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.
97: The highest point on your towboat is 57 feet above the water, and the Memphis Gage reads +1.3 feet. What is the vertical clearance when you pass under the Memphis Highway Bridge in Memphis?
N a. 112.7 feet N b. 55.7 feet Y c. 54.6 feet N d. 51.8 feet 226: At 2000, your position is LAT 37°04.1'N, LONG 76°05.6'W. You change course for the Eastern Shore. At 2037, Old Plantation Flats Light bears 033°pgc, and York Spit Light bears 282°pgc. The course made good from your 2000 position is __________.
N a. 020°T N b. 014°T N c. 006°T Y d. 359°T 261: You must arrive at your final destination by 0800. The distance from your 0300 position to the final destination is 40.5 miles. What minimum speed must be made good to arrive on time?
N a. 9.6 knots N b. 9.3 knots N c. 8.5 knots Y d. 8.1 knots 407: You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?
Y a. LONG 40°33.5'W N b. LONG 40°19.5'W N c. LONG 40°18.2'W N d. LONG 40°17.3'W 407: You depart LAT 34°22'S, LONG 18°23'E, and steam 3174 miles on course 282°T. What is the longitude of your arrival by Mercator sailing?
Y a. LONG 40°33.5'W N b. LONG 40°19.5'W N c. LONG 40°18.2'W N d. LONG 40°17.3'W 418: At 0830, Watch Hill Point bears 343°T at 3.5 miles by radar. What was the speed made good since 0745?
Y a. 7.1 knots N b. 6.7 knots N c. 5.8 knots N d. 5.4 knots 619: Your vessel departs Montevideo, Uruguay, LAT 34°40.3'S, LONG 54°09.1'W (ZD +4), at 1800 zone time, on 15 October . It is bound for New York, LAT 40°27.5'N, LONG 73°49.9'W (ZD +5). The distance is 5,749 miles, and you expect to average 20 knots. What is your estimated zone time of arrival?
N a. 0427, 26 October N b. 1627, 26 October Y c. 1627, 27 October N d. 0427, 27 October 627: You are on a voyage from Halifax, Nova Scotia, to Galveston, TX. The distance is 2138 miles, and the speed of advance is 12.5 knots. You estimate 18.0 hours for bunkering enroute at Port Everglades, FL. If you sail at 0648 hours (ZD +4), 12 June, what is your ETA (ZD +5) at Galveston?
Y a. 0250, 20 June N b. 0350, 20 June N c. 0550, 20 June N d. 1350, 20 June 633: The Linwood Bend revetment on the LMR extends from mile __________.
N a. 828.1-823.1 RDB N b. 831.7-829.4 RDB Y c. 841.3-838.7 LDB N d. 845.4-842.5 LDB 730: On 18 November , your 1750 zone time DR position is LONG 110°16.0'W. At that time you observe Polaris with a sextant altitude (hs) of 21°29.8'. The chronometer time of the sight is 00h 52m 43s, and the chronometer error is 02m 18s fast. The index error is 3.2' on the arc, and the height of eye is 49.5 feet. What is your latitude by Polaris?
Y a. 21°03.4'N N b. 21°13.4'N N c. 21°28.1'N N d. 21°35.1'N 1128: How far is it to the Hernando Desoto Bridge in Memphis, TN?
N a. 980.8 miles N b. 736.6 miles N c. 312.3 miles Y d. 218.1 miles 1277: On 22 June , your 0400 zone time DR position is LAT 23°00'N, LONG 81°45'W. You are steaming on course 110°T at a speed of 8.6 knots. What will be the zone time of sunrise at your vessel?
N a. 0537 Y b. 0541 N c. 0545 N d. 0547 1307: After entering Milliken Bend (mile 455 AHP) you wish to locate the river service in Madison Parish, Louisiana. The river service is indicated by the square containing which number?
Y a. 5 N b. 4 N c. 3 N d. 2 1659: On 15 July , in DR position LAT 22°19.0'N, LONG 154°37.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 298°psc. The chronometer reads 04h 45m 19s and is 01m 56s slow.
Variation in the area is 7.5°W. What is the deviation of the standard magnetic compass?
N a. 2.7°W Y b. 3.0°E N c. 3.6°W N d. 3.9°E 1689: What daymark will you see as you approach Warnicott Bar Lt. (mile 351.3 AHP)?
N a. Red diamond N b. Red triangle Y c. Green square N d. White square 1751: At 1118, on 24 May, you pass Natchez Gage and estimate the current will average 3.0 mph for the remainder of the time on the Mississippi River. What is your ETA at Cairo, IL if you continue to turn for 10 mph?
