c. The wreck represents a danger to surface navigation. N d. The wreck is visible above the sounding datum. 13909: The irregular black line around a charted light such as Race Rock Light indicates that it is __________.
N a. unwatched Y b. surrounded by riprap N c. a minor light N d. constructed on an artificial island 15267: From your 1210 position, you are making good a course of 083°
T. Your engines are turning RPMs for 10 knots. The set and drift of the current are 310° at 1.7 knots. At what time should you expect to enter the red sector of New London Harbor Light?
Y a. 1243 N b. 1249 N c. 1253 N d. 1301 15357: If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?
N a. The light is visible at 0452. N b. 0458 N c. 0510 Y d. You will not sight the light. 15410: You arrive at Cape Charles City at 1700 and depart at 1800. You are underway in Chesapeake Bay and encounter heavy fog. At 1830, you obtain the following radar readings:
Old Plantation Flats Light @ 1.9 nm
New Point Comfort Light bearing 301° true @ 10.55 nm
What is your 1830 position?
N a. LAT 37°10.3'N, LONG 76°04.5'W N b. LAT 37°10.3'N, LONG 76°06.5'W Y c. LAT 37°12.3'N, LONG 76°04.4'W N d. LAT 37°12.3'N, LONG 76°06.5'W 15562: The two wavy magenta lines running to Green Hill Point represent __________.
N a. recommended approaches to Green Hill Point Y b. submarine cables N c. prohibited fishing areas N d. fish trap areas 15760: As you near Little Gull Island, you use your loran to insure that you do not come within 0.5 mile of the island. Which loran reading will act as a danger line and keep you off Little Gull Island by a minimum of 0.5 mile?
N a. Not more than 9960-W-14735.9 N b. Not more than 9960-X-26149.0 N c. Not less than 9960-X-26140.0 Y d. Not less than 9960-Y-43953.5 15824: You pass Red River Gage at 2015 on 16 April and estimate the current will average 3.5 mph for the remainder of the time on the Mississippi River. What is your ETA at the mouth of the Ohio River if you continue to turn for 10 mph?
N a. 1445, 20 April N b. 1830, 20 April Y c. 0028, 21 April N d. 0821, 21 April 16045: The north shore of Long Island, from Horton Point to Orient Point,
is __________.
Y a. bluff and rocky N b. low and sparsely wooded N c. marked by long sandy beaches at low water N d. marshy and backed with sand dunes 16261: At 0400 you take the following bearings:
Sand Shoal Inlet South Light bearing 299°pgc
Cape Charles Light bearing 242°pgc
What is your 0400 position?
N a. LAT 37°14.2'N, LONG 75°39.2'W Y b. LAT 37°14.4'N, LONG 75°39.3'W N c. LAT 37°14.4'N, LONG 75°39.0'W N d. LAT 37°14.6'N, LONG 75°39.2'W 16263: If you increase speed to 8 knots, and the current is 240°
at 0.7 knot. What course should you steer from your 0400 position to arrive at point A?
N a. 178°T N b. 180°T Y c. 183°T N d. 186°T 16407: 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. 099°psc N b. 102°psc Y c. 105°psc N d. 109°psc 16511: At 0728, you change course to 080°T. When steady on course, the standard magnetic compass reads 097°. Which statement is TRUE?
N a. The gyro course is 083°pgc. N b. The magnetic heading is 090°. N c. The deviation is 1.0°E. Y d. The magnetic compass error is 17°W. 16745: At 0100 Race Rock Light bears 001° relative, and at 0110 it bears 000° relative. Based on this you know you __________.
Y a. are being set to the right of the track N b. are making good more than 9.2 knots N c. are making good less than 9.2 knots N d. have an unknown gyro error