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.
67: The Gage at Red River Landing reads 22.2 feet. The LWRP for Red River is 10.6 feet. What is the water level in relation to the low water reference plane?
N a. 32.8 ft below N b. 32.8 ft above N c. 11.6 ft below Y d. 11.6 ft above 198: While navigating inbound Thimble Shoal Channel system you must __________.
N a. navigate in the main channel when between Trestles A & B Y b. use the north auxiliary channel N c. remain 1500 yards (1360 meters) from large naval vessels N d. maintain a speed of six knots 213: 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 N c. Bumpy muck with grainy surface Y d. Blue mud, gray sand 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 285: At 1845, you plot the following bearing lines:
Old Plantation Flats Light bearing 251°true
New Point Comfort Light bearing 335°true
Your latitude is __________.
N a. 37°10.7'N N b. 37°10.9'N Y c. 37°11.2'N N d. 37°11.6'N 315: From your 1430 fix, you order turns for 8 knots. You steer 045°T and experience no set and drift. At what time would you expect to have New Point Comfort Spit Light "4" abeam?
N a. 1510 N b. 1504 Y c. 1458 N d. 1452 407: You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?
Y a. LONG 40°33.5'W N b. LONG 40°19.5'W N c. LONG 40°18.2'W N d. LONG 40°17.3'W 468: Determine the great circle initial course from LAT 07°05.0'N, LONG 81°45.0'W to LAT 21°15.0'N, LONG 157°40.0'W.
N a. 128°T N b. 217°T Y c. 290°T N d. 326°T 537: Determine the distance from LAT 19°54.0'N, LONG 166°36.0'E to LAT 19°54.0'N, LONG 157°54.0'W. by parallel sailing.
N a. 2204.6 miles N b. 2006.9 miles Y c. 2002.8 miles N d. 1990.6 miles 604: At 1820 zone time, on 21 March , you depart San Francisco, LAT 37°48.5'N, LONG 122°24.0'W (ZD +8). You are bound for Melbourne, LAT 37°49.2'S, LONG 144°56.0'E, and you estimate your speed of advance at 21 knots. The distance is 6,970 miles. What is your estimated zone time of arrival at Melbourne?
N a. 1214, 4 April N b. 2214, 4 April Y c. 0814, 5 April N d. 1314, 5 April 609: At 0915 zone time, on 7 April , you depart San Francisco, LAT 37°48.5'N, LONG 122°24.0'W (ZD +8). You are bound for Kobe, LAT 34°40.0'N, LONG 135°12.0'E, and you estimate your speed of advance at 17 knots. The distance is 4,819 miles. What is your estimated zone time of arrival at Kobe?
N a. 0343, 18 April N b. 1243, 19 April Y c. 2143, 19 April N d. 0443, 20 April 662: You are planning a voyage by great circle from LAT 38°00'N, LONG 73°00'W to LAT 49°00'N, LONG 06°00'W. Which of the following statements is TRUE? (Use gnomonic tracking chart WOXZC 5274)
N a. You will pass to the south of icebergs reported extending to 100 miles south of Cape Race Newfoundland. Y b. The shoals with a 25-mile radius around Sable Island will be a hazard. N c. You will reach the maximum northerly latitude at longitude 29°45'W. N d. The distance is measured in 60-mile segments using the length of a degree of latitude at the vertex. 811: On 1 July , your 0515 ZT fix gives you a position of LAT 24°36.0'S, LONG 151°42.0'W. Your vessel is on course 300°T, and your speed is 10.0 knots. Local apparent noon (LAN) occurs at 1215 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 42°55.0'. What is the calculated latitude at LAN?
