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.
235: At 0830, you obtained the following Radar Ranges:
New Haven Light @ 2.2 nm
Branford Reef Light @ 4.2 nm
What is your vessel's position?
N a. LAT 41°12.4'N, LONG 73°56.0'W N b. LAT 40°17.4'N, LONG 73°54.0'W Y c. LAT 41°12.4'N, LONG 72°53.8'W N d. LAT 41°13.4'N, LONG 72°53.8'W 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 293: At 1730, your position is LAT 37°13.9'N, LONG 76°26.4'W. You are steering course 088° per standard magnetic compass (psc) at an engine speed of 8.0 knots. What is your distance off Tue Marshes Light at 1730?
N a. 3.2 miles N b. 3.0 miles N c. 2.8 miles Y d. 2.6 miles 335: At 1810, you obtain the following bearings:
Cape Charles Light bearing 005° pgc
Cape Henry Light bearing 251.5° pgc
What is your position?
N a. LAT 36°56.0'N, LONG 75°58.5'W N b. LAT 36°55.4'N, LONG 75°56.0'W Y c. LAT 36°56.8'N, LONG 75°55.6'W N d. LAT 36°57.4'N, LONG 75°54.6'W 348: At 0430, you take the following radar ranges:
Stratford Point Light @ 5.25 nm
Middle Ground Light @ 4.55 nm
What is your 0430 position?
N a. LAT 41°08.9'N, LONG 73°00.0'W N b. LAT 41°05.0'N, LONG 73°01.1'W Y c. LAT 41°05.8'N, LONG 73°00.8'W N d. LAT 41°06.5'N, LONG 73°01.4'W 362: At 0530, the Coast Guard announces that Chesapeake Channel is closed indefinitely due to a collision occurring in the channel between Trestle "B" and "C" of the Chesapeake Bay Bridge and Tunnel. You exit York Spit Channel, leaving buoy "20" abeam to port at 0.1 mile, and alter course to leave Horseshoe Crossing Lighted Bell Buoy abeam to port at 0.2 mile. What is the course per gyrocompass?
Y a. 193°pgc N b. 190°pgc N c. 187°pgc N d. 185°pgc 448: At 2100, you set course of 000°T, speed 10 knots from LAT 41°07.0'N, LONG 71°30.0'W. Visibility is 5.5 n.m. What is the earliest time you can expect to sight Point Judith Light? (Use charted range of 20 miles as nominal range.)
N a. The light is visible at 2100. N b. 2106 Y c. 2111 N d. 2123 455: Determine the great circle distance and initial course from LAT 24°52.0'N, LONG 78°27.0'W to LAT 47°19.0'N, LONG 06°42.0'W.
Y a. 3593 miles, 048.1°T N b. 3457 miles, 053.3°T N c. 3389 miles, 042.4°T N d. 3367 miles, 045.0°T 599: Which town is located at mile 663.5 AHP?
Y a. Helena N b. Friers Point N c. St. Francis N d. Rodney 700: Which facility is located on the right descending bank at mile 363.6 AHP?
N a. River Cement Corps.. Y b. Vidalia Dock and Storage Co. N c. T.L. James N d. Bunge Corps.. 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 1001: On 26 July , your 1030 ZT DR position is LAT 18°25'N, LONG 51°15'W. You are on course 231°T, speed 15 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1228 50°23.5' N 19°21.9' 88°14.3'
1236 52°23.5' N 19°21.8' 88°29.0'
N a. LAT 18°00.9'N, LONG 51°31.9'W N b. LAT 18°03.5'N, LONG 51°36.2'W Y c. LAT 18°07.2'N, LONG 51°30.4'W N d. LAT 18°10.6'N, LONG 51°25.1'W 1084: On 4 Dec. , your 1500 ZT DR position is LAT 18°06.0'N, LONG 75°42.0'W. You are on course 020°T at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1548 running fix.
