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.
42: What is the distance from Greenville, MS, to St. Louis, MO, on the Mississippi River System?
N a. 832 miles N b. 733 miles Y c. 597 miles N d. 566 miles 53: What are the dimensions of Old River Lock, on the Lower Mississippi River?
Y a. 1190 feet x 75 feet N b. 1045 feet x 75 feet N c. 760 feet x 75 feet N d. 425 feet x 75 feet 164: 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. 64.2 feet Y c. 68.0 feet N d. 110.0 feet 167: The Arkansas City Yellow Bend revetment on the LMR extends from mile __________.
Y a. 555.5-549.7 RDB N b. 549.0-548.5 RDB N c. 556.9-554.9 LDB N d. 548.5-546.5 LDB 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) 278: The National Weather Service provides 24 hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel area on which frequency?
Y a. 162.55 MHz N b. 162.85 MHz N c. 181.15 MHz N d. 202.35 MHz 420: 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"?
Y a. 096°pgc N b. 094°pgc N c. 091°pgc N d. 089°pgc 555: Your 0507 position is about 7 miles from Bridgeport, CT. What is the distance from this position to Newport, RI?
N a. 114 miles N b. 101 miles N c. 95 miles Y d. 88 miles 567: What is the distance from Lamberts Point to abeam of Thimble Shoal Lt. following the navigable channel?
Y a. 11.2 miles N b. 10.6 miles N c. 9.8 miles N d. 9.0 miles 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 808: On 28 July , your 0800 zone time fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN) occurs at 1149 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'. What is the calculated latitude at LAN?
N a. 26°21.9'N N b. 26°23.4'N Y c. 26°25.0'N N d. 26°27.7'N 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 1141: Which daymark will you see as you approach Natchez Beam Lt. (mile 364.8 AHP)?
Y a. Red triangle N b. White square N c. Green square N d. Red diamond 1228: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads 8.9 ft. If the highest point on your vessel is 54 ft. above the water, what is your vertical clearance?
Y a. 63.1 feet N b. 65.3 feet N c. 67.2 feet N d. 122.0 feet 1295: After passing Wilkinson Lt. you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations Y c. keep as close to the left descending bank as safety permits N d. keep as close to the right descending bank as safety permits 1729: Which light characteristics does Coggins Lt. (mile 429.5) have?
N a. 1 red flash every 4 seconds Y b. 1 white flash every 4 seconds N c. 1white flash every 5 seconds N d. 2 white flashes every 4 seconds 1763: At 2126, you pass Morganza Bend Light (mile 278.4 AHP).
At 0226, 4 January, you pass Red River Landing Gage (mile 302.4 AHP). You have been turning for 7.5 mph. What is the current?
N a. 1.4 mph N b. 1.8 mph Y c. 2.7 mph N d. 6.2 mph 1775: At 1412 you increase speed to make good 10.2 mph. At 1506 you have a daymark on your port beam. Which daymark is this?
N a. Bessie Daymark Y b. Nolan Light N c. Everetts Light N d. Marr Towhead Light 1856: On 22 June , your 0424 ZT DR position is LAT 26°18.5'N,
LONG 124°18.2'W. You observe an unidentified star bearing 031°T at an observed altitude (Ho) of 49°26.0'. The chronometer reads 00h 23m 24s and is 01m 32s slow. What star did you observe?
N a. Peacock Y b. Schedar N c. Ankaa N d. Alioth 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 1921: On 17 March , your 1845 DR position is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing 340°T at an observed altitude (Ho) of 66°25.1'. The chronometer reads 10h 47m 49s, and is 1m 54s fast. What star did you observe?
Y a. Capella N b. Mirfak N c. Pollux N d. Rigel 2016: On 23 March , your 1600 ZT DR position is LAT 27°16.3'N, LONG 156°48.2'W. You are on course 063°T at a speed of 18.0 knots. Considering their magnitude, azimuth, and altitude, which group includes the three stars best suited for a fix at star time?
N a. Arcturus, Regulus, Sirius N b. Procyon, Sirius, Capella Y c. Hamal, Rigel, Alphard N d. Betelgeuse, Dubhe, Regulus 2116: At 0300, your position is LAT 41°01.7'N, LONG 72°55.1'W. From this position you steer a course of 289° per standard magnetic compass at an engine speed of 10.0 knots. At what time can you first expect to see Stratford Shoal Middle Ground Light if the luminous range is 8.0 miles?
