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.
89: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. Army Corps. of Engineers Navigation Chart N b. U.S.C.G. Light List Y c. U.S.C.G. Local Notice to Mariners N d. List of Buoys and Daymarks 122: From Baton Rouge to Cairo, what is the maintained minimum channel depth during low water?
N a. 6 feet Y b. 9 feet N c. 12 feet N d. 30 feet 153: What is the minimum maintained depth of the channel from Cairo to Baton Rouge during low water?
Y a. 9 feet N b. 12 feet N c. 15 feet N d. 18 feet 184: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________.
N a. 40 feet (12.2 meters) Y b. 50 feet (15.2 meters) N c. 60 feet (18.3 meters) N d. 70 feet (23.2 meters) 201: What course should you steer by your standard magnetic compass to make good a course of 280°T?
Y a. 294°psc N b. 290°psc N c. 272°psc N d. 266°psc 378: A vessel at LAT 37°24.0'N, LONG 178°15.0'W, heads for a destination at LAT 34°18.0'N, LONG 178°25.0°E. Determine the true course and distance by Mercator sailing.
N a. 041°T, 273.9 miles N b. 047°T, 273.9 miles Y c. 221°T, 247.2 miles N d. 227°T, 247.2 miles 397: Your vessel departs LAT 32°45'N, LONG 79°50'W, and is bound for LAT 34°21'S, LONG 18°29'E. Determine the distance by Mercator sailing.
N a. 5,021 miles Y b. 6,884 miles N c. 6,954 miles N d. 7,002 miles 405: You depart LAT 33°45.0'N, LONG 118°30.0'W, and steam 2216 miles on course 250°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 156°08.0'W N b. LONG 156°36.0'W N c. LONG 157°21.0'W Y d. LONG 157°31.0'W 479: The great circle distance from LAT 24°25.3'N, LONG 83°02.6'W to LAT 35°57.2'N, LONG 5°45.7'W is 3966.5 miles. Determine the latitude of the vertex.
N a. 38°46.2'N N b. 38°16.4'N Y c. 38°09.4'N N d. 37°57.3'N 490: At 0728, you change course to 080°T. When steady on course, the standard magnetic compass reads 097°. Which statement is TRUE?
Y a. The magnetic compass error is 17°W. N b. The magnetic heading is 090°. N c. The deviation is 1.0°E. N d. The gyro course is 083°pgc. 526: Your vessel receives a distress call from a vessel reporting her position as LAT 35°01.0'S, LONG 18°51.0'W. Your position is LAT 35°01.0'S, LONG 21°42.0'W. Determine the true course and distance from your vessel to the vessel in distress by parallel sailing.
Y a. 090°T, 140.0 miles N b. 090°T, 189.2 miles N c. 270°T, 140.0 miles N d. 270°T, 189.2 miles 652: On a voyage via the southern tip of Nova Scotia (LAT 43°20'N, LONG 65°35'W) you wish to sail the shortest route to La Coruna, Spain (LAT 43°20'N, LONG 8°24'W). Which of the following will require you to plot a composite sailing? (Use gnomonic tracking chart WOXZC 5274)
N a. Shoals extending 15 miles from Sable Island N b. Sea ice reported 68 miles ESE of St. John's, Newfoundland Y c. Icebergs reported extending west to west-northwest from LAT 47°00'N, LONG 35°00'W N d. Naval exercises using live ammunition being conducted within a 150 mile radius of LAT 49°00'N, LONG 20°00'W 703: 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. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Map Y d. None of the above 821: On 30 August , in DR position LAT 26°34.0'N, LONG 141°36.0'W, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 09h 15m 26s, and the chronometer error is 00m 00s. The sextant altitude (hs) is 71°41.7'. The index error is 3.2' off the arc, and your height of eye is 49.6 feet. What is the latitude at meridian transit?
Y a. LAT 26°41.9'N N b. LAT 26°44.6'N N c. LAT 26°48.2'N N d. LAT 26°52.3'N 822: On 10 March , in DR position LAT 21°42.0'S, LONG 57°28.0'E, you take an ex-meridian observation of the Sun's lower limb. The chronometer time of the sight is 08h 28m 17s, and the chronometer error is 00m 00s. The sextant altitude (hs) is 72°08.0'. The index error is 3.4' on the arc, and your height of eye is 52.7 feet. What is the latitude at meridian transit?
N a. LAT 21°32.5'S N b. LAT 21°40.6'S Y c. LAT 21°45.5'S N d. LAT 21°50.2'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 1201: On 10 October , your 0930 zone time position is LAT 25°00.0'S, LONG 164°38.6'W. Your vessel is on course 180°T at a speed to 10.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1145 N b. 1151 N c. 1203 N d. 1206 1415: The highest point on your towboat is 52 feet above the water, and the Helena Gage reads +9.6 feet. What will be the vertical clearance when you pass under the A-span of the Helena Highway Bridge?