N a. LAT 18°10.3'N, LONG 75°34.5'W N b. LAT 18°12.6'N, LONG 75°42.0'W N c. LAT 18°14.0'N, LONG 75°40.0'W Y d. LAT 18°17.3'N, LONG 75°37.7'W 1197: On 16 November , your 0800 ZT DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on a course of 252°T at a speed of 14.5 knots. What is the ZT of local apparent noon (LAN)?
N a. 1135 Y b. 1139 N c. 1143 N d. 1146 1268: On 25 December , your 0330 ZT DR position is LAT 25°15.0'N, LONG 32°16.0'W. You are on course 145°T at a speed of 20 knots. What will be the zone time of sunrise at your vessel?
N a. 0623 N b. 0635 N c. 0641 Y d. 0647 1478: On 12 June , at 0919 zone time, your position is LAT 26°52'N, LONG 84°34'W. The chronometer reads 03h 17m 00s. Chronometer error is 01m 40s slow. At that time, an azimuth of the Sun is obtained. The bearing is 089.5° per standard magnetic compass. Variation for this area is 4.5°E. What is the deviation of the standard magnetic compass?
N a. 9.5°E N b. 9.5°W N c. 5.2°E Y d. 5.2°W 1535: The Red River Landing Gage reads 5.2 feet. The low water reference plane (LWRP) for Red River is 10.6 feet. Which of the following statements is TRUE?
Y a. River level is below the Low Water Reference Plane. N b. The depth over revetment at Old River is 25.2 ft. N c. The depth over Old River Lock sill is greater than 11 ft. N d. This gage reading is at a higher elevation than the same reading on the Gage at Head of Passes. 1643: Which facility is located on the right descending bank at mile 363.6 AHP?
N a. River Cement Corps.. N b. Bunge Corps.. N c. T.L. James Y d. Vidalia Dock and Storage Co. 1777: At 2232 ZT, on 14 July , in DR position LAT 33°52'S, LONG 150°03'W you observe an amplitude of Jupiter. The planet is about one Sun's diameter above the visible horizon and bears 268.5°pgc. The variation is 15°E. What is the gyro error?
Y a. 1.0°E N b. 0.5°E N c. 0.0° N d. 0.5°W 1898: On 22 May , your 0437 DR position is LAT 25°18.5'N, LONG 51°18.0'W. You observe an unidentified star bearing 142°T at an observed altitude (Ho) of 23°10.2'. The chronometer reads 07h 40m 40s, and is 03m 24s fast. What star did you observe?
N a. Markab N b. Diphda N c. Sabik Y d. Fomalhaut 2017: On 2 February , your 0400 zone time DR position is LAT 24°14.0'N, LONG 163°28.0'W. You are on course 322°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. Saturn, Antares, Rasalhague N b. Jupiter, Saturn, Polaris N c. Saturn, Polaris, Zubenelgenubi N d. Jupiter, Spica, Denebola 2115: The south coast of Long Island Sound between Mattituck Inlet and Port Jefferson is __________.
N a. composed of high rocky bluffs N b. a high, flat plateau with sheer cliffs Y c. fringed by rocky shoals N d. low and marshy with isolated beaches 2160: On 17 April , your vessel's 1856 zone time DR position is LAT 22°35.0'N, LONG 63°15.0'W. At that time, a sextant observation of the star Sirius is made. The sextant altitude is 42°45.0' and the chronometer reads 10h 59m 27s.
The index error is 2.6' off the arc, and the chronometer error is 03m 01s fast. Your height of eye is determined to be 45 feet. What is the computed altitude (hc) and azimuth (Zn) for this sight using the assumed position?