N a. 0840, 26 May N b. 2218, 26 May Y c. 2339, 27 May N d. 0339, 28 May 1842: What town is located at mile 389.8 AHP?
N a. Whitehall N b. Belmont N c. St. James Y d. Rodney 1896: On 22 June , your 0424 DR position is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing 154°T at an observed altitude (Ho) of 15°01.2'. The chronometer reads 12h 23m 24s, and is 01m 32s slow. What star did you observe?
N a. Peacock N b. Schedar Y c. Ankaa N d. Alioth 1903: On 22 April , your 1852 DR position is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing 259°T at an observed altitude (Ho) of 41°15.2'. The chronometer reads 02h 54m 53s, and is 02m 51s fast. What star did you observe?
N a. Diphda Y b. Betelgeuse N c. Gienah N d. Arcturus 2112: At 0130, you obtain the following bearings:
Horton Point Lighthouse 078°T
Mattituck Breakwater Light tower 196°T
What were the course and speed made good between 0100 and 0130?
Y a. 246°T at 9.8 knots N b. 253°T at 9.4 knots N c. 259°T at 9.8 knots N d. 267°T at 9.4 knots 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 2186: At 0922, on 24 May, you are abreast the St. Catherine Bar Lt. (mile 348.6 AHP). If you are turning for 8.0 mph, what is the current?
Y a. 1.0 mph N b. 1.4 mph N c. 2.0 mph N d. 7.0 mph 2672: While on a course of 283°pgc, a light bears 10° on the port bow at a distance of 8.3 miles. What course should you steer to pass 3.5 miles abeam of the light leaving it to port?
N a. 289°pgc N b. 294°pgc Y c. 298°pgc N d. 302°pgc 2894: You are steaming on a course of 071°T at 19 knots. At 1907 you observe a lighthouse bearing 122°T. At 1915 the lighthouse bears 154°T. What is your distance off at the second bearing?
N a. 3.4 miles Y b. 3.7 miles N c. 4.0 miles N d. 4.3 miles 3065: The propeller on your vessel has a pitch of 18'09". If the observed distance for a day's run was 399.4 miles and the average RPM was 86, which statement is TRUE?
N a. The slip is a positive 5%. N b. The day's run by engine RPM was 404.5 miles. Y c. The slip is a negative 5%. N d. The day's run by engine RPM was 390.6 miles. 3085: You must average 16.25 knots to reach port at a designated time. Your propeller has a pitch of 21'08", and you estimate 4% negative slip. How many RPM's must you average to arrive on time?
Y a. 73 RPM N b. 77 RPM N c. 82 RPM N d. 88 RPM 3306: You have steamed 264 miles and consumed 22.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 521 miles?
N a. 31.7 tons N b. 38.6 tons Y c. 43.4 tons N d. 85.7 tons 3617: Your vessel is steering course 299°psc, variation for the area is 7°W, and deviation is 4°W. The wind is from the southwest, producing a 3° leeway. What true course are you making good?
Y a. 291°T N b. 296°T N c. 299°T N d. 313°T 4007: 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 gyro heading of 166°.
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. 1.0°W N b. 1.0°E N c. 0.5°W N d. 0.5°E 10503: At 0817 your GPS indicates a position of LAT 37°01.6'N, LONG 75°31.7'W. You are on course 182° per standard magnetic compass at a speed of 9.2 knots. At 0913 your GPS indicates your position at LAT 36°52.3'N, LONG 75°30.8'W. What were the set and drift?
N a. 121°T at 0.8 knot N b. 139°T at 1.1 knots Y c. 219°T at 1.1 knots N d. 298°T at 0.7 knot 11100: Block Island is __________.
N a. surrounded by wide sandy beaches N b. a low, marshy island Y c. hilly with elevations to 200 feet (60.5 m) N d. a national bird sanctuary 12106: While in the Back River, you sight the two tanks along the Northwest Branch (vicinity LAT 37°05.6'N, LONG 76°22.0'W) in line bearing 277° per standard magnetic compass. If your vessel is heading 243°psc, what is TRUE?
N a. There is no deviation. N b. The deviation table is incorrect. Y c. The compass error is 12°W. N d. The deviation is 3°E for bearings of 277°psc. 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°. 12500: You are on course 135° per standard magnetic compass when you take the following bearings per standard magnetic compass: Cape Henry Light 266° Cape Charles Light 353°Chesapeake Light 124° What is your position?
