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 96: As you approach Kate Aubrey Towhead Light (mile 789.5 AHP), your searchlight will show what type of marking at the light?
Y a. Green diamond N b. Red and green banded square N c. Green triangle N d. Green square 119: What is the length of the trip?
N a. 405.8 miles N b. 553.0 miles Y c. 904.0 miles N d. 1136.8 miles 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 223: At 1920, Cape Henry Light bears 225°pgc, and Chesapeake Channel Tunnel North Light bears 288°pgc. If your heading is 268°T, what is the relative bearing of Chesapeake Light?
N a. 206° Y b. 213° N c. 215° N d. 220° 246: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° N b. 000° - 031° N c. 208° - 220° Y d. 000° - 041° 262: 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 __________.
Y a. 157°psc N b. 160°psc N c. 163°psc N d. 166°psc 276: At 1200, your position is 2.0 miles southwest of Bartlett Reef Light. Your heading is 075°T. Visibility is less than 0.2 mile in fog and rain. Which of the following signals is most likely to be from another vessel?
N a. Whistle from 125° relative N b. Bell from 350° relative Y c. Whistle from 075° relative N d. Horn from 330° relative 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 367: What is the distance from your 0731 fix to Wilmington, N.C. (LAT 34°14.0'N, LONG 77°57.0'W)?
N a. 486 miles N b. 402 miles N c. 363 miles Y d. 339 miles 437: At 0227, you are on course 087°T at 10 knots. What course per standard magnetic compass should you steer to make good your true course?
N a. 109°psc Y b. 105°psc N c. 102°psc N d. 099°psc 524: The two wavy magenta lines running to Green Hill Point represent __________.
N a. recommended approaches to Green Hill Point N b. a restricted anchorage area Y c. submarine cables N d. prohibited fishing areas 746: On 16 January , at 1804 zone time, you take a sextant observation of Polaris. Your vessel's DR position is LAT 36°12'N, LONG 124°36'W, and your sextant reads (hs) 37°16.4'. Your chronometer reads 02h 02m 12s, and is 01m 36s slow. Your height of eye is 60 feet, and the index error is 1.5' on the arc. From your observation of Polaris, what is the latitude of your vessel?
N a. 36°12.6'N N b. 36°14.4'N Y c. 36°17.9'N N d. 36°20.2'N 982: On 15 August , your 0512 zone time position was LAT 29°18.0'N, LONG 57°24.0'W. Your vessel was steaming on course 262°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0824 ZT. The chronometer read 00h 22m 24s and was slow 01m 34s. The observed altitude (Ho) was 38°16.7'. LAN occurred at 1204 zone time.
The observed altitude (Ho) was 74°58.0'. What was the longitude of your 1204 zone time running fix?
N a. LONG 59°52.0'W N b. LONG 59°54.0'W Y c. LONG 59°58.5'W N d. LONG 60°02.0'W 1110: On 19 November , your 0300 zone time DR position is LAT 19°23'N, LONG 151°37'E. You are on course 293°T at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0039
N a. LAT 19°38.5'N, LONG 150°41.6'E Y b. LAT 19°34.8'N, LONG 150°48.0'E N c. LAT 19°32.9'N, LONG 150°52.3'E N d. LAT 19°30.5'N, LONG 150°48.5'E 1146: The Linwood Bend revetment on the LMR extends from mile __________.
N a. 828.1-823.1 RDB N b. 831.7-829.4 RDB N c. 845.4-842.5 LDB Y d. 841.3-838.7 LDB 1270: At 0500 zone time, on 21 August , your DR position is LAT 47°00'N, LONG 125°15'W. You are steering 000°T at a speed of 9.8 knots. What is the zone time of sunrise?
Y a. 0525 N b. 0529 N c. 0531 N d. 0535 1679: On 13 October , your vessel's 1722 zone time DR position is LAT 27°36'S, LONG 136°16'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 266° per standard magnetic compass. Variation in the area is 2°W. The chronometer reads 08h 24m 19s and is 01m 43s fast. What is the deviation of the standard magnetic compass?
N a. 2.3°E Y b. 2.8°W N c. 4.8°E N d. 6.8°W 1897: On 22 June , your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 249°T at an observed altitude (Ho) of 52°50.7'. The chronometer reads 00h 23m 24s, and is 01m 32s slow. What star did you observe?