N a. 42°40.0', 214.9°T N b. 42°40.0', 325.1°T Y c. 42°51.6', 214.9°T N d. 42°51.6', 325.1°T 2167: On 4 July , at 0630 ZT, morning stars were observed, and the vessel's position was determined to be LAT 21°15.0'S, LONG 21°20.0'W. Your vessel is steaming at 13.0 knots on a course of 146°T. A sextant observation of the Sun's lower limb is made at 0915 ZT. The chronometer reads 10h 14m 27s, and the sextant altitude is 25°29.8'. The index error is 3.1' off the arc, and the chronometer error is 0m 53s slow. Your height of eye on the bridge is 48.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 049.5°T N b. 052.6°T N c. 054.3°T N d. 058.9°T 2233: You have orders to drop off the empties at the fleeting area at Cairo Point and add five loaded tank barges to your tow. If you are turning for 9 mph and estimate the current at 1.5 mph, what is your ETA at Cairo?
N a. 1031, 22 June Y b. 1423, 22 June N c. 1741, 22 June N d. 2210, 22 June 2459: You have steamed 432 miles at 18 knots and burning 406 barrels of fuel per day. You must decrease your consumption to 221 barrels per day with 190 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 10.6 N b. 12.8 Y c. 16.5 N d. 17.7 2787: What is the length of the trip?
Y a. 1088.5 miles N b. 1332.2 miles N c. 1334.6 miles N d. 1566.4 miles 2890: You are steaming on a course of 084°T at a speed of 13 knots. At 1919 a lighthouse bears 106.5°T. At 1957 the same lighthouse bears 129°T. What will be your distance off the lighthouse when abeam?
N a. 4.3 miles Y b. 5.7 miles N c. 7.1 miles N d. 8.2 miles 2893: You are steaming on a course of 253°T at 14 knots. At 2329 you observe a lighthouse bearing 282°T. At 2345 the lighthouse bears 300°T. What is your distance off at the second bearing?
N a. 3.7 miles N b. 4.3 miles N c. 5.2 miles Y d. 5.9 miles 3055: The propeller on a vessel has a diameter of 24.6 feet and a pitch of 26.1 feet. What would be the apparent slip if the vessel cruised 462 miles in a 24 hour day (observed distance) at an average RPM of 72?
N a. -2.7% N b. +2.7% Y c. -3.8% N d. +3.8% 3057: The propeller on a vessel has a diameter of 25.3 feet and a pitch of 23.2 feet. What would be the apparent slip if the vessel cruised 515 miles in a 23 hour day (observed distance) at an average RPM of 93?
N a. -3.6% N b. +3.6% Y c. -5.2% N d. +5.2% 3102: You are turning 88 RPM, with a propeller pitch of 19 feet, and an estimated slip of 0%. What is the speed of advance?
Y a. 16.5 knots N b. 16.9 knots N c. 17.3 knots N d. 18.1 knots 3103: You are turning 93 RPM, with a propeller pitch of 25 feet, and an estimated slip of 0%. What is the speed of advance?
N a. 20.2 knots N b. 21.9 knots N c. 22.4 knots Y d. 22.9 knots 3107: You are turning 68 RPM, with a propeller pitch of 18 feet, and an estimated slip of +2%. What is the speed of advance?
N a. 10.7 knots N b. 11.5 knots Y c. 11.8 knots N d. 12.3 knots 3285: While steaming at 19.4 knots, your vessel consumes 392 barrels of fuel oil per day. In order to reduce consumption to 182 barrels of fuel oil per day, what is the maximum speed the vessel can turn for?
N a. 13.2 knots Y b. 15.0 knots N c. 17.4 knots N d. 18.2 knots 3304: You have steamed 265 miles and consumed 25.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 346 miles?
Y a. 32.6 tons N b. 37.4 tons N c. 42.6 tons N d. 49.5 tons 4009: 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 true heading of 187°.
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°
N a. 1.5°W Y b. 0.5°W N c. 0.0° N d. 1.0°E 10303: Determine the course per standard magnetic compass from 0.2 mile south of Race Rock Light (LAT 41°14.6'N, LONG 72°02.8'W) to the entrance of the channel to Lake Montauk (west of Montauk Point).