N a. 49.8 feet N b. 53.9 feet Y c. 57.8 feet N d. 73.1 feet 1535: The Red River Landing Gage reads 5.2 feet. The low water reference plane (LWRP) for Red River is 10.6 feet. Which of the following statements is TRUE?
Y a. River level is below the Low Water Reference Plane. N b. The depth over revetment at Old River is 25.2 ft. N c. The depth over Old River Lock sill is greater than 11 ft. N d. This gage reading is at a higher elevation than the same reading on the Gage at Head of Passes. 1650: On 22 October , in DR position LAT 21°51.0'S, LONG 76°24.0'E, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 256°psc. The chronometer reads 01h 01m 25s and is 01m 15s fast. Variation for the area is 2°E. What is the deviation of the standard magnetic compass?
N a. 0.3°E Y b. 0.3°W N c. 2.0°E N d. 2.0°W 1831: You pass Warnicott Bar Lt. at 1146, 24 May. What is your ETA off the Mhoon Landing Gage if you average 6.5 mph?
N a. 0152, 26 May N b. 0426, 26 May Y c. 1528, 26 May N d. 0909, 27 May 1900: On 22 May , your 0437 DR position is LAT 25°18.5'N, LONG 51°18.0'W. You observed an unidentified star bearing 233°T at an observed altitude (Ho) of 29°42.3'. The chronometer reads 07h 40m 40s, and is 03m 24s fast. What star did you observe?
N a. Markab N b. Diphda Y c. Sabik N d. Hamal 2182: On 18 August , at 0600 ZT, morning stars were observed, and the vessel's position was determined to be LAT 19°48'N, LONG 108° 34'W. Your vessel is steaming on course 166°T at a speed of 16 knots. An observation of the Sun's lower limb is made at 1036 ZT. The chronometer reads 05h 34m 48s and is slow 01m 24s. What is the computed altitude (Hc) and azimuth (Zn) for this 1036 ZT observation using the assumed position method?
N a. Hc 65°18.5', Zn 102.1° Y b. Hc 65°14.8', Zn 100.4° N c. Hc 65°11.3', Zn 099.4° N d. Hc 65°07.2', Zn 101.2° 2233: You have orders to drop off the empties at the fleeting area at Cairo Point and add five loaded tank barges to your tow. If you are turning for 9 mph and estimate the current at 1.5 mph, what is your ETA at Cairo?
N a. 1031, 22 June Y b. 1423, 22 June N c. 1741, 22 June N d. 2210, 22 June 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 2716: The charts show two dashed lines crossing the river just south of St. Catherine Bar Light. What does this indicate?
N a. Overhead power lines N b. Louisiana-Mississippi ferry crossings N c. Two railroad trestles Y d. Two submerged oil pipelines 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 2861: Your vessel is on a course of 196°T at 17 knots. At 0417 a light bears 218.5°T, and at 0442 the light bears 241°T. At what time and at what distance off will your vessel be when abeam of the light?
Y a. 0500, 5.0 miles N b. 0504, 6.2 miles N c. 0500, 6.2 miles N d. 0504, 5.0 miles 2879: Your vessel is steering 354°T at 14 knots. At 0317 a light bears 049°T, and at 0342 the same light bears 071°T. What will be your distance off abeam?
Y a. 12.4 miles N b. 12.7 miles N c. 13.0 miles N d. 13.3 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% 3107: You are turning 68 RPM, with a propeller pitch of 18 feet, and an estimated slip of +2%. What is the speed of advance?
N a. 10.7 knots N b. 11.5 knots Y c. 11.8 knots N d. 12.3 knots 3312: You have steamed 199 miles and consumed 23.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 410 miles?
N a. 32.6 tons N b. 39.9 tons Y c. 47.4 tons N d. 97.6 tons 3636: You desire to make good a true course of 279°. The variation is 8°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°E. A north-northwesterly wind produces 3° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?
N a. 281°psc N b. 284°psc Y c. 287°psc N d. 290°psc 11805: What is the true course to steer between Stratford Shoal (Middle Ground Light) and New Haven Light, if the set and drift of the current are 048°T at 2 knots, and a southeasterly wind will cause 2° of leeway? Your engines are making turns for 10 knots.
N a. 032°T Y b. 037°T N c. 039°T N d. 041°T 12507: You are on course 300° per standard magnetic compass (psc) when you take the following bearings: New Point Comfort Spit Light "2" 240°psc Horn Harbor Entrance Light HH 268°psc Wolf Trap Light 003°psc What is the position of the fix?
N a. LAT 37°20.8'N, LONG 76°09.6'W Y b. LAT 37°20.8'N, LONG 76°11.0'W N c. LAT 37°20.9'N, LONG 76°11.5'W N d. LAT 37°21.1'N, LONG 76°08.2'W 13000: Your 2108 position is LAT 41°10.0'N, LONG 72°30.0'W. You are turning for 12.5 knots. What is your ETA at Buoy NH (LAT 41°12.1'N, LONG 72°53.8'W)?
