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.
93: Which light characteristics does Quaker Oats Light (mile 952.6) have?
N a. 1 red flash every four seconds N b. 2 green flashes every 5 seconds N c. 2 red flashes every 4 seconds Y d. 2 red flashes every 5 seconds 126: What is your clearance as you pass under the Vicksburg Highway 80 Bridge (mile 437.8 AHP). if the Vicksburg Gage reads 14.8 feet and the highest point on your tow boat is 44.5 feet?
N a. 36 feet N b. 42 feet Y c. 57 feet N d. 66 feet 248: You are southeast of Saybrook Breakwater Light passing Saybrook Bar Lighted Bell Buoy "8". This buoy marks __________.
N a. a sunken wreck N b. a bifurcation N c. the junction with the Connecticut River Y d. shoal water 269: If there is no current, what is the course per standard magnetic compass from your 0802 fix to the position 1.1 miles north of Falkner Island Light?
N a. 099° Y b. 095° N c. 068° N d. 064° 294: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
Y a. 12 knots N b. 10 knots N c. 8 knots N d. 6 knots 345: The characteristic of Branford Reef Light is __________.
N a. flashing red every 4 seconds N b. flashing red every 3 seconds N c. flashing yellow every 4 seconds Y d. flashing white every 6 seconds 357: If the visibility is 5 miles and you are in the red sector, at what distance off should you sight Cape Henry Light?
Y a. 09 miles N b. 11 miles N c. 13 miles N d. 15 miles 416: A vessel at LAT 18°54'N, LONG 73°00'E, heads for a destination at LAT 13°12'N, LONG 54°00'E. Determine the true course and distance by Mercator sailing.
N a. 247°T, 1161 miles N b. 250°T, 1172 miles Y c. 253°T, 1154 miles N d. 256°T, 1136 miles 469: Determine the great circle initial course from LAT 37°12.6'S, LONG 73°58.0'W to LAT 10°33.0'S, LONG 142°08.0'E.
Y a. 223°T N b. 253°T N c. 287°T N d. 317°T 473: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 22°36.0'N, LONG 128°16.0'E is 7801 miles and the initial course is 318°45' T. The latitude of the vertex is 49°20.6'N. What is the longitude of the vertex?
N a. 156°43'W Y b. 162°41'W N c. 159°32'W N d. 161°18'W 552: If the visibility is 10 miles, what is the earliest time you can expect to see New Haven Light?
N a. 0500 N b. 0508 N c. 0514 Y d. You will not sight the light. 654: In planning a North Pacific voyage, you wish to steam the minimum distance from LAT 48°30'N, LONG 124°45'W to LAT 44°00'N, LONG 150°00'E, while remaining south of 51°N latitude. Which track meets these requirements? (Use gnomonic tracking chart WOXZC 5270)
N a. A Mercator sailing from departure to the mid-longitude at 51°N, thence great circle to arrival N b. A great circle between departure and arrival with parallel sailing between the longitudes where the great circle intersects 51°N N c. A great circle tangent to 51°N from departure to the mid-longitude then a great circle to arrival Y d. A great circle from departure to LAT 51°N, LONG 148°W, parallel sailing to LAT 51°N, LONG 171°W, then a great circle to arrival 674: What are the dimensions of the Port Allen Lock at Baton Rouge, LA?
N a. 75 feet x 1188 feet Y b. 84 feet x 1188 feet N c. 84 feet x 1180 feet N d. 75 feet x 1180 feet 840: On 29 October , in DR position LAT 41°12.0'N, LONG 50°18.9'W, you take an ex-meridian observation of the Sun's lower limb, near upper transit. The chronometer time of the sight is 03h 21m 12s, and the chronometer error is 01m 50s slow. The sextant altitude (hs) is 34°54.2'. The index error is 2.0' on the arc, and your height of eye is 45 feet. What is the latitude at meridian transit?
N a. 41°12.0'N Y b. 41°16.0'N N c. 41°20.2'N N d. 41°23.6'N 1140: At 0921, on 24 May, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 10.0 mph, what was the current since departure?
N a. 3.4 mph N b. 2.0 mph Y c. 1.7 mph N d. 1.4 mph 1148: You complete changing out your tow and get underway enroute Ark City Tank Storage (mile 554.0 AHP) to deliver the tank barges. What is the distance you must travel from Cairo Point Light?
N a. 202.1 miles Y b. 400.7 miles N c. 554.2 miles N d. 605.8 miles 1180: On 3 May , your 1009 zone time DR position is LAT 30°01.0'N, LONG 123°15.0'W. Your vessel is on course 330°T at a speed of 8.6 knots. What is the zone time of local apparent noon (LAN)?
