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.
37: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads -3.6 feet. If the highest point on your vessel is 62 ft. above the water, what is your vertical clearance?
N a. 122.0 feet Y b. 67.6 feet N c. 63.6 feet N d. 60.0 feet 45: You are in charge of a vessel that damages an aid to navigation established and maintained by the United States. Which statement is TRUE?
N a. You must take the aid in tow and deliver it to the nearest Coast Guard, Marine Safety Office. Y b. You must report the accident to the nearest Officer in Charge, Marine Inspection. N c. You may wait until you reach your destination before reporting the allision to the U.S. Coast Guard. N d. You must report the allision to the nearest Corps. of Engineers office. 92: A stretch where the channel changes from one side of the river to the other is called a __________.
Y a. crossing N b. transit N c. transfer N d. passing 143: At 1609, on October 5, you are abeam of Star Landing Lt. (mile 707.2 AHP) . You calculate your speed since you departed Sycamore Chute fleeting area. If you are turning for 9.5 mph what was the current?
N a. 1.0 mph N b. 1.5 mph Y c. 2.0 mph N d. 2.5 mph 171: At 2015, your vessel is at the Chesapeake Bay Bridge and Tunnel midway between buoys "13" and "14". If the height of tide is -1 foot (-0.3 meters), what is the approximate depth of water?
N a. 35 feet (10.6 meters) N b. 43 feet (13.1 meters) N c. 46 feet (13.9 meters) Y d. 53 feet (15.5 meters) 295: At 1750, your position is LAT 37°14.5'N, LONG 76°22.9'W. What was the course made good between 1730 and 1750?
N a. 081°T Y b. 078°T N c. 075°T N d. 072°T 402: A vessel at LAT 38°36'N, LONG 11°36'W, heads for a destination at LAT 24°16'N, LONG 71°52'W. Determine the true course and distance by Mercator sailing.
N a. 236.4°T, 2,916.9 miles N b. 254.4°T, 2,916.9 miles Y c. 254.4°T, 3,203.6 miles N d. 285.6°T, 3,203.6 miles 406: You depart LAT 49°45.0'N, LONG 06°35.0'W, and steam 3599 miles on course 246.5°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 76°36.2'W Y b. LONG 77°02.8'W N c. LONG 78°14.0'W N d. LONG 78°22.6'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 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 491: At 0748, you take the following bearings:
Watch Hill Point Light bearing 020.5° pgc
Race Point Light bearing 267.5° pgc
What is the approximate depth of water at this position?
N a. 104 feet Y b. 130 feet N c. 175 feet N d. 325 feet 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 673: You estimate the current at 2.0 mph. What is the speed over the ground?
N a. 3.5 mph N b. 4.5 mph Y c. 5.5 mph N d. 9.5 mph 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 704: As you approach Giles Bend Cut-off Light (mile 367.7 AHP), what type of daymark would you see on the light structure?
N a. Green square N b. Green diamond Y c. Red triangle N d. Red diamond 742: On 15 July , at 0447 ZT, your vessel's DR position is LAT 22°42'N, LONG 126°36'E. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 23°46.2' with an index error of 1.6' off the arc. Your chronometer reads 08h 48m 28s, and is 1m 16s fast. What is your latitude by Polaris, given a height of eye of 33 feet?
N a. 22°44.1'N N b. 22°46.2'N N c. 22°50.2'N Y d. 22°54.1'N 812: On 28 July , your 0800 zone time (ZT) 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 1150 ZT, 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 latitude at 1200 ZT?
N a. 26°25.0'N Y b. 26°27.6'N N c. 26°29.8'N N d. 26°32.0'N 813: On 7 November , your 0830 zone time fix gives you a position of LAT 27°36.0'N, LONG 162°19.0'W. Your vessel is on course 289°T and your speed is 19.0 knots. Local apparent noon (LAN) occurs at 1138 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'. What is the latitude at 1200 ZT?
N a. 27°55.1'N N b. 27°57.2'N Y c. 27°59.5'N N d. 28°01.9'N 1128: How far is it to the Hernando Desoto Bridge in Memphis, TN?
N a. 980.8 miles N b. 736.6 miles N c. 312.3 miles Y d. 218.1 miles 1181: On 4 January , your 0800 zone time DR position is LAT 25°25.0 S, LONG 16°09.0'W. Your vessel is on course 290°T at a speed of 13.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1157 N b. 1205 N c. 1209 Y d. 1213 1190: On 12 February , your 0930 zone time DR position is LAT 25°20.0'N, LONG 30°40.0'W. Your vessel is on course 135°
T at a speed of 11.2 knots. What is the zone time of local apparent noon (LAN)?
