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.
111: As you pass Solitude Lt. (mile 249.0 AHP) which dayboard would you see?
N a. Green square Y b. Green diamond N c. Red triangle N d. Red diamond 118: 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 123: On which map would you find Redman Point, Arkansas?
Y a. 20 N b. 23 N c. 29 N d. 37 125: As you approach Ashland Light (mile 378.1 AHP) which daymark would you see?
Y a. Red triangle N b. Red diamond N c. Green square N d. Green diamond 184: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________.
N a. 40 feet (12.2 meters) Y b. 50 feet (15.2 meters) N c. 60 feet (18.3 meters) N d. 70 feet (23.2 meters) 331: You leave York Spit Channel at buoy "14" at 0600 with an engine speed of 12 knots. You receive orders to rendezvous with the tug "Quicksilver" and her tow at Hog Island Bell Buoy "12". What is your ETA at the rendezvous point, if you pass through Chesapeake Channel to buoy "CBJ", through the outbound traffic separation lane to buoy "NCA" (LL#375), and then to the rendezvous point?
N a. 0935 Y b. 0910 N c. 0850 N d. 0830 366: At 0731, approximately how much water is under your keel?
N a. 26 feet (7.9 meters) Y b. 31 feet (9.4 meters) N c. 48 feet (14.5 meters) N d. 54 feet (16.4 meters) 388: From your 0745 fix, you change course to pass 1.0 mile south of buoy "WH" and estimate your speed at 7 knots. If the visibility clears, what is the earliest time you can expect to see Block Island North Light tower?
N a. 0845 N b. 0838 Y c. 0807 N d. 0750 396: A vessel at LAT 10°22.0'S, LONG 7°18.0'E, heads for a destination at LAT 6°52.0'N, LONG 57°23.0'W. Determine the true course and distance by Mercator sailing.
N a. 285°T, 3825.3 miles Y b. 285°T, 4025.7 miles N c. 296°T, 3825.3 miles N d. 296°T, 4025.7 miles 408: You depart LAT 37°36'N, LONG 123°00'W, and steam 2022 miles on course 241°T. What is the longitude of your arrival by Mercator sailing?
N a. LONG 163°28.2'W N b. LONG 163°18.2'W Y c. LONG 156°51.7'W N d. LONG 154°18.3'W 507: At 0112, you are on course 124°T and turning for 12.0 knots. What course will you make good if the current is 255°T at 1.2 knots?
N a. 118° N b. 120° Y c. 129° N d. 132° 534: You depart LAT 52°01'N, LONG 176°09'E, for LAT 52°01'N, LONG 178°46'W. What are the course and distance by parallel sailing?
N a. 090°T, 95 miles Y b. 090°T, 188 miles N c. 270°T, 95 miles N d. 270°T, 188 miles 543: What was the current between 0520 and 0600?
N a. 201° at 1.0 knot N b. 201° at 1.5 knot Y c. 021° at 1.5 knot N d. 021° at 1.0 knots 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 744: On 22 May , at 0440 ZT, your vessel's DR position is LAT 23°24'N, LONG 110°24'W. At approximately this time, you obtain a sextant altitude (hs) of Polaris reading 23°40.9' with an index error of 1.6' on the arc. Your chronometer reads 11h 42m 14s, and is 2m 36s fast. What is your latitude by Polaris, given a height of eye of 24 feet?
N a. 23°28.6'N N b. 23°30.0'N Y c. 23°31.2'N N d. 23°32.8'N 845: On 16 September , your 0600 ZT fix gives you a position of LAT 29°47.2'N, LONG 65°28.4'W. Your vessel is on course 242°T and your speed is 13.5 knots. Local apparent noon (LAN) occurs at 1227 ZT, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 63°25.3'. What is the calculated latitude at LAN?
N a. 29°07.9'N N b. 29°06.1'N Y c. 29°04.7'N N d. 29°01.6'N 1008: On 27 March , your 0730 zone time position is LAT 28°16'N, LONG 56°37'W. Your vessel is on course 158°T at a speed of 15.0 knots. An observation of the Sun's lower limb is made at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer error is 00m 53s slow. The observed altitude (Ho) is 45°10.7'. LAN occurs at 1150 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) is 65°32.8'. Determine the vessel's 1200 zone time position.
Y a. LAT 27°08.8'N, LONG 56°04.2'W N b. LAT 27°08.8'N, LONG 56°10.3'W N c. LAT 27°11.6'N, LONG 56°04.2'W N d. LAT 27°11.6'N, LONG 56°10.3'W 1132: Which light will you be passing at 0059, on 22 September, if you make good 9.2 knots?
