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.
88: What is the vertical clearance between the highest point of your towboat, if it is 58 feet above the water, and if the Natchez Gage reads 28.13 feet when passing under the Natchez Upper Highway Bridge?
N a. 45.4 feet Y b. 39.3 feet N c. 33.2 feet N d. 15.9 feet 206: At 1850, you obtain the following bearings and distances:
Montauk Point 189°pgc 8.7 miles
Watch Hill Light 340°pgc 5.7 miles
What true course did you make good between 1830 and 1850?
Y a. 293°T N b. 297°T N c. 299°T N d. 305°T 255: From your 0130 position, you change course to adjust for set and drift, and you later obtain the following lbearings:
Mattituck Inlet Light bearing 104.5°true
Falkner Island Light bearing 001°true
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 Y c. LAT 41°02.0'N, LONG 72°39.5'W N d. LAT 41°02.6'N, LONG 72°39.0'W 308: A vessel at LAT 20°00'N, LONG 107°30'W is to proceed to LAT 24°40'N, LONG 112°30 W. What is the course and distance by mid-latitude sailing?
N a. 314.0°T, 389.0 miles Y b. 315.3°T, 394.0 miles N c. 317.2°T, 397.0 miles N d. 318.3°T, 399.0 miles 403: You receive a distress call from a vessel reporting her position as LAT 30°21'N, LONG 88°34'W. Your position is LAT 24°30'N, LONG 83°00'W. Determine the true course and distance to the distress scene by Mercator sailing.
N a. 317°T, 470 miles Y b. 320°T, 460 miles N c. 322°T, 455 miles N d. 324°T, 460 miles 477: The great circle distance from LAT 08°50.0'N, LONG 80°21.0'W to LAT 12°36.0'N, LONG 128°16.0'E is 8664 miles, and the initial course is 306.6°T. Determine the latitude of the vertex.
Y a. 37°30.2'N N b. 37°39.6'N N c. 37°48.2'N N d. 37°53.6'N 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 672: What is the total length of the trip?
Y a. 922.3 miles N b. 985.3 miles N c. 1155.8 miles N d. 1187.3 miles 738: On 24 September , your 1841 zone time DR position is LAT 25°15.0'N, LONG 129°34.5'E. At that time you observe Polaris with a sextant altitude (hs) of 25°20.8'. The chronometer time of the sight is 09h 38m 12s, and the chronometer error is 03m 12s slow. The index error is 4.3' off the arc, and the height of eye is 52.0 feet. What is your latitude by Polaris?
N a. 24°28.4'N N b. 25°16.0'N Y c. 25°37.6'N N d. 25°42.3'N 824: On 30 October , an ex-meridian altitude of the Sun's lower limb at upper transit was observed at 1144 ZT. Your DR position is LAT 22°42.0'S, LONG 137°16.0'W, and your sextant altitude (hs) is 80°59.4'. The index error is 2.5' off the arc, and your height of eye is 42.5 feet. The chronometer time of the observation is 08h 46m 15s, and the chronometer error is 02m 12s fast. Find the latitude at meridian transit from the ex-meridian observation.
Y a. LAT 22°31.4'S N b. LAT 22°42.3'S N c. LAT 22°46.2'S N d. LAT 23°00.9'S 1175: On 12 February , your 0900 zone time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course 093°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1237 N b. 1233 N c. 1230 N d. 1226 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 1279: At 0327 ZT, on 29 May , your DR position is LAT 25°00'N, LONG 64°15'W. You are steering 270°T at a speed of 13.6 knots. What is the zone time of sunrise?
N a. 0521 Y b. 0529 N c. 0536 N d. 0548 1413: 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 1675: On 28 November , your vessel's 0652 DR position is LAT 37°30'N, LONG 124°12'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 103° per standard magnetic compass. Variation in the area is 16.3°E. The chronometer reads 02h 54m 18s and is 02m 06s fast. What is the deviation of the compass?
Y a. 2.5°W N b. 3.0°W N c. 2.0°E N d. 3.0°E 1702: You are upbound approaching Springfield Bend Lt. (mile 244.8 AHP) downriver from Profit Island. Which of the following statements is TRUE?