N a. Peacock N b. Schedar N c. Ankaa Y d. Altair 1916: On 14 January , your 1922 DR position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star bearing 250°T at an observed altitude (Ho) of 31°01.2'. The chronometer reads 03h 25m 43s, and is 03m 15s fast. Which star did you observe?
N a. Elnath Y b. Fomalhaut N c. Pollux N d. Markab 1957: At 1923, on September 21, you pass Bixby Towhead Light (mile 873.7 AHP). What was your average speed since leaving Cairo?
N a. 9.2 mph N b. 8.8 mph Y c. 8.5 mph N d. 7.2 mph 2014: On 16 October , evening twilight will occur at 1746 ZT, and your DR position will be LAT 28°43.2'N, LONG 60°29.8' W. Considering their magnitude and location, which of the following are the three best stars to select for a fix at star time?
Y a. Antares, Arcturus, Polaris N b. Deneb, Polaris, Vega N c. Antares, Deneb, Vega N d. Vega, Polaris, Enif 2170: On 22 July , at 0720 ZT, in DR position LAT 20°38.2'N, LONG 87°16.0'W, you observe the Moon's lower limb. The sextant altitude (hs) is 38°32.6, and the chronometer reads 01h 18m 14s. The chronometer is 01m 28s slow. The index error is 3.1' off the arc, and the height of eye is 68 feet. What is the azimuth (Zn) and intercept (a) of this sight from the assumed position?
N a. Zn 291.4°, a 5.2' A N b. Zn 111.4°, a 8.7' A Y c. Zn 248.6°, a 5.0' T N d. Zn 068.6°, a 6.5' T 2241: At 1318 ZT, on 10 September , in DR position LAT 24° 05.8' N, LONG 058° 08.3' E, you observe an amplitude of the Moon. The upper limb of the Moon is on the visible horizon and bears 254° psc. Variation is 2° W. What is the deviation?
N a. 8.0°W N b. 8.0°E Y c. 4.0°W N d. 4.0°E 2321: At 2350 on 23 June, you are at mile 610.5 AHP when you see about a mile ahead lights on the water near the left bank. What might you see when you come abreast of these lights?
N a. Privately maintained buoys at a yacht club N b. Government buoys marking the Hurricane Point dikes Y c. Barges moored at the Dennis Landing Terminal N d. A pipeline discharging dredge spoil 2594: What will be the current at Port Jefferson entrance at 0130 on December 5, 1983?
N a. 1.4 knots, flood N b. 1.4 knots, ebb N c. 0.8 knot, flood Y d. 0.8 knot, ebb 2685: You are steering 031°T, and a light is picked up dead ahead at a distance of 12.7 miles at 0017. You change course to pass the light 3.5 miles off abeam to starboard. If you are making 11 knots, what is your ETA at the position 3.5 miles off the light?
N a. 0118 N b. 0121 Y c. 0124 N d. 0127 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 2885: Your vessel is steering 194°T at 13 knots. At 0116 a light bears 243°T, and at 0147 the same light bears 267°T. What will be your distance off abeam?
N a. 11.2 miles N b. 11.6 miles Y c. 12.0 miles N d. 12.5 miles 2886: Your vessel is steering 074°T at 12 knots. At 0214 a light bears 115°T, and at 0223 the same light bears 135°T. What will be your distance off abeam?
N a. 2.4 miles Y b. 3.0 miles N c. 3.5 miles N d. 4.2 miles 3083: The speed necessary to reach port at a designated time is 18.7 knots. The propeller pitch is 24'03", and you estimate 3% positive slip. How many RPM's will the shaft have to turn?
Y a. 81 RPM N b. 87 RPM N c. 98 RPM N d. 104 RPM 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 3637: You desire to make good a true course of 347°. The variation is 11°E, magnetic compass deviation is 7°W, and gyrocompass error is 4°W. A north by east wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?
N a. 339°psc N b. 343°psc Y c. 347°psc N d. 351°psc 3753: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?
N a. 1°E N b. 1°W Y c. 4°E N d. 4°W 10100: Your GPS position is LAT 36°59.0'N, LONG 75°48.6'W. What is the course per standard magnetic compass to a position one mile south of Cape Charles Buoy "14" (which is positioned at LAT 37°07.4'N, LONG 75°41.0'W)?
