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 60: What town is located at mile 389.8 AHP?
N a. Whitehall N b. Belmont Y c. Rodney N d. St. James 172: 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)?
Y a. 2029 N b. 2032 N c. 2035 N d. 2037 270: At 0830, you wish to get the latest weather forecasts for the Falkner Island area. On what frequency would you set your FM radio for this information?
N a. 2181 kHz Y b. 162.40 Mhz N c. 156.80 Mhz N d. 156.65 Mhz 306: A vessel steams 640 miles on course 047°T from LAT 34°45'N, LONG 140°00'E. What are the latitude and longitude of the point of arrival by mid-latitude sailing?
N a. LAT 41°57'N, LONG 150°02'E Y b. LAT 42°01'N, LONG 149°57'E N c. LAT 42°06'N, LONG 149°53'E N d. LAT 42°09'N, LONG 149°50'E 321: At 2200, you are in position LAT 36°57.5'N, LONG 76°02.5'W. You intend to travel up the Thimble Shoals auxiliary Channel to Hampton Roads. According to the Coast Pilot, what is the depth of the auxiliary channel on either side of the main channel?
N a. 45 feet (13.7 meters) N b. 36 feet (11.0 meters) Y c. 32 feet (9.8 meters) N d. 28 feet (8.5 meters) 494: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. N b. Alter your course to the right. N c. Slow to 8.5 knots. Y d. Alter your course to the left. 553: At 0507, Stratford Shoal Middle Ground Light bears 208°pgc. What is the position of your 0507 running fix?
N a. LAT 41°04.6'N, LONG 73°04.7'W N b. LAT 41°04.8'N, LONG 73°04.8'W N c. LAT 41°04.8'N, LONG 73°04.9'W Y d. LAT 41°05.1'N, LONG 73°05.1'W 563: At 0705, the gyro loses power. At 0715, you are on course 092° per standard magnetic compass (psc) when you take the following bearings: Falkner Light bears 356°psc, Horton Point Light bears 123°psc, and Kelsey Point Breakwater Light bears 048°psc. What is the position of your 0715 fix?
N a. LAT 41°06.7'N, LONG 72°36.0'W Y b. LAT 41°07.0'N, LONG 72°36.2'W N c. LAT 41°07.2'N, LONG 72°36.4'W N d. LAT 41°07.4'N, LONG 72°36.4'W 623: You are on a voyage from Baltimore, MD, to Seattle, WA. The distance from pilot to pilot is 5960 miles. The speed of advance is 16.0 knots. You estimate 16 hours for bunkering at Colon, and 12.0 hours for the Panama Canal transit. If you take departure at 0824 hours (ZD +5), 18 November, what is your ETA (ZD +8) at Seattle?
N a. 1654, 5 December N b. 1354, 5 December Y c. 2154, 4 December N d. 1354, 4 December 748: On 7 May , you observe Polaris for latitude at 0303 ZT. Your DR position is LAT 56°35.4'N, LONG 05°38.9'W. The sextant altitude is 56°11.1'. The height of eye is 36', and the index error is 3.3' off the arc. What is the latitude at the time of the sight?
N a. 56°24.6'N N b. 56°32.6'N N c. 56°35.0'N Y d. 56°38.7'N 986: At 0900 zone time, on 23 September , your DR position is LAT 28°48.0'N, LONG 153°11.5'W. You are steering course 257°T at a speed of 18.0 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1020 running fix? NP-0001
N a. 28°43.3'N, 153°32.1'W N b. 28°46.4'N, 153°34.6'W Y c. 28°49.1'N, 153°37.0'W N d. 28°52.8'N, 153°30.6'W 1104: On 19 November , your 0200 zone time DR position is LAT 20°29.0'N, LONG 150°21.3'E. You are on course 136°T at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix. NP-0033
N a. LAT 19°30.1'N, LONG 151°06.0'E N b. LAT 19°31.7'N, LONG 151°04.9'E Y c. LAT 19°33.0'N, LONG 151°10.0'E N d. LAT 19°35.8'N, LONG 151°13.6'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 1344: At 2142, on January 3, you pass Sebastapol Light (mile 283.3 AHP). At 0137, January 4, you pass Fort Adams Light(mile 311.4 AHP). You have been turning for 9.0 mph. What was the current?
N a. 4.2 mph N b. 3.3 mph N c. 2.7 mph Y d. 1.8 mph 1422: What organization has an installation at the uppermost end of Carthage Revetment?
N a. U.S. Coast Guard Y b. River Cement Co. N c. U.S. Army Corps. of Engineers N d. International Paper Co. 1457: On 25 August , your 1926 zone time DR position is LAT 24°17.0'S, LONG 05°47.0'W. At that time, you observe Fomalhaut bearing 117°psc. The chronometer reads 07h 26m 52s, and the chronometer error is 00m 15s fast. The variation is 1.5°E. What is the deviation of the standard magnetic compass?