Y a. Profit Island Chute is closed to navigation. N b. Tow length must not exceed 600 feet to use Profit Island Chute. N c. Tows must navigate toward left ascending bank when passing Profit Island Chute. N d. Profit Island Chute is open to navigation and is a shortcut for single barge tows. 1746: The Crooked River empties into which river?
Y a. Missouri N b. Mississippi N c. Tennessee N d. Ohio 2055: You estimate the current at 3.0 mph. What is the speed over the ground?
Y a. 3.5 mph N b. 4.5 mph N c. 7.5 mph N d. 9.5 mph 2120: At 1502 ZT, on 4 August , in DR position LAT 11° 21.6' S, LONG 088° 14.3' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 289° psc. The variation is 15° W. What is the deviation?
N a. 1.1°E Y b. 1.1°W N c. 1.9°E N d. 1.9°W 2238: At 1430 ZT, on 16 April , in DR position LAT 34° 03.8' N, LONG 061° 02.5'W, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 095.2°psc. The variation is 12°W. What is the deviation?
N a. 1.7°W N b. 1.7°E N c. 1.9°W Y d. 1.9°E 2680: While on course 321°pgc with a 1°W gyro error, you pick up a buoy on radar bearing 001° relative at 5.2 miles. What will be the course to pass the buoy by 1 mile abeam to starboard, if you change course when the buoy is 4.5 miles away?
N a. 305°T Y b. 310°pgc N c. 316°T N d. 336°pgc 2884: Your vessel is steering 238°T at 11 knots. At 2304 a light bears 176°T, and at 2323 the same light bears 155°T. What will be your distance off abeam?
N a. 7.5 miles N b. 8.0 miles Y c. 8.5 miles N d. 9.0 miles 3094: If the pitch of the propeller is 26.7 feet, and the revolutions per day are 131,717, calculate the day's run allowing 4% negative slip.
N a. 555.2 miles N b. 578.4 miles Y c. 601.6 miles N d. 649.4 miles 3096: If the pitch of the propeller is 20.1 feet, and the revolutions per day are 118,178, calculate the day's run allowing 6% negative slip.
N a. 367.2 miles N b. 381.6 miles N c. 398.4 miles Y d. 414.1 miles 3276: While steaming at 15 knots, your vessel burns 326 bbls of fuel per day. What will be the rate of fuel consumption if you decrease speed to 12.2 knots?
Y a. 175 bbls/day N b. 215 bbls/day N c. 277 bbls/day N d. 300 bbls/day 3464: You are underway on course 315°T at 14 knots. The current is 135°T at 1.9 knots. What is the course being made good?
N a. 130°T Y b. 315°T N c. 317°T N d. 322°T 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 11503: At 1016 your GPS position is LAT 41°07.6'N, LONG 71°37.9'W. At 1104 your position is LAT 41°00.2'N, LONG 71°29.4'W. What was the true course made good between the two positions?
N a. 134°T Y b. 139°T N c. 143°T N d. 145°T 11808: What is the true course to steer from a position 2 miles due south of Branford Reef Light to Horton Pt. Light, if the set and drift of the current are 247°T at 3 knots, and a southwesterly wind will cause 3° of leeway? (Your engines are making turns for 10 knots.)
Y a. 104°T N b. 100°T N c. 095°T N d. 087°T 12308: You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 094° per standard magnetic compass. If your vessel was heading 207° per standard magnetic compass at the time, which of the following is TRUE?
Y a. The deviation table is correct for that heading. N b. The deviation by observation is 3°E. N c. The compass error is 12°W. N d. You should subtract 18° from all bearings of 094°. 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 13505: What soundings are indicated by a blue tint on this chart?
N a. 30 fathoms or more Y b. 30 feet or less N c. 30 feet or more N d. 30 fathoms or less 15015: At 2100, Cape Charles Light bears 321°pgc, and Cape Henry Light bears 247°pgc. Your latitude is __________.