Y a. 045°psc N b. 049°psc N c. 053°psc N d. 057°psc 10605: At 0620 your GPS position is LAT 41°01.8'N, LONG 72°48.40'W. You are steering course 274° per standard magnetic compass at a speed of 10 knots. At 0735 you fix your position by plotting several compass bearings on nearby known fixed objects. These result in a position of LAT 40°59.50'N, LONG 73°06.50'W. What were your set and drift?
N a. 304°T at 0.8 knot Y b. 276°T at 1.2 knots N c. 099°T at 0.5 knot N d. 094°T at 1.3 knots 12600: You are on course 243° per standard magnetic compass when you take the following bearings: Falkner Island Light 342°psc Mattituck Inlet Light 207°psc Horton Point Light 112°psc What is your position?
N a. LAT 41°05.9'N, LONG 72°32.7'W N b. LAT 41°05.7'N, LONG 72°31.8'W Y c. LAT 41°05.5'N, LONG 72°32.6'W N d. LAT 41°05.3'N, LONG 72°31.9'W 13807: The chart symbol depicted at LAT 40°58.5'N, LONG 72°43.4'W indicates a(n) __________.
N a. abandoned lighthouse N b. light ship N c. wreck with only its mast visible Y d. wreck showing a portion of the hull above the sounding datum 13901: The precautionary area southeast of Block Island refers to a __________.
Y a. recommended traffic lane N b. military exercise area N c. national marine refuge N d. dumping ground for hazardous wastes 14005: At 0800 your vessel is at mile 110 on the Columbia River. You are steaming in an easterly direction. At 0854 Lady Island Range is in line dead astern and Government Island Upper Range is in line on your port quarter. What speed have you averaged?
N a. 8.1 mph N b. 8.5 mph Y c. 9.4 mph N d. 10.2 mph 14104: You are approaching Bonneville Lock and Dam. Which FM-radio channel should be used to communicate with the lockmaster?
N a. 13 Y b. 14 N c. 15 N d. 16 14401: You are underway and steaming in an easterly direction on the Columbia River. Your vessel is positioned in the middle half of Cape Horn Channel and is abeam of Cape Horn Light. What should your fathometer read at this position, if the staff gauge at Portland reads 0 feet?
N a. 16 feet N b. 18 feet Y c. 22 feet N d. 24 feet 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 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 15825: 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. 15.9 feet N b. 33.2 feet Y c. 39.9 feet N d. 45.4 feet 16018: At 0550, engineering repairs are complete and speed is increased to 9.6 knots. At 0630, Falkner Island Light bears 023°pgc and Horton Point Light bears 097°pgc. From your 0630 fix you steer to make good a course of 086°T while turning for 9.6 knots. At 0700, Falkner Island Light bears 336.0°pgc and Horton Point Light bears 105.5°pgc. The radar range to the south tip of Falkner Island is 5.7 miles. Which statement is TRUE?
N a. Your course made good from 0630 to 0700 was 082°T. N b. The speed made good from 0630 to 0700 was 10.1 knots. N c. The current from 0630 to 0700 was 279°T at 0.6 knot. Y d. You are making good your intended speed. 16110: If you are making 8.3 knots over the ground, what is your ETA at the first turning point in York Spit Channel between buoys "29" and "30"?
N a. 0444 N b. 0456 N c. 0508 Y d. 0522 16118: You will enter waters governed by the International Rules when __________.
N a. you cross the territorial sea boundary line N b. abeam of buoy "CBJ" N c. you cross the boundary of the contiguous zone Y d. Cape Charles Light bears 022°T 16469: As you pass between trestle "B" and trestle "C" of the Chesapeake Bay Bridge - Tunnel, you sight along the trestle "C" when it is in line. The trestle bears 057° per standard magnetic compass while the vessel is heading 320°T. From this you know the __________.
Y a. vessel should be swung to check the deviation table N b. compass error is 12°W N c. deviation table is correct for that bearing N d. deviation is 10°W 16513: At 0748, you change course to 160°T. What loran reading can you follow to remain on this course?
Y a. 9960-W-14651.0 N b. 9960-W-14660.0 N c. 9960-Y-43852.0 N d. 9960-Y-43943.8