N a. 24°03.6'S N b. 24°02.5'S Y c. 24°01.0'S N d. 24°00.0'S 992: At 0100 zone time, on 23 September , your DR position is LAT 24°25.0'N, LONG 83°00.0'W. You are steering course 315°T. The speed over the ground is 10.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1100 running fix? NP-0002
Y a. LAT 25°35.3'N, LONG 84°17.0'W N b. LAT 25°42.6'N, LONG 84°18.7'W N c. LAT 25°30.4'N, LONG 84°28.6'W N d. LAT 25°28.3'N, LONG 84°34.3'W 996: On 30 August your 0554 zone time (ZT) position was LAT 25°39.0'S, LONG 31°51.0'E. Your vessel was steaming on course 325°T at a speed of 15.0 knots. An observation of the Sun's lower limb was made at 0836 ZT. The chronometer read 06h 38m 36s and was fast 02m 24s. The observed altitude (Ho) was 30°49.2'. LAN occurred at 1157 ZT. The observed altitude (Ho) was 56°40.0'. What was the longitude of your 1157 ZT running fix?
N a. 30°59.8'E N b. 30°57.6'E N c. 30°55.9'E Y d. 30°52.5'E 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 1184: On 8 April , your 0830 zone time DR position is LAT 22°49.0'N, LONG 84°37.0'W. Your vessel is on course 228°
T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1144 N b. 1147 N c. 1150 N d. 1154 1192: On 3 October , your 0830 ZT position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the ZT of local apparent noon (LAN)?
N a. 1151 N b. 1154 N c. 1158 Y d. 1201 1198: On 3 October , your 0830 zone time DR position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T at a speed of 19.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1201 N b. 1158 N c. 1155 N d. 1152 1207: On 10 July , your 0930 zone time DR position is LAT 26°31.0'S, LONG 4°41.0'E. Your vessel is on course 308°T at a speed of 22.0 knots. What is the zone time of local apparent noon (LAN)?
N a. 1144 Y b. 1149 N c. 1153 N d. 1159 1215: It is 9 February and you are keeping zone time -6. You are on course 258°T, speed 19 knots. Your 0840 DR position is LAT 26°21.0'S, LONG 78°39.0'E. What is the time of the second estimate of LAN by ship's clocks?
N a. 12h 05m 21s N b. 12h 37m 12s N c. 13h 13m 40s Y d. 13h 05m 44s 1463: On 26 May , your 0723 zone time DR position is LAT 24°50.0'N, LONG 38°11.0'W. At that time, you observe the Sun bearing 076.5°psc. The chronometer reads 10h 25m 43s, and the chronometer error is 02m 57s fast. The variation is 7°W. What is the deviation of the standard magnetic compass?
N a. 3.3°E N b. 3.7°W N c. 8.3°W Y d. 10.7°E 1483: On 31 May , your vessel's 1420 zone time DR position is LAT 29°06'N, LONG 120°06'W, when an azimuth of the Sun is observed. The bearing of the Sun per standard magnetic compass was 255.3°. The chronometer time of the observation is 10h 17m 24s. The chronometer error is 02m 32s slow. The variation for this area is 12.9°E. What is the deviation of the standard magnetic compass?
Y a. 2.5°W N b. 2.9°W N c. 2.9°E N d. 3.2°E 1672: On 11 May , your vessel's 1839 ZT position is LAT 17°30'N, LONG 63°55'W, when an amplitude of the Sun's center is observed on the celestial horizon bearing 301° per standard magnetic compass. Variation for this area is 10.5°W. The chronometer reads 10h 37m 10s and is 02m 08s slow. What is the deviation of the compass?
N a. 2.5°W N b. 2.0°W Y c. 1.5°W N d. 2.0°E 1733: What are the dimensions of the channel maintained at Baton Rouge, LA?
N a. 30 feet x 300 feet N b. 40 feet x 300 feet Y c. 45 feet x 500 feet N d. 30 feet x 500 feet 1858: On 22 April , your 1852 ZT DR position is LAT 23°54.5'
N, LONG 117°36.8'W. You observe an unidentified star bearing 129°T at an observed altitude (Ho) of 27°10.0'. The chronometer reads 02h 54m 53s and is 02m 51s fast. What star did you observe?
N a. Diphda N b. Betelgeuse Y c. Gienah N d. Arcturus 1872: On 12 June , your 1845 DR position is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star through a break in the clouds. The star bears 031°T at a sextant altitude (hs) of 70°10.3'. The index error is 0.5' on the arc, and the height of eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error is 1m 46s slow. What star did you observe?