N a. 1210 Y b. 1215 N c. 1220 N d. 1224 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 1237: At 1118, on 24 May, you pass Natchez Gage and estimate the current will average 3.0 mph for the remainder of the time on the Mississippi River. What is your ETA at Cairo, IL if you continue to turn for 10 mph?
N a. 0840, 26 May N b. 2218, 26 May Y c. 2339, 27 May N d. 0339, 28 May 1304: 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 N c. 1113 on 16 May Y d. 1757 on 16 May 1681: On 8 December , in DR position LAT 21°56.1'S, LONG 17°21.6'E you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 240.5°psc. The chronometer reads 05h 27m 21s and is 00m 47s fast. Variation in the area is 3.3°E. What is the deviation of the standard magnetic compass?
N a. 1.5°W N b. 0.3°W N c. 0.6°E Y d. 1.5°E 1950: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical
clearance as you pass under the Greenville Highway Bridge?
N a. 44.4 feet N b. 54.2 feet Y c. 65.4 feet N d. 75.4 feet 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 2702: You are underway on course 241°T at a speed of 18.2 knots.
You sight a daymark bearing 241°T at a radar range of 3.9 miles at 1006. If you change course at 1009, what is the course to steer to leave the daymark abeam to starboard at 1.0 mile?
N a. 218°T Y b. 222°T N c. 257°T N d. 260°T 2718: What organization has an installation at the uppermost end of Carthage Revetment?
N a. City of Natchez (waterfront) Y b. River Cement Co. N c. J.M. Jones Lumber N d. International Paper Co. 3095: If the pitch of the propeller is 21.3 feet, and the revolutions per day are 126,214, calculate the day's run allowing 4% positive slip.
Y a. 424.5 miles N b. 442.1 miles N c. 459.9 miles N d. 477.3 miles 3621: Your vessel is steering course 216° per standard magnetic compass, variation for the area is 9°W, and deviation is 2°E. The wind is from the east, producing a 5° leeway. What true course are you making good?
N a. 204°T Y b. 214°T N c. 223°T N d. 227°T 4014: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°W. The variation is 8°W. Find the deviation on a true heading of 157°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 354° 122.5° - 114° 239.5° - 234°
030.5° - 024° 152.0° - 144° 269.0° - 264°
061.5° - 054° 181.0° - 174° 298.0° - 294°
092.0° - 084° 210.0° - 204° 327.5° - 324°`
N a. 2.0°W Y b. 1.5°W N c. 1.0°W N d. 0.0° 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 11010: What is the maximum speed permitted in Clinton Harbor?
Y a. 6 mph N b. 8 mph N c. 10 mph N d. 12 mph 11304: At 1422 your GPS position is LAT 37°07.5'N, LONG 75°39.1'W. At 1549 your position is LAT 36°57.0'N, LONG 75°41.0'W. What was the course made good between the fixes?
N a. 185°T Y b. 188°T N c. 194°T N d. 198°T 11502: At 1016 your GPS position is LAT 41°07.6'N, LONG 71°38.5'W. At 1104 your position is LAT 41°00.4'N, LONG 71°29.4'W. What was the speed made good between the two positions?
N a. 10.9 knots N b. 11.7 knots Y c. 12.5 knots N d. 13.6 knots 11508: At 1014 you depart the entrance to Lake Montauk with light "1" close aboard. Your course is 066° per standard magnetic compass, and the speed is 8.6 knots. At 1232 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
N a. 8.2 knots Y b. 8.5 knots N c. 8.9 knots N d. 9.2 knots 12509: You are on course 027° per magnetic compass when you take the following bearings per magnetic compass: New Point Comfort Light "2" 253°
Horn Harbor Entrance Light HH 282°
Wolf Trap Light 348°
What is the position of the fix?
N a. LAT 37°19.4'N, LONG 76°09.5'W N b. LAT 37°19.4'N, LONG 76°09.8'W N c. LAT 37°19.7'N, LONG 76°10.3'W Y d. LAT 37°19.7'N, LONG 76°09.9'W 12605: You are on course 209° per standard magnetic compass when you take the following bearings: New Haven Light - 331.5°psc Branford Reef Light - 066.5°psc Old Field Point Light - 240.5°psc What is your position?
Y a. LAT 41°10.5'N, LONG 72°52.8'W N b. LAT 41°11.3'N, LONG 72°49.9'W N c. LAT 41°13.6'N, LONG 72°53.0'W N d. LAT 41°14.5'N, LONG 72°48.8'W 12608: You are on course 083° per standard magnetic compass when you take the following bearings: Branford Reef Light 344.5°psc Falkner Island Light 053.5°psc Mattituck Inlet Light 141.5°psc What is your position?