N a. 2133 N b. 2227 Y c. 2235 N d. 2248 15119: What is the height above water of Davis Creek Channel Light "1"?
N a. 6 feet (1.8 meters) Y b. 15 feet (4.6 meters) N c. 17 feet (5.2 meters) N d. 24 feet (7.3 meters) 15241: At 1155 your vessel's position is LAT 41°09.0'N, LONG 72°34.4'W. If you make good a course of 282°T and a speed of 10.0 knots, when will you arrive at New Haven Harbor Lighted Whistle Buoy "NH"?
N a. 1315 N b. 1320 Y c. 1325 N d. 1330 15317: If you make good a speed of 6.0 knots from your 1810 position, what is your ETA at Chesapeake Channel Lighted Bell Buoy "2C"?
Y a. 1833 N b. 1845 N c. 1855 N d. 1900 15518: From your 1930 position, you plot a course to pass 0.5 mile due south of Race Rock Light. If your vessel's speed is 10.0 knots, the current's set and drift are 040°T at 1.8 knots, and a north wind produces a 3° leeway, what true course should you steer to make good your desired course?
N a. 275°T Y b. 280°T N c. 290°T N d. 294°T 15668: At 0839, Montauk Pt. Light is bearing 205°T at a radar distance of 6.6 miles. What is your speed made good from your 0815 position?
N a. 8.2 knots Y b. 9.2 knots N c. 10.0 knots N d. 10.5 knots 15714: At 1100, your position is LAT 41°11.3'N, LONG 72°28.0'W. You are steering a course of 069°T to leave Black Point one mile off your port beam. It has been reported that the Long Sand Shoal Buoys and Hatchett Reef Buoys are off station. Which of the following will serve as a line marking the hazards and keep your vessel in safe water?
Y a. Danger bearing to Black Point of not more than 064°T N b. Maintaining a 7 nm range off Orient Point N c. A bearing to Little Gull Island Light of not less than 090° N d. A distance to Saybrook Breakwater Light of not less than 1.3 miles 15741: At 2050 Montauk Point Light is bearing 337° true at a range of 8 nm, From this position, you change course in order to pass 1 mile due east of Montauk Point Lighted Whistle Buoy "MP". If there are no set and drift, what course must you steer?
Y a. 024°T N b. 028°T N c. 032°T N d. 036°T 16011: At 0415, you take the following bearings:
Stratford Point Light 329.5°pgc
Middle Ground Light 223.5°pgc
Old Field Point Light 199.5°pgc
Which statement is TRUE?
Y a. You are to the right of your intended track line. N b. The current's drift is greater than predicted. N c. The course made good since 0352 is 081°T. N d. Your fathometer reads about 76 fathoms. 16042: At 1022 when you complete the evacuation, you get underway on course 098°T and order turns for 14.5 knots. You take the following round of bearings at that time:
Stratford Point Light - 260° per gyrocompass
New Haven Light - 326° per gyrocompass
SW Ledge Light - 358° per gyrocompass
Determine your ETA and distance off when abeam of Falkner Island Light, if there are no set and drift?
N a. 1102, 3.0 miles Y b. 1108, 3.3 miles N c. 1114, 3.1 miles N d. 1118, 3.3 miles 16067: At 2118, you obtain the following information:
Cape Henry Light 151°pgc;
Cape Charles Light 033°pgc;
Thimble Shoal Light 291°pgc
What is your 2118 position?
Y a. LAT 36°57.4'N, LONG 76°01.9'W N b. LAT 36°57.5'N, LONG 76°01.4'W N c. LAT 36°57.6'N, LONG 76°01.8'W N d. LAT 36°57.6'N, LONG 76°02.2'W 16212: What is the course per standard magnetic compass between points "A" and "B"?
N a. 094.5° N b. 095.5° Y c. 098.5° N d. 099.5° 16457: The coast between Great Machipongo Inlet and Cape Charles is __________.
N a. broken by the mouths of several major rivers Y b. low, with sandy beaches bordered by marsh and woodlands N c. marked by prominent, isolated, barren hills N d. composed of high, rocky bluffs and wooded uplands 16515: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. Y b. Alter your course to the left. N c. Slow to 8.5 knots. N d. Alter your course to the right. 16620: You sight Bartlett Reef Light in line with New London Harbor Light bearing 043°pgc. You are heading 088°pgc and 098.5° per standard magnetic compass at the time of the observation. Which statement is TRUE?
N a. The true heading at the observation was 090°. Y b. The deviation is 1.5°E by observation. N c. The magnetic compass error is 9.5°W. N d. The gyro error is 2°E.