N a. 0.2°W N b. 0.4°E N c. 1.3°W Y d. 2.8°W 1471: On 21 February , your 0823 zone time DR position is LAT 21°44.0'S, LONG 80°14.0'E. At that time, you observe the Sun bearing 096°psc. The chronometer reads 03h 25m 19s, and the chronometer error is 01m 52s fast. The variation is 5°W. What is the deviation of the standard magnetic compass?
N a. 2.2°E Y b. 4.7°W N c. 5.7°E N d. 6.3°W 1499: On 16 June , your 0430 zone time DR position is LAT 29°24.0'S, LONG 36°16.0'E. At that time, you observe Vega bearing 341.0°psc. The chronometer reads 02h 32m 06s, and the chronometer error is 01m 54s fast. The variation is 20.5°W. What is the deviation?
N a. 3.2°E N b. 3.2°W Y c. 2.4°W N d. 2.8°E 1545: You are downbound, passing by Warfield Point Lt. (mile 537 AHP), when you observe on your Mississippi River map several black lines extending into the river from the bank. These indicate __________.
N a. revetments N b. weirs N c. fleeting areas Y d. dikes 1669: On 19 June , your vessel's 0523 ZT DR position is LAT 25°12.0'N, LONG 123°14.0'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 052.0° per standard compass. Variation in the area is 15°E. The chronometer reads 01h 21m 58s and is 01m 18s slow. What is the deviation of the standard compass?
N a. 1.4°E N b. 1.4°W N c. 1.7°W Y d. 3.3°W 1684: You are passing Putney Lt. (mile 943.6 AHP). The gray shaded areas alongside the river represent __________.
N a. levees N b. weirs N c. dikes Y d. revetments 1754: At 0715, on 24 May, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 8.0 mph, what has been the average current since you left Baton Rouge?
N a. 1.0 mph N b. 1.4 mph Y c. 3.8 mph N d. 4.4 mph 1908: On 22 March , your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 315°T at an observed altitude (Ho) of 66°01.2'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. What star did you observe?
N a. Regulus N b. Menkar Y c. Rigel N d. Alphard 1926: On 23 September , your 1836 DR position is LAT 25°18'S, LONG 162°36'E. You observe an unidentified star bearing 022°T at an observed altitude (Ho) of 13°16'. The chronometer reads 07h 34m 12s, and is 01m 54s slow. What star did you observe?
N a. Antares Y b. Deneb N c. Achernar N d. Sirius 2154: On 30 June , at 0630 zone time, morning stars were observed, and the vessel's position was determined to be LAT 25°15.0'S, LONG 175°36.0'E. Your vessel is steaming at 16.0 knots on a course of 302°T. A sextant observation of the Sun's lower limb is made at 1015 zone time. The chronometer reads 10h 14m 38s, and the sextant altitude is 32°07.9'. The index error is 4.5' on the arc, and the chronometer error is 01m 25s slow. Your height of eye on the bridge is 58.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 035.3°T N b. 144.7°T N c. 186.5°T N d. 248.5°T 2182: On 18 August , at 0600 ZT, morning stars were observed, and the vessel's position was determined to be LAT 19°48'N, LONG 108° 34'W. Your vessel is steaming on course 166°T at a speed of 16 knots. An observation of the Sun's lower limb is made at 1036 ZT. The chronometer reads 05h 34m 48s and is slow 01m 24s. What is the computed altitude (Hc) and azimuth (Zn) for this 1036 ZT observation using the assumed position method?
N a. Hc 65°18.5', Zn 102.1° Y b. Hc 65°14.8', Zn 100.4° N c. Hc 65°11.3', Zn 099.4° N d. Hc 65°07.2', Zn 101.2° 2283: You observe the lower limb of the Sun at a sextant altitude (hs) of 22°58.6' on 16 June . The index error is 2.0' off the arc. The height of eye is 61 feet. What is the observed altitude (Ho)?
Y a. 23°06.7' N b. 23°09.9' N c. 23°15.4' N d. 23°22.2' 2332: If you are making 8.3 knots over the ground, what is your ETA at the turning point in York Spit Channel at buoy "29"?
Y a. 0521 N b. 0509 N c. 0459 N d. 0448 2535: What is the mile point of Hickman, KY Gage?
N a. 846.4 AHP N b. 889.0 AHP Y c. 922.0 AHP N d. 937.2 AHP 2581: At 1732, Bartlett Reef Lt bears 016°psc. Race Rock Lt bears 125.5°psc with a radar range of 4.4 miles. What is the set and drift?
N a. 116°, 0.4 knot N b. 116°, 1.0 knot N c. 296°, 0.4 knot Y d. 296°, 1.0 knot 2653: You are steering 019°T, and a light is picked up dead ahead at a distance of 11.6 miles at 0216. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light?
N a. 0258 N b. 0301 Y c. 0304 N d. 0307 2691: While on a course of 159°T, a light bears 11° on the starboard bow at a distance of 10.6 miles. What course should you steer to pass 2 miles abeam of the light leaving it to starboard?