Y a. 0303 N b. 0309 N c. 0312 N d. 0318 2121: At 1337 ZT, on July 17, , in DR position LAT 30° 56.8' S, LONG 039° 36.5' W, you observe an amplitude of the Moon. The upper limb of the moon is on the visible horizon, bearing 263.0°psc. The variation is 20°W. What is the deviation?
N a. 2.6°E N b. 2.6°W Y c. 3.6°E N d. 3.6°W 2240: At 1542 ZT, on 23 October , in DR position LAT 37° 28.5'N, LONG 156° 17.3'E, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 282.5°psc. The variation is 0.0°. What is the deviation?
Y a. 2.2°E N b. 2.2°W N c. 1.2°E N d. 1.2°W 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 2665: You are on course 079°T, speed 11.2 knots. At 0904 you see a daymark bearing 078°T at a range of 4.6. If you change course at 0910 to leave the daymark abeam to starboard at 0.5 mile, at what time will the daymark be abeam?
N a. 0918 N b. 0923 Y c. 0928 N d. 0935 2787: What is the length of the trip?
Y a. 1088.5 miles N b. 1332.2 miles N c. 1334.6 miles N d. 1566.4 miles 2856: Your vessel is on a course of 034°T at 17 knots. At 0551 a light bears 056.5°T, and at 0623 the light bears 079°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0636, 5.9 miles N b. 0646, 5.9 miles N c. 0636, 6.4 miles Y d. 0646, 6.4 miles 2856: Your vessel is on a course of 034°T at 17 knots. At 0551 a light bears 056.5°T, and at 0623 the light bears 079°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0636, 5.9 miles N b. 0646, 5.9 miles N c. 0636, 6.4 miles Y d. 0646, 6.4 miles 2912: Your vessel is on a course of 079°T at 11 knots. At 0152 a light bears 105.5°T, and at 0209 the light bears 124°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0219, 2.3 miles Y b. 0226, 3.1 miles N c. 0233, 3.9 miles N d. 0242, 4.7 miles 3066: The observed noon to noon run for a 24 hour period is 489 miles. The average RPM for the day was 95. The pitch of the wheel is 22.5 feet. What is the slip of the wheel?
N a. +3.2% Y b. +3.4% N c. +3.7% N d. +3.9% 3751: While proceeding up a channel on course 010° per gyro compass, you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check of the chart shows the range to be 009°T and the variation to be 15°W. If the ship's course is 026°psc, what is the deviation for the present heading?
Y a. 2°W N b. 2°E N c. 1°W N d. 1°E 3757: 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 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?
N a. 2°E Y b. 2°W N c. 6°E N d. 6°W 3761: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 283°
T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?
N a. 5°E N b. 5°W N c. 8°E Y d. 8°W 3762: 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 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?
N a. 3°E Y b. 3°W N c. 4°E N d. 4°W 10207: Your 2230 position is LAT 41°07.4'N, LONG 72°44.0'W. Assuming that there is no set and drift, what course must you steer per standard magnetic compass to leave Twenty-Eight Foot Shoal Lighted Buoy 1 mile abeam to starboard?
Y a. 086°psc N b. 091°psc N c. 094°psc N d. 098°psc 11308: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2011 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
Y a. 13.7 knots N b. 12.0 knots N c. 11.6 knots N d. 10.9 knots 11708: Your position is LAT 37°00.9'N, LONG 75°30.0'W. What is the course to steer per magnetic compass to arrive at LAT 36°59.0'N, LONG 75°48.5'W, if you are turning for 7.8 knots the current is 339°T at 1.3 knots, and a northwesterly wind is causing 3° of leeway?
Y a. 265°psc N b. 267°psc N c. 269°psc N d. 271°psc 11809: What course should you steer by your standard magnetic compass (psc) from a position 2 miles due south of Branford Reef Light to Horton Pt. Light, if the set and drift of the current are 065°T at 2 knots, and a northerly wind will cause 2° of leeway? Your engines are turning for 14 knots.
N a. 113°psc N b. 118°psc Y c. 128°psc N d. 134°psc 13405: At 0400 your vessel is dead in the water and in heavy fog. Your GPS position is LAT 41°12.1'N, LONG 72°43.5'W. Bottom samples are taken and indicate a composition of soft mud and shell. Your fathometer reads 40 feet. If the vessel draws 9 feet of water, which of the following is TRUE?