N a. 1206 N b. 1208 Y c. 1211 N d. 1214 1191: On 14 October , your 0800 ZT DR position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1142 N b. 1148 N c. 1152 Y d. 1156 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 1466: On 21 April , your 1542 zone time DR position is LAT 28°54.0'S, LONG 19°07.0'W. At that time, you observe the Sun bearing 299°psc. The chronometer reads 04h 44m 11s, and the chronometer error is 01m 54s fast. The variation is 3°E. What is the deviation of the standard compass?
Y a. 0.3°W N b. 0.4°E N c. 2.7°W N d. 2.7°E 1724: What is the mile point of the Natchez, MS Gage?
N a. 228.4 AHP N b. 265.4 AHP N c. 302.4 AHP Y d. 363.3 AHP 1737: At 1227, on 19 October, you pass under the Greenville Highway Bridge (mile 531.3 AHP). What speed must you average to arrive at Jimmy Hawken Light (mile 663.5 AHP) at 1045 the following day?
N a. 5.2 mph N b. 5.6 mph Y c. 5.9 mph N d. 6.3 mph 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 1767: What is the vertical clearance of the Natchez-Vidalia Highway Bridge when the Natchez-Vidalia Highway Bridge Gage reads 23.4 feet?
Y a. 102.6 ft N b. 108.3 ft N c. 119.5 ft N d. 125.6 ft 1893: On 22 July , your 0442 DR position is LAT 26°35.6'N, LONG 22°16.7'W. You observe an unidentified star bearing 104°T at an observed altitude (Ho) of 9°55.7'. The chronometer reads 05h 39m 03s, and is 03m 14s slow. What star did you observe?
N a. Hamal Y b. Rigel N c. Menkar N d. Acamar 1917: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 054°T at an observed altitude (Ho) of 07°52.1'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. What star did you observe?
N a. Elnath N b. Fomalhaut Y c. Pollux N d. Markab 1922: On 17 March , your 1845 DR position is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing 320°T at an observed altitude (Ho) of 50°02.9'. The chronometer reads 10h 47m 49s, and is 1m 54s fast. What star did you observe?
N a. Capella Y b. Mirfak N c. Pollux N d. Rigel 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 2021: On 29 April , your 0300 ZT DR position is LAT 28°39'N, LONG 168°03'E. You are on course 108°T at a speed of 22 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
Y a. Moon, Alpheratz, Polaris N b. Deneb, Dubhe, Zubenelgenubi N c. Venus, Polaris, Arcturus N d. Moon, Altair, Sabik 2052: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 2086: Ar your current speed of 22 knots you only have enough fuel remaining to travel 440 miles. You must travel 618 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 17.8 Y b. 18.6 N c. 19.4 N d. 20.2 2088: At your current speed of 19 knots you only have enough fuel remaining to travel 265 miles. You must travel 731 miles to reach your destination. What should you reduce your speed (knots) to in order to reach your destination?
N a. 13.8 N b. 12.6 Y c. 11.4 N d. 10.2 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 2275: You observe the lower limb of the Sun at a sextant altitude (hs) of 24°00.7' on 10 January . The index error is 2.6' off the arc. The height of eye is 55 feet. What is the observed altitude (Ho)?
N a. 24°07.4' N b. 24°08.9' Y c. 24°10.2' N d. 24°11.8' 2282: You observe the lower limb of the Sun at a sextant altitude (hs) of 42°44.0' on 22 June . The index error is 0.8' off the arc. The height of eye is 70 feet (21.3 meters). What is the observed altitude (Ho)?
N a. 42°19.8' N b. 42°21.7' Y c. 42°51.7' N d. 42°54.2' 2534: Your company wants to know at what time you will be arriving at the fleeting area at Sycamore Chute Light (mile 740.3 AHP) in Memphis, TN You are making turns for 9.0 mph and you estimate the average current at 2.2 mph. Figuring the distance and time from Hole in the Wall Lt. (mile 373.4 AHP), what is your ETA at Sycamore Chute Lt.?
N a. 0557, April 19th N b. 1045, April 19th Y c. 1242, April 19th N d. 1733, April 19th 2778: What company does NOT have a marine facility along the river bank in Helena (mile 658 to 665 AHP)?
N a. Texas Eastern Pipeline Co. N b. Helena Port Terminal, Inc. N c. Arkansas Power & Light Co. Y d. Helena Grain Co. 3606: You are steering 154°pgc. The wind is southwest causing 4° leeway. The gyro error is 3°E, variation is 11°W and deviation is 7°E. What is the true course made good?
Y a. 153°T N b. 158°T N c. 161°T N d. 164°T 3628: Your vessel is steering course 352°psc, variation for the area is 11°E, and deviation is 9°W. The wind is from the northeast, producing a 1° leeway. What true course are you making good?