N a. Sheratan N b. Ruchbah N c. Mimosa Y d. Cor Caroli 1952: As you approach Dean Island Light (mile 754.8 AHP), which type of daymark will be observed at the light?
N a. Green triangle Y b. Green diamond N c. Green square N d. Red-and-green banded square 2166: On 10 January , at 0550 ZT, morning stars were observed, and the vessel's position was determined to be LAT 25°16.0'N, LONG 123°18.0'W. Your vessel is steaming at 22.0 knots on a course of 295°T. A sextant observation of the Sun's lower limb is made at 0915 ZT. The chronometer reads 05h 14m 02s, and the sextant altitude is 24°00.7'. The index error is 2.6' off the arc, and the chronometer error is 01m 34s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 127.8°T N b. 129.8°T Y c. 131.9°T N d. 133.6°T 2205: What are the dimensions of Old River Lock, on the Lower Mississippi River?
N a. 1202 feet x 84 feet Y b. 1190 feet x 75 feet N c. 760 feet x 75 feet N d. 425 feet x 75 feet 2212: At 1650 you decrease speed to make good 7.1 mph. At 2020 you are __________.
Y a. abeam of Old River Control Structure Light N b. entering the Vicksburg District of the U.S. Army Corps. of Engineers N c. at Palmetto Point N d. at Latitude 31°10'N 2392: Which company does NOT have a marine facility in Rosedale harbor (mile 585 AHP)?
N a. Sanders Elevator Corp N b. Rosedale-Boliver County Port Commission Y c. T.L. James N d. Cives Steel Company 2851: Your vessel is on a course of 297°T at 11 knots. At 0019 a light bears 274.5°T, and at 0048 the light bears 252°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0102, 2.6 miles Y b. 0108, 3.7 miles N c. 0057, 4.6 miles N d. 0117, 5.0 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 2887: Your vessel is steering 283°T at 10 knots. At 0538 a light bears 350°T, and at 0552 the same light bears 002°T. What will be your distance off abeam?
N a. 9.6 miles Y b. 10.3 miles N c. 10.7 miles N d. 11.3 miles 3604: You wish to make good a course of 258°T, allowing 4° leeway for northerly winds. The variation is 21°W. What should you steer per standard magnetic compass to make good 258°T?
DEVIATION TABLE
MAGNETIC HDG DEVIATION
285° 5°E
270° 3°E
255° 1°E
240° 1°W
N a. 242°psc N b. 271°psc Y c. 278°psc N d. 288°psc 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 10503: At 0817 your GPS indicates a position of LAT 37°01.6'N, LONG 75°31.7'W. You are on course 182° per standard magnetic compass at a speed of 9.2 knots. At 0913 your GPS indicates your position at LAT 36°52.3'N, LONG 75°30.8'W. What were the set and drift?
N a. 121°T at 0.8 knot N b. 139°T at 1.1 knots Y c. 219°T at 1.1 knots N d. 298°T at 0.7 knot 10504: At 1354 your GPS indicates a position of LAT 37°00.0'N, LONG 75°45.8'W. You are on course 088° per standard magnetic compass at a speed of 9.5 knots. At 1500 your GPS indicates your position as LAT 37°01.6'N, LONG 75°31.7'W. What were the set and drift?
N a. 273°T at 0.8 knot N b. 241°T at 1.1 knots N c. 061°T at 1.3 knots Y d. 092°T at 0.9 knot 10702: At 1922 your position is LAT 41°09.2'N, LONG 71°40.6'W. You are on course 028° per standard magnetic compass at 6.4 knots. At 2046 your position is LAT 41°17.2'N, LONG 71°38.6'W. What were the set and drift?
Y a. 235°T at 0.8 knot N b. 247°T at 1.1 knots N c. 049°T at 0.7 knot N d. 062°T at 1.0 knots 10706: At 0726 you depart Lake Montauk with light 1 close aboard and set course 310.5° per standard magnetic compass at 7.6 knots. At 0812 your GPS position is LAT 41°08.1'N, LONG 72°03.7'W. What is the current?