Y a. Obion Bar Lt. N b. Kate Aubrey Lt. N c. Trotter Lt. N d. Quaker Oats Lt. 1142: At 1132, 24 May, you pass Natchez Beam Lt. (mile 364.8 AHP). What is your ETA off the Memphis Gage if you average 8.0 mph?
N a. 2345, 25 May Y b. 0947, 26 May N c. 1525, 26 May N d. 2215, 26 May 1252: On 13 August , your 0345 ZT DR position is LAT 21°35.0'
N, LONG 135°26.0'W. You are on course 052°T at a speed of 14 knots. What will be the zone time of sunrise at your vessel?
N a. 0443 N b. 0449 Y c. 0536 N d. 0540 1407: At 2350 hours on 23 June, you are at mile 610.5 AHP when you see about a mile ahead white 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 1463: On 26 May , your 0723 zone time DR position is LAT 24°50.0'N, LONG 38°11.0'W. At that time, you observe the Sun bearing 076.5°psc. The chronometer reads 10h 25m 43s, and the chronometer error is 02m 57s fast. The variation is 7°W. What is the deviation of the standard magnetic compass?
N a. 3.3°E N b. 3.7°W N c. 8.3°W Y d. 10.7°E 1469: On 2 March , your 2216 ZT DR position is LAT 21°20.0'S, LONG 17°10.0'W. At that time, you observe Saturn bearing 078°psc. The chronometer reads 11h 14m 04s, and the chronometer error is 02m 20s slow. The variation is 4.5°W. What is the deviation of the standard compass?
N a. 1.5°W N b. 1.6°E N c. 2.9°W Y d. 3.6°E 1765: The river will be temporarily closed to navigation at mile 531.3 AHP due to repairs to the bridge. This will occur at 1530, 5 January, and last for six hours. What minimum speed over the ground must you make from Red River Landing Gage in order not to be delayed?
Y a. 6.2 mph N b. 6.4 mph N c. 6.8 mph N d. 7.3 mph 1839: What are the dimensions of the channel maintained from Baton Rouge to New Orleans, LA?
N a. 30 feet x 300 feet N b. 40 feet x 300 feet N c. 30 feet x 500 feet Y d. 45 feet x 500 feet 1949: The circle with black and white quadrants located at mile 435.6 AHP is a __________.
N a. Daymark N b. Electrical Tower Y c. River Gage N d. Information Board 2002: On 16 July , your 1810 zone time DR position is LAT 24°16.5'S, LONG 162°52.0'E. Considering their magnitude,
azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Arcturus, Spica, Antares Y b. Jupiter, Alphard, Alphecca N c. Pollux, Mars, Deneb N d. Vega, Hadar, Venus 2109: At 0100, you obtain the following bearings:
Rocky Point Lookout Tower 062°T
Horton Point Lighthouse 189°T
What was the speed made good between 0045 and 0100?
Y a. 7.4 knots N b. 8.0 knots N c. 8.7 knots N d. 9.2 knots 2210: The low water reference plane (LWRP) for Bayou Sara is 5.25 feet. If the Bayou Sara Gage reads -0.5 feet, what is the water level in relation to the low water reference plane?
N a. 4.75 feet above the plane N b. 5.75 feet above the plane Y c. 5.75 feet below the plane N d. 4.75 feet below the plane 2324: At 1547 ZT, on 22 May , in DR position LAT 45° 12.8' N, LONG 028° 15.4' W, the Moon’s upper limb is observed on the visible horizon, bearing 120.0° psc. Variation is 2° W. What is the deviation?
N a. 1.4°W Y b. 2.6°E N c. 1.4°E N d. 2.6°W 2462: You have steamed 504 miles at 21 knots and burning 633 barrels of fuel per day. You must decrease your consumption to 410 barrels per day with 399 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 20.1 Y b. 19.0 N c. 16.2 N d. 15.0 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 2677: You sight a light 9° on your starboard bow at a distance of 21 miles. Assuming you make good your course, what will be your distance off the light when abeam?
Y a. 3.3 miles N b. 3.7 miles N c. 4.0 miles N d. 4.3 miles 2683: You are underway on a course of 135°pgc at 15 knots, and you sight a lighthouse dead ahead at a range of 12.5 miles at 1145. What course would you steer to leave the lighthouse 3.0 miles off your port beam?
N a. 117°pgc N b. 121°pgc Y c. 149°pgc N d. 154°pgc 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 2705: While on a course of 192°T, a light bears 11° on the starboard bow at a distance of 12.7 miles. What course should you steer to pass 3 miles abeam of the light leaving it to starboard?