N a. 349°T N b. 351°T Y c. 353°T N d. 355°T 10103: Your GPS position is LAT 37°01.5'N, LONG 75°31.7'W. What is the course per standard magnetic compass to Chesapeake Light?
Y a. 243° N b. 240° N c. 237° N d. 231° 10900: The abandoned lighthouse west of Cape Henry Light is __________.
N a. painted black and white N b. a low mound of rubble Y c. a gray, pyramidal structure N d. a steel skeleton structure 11402: At 1018 your position is LAT 41°14.4'N, LONG 72°07.2'W. At 1036 your vessels position is LAT 41°13.1'N, LONG 72°16.1'W. What was your true course and speed made good?
Y a. 259° at 22.6 knots N b. 245° at 23.1 knots N c. 079° at 22.8 knots N d. 065° at 25.5 knots 11506: 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 1238 your position is LAT 41°20.0'N, LONG 71°40.0'W. What is the speed made good?
Y a. 8.2 knots N b. 8.6 knots N c. 8.9 knots N d. 9.2 knots 12103: You sight Wolf Trap Light in line with New Point Comfort Spit Light "2" bearing 048° per standard magnetic compass. You are on course 203°psc. Based on this, you know __________.
N a. the compass error is 12°W N b. the deviation is 9°W Y c. that the deviation table is in error N d. the deviation is 3°E for bearings of 048° per standard magnetic compass 13107: At 1103 your position is LAT 41°12.5 N, LONG 71°37.4 W. What is your ETA at the west gap of Point Judith Harbor of Refuge if you make good 11.3 knots?
N a. 1144 N b. 1154 Y c. 1159 N d. 1205 15012: At 2020, you obtain a fix using the following information:
9960-X-27112
9960-Y-41432
Cape Charles Lighted Bell Buoy "14" bears 333°pgc. Your longitude is __________.
N a. 75°38.9'W N b. 75°39.1'W N c. 75°39.3'W Y d. 75°40.5'W 15141: At 2146 your position is 40°51.3'N, 71°59.2'W. If your engine speed has been 13 knots, what were the set and drift of the current you encountered since your 2100 position?
N a. 115°true at 1.1 knots N b. 115°true at 1.5 knots N c. 295° true at 1.1 knots Y d. 295°true at 1.5 knots 15623: At 2126, you pass Morganza Bend Light (mile 278.4 AHP).
At 0122, 4 January, you pass Red River Landing Gage (302.4 AHP). You have been turning for 7.5 mph. What is the current?
Y a. 1.4 MPH N b. 1.8 MPH N c. 2.7 MPH N d. 6.2 MPH 15661: At 0727, the cupola on Fishers Island is in line with Latimer Reef Light bearing 024°pgc. Based on this, the gyro error is __________.
N a. 2°E N b. 1°E N c. 0° Y d. 3°W 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 15815: From your 0130 position, you take the following radar ranges:
Mattituck Inlet Light @ 4.6 nm
Falkner Island Light @ 10.75
What is the latitude and longitude of the fix?
N a. LAT 41°00.8'N, LONG 72°40.8'W N b. LAT 41°01.2'N, LONG 72°40.4'W N c. LAT 41°01.6'N, LONG 72°40.0'W Y d. LAT 41°02.0'N, LONG 72°39.5'W 15820: You are northwest of Port Jefferson Harbor steering 242° per standard magnetic compass. As you continue westward, you see that the Port Jefferson Range Front Light and Rear Light come into line. If the deviation table is correct, the bearing of the range should be __________.
N a. 140°psc N b. 146°psc Y c. 157°psc N d. 160°psc 16009: The maximum ebb current at a location 4.3 miles south of Stratford Point will occur at 0413. The predicted current will be 1.0 knot at 075°. What will be your course made good if you steer 082°T at 8 knots?
Y a. 081°T N b. 083°T N c. 085°T N d. 087°T 16241: At 2129 Cape Charles Light bears 253°T, Hog Island Lighted Bell Buoy "12" bears 351°T, and Cape Charles Lighted Bell Buoy "14" bears 230°T. Which statement is TRUE?
N a. The fathometer reads about 62 feet (18.9 meters). N b. The bottom is hard sand and oysters. N c. You are to seaward of the contiguous zone. Y d. You are governed by the International Rules of the Road. 16616: At 0130, your position is LAT 41°09.3'N, LONG 72°46.9'W when you change course to 086°T. If you make good 086°T,
what is the closest point of approach to Twenty-Eight Foot Shoal Lighted Buoy?
N a. 0.7 mile Y b. 0.9 mile N c. 1.1 miles N d. 1.2 miles 16707: Point Judith Harbor of Refuge __________.
N a. is used mostly by towing vessels N b. has a maximum depth of 14 feet at MHW N c. is easily accessible in heavy southerly seas Y d. is entered through the East Gap or the West Gap