N a. LAT 41°10.4'N, LONG 72°43.0'W N b. LAT 41°09.6'N, LONG 72°44.9'W N c. LAT 41°08.4'N, LONG 72°43.7'W Y d. LAT 41°08.0'N, LONG 72°44.8'W 13004: At 1815 your position is LAT 41°05.5'N, LONG 72°47.3'W. You are making turns for 12.6 knots. What is your ETA at Plum Island Mid Channel Buoy PI (LAT 41°13.3'N, LONG 72°10.8'W)?
N a. 2019 N b. 2028 Y c. 2032 N d. 2038 15024: Which of the following statements regarding buoys on the Mississippi River is TRUE?
N a. The positions of river buoys can be found in the latest edition of Light List-Vol. V. Y b. Buoy positions on the chart are approximate. N c. The buoys are maintained on station year round. N d. The buoys do not shift positions due to permanent moorings. 15070: As you enter New London Harbor, you are steering on the entrance range. The lights are in line over the bow as you are heading 352°pgc. What is the gyro error?
Y a. 2°E N b. 0° N c. 1°W N d. 3°W 15212: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2001, you obtain the following information:
Chesapeake Channel Tunnel North Light - 131°pgc;
Thimble Shoal Light - 248°pgc
What were the set and drift between 1930 and 2001?
N a. 127° at 1.1 knot Y b. 127° at 0.5 knot N c. 307° at 1.1 knot N d. 307° at 0.5 knot 15260: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 4°
leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 101°psc N b. 108°psc N c. 110°psc Y d. 115°psc 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. 15359: Based on your running fix, you __________.
N a. have a head current Y b. have a following current N c. are being set to the north N d. are not affected by a current 15441: At buoy "CB" you change course to follow the inbound
traffic lane. What is the course to steer per gyro compass if you correct your heading for a current of 315° at 1.0 knot and allow 3° leeway for northeasterly winds?
N a. 297°pgc N b. 299°pgc Y c. 302°pgc N d. 305°pgc 15544: At 2310 your position is LAT 41°05.5'N, LONG 72°33.7'W and you change course to make good 068°T. A radar speed check using Twenty Eight Foot Shoal Buoy indicates your speed over the ground is 13.6 knots. At 2325 Horton Point Light bears 129°T. At 2341 the same light bears 194°T. What is the position of your 2341 running fix?
N a. LAT 41°07.9'N, LONG 72°25.9'W N b. LAT 41°08.3'N, LONG 72°25.8'W Y c. LAT 41°08.5'N, LONG 72°25.6'W N d. LAT 41°08.8'N, LONG 72°25.2'W 15609: From your 1715 fix, you steer 214°T at 12 knots. At 1800,
you take the following bearings:
Cape Charles Light bearing 296° true
Cape Henry light bearing 242° true
Your 1800 position is __________.
Y a. LAT 37°02.9'N, LONG 75°43.1'W N b. LAT 37°02.9'N, LONG 75°43.9'W N c. LAT 37°03.0'N, LONG 75°43.3'W N d. LAT 37°03.1'N, LONG 75°42.8'W 15713: What do the dotted lines around Goose Island and Kimberly Reef represent?
N a. Limiting danger N b. Breakers Y c. Depth contours N d. Tide rips 15715: Little Gull Island Light is __________.
N a. lighted only during daytime when the sound signal is in operation N b. maintained only from May 1 to Oct 1 Y c. lighted throughout 24 hours N d. obscured by trees from 253° to 352° 15746: Which nautical chart would you use to navigate into New London, CT?
N a. 13209 N b. 13211 Y c. 13212 N d. 13214 15809: At 0045, you obtain the following bearings:
Rocky Point lookout tower 072°T
Horton Point lighthouse 213°T
What were the set and drift between 0005 and 0045?
N a. 272°true, 0.9 knot N b. 272°true, 1.4 knots N c. 092°true, 0.9 knot Y d. 092°True, 1.4 knots 15956: The National Weather Service provides 24-hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel. The broadcasts may be found on __________.
N a. 202.35 MHz N b. 181.15 MHz Y c. 162.55 MHz N d. 147.45 MHz 16114: As you pass through the Chesapeake Bay Bridge and Tunnel,
you sight Trestle "A" in line bearing 198°pgc. What is the gyro error?
N a. 2°E N b. 0°E Y c. 2°W N d. 4°W 16464: At 0405, you increase speed. At 0500, your position is LAT 37°06.0'N, LONG 75°41.1'W. What is the approximate depth of the water under the keel?
N a. 66 feet (20.0 meters) N b. 62 feet (18.8 meters) N c. 54 feet (16.4 meters) Y d. 46 feet (13.9 meters) 16508: At 0700, your gyro alarm sounds. What course should you steer by the standard magnetic compass in order to maintain your original heading of 078°T?
N a. 062°psc N b. 080°psc N c. 090°psc Y d. 095°psc 16567: 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 mud with gravel surface