N a. 137.0°psc N b. 152.0°psc N c. 165.5°psc Y d. 168.5°psc 11704: What is the true heading to steer in York River Entrance Channel if your engines are turning for 10.2 knots, the current is 220°T at 1.2 knots and a southwesterly wind causes 3° of leeway?
N a. 316°T Y b. 313°T N c. 309°T N d. 300°T 11800: What is the course to steer between Port Jefferson Approach buoy "PJ" and New Haven Lighted Buoy "NH"? Your engine speed is 12 knots and you allow for a current of 93°T at 0.8 knot. A NW'ly wind causes 3° leeway.
Y a. 030°T N b. 034°T N c. 037°T N d. 044°T 11903: What is the true course to steer between the entrance to Winnapaug Pond (LAT 41°19.6'N, LONG 71°45.8'W) and the entrance to Lake Montauk (LAT 41°04.8'N, LONG 71°56.3'W), if you are turning for 8.5 knots, allowing for a current of 095°T at 0.9 knot, and an easterly wind is causing 3° of leeway?
N a. 200°T N b. 208°T Y c. 211°T N d. 214°T 12207: You sight Stratford Pt. Light in line with the Igor I. Sikorsky Airport Aero Beacon bearing 319° per standard magnetic compass. What is the compass deviation?
Y a. 4°W N b. 4°E N c. 18°W N d. 18°E 15370: If visibility permits, Little Gull Island Light will break the horizon at a range of approximately __________.
N a. 11.1 miles N b. 12.8 miles Y c. 15.6 miles N d. 18.0 miles 15409: At 1540, your position is LAT 37°18.4'N, LONG 76°10.5'W. Which course should you steer per gyrocompass to head for the entrance to Cape Charles City?
N a. 109°pgc N b. 117°pgc N c. 123°pgc Y d. 129°pgc 15606: Your 1600 position is LAT 37°22.5'N, LONG 75°32.3'W. The depth of water under the keel is about __________.
Y a. 38 feet (11.5 meters) N b. 45 feet (13.6 meters) N c. 52 feet (15.8 meters) N d. 59 feet (17.3 meters) 15616: At 2037, you change course to make good a course of 016°T.
There is no current, but a westerly wind is causing 3°
leeway. What course per standard magnetic compass (psc)
should you steer to make good the course 016°T?
N a. 031°psc N b. 028°psc N c. 025°psc Y d. 022°psc 15626: What type of daymark will you see as you approach Joe Pierce Light (mile 335.4 AHP)?
N a. Private aid - no daymark N b. Red square Y c. Red triangle N d. Red diamond 15641: You will pass through the Race at approximately the time of maximum ebb current. As you APPROACH the Race from New London, you will be set __________.
Y a. to the left of the track line N b. to the right of the track line N c. forward along the track line N d. towards New London along the track line 15868: Stratford Shoal Middle Ground Light is __________.
N a. 13 foot high N b. a fixed white light N c. shown from a white tower Y d. equipped with a HORN 15938: At 1910 you obtain the following bearings:
Bartlett Reef Light 268°T
Race Rock Light 147°T
Little Gull Island Light 198°T
Which of the following is your position at 1910?
N a. LAT 41°17.4'N, LONG 72°05.6'W N b. LAT 41°17.0'N, LONG 72°07.1'W Y c. LAT 41°16.6'N, LONG 72°04.6'W N d. LAT 41°16.2'N, LONG 72°06.4'W 15944: From your 2038 position you change course to 104°T and increase engine speed to 18 knots. If you make good this course and speed, at what time will Southwest Ledge Lighted Bell Buoy "2" bear 157°T?
N a. 2047 Y b. 2052 N c. 2056 N d. 2101 16308: At 0530, your position is LAT 41°13.6'N, LONG 72°08.5'W. What is the color of New London Harbor Light?
Y a. Red N b. White N c. Green N d. Alternating white and green