N a. 37°00.0'N N b. 36°59.7'N Y c. 36°59.4'N N d. 36°59.1'N 15114: Your 1900 position is LAT 37°12.9'N, LONG 76°13.5'W. You change course to 317°pgc and slow to 8.0 knots. What is the course per standard magnetic compass?
N a. 331°psc Y b. 329°psc N c. 311°psc N d. 309°psc 15116: According to your track line, how far off New Point Comfort Spit Light "4" will you be when abeam of this light?
Y a. 0.9 mile N b. 1.2 miles N c. 1.5 miles N d. 1.8 miles 15238: At 0930 you obtain a position from the following information: Race Rock Light bears 110°T at a range of 1.4 miles, and Goshen Point bears 330°T at a range of 3.3 miles. What are your present latitude and longitude?
N a. 41°16.0'N, 72°09.5'W Y b. 41°15.1'N, 72°04.6'W N c. 41°17.4'N, 72°06.0'W N d. 41°14.6'N, 72°03.0'W 15242: From your 1155 position, you steer a course of 282°T at a speed of 9.5 knots. You obtain the following bearings:
1205: Falkner Island Light bears 318°T
1225: Falkner Island Light bears 355°T
Your 1225 running fix is __________.
N a. north of your intended track N b. 3.1 miles SSW of Falkner Island Light N c. ahead of the DR position Y d. south of your intended track 15306: Your 0200 position is LAT 37°23.5'N, LONG 76°09.2'W. Your speed is 8 knots, and your course is 095°T. Which statement is TRUE?
N a. The depth of the water in your vicinity is about 38 to 40 fathoms (69.1 meters to 72.7 meters). Y b. You are less than a mile from a sunken wreck which could interfere with your tow. N c. The closest major aid to navigation is New Point Comfort Light. N d. You will pass through a disposal area on your present course. 15312: You arrive at the rendezvous point, secure the tow, and head back southward. At 1200, you take the following bearings:
Cape Charles Light bearing 240.5° true
Sand Shoal Inlet South Light bearing 289° true
What is your 1200 position?
N a. LAT 37°10.5'N, LONG 75°33.0'W N b. LAT 37°12.0'N, LONG 75°35.0'W Y c. LAT 37°15.0'N, LONG 75°37.5'W N d. LAT 37°19.0'N, LONG 75°40.5'W 15657: What was the course made good from 0630 to 0654?
N a. 078°T Y b. 082°T N c. 086°T N d. 090°T 15969: What is the height above water of New Point Comfort Spit Light "2"?
N a. 6 feet (1.8 meters) N b. 15 feet (4.6 meters) Y c. 18 feet (5.5 meters) N d. 24 feet (7.3 meters) 16312: Assuming no current, at what time can you expect to be abeam of Townshend Ledge Lighted Buoy?
N a. 0859 N b. 0902 N c. 0905 Y d. 0910 16316: At 0900, the current is flooding in a direction of 350°T at 1.2 knots. If your engines are turning RPMs for 9 knots, which course should you steer per standard magnetic compass to make good a course of 297° true?
Y a. 302°psc N b. 311°psc N c. 317°psc N d. 319°psc 16320: Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?
N a. 007°psc N b. 014°psc Y c. 021°psc N d. 026°psc 16409: At 0337, fog closes in and you anchor under the following radar ranges and bearing.
South tip of Watch Hill Point 3.0 miles
East point of Fishers Island 1.4 miles
Latimer Reef Light 331°T
What is the approximate depth of water at your anchorage?
N a. 83 feet (25.2 meters) Y b. 100 feet (30.3 meters) N c. 120 feet (36.4 meters) N d. 135 feet (40.9 meters) 16410: By 1015, visibility has increased to 5.0 miles and you can see Fishers Island. Fishers Island has __________.
N a. low and sandy beaches with salt ponds and marsh grass N b. sheer cliffs rising from the sea to a high, flat plateau N c. barren, rocky hills with prominent sandy beaches Y d. sparsely wooded hills and is fringed with shoals to the south 16614: Branford Reef is __________.
Y a. completely submerged at all stages of the tide N b. a hard sand shoal N c. surrounded by rocks awash at low water spring tides N d. a small, low, sandy islet surrounded by shoal water