N a. 151°T at 1.0 knot N b. 164°T at 0.7 knot Y c. 334°T at 1.4 knot N d. 321°T at 0.8 knot 12102: You sight Thimble Shoal Light in line with Old Point Comfort Light bearing 265° per standard magnetic compass. You are on course 135°psc. Based on this, you know __________.
N a. there is no compass error N b. there is a local magnetic disturbance N c. you should swing your vessel and check the deviation table Y d. the deviation is 0° 13210: At 0943, your position is LAT 41°14.8'N, LONG 71°54.3'W. You are turning for 12.2 knots. What is your ETA at the entrance to Great Salt Pond on Block Island?
Y a. 1054 N b. 1048 N c. 1040 N d. 1032 14205: You are off the coast of Mexico and are taking a time tick for 1600. At approximately 1554, you hear the preparatory signal "VVVV de XDD" from the time signal station. Then you hear a series of 1 second dashes followed by a 9 second silent period and then a long 1.3 second dash. At the beginning of the long dash, your comparing watch reads 03h 59m 56s. When compared to the chronometer, the comparing watch reads 04h 01m 22s, and the chronometer reads 04h 02m 11s. What is the chronometer error?
N a. 0m 04s slow N b. 2m 15s slow Y c. 0m 45s fast N d. 1m 26s fast 15144: At 2310 Buoy "MP" bears 305° true with a radar range of 2.5 miles. From this position you change course to 005° true. Without any set and drift, what would be your predicted distance off Southwest Ledge Buoy "2" when it is on your starboard beam?
N a. 0.9 mile N b. 1.1 miles Y c. 1.5 miles N d. 1.9 miles 15214: If you steer 143°pgc from your 2015 position at an engine speed of 8.0 knots, at what time would you reach a point midway between buoys "11" and "12" (ignore set and drift)?
N a. 2023 Y b. 2029 N c. 2032 N d. 2037 15469: At 1037, you are on course 010°T at 10 knots, when you take the following bearings:
Old Plantation Flats Light bearing 125°pgc
Wolf Trap Light bearing 338°pgc
New Point Comfort Light bearing 286°pgc
What is your 1037 position?
N a. LAT 37°15.9'N, LONG 76°07.1'W Y b. LAT 37°16.1'N, LONG 76°07.4'W N c. LAT 37°16.2'N, LONG 76°07.8'W N d. LAT 37°16.3'N, LONG 76°07.2'W 15615: 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 is __________.
Y a. 359°T N b. 006°T N c. 014°T N d. 020°T 15770: 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 northerly winds and estimating the current as 035° at 0.3 knot, what is the course to steer (pgc) to point "B"?
N a. 084°pgc Y b. 086°pgc N c. 091°pgc N d. 094°pgc 15917: At what approximate distance would you expect Bartlett Reef Light to break the horizon, if the visibility is 27 nautical miles?
N a. 5.9 nm N b. 6.9 nm N c. 12.0 nm Y d. 12.8 nm 15944: From your 2038 position you change course to 104°T and increase engine speed to 18 knots. If you make good this course and speed, at what time will Southwest Ledge Lighted Bell Buoy "2" bear 157°T?
N a. 2047 Y b. 2052 N c. 2056 N d. 2101 16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?
N a. 5.0 knots N b. 5.3 knots N c. 5.8 knots Y d. 5.5 knots 16743: At 0040 you are south of Lewis Point when you receive word that the distress is terminated. You alter course to head for The Race. At 0052 you take the following relative bearings because the starboard gyro repeater is inoperative. Your heading at each bearing was 285°pgc. What is your 0052 position?
Race Rock Light 002°
Watch Hill Light 034°
Block Island North Light 122°
N a. LAT 41°08.8'N, LONG 71°41.4'W N b. LAT 41°09.0'N, LONG 71°42.3'W N c. LAT 41°09.0'N, LONG 71°41.1'W Y d. LAT 41°09.1'N, LONG 71°41.7'W 16840: Visibility is exceptionally clear. At approximately what distance did Chesapeake Light become visible?
N a. 19.2 miles Y b. 21.0 miles N c. 22.7 miles N d. 24.0 miles