Y a. 159°T N b. 163°T N c. 167°T N d. 171°T 2692: While on a course of 097°pgc, a light bears 8° on the port bow at a distance of 11.7 miles. What course should you steer to pass 3 miles abeam of the light leaving it to port?
N a. 082°pgc N b. 091°pgc Y c. 104°pgc N d. 112°pgc 2854: Your vessel is on a course of 221°T at 15 knots. At 0319 a light bears 198.5°T, and at 0353 the light bears 176°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0407, 4.3 miles N b. 0410, 5.2 miles Y c. 0417, 6.0 miles N d. 0427, 7.4 miles 3066: The observed noon to noon run for a 24 hour period is 489 miles. The average RPM for the day was 95. The pitch of the wheel is 22.5 feet. What is the slip of the wheel?
N a. +3.2% Y b. +3.4% N c. +3.7% N d. +3.9% 3073: If the speed necessary for reaching port at a designated time is 16.8 knots and the pitch of the propeller is 22.3 feet, how many revolutions per minute will the shaft have to turn, assuming a 4% negative slip?
N a. 61 N b. 66 Y c. 73 N d. 80 3265: You have steamed 1587 miles at 11.2 knots, and have consumed one-half of your total fuel capacity of 2840 bbls. What is the maximum speed you can steam to complete the remaining 1951 miles?
N a. 9.1 knots N b. 9.9 knots Y c. 10.1 knots N d. 11.6 knots 4001: You swung ship and compared the magnetic compass against the gyro compass to find deviation. Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic compass heading of 143°.
HEADING HEADING HEADING
PSC PGC PSC PGC PSC PGC
358.5° - 350° 122.5° - 110° 239.5° - 230°
030.5° - 020° 152.0° - 140° 269.0° - 260°
061.5° - 050° 181.0° - 170° 298.0° - 290°
092.0° - 080° 210.0° - 200° 327.5° - 320°
Y a. 2.0°W N b. 1.5°W N c. 0.5°W N d. 0.0° 10101: 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 east of Cape Charles Buoy "14" (LAT 37°07.4'N, LONG 75°41.0'W)?
N a. 040°psc Y b. 045°psc N c. 049°psc N d. 053°psc 10907: What is the time (DST ZD +4) of the AM high tide at York Point, Poquoson River on 8 September 1983?
N a. 0955 Y b. 1048 N c. 1055 N d. 1102 11005: What is the maximum speed permitted in the Main Entrance Channel to Port Jefferson Harbor?
N a. 3 mph N b. 5 mph N c. 7 mph Y d. 12 mph 11407: At 1930 your GPS position is LAT 41°00.5'N, LONG 72°49.5'W. At 2018 your position is LAT 41°08.6'N, LONG 72°41.6'W. What was your true course and speed made good?
N a. 219° at 10.1 knots N b. 214° at 12.5 knots Y c. 036° at 12.6 knots N d. 039° at 11.2 knots 11908: Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
Y a. 117°T N b. 112°T N c. 104°T N d. 102°T 12905: At 0919 you are in Chesapeake Channel between Trestle B and Trestle C of the Chesapeake Bay Bridge and Tunnel. What is your ETA to a point between York Spit Channel Buoys "35" and "36" if you are making 11.3 knots and follow the buoyed channel?
N a. 1025 N b. 1028 N c. 1033 Y d. 1037 15013: At 2020, what is the course to steer to enter the inbound lane of North Chesapeake Entrance traffic separation scheme if a northwesterly wind causes 3° of leeway?
N a. 227°pgc N b. 224°pgc Y c. 221°pgc N d. 215°pgc 15509: At 1800, your position is LAT 41°06.5'N, LONG 71°43.5'W. How would the buoy which bears approximately 040°T from your position at a range of half a mile be painted?
Y a. Horizontally banded, green over red, with a green buoyancy chamber N b. Horizontally banded, red over green, with a red buoyancy chamber N c. Vertically striped, red and green N d. Solid green with red letters "BIS" 15567: Point Judith Harbor of Refuge __________.
N a. is used mostly by towing vessels N b. has a maximum depth of 14 feet (4.3 meters) at MHW N c. West Gap has a controlling depth of 24 feet Y d. is entered through the East Gap or the West Gap 16041: From your 0847 fix, you change course to arrive at the rendezvous position and, correcting for current, you estimate your speed over the ground at 15 knots. What is your ETA at the rendezvous?
N a. 0902 N b. 0905 Y c. 0908 N d. 0911 16366: From your 0600 fix, you change course to 250°T. At 0605,
Cape Henry Light bears 250°T. At 0615, it bears 251°T. At 0625, it bears 252°T. Based on this you know you are __________.
Y a. being set to the south N b. being set to the north N c. meeting a current from dead ahead N d. running with a current from dead astern 16456: What is the course per standard magnetic compass from the anchorage to point A located 0.5 mile east of Cape Charles Lighted Bell Buoy 14?
Y a. 194°psc N b. 190°psc N c. 187°psc N d. 180°psc