Y a. LAT 36°57.3'N, LONG 75°50.9'W N b. LAT 36°57.5'N, LONG 75°50.1'W N c. LAT 36°57.6'N, LONG 75°51.6'W N d. LAT 35°57.9'N, LONG 75°50.8'W 13105: At 1048 you are in the entrance to Great Salt Pond on Block Island with buoy "5" close aboard. What is your ETA at the west gap of Point Judith Harbor of Refuge if you make good 8.3 knots?
N a. 1149 N b. 1154 N c. 1158 Y d. 1203 13708: A note on the chart indicates that currents in excess of how many knots can be expected in the vicinity of the Chesapeake Bay Bridge and Tunnel?
Y a. 3.00 knots N b. 2.20 knots N c. 1.75 knots N d. 1.50 knots 15007: What course should you steer using the standard magnetic compass (psc) to make good the course of 192°pgc?
N a. 188°psc N b. 195°psc Y c. 203°psc N d. 205°psc 15016: If the visibility is 3 miles, at what range will you lose sight of Chesapeake Light?
N a. The light has never been visible. N b. 6.4 miles Y c. 8.3 miles N d. 12.1 miles 15160: At 1815, your position is LAT 37°01.0'N, LONG 75°42.7'W. If there is no current, what is the course per standard magnetic compass to arrive at a point 0.3 mile due north of North Chesapeake Entrance Lighted Whistle Buoy "NCA"?
N a. 249.0°psc N b. 251.5°psc N c. 255.0°psc Y d. 257.0°psc 15219: From your 2118 position, you steer a course of 288°T at an engine speed of 7.0 knots. At 2120 visibility is suddenly reduced to 2 miles. At what time can you expect to see Old Point Comfort Light?
N a. 2136 N b. 2143 N c. 2202 Y d. 2228 15261: You make good 097°T from your 0830 fix. With a westerly current of 1.2 knots, what engine speed will you have to turn for from your 0830 position in order to arrive abeam of Six Mile Reef Buoy "8C" at 1030?
N a. 9.7 knots Y b. 10.5 knots N c. 10.9 knots N d. 12.1 knots 15410: You arrive at Cape Charles City at 1700 and depart at 1800. You are underway in Chesapeake Bay and encounter heavy fog. At 1830, you obtain the following radar readings:
Old Plantation Flats Light @ 1.9 nm
New Point Comfort Light bearing 301° true @ 10.55 nm
What is your 1830 position?
N a. LAT 37°10.3'N, LONG 76°04.5'W N b. LAT 37°10.3'N, LONG 76°06.5'W Y c. LAT 37°12.3'N, LONG 76°04.4'W N d. LAT 37°12.3'N, LONG 76°06.5'W 15565: From your 0600 position, what is the course per gyrocompass to leave Watch Hill Light abeam to starboard at 2.0 miles if a southerly wind is producing 3° of leeway?
N a. 251°pgc N b. 254°pgc N c. 257°pgc Y d. 261°pgc 15956: The National Weather Service provides 24-hour weather broadcasts to vessels transiting the Chesapeake Bay Bridge Tunnel. The broadcasts may be found on __________.
N a. 202.35 MHz N b. 181.15 MHz Y c. 162.55 MHz N d. 147.45 MHz 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 16068: From your 2118 position, you proceed to Norfolk, VA, a distance of approximately 26.0 miles. To arrive at Norfolk by 0200 the next day, what is the minimum speed to make good from your 2118 position to arrive at this time?
N a. 5.0 knots N b. 5.3 knots N c. 5.8 knots Y d. 5.5 knots 16140: Available information indicates that there is a set and drift in this area of 290°T at 2 knots. Allowing for this set and drift, what course must you steer to make good a true course of 150°, while maintaining an engine speed of 13 knots, from your 1930 position?
N a. 141°T Y b. 145°T N c. 149°T N d. 153°T 16216: 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. 0750 Y b. 0807 N c. 0838 N d. 0845 16257: If your engines turn for 6.5 knots, and you encounter a 0.5 knot southerly current after weighing anchor. What is your ETA at point A?
N a. 0511 N b. 0501 Y c. 0450 N d. 0440 16462: Which statement about your 0400 position is TRUE?
Y a. You are within the territorial sea and contiguous zone. N b. You are governed by the Inland Rules of the Road. N c. The ocean floor is composed of shale. N d. Anchoring, trawling and fishing are prohibited. 16746: In order to check your compasses, you sight Race Rock Light in line with New London Harbor Light bearing 336° per gyrocompass. The helmsman reports the vessel was heading 275.0°pgc and 290.5° per standard magnetic compass at the time of the observation. Which statement is TRUE?
N a. The gyro error is now 2°E. Y b. The deviation table is correct for that heading. N c. The vessel should be swung to check the deviation table. N d. The compass error is 0.5°W.