N a. 167°T N b. 173°T N c. 185°T Y d. 189°T 2853: Your vessel is on a course of 343°T at 14 knots. At 2156 a light bears 320.5°T, and at 2217 the light bears 298°T.
At what time and at what distance off will your vessel be when abeam of the light?
Y a. 2232, 3.4 miles N b. 2235, 4.3 miles N c. 2228, 4.9 miles N d. 2241, 6.9 miles 3111: You are turning 100 RPM, with propeller pitch of 25 feet, and an estimated negative slip of 5%. What is the speed of advance?
N a. 23.4 knots N b. 24.7 knots Y c. 25.9 knots N d. 26.3 knots 3616: You desire to make good a true course of 046°. The variation is 6°E, magnetic compass deviation is 12°W, and the gyrocompass error is 3°W. A northerly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make good the true course?
Y a. 047°psc N b. 049°psc N c. 052°psc N d. 057°psc 4005: 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 magnetic compass heading of 022°.
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. 1.5°E N b. 0.5°E Y c. 0.0° N d. 0.5°W 11007: What will be the height of the high water at Mount Sinai Harbor on the morning of 26 August 1983?
N a. 4.1 feet Y b. 6.3 feet N c. 7.2 feet N d. 8.4 feet 11107: What is the time (Daylight Savings Time) of the first high tide on 1 July 1983 at Great Salt Pond on Block Island?
Y a. 0027 N b. 0448 N c. 1158 N d. 1203 13706: What is the horizontal clearance of the navigation opening of Trestle B of the Chesapeake Bay Bridge and Tunnel?
N a. 21 feet Y b. 70 feet N c. 75 feet N d. 300 feet 14517: From your 2200 fix, you steer course 288°T to travel up the Thimble Shoal North Auxiliary Channel. If you are making good 6.0 knots, at what time would you expect to pass buoy "18" at the west end of the channel? (There are no set and drift.)
N a. 2239 N b. 2255 N c. 2315 Y d. 2344 15115: If the visibility is 11 miles, what is the luminous range of New Point Comfort Spit Light "4"?
N a. 0.5 mile N b. 3.8 miles N c. 4.3 miles Y d. 5.0 miles 15157: If there is no current, what is the course per gyro compass from your 1600 position to point "A" located 0.5 mile due east of Hog Island Lighted Bell Buoy "12"?
N a. 190°pgc N b. 193°pgc N c. 196°pgc Y d. 199°pgc 15770: At 0930, your position is LAT 41°16.5'N, LONG 71°41.4'W, and you are turning for 7 knots. Allowing 3° leeway for northerly winds and estimating the current as 035° at 0.3 knot, what is the course to steer (pgc) to point "B"?
N a. 084°pgc Y b. 086°pgc N c. 091°pgc N d. 094°pgc 16010: The characteristic of Branford Reef Light is __________.
N a. flashing red every 4 seconds N b. flashing red every 3 seconds Y c. flashing white every 6 seconds N d. flashing yellow every 4 seconds 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. 16056: At 1730, your position is LAT 37°13.9'N, LONG 76°26.4'W. What is your distance off Tue Marshes Light?
N a. 2.2 miles Y b. 2.6 miles N c. 3.0 miles N d. 3.4 miles 16066: Which statement concerning Thimble Shoal Channel is TRUE?
Y a. The project width of the main channel is 1000 feet (30.3 meters) N b. The channel is 14.5 miles in length. N c. A tow drawing 30 feet (9.1 meters) is excluded from the main channel. N d. Thimble Shoal Channel is in international waters. 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 16313: At 0730, visibility is 5.5 miles. At what time will you lose sight of Horton Point Light?
N a. It is not visible at 0730 Y b. 0751 N c. 0812 N d. 0825 16317: Which chart would you use for more detailed information on New Haven Harbor?
N a. 12370 Y b. 12371 N c. 12372 N d. 12373 16612: At 0112, what is the approximate depth under the keel?
Y a. 38 feet (11.5 meters) N b. 47 feet (14.2 meters) N c. 51 feet (15.5 meters) N d. 57 feet (17.3 meters) 16713: At 0600 you take the following bearings:
Point Judith Light bearing 063°pgc
Block Island North Reef Light bearing 144°pgc
What is your 0600 position?
N a. LAT 41°18.1'N, LONG 71°38.3'W Y b. LAT 41°18.3'N, LONG 71°38.7'W N c. LAT 41°18.4'N, LONG 72°38.1'W N d. LAT 41°18.5'N, LONG 71°38.9'W