Y a. The bottom samples and fathometer reading prove the fix is reliable. N b. The bottom samples and fathometer readings indicate that the fix is unreliable. N c. The information collected indicates that the fathometer may be in error. N d. The information collected indicates that the chart is most likely in error. 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. 15429: What is the vertical clearance of the Vicksburg Highway 80 Bridge when the river level is the same as the Low Water Reference Plane? The low water reference plane (LWRP) for Vicksburg, MS. is 0.1.
N a. 128.3 ft N b. 125.6 ft N c. 119.5 ft Y d. 116.1 ft 15457: What is the distance from Lamberts Point to Thimble Shoal Lt.?
N a. 9.0 miles N b. 9.8 miles N c. 10.6 miles Y d. 11.2 miles 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. 15517: From your 1915 position, you come left and set a course for Gardiners Point. At 1930, your position is LAT 41°12.7'N,
LONG 71°56.8'W. What type of bottom is charted at this position?
N a. Blue mud, gritty shells N b. Buried mussels, gritty shells Y c. Blue mud, gray sand N d. Bumpy muck with grainy surface 15628: The Natchez Gage reads 20.6 feet. The high point on your towboat is 47 feet above the water. What is the vertical clearance as you pass under the Natchez Highway Bridge?
Y a. 58.0 feet N b. 64.1 feet N c. 72.5 feet N d. 78.6 feet 15666: At 0815, visibility is excellent and you can see Montauk Point. Montauk Point Light is __________.
N a. shown from a brown tower N b. equipped with a fog diaphone Y c. lighted 24 hours N d. is 79 feet (24 meters) high 15706: At 0700, Stratford Shoal Middle Ground Light bears 137°
pgc. From your radar, you get a bearing of 007°pgc to the south tip of Stratford Point with a range of 4.5 miles. What is your 0700 position?
N a. LAT 41°04.6'N, LONG 73°07.0'W N b. LAT 41°04.6'N, LONG 73°07.4'W Y c. LAT 41°04.7'N, LONG 73°07.2'W N d. LAT 41°04.8'N, LONG 73°07.0'W 15728: What company does NOT have a marine facility along the river bank in Helena (mile 658 to 665 AHP)?
Y a. Helena Grain Co. N b. Helena Port Terminal, Inc. N c. Arkansas Power & Light Co. N d. Texas Eastern Pipeline Co. 15909: From your 0740 position, you change course to pass 1.1 miles north of Falkner Island Light. What loran reading will ensure that you will remain clear of the 18' shoal located 1 mile NW of Falkner Island Light?
N a. 9960 W: not less than 14942 N b. 9960 X: not more than 26452 Y c. 9960 Y: not less than 44013 N d. None of the above 15914: At 0844, the range to the north end of Falkner Island is 2.0 miles and the left tangent bearing is 102°T. What is the approximate charted depth of the water?
N a. 14 ft (4.2 meters) N b. 19 ft (5.8 meters) N c. 22 ft (6.7 meters) Y d. 29 ft (8.8 meters) 16007: If the visibility is 11 miles, what is the earliest time you can expect to see New Haven Light?
N a. The light is visible at 0352. N b. 0414 Y c. 0443 N d. You will not sight the light. 16264: Which statement about your 0400 position is true?
N a. You are governed by the Inland Rules of the Road. N b. Anchoring, trawling and fishing are prohibited. N c. The ocean floor is composed of shingle. Y d. You are within the Territorial Sea and the contiguous zone. 16412: Shortly after getting underway, your heading is 097° per standard magnetic compass, and you sight Stonington Outer Breakwater Light in line with Stonington Inner Breakwater Light bearing 000° per gyrocompass. Which statement is TRUE?
Y a. The gyro error is 2.5°W. N b. The variation is 2°E. N c. The compass error is 16°W. N d. The deviation is 2°W. 16463: The visibility is about 5 miles. Which statement about Cape Charles Light is TRUE?
N a. The light has been visible since you departed the anchorage. N b. You will not see the light until you are within 5 miles of the light. Y c. The light will become visible about 0400. N d. The light will not be visible until you enter the inbound leg of the traffic separation scheme.