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.
90: As you approach Giles Bend Cutoff Light (mile 367.7 AHP), what type of daymark would you see on the light structure?
N a. None N b. Red diamond N c. Red square Y d. Red triangle 94: You have orders to drop off the empties at the fleeting area in Cairo and add five loaded barges to your tow. If you are turning for 8 mph and estimate the current at 0.5 mph, what is your ETA at Cairo?
N a. 1928, 11 Aug Y b. 1614, 11 Aug N c. 1327, 11 Aug N d. 2352, 10 Aug 120: You estimate the current as 2.5 mph. What is the speed over the ground?
N a. 5.5 mph Y b. 6.0 mph N c. 8.0 mph N d. 11.0 mph 191: If you make good 12 knots, what is the ETA at North Chesapeake Channel Entrance Buoy "NCA" (LL #375)?
N a. 2121 N b. 2116 Y c. 2111 N d. 2101 233: At 0725, you are heading 054°T, and Stratford Point Light is abeam to port at 3.1 miles. The current is 135°T at 1.8 knots. If you make turns for an engine speed of 8 knots, which course must you steer to make good 048°T?
N a. 055°T N b. 047°T N c. 042°T Y d. 035°T 319: At 2100, you have passed through the Chesapeake Bay Bridge and Tunnel and determine your position to be LAT 37°01.3'N, LONG 76°03.0'W. The current is flooding in a direction of 303°T at 2.5 knots. Adjusting your course for set and drift, which course would you steer while turning RPMs for 6 knots to make good a course of 175°T?
N a. 190°T N b. 183°T N c. 164°T Y d. 156°T 352: What is the approximate distance to New Bedford, MA, from your 0530 DR position, if your 0352 position was 7 miles from Bridgeport, CT?
N a. 122 miles N b. 115 miles Y c. 104 miles N d. 95 miles 368: 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" Y c. Cape Charles Light bears 022°T N d. you cross the boundary of the contiguous zone 425: At 0730, your position is LAT 41°10.5'N, LONG 72°32.2'W. From this position you steer course 286°psc with an engine speed of 9.0 knots. What is the approximate depth of water under your keel?
N a. 67 feet (20.3 meters) N b. 62 feet (18.8 meters) N c. 57 feet (17.3 meters) Y d. 52 feet (15.8 meters) 485: Determine the great circle distance and initial course from LAT 08°53.0'N, LONG 79°31.0'W to LAT 33°51.5'S, LONG 151°13.0'E.
N a. 7809 miles, 247.0°T N b. 7763 miles, 247.0°T Y c. 7635 miles, 233.9°T N d. 7618 miles, 230.3°T 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 537: Determine the distance from LAT 19°54.0'N, LONG 166°36.0'E to LAT 19°54.0'N, LONG 157°54.0'W. by parallel sailing.
N a. 2204.6 miles N b. 2006.9 miles Y c. 2002.8 miles N d. 1990.6 miles 576: What is indicated by the dashed magenta line crossing York Spit Channel between buoys "20" and "22"?
N a. You are crossing the demarcation line between the COLREGS and the Inland Rules. N b. The line indicates a submarine cable, and you should not anchor in the area. Y c. The line marks the limits of a regulated area. N d. It marks the range between Ft. Wool Light and Cape Charles Harbor Range, Rear Light. 605: At 0915 ZT, on 26 July , you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9). You are bound for Seattle, LAT 47°36.0'N, LONG 122°22.0'W, and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated ZT of arrival at Seattle?
Y a. 0728, 7 August N b. 1528, 7 August N c. 0028, 8 August N d. 1528, 8 August 637: The highest point on your towboat is 48 feet above the water, and the Memphis Gage reads +7.5 feet. What is the vertical clearance when you pass under the Hernando Desoto Bridge in Memphis?
N a. 48.0 feet Y b. 53.2 feet N c. 68.2 feet N d. 116.0 feet 846: On 22 February , your 0612 zone time fix gives you a position of LAT 27°16.2'S, LONG 37°41.6'W. Your vessel is on course 298°T, and your speed is 14.2 knots. Local apparent noon (LAN) occurs at 1147 zone time, at which time a meridian altitude of the Sun's lower limb is observed. The observed altitude (Ho) for this sight is 73°33.3'. What is the calculated latitude at LAN?
Y a. 26°31.4'S N b. 26°29.5'S N c. 26°27.1'S N d. 26°24.8'S 1175: On 12 February , your 0900 zone time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course 093°T at a speed of 18.5 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1237 N b. 1233 N c. 1230 N d. 1226 1181: On 4 January , your 0800 zone time DR position is LAT 25°25.0 S, LONG 16°09.0'W. Your vessel is on course 290°T at a speed of 13.5 knots. What is the zone time of local apparent noon (LAN)?
N a. 1157 N b. 1205 N c. 1209 Y d. 1213 1239: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. List of Buoys and Daymarks N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Chart Y d. None of the above 1364: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. List of Buoys and Daymarks N b. U.S.C.G. Light List N c. Army Corps. of Engineers Navigation Chart Y d. None of the above 1546: As you pass under the Vicksburg Bridges, you estimate the current as 3.0 mph. What is the speed over the ground, if your vessel is making turns for 10.5 mph?
N a. 7.5 mph N b. 10.5 mph Y c. 13.5 mph N d. 16.5 mph 1722: You estimate the current as 2.0 mph. What is the speed over the ground?
N a. 4.5 mph Y b. 5.5 mph N c. 7.5 mph N d. 9.5 mph 1841: At 0509, on 26 December, you pass under the Helena Highway Bridge (mile 661.7 AHP). What has been the average speed of the current since departing Memphis Harbor, McKellar Lake, if you have been making turns for 7.5 mph?
N a. 1.8 mph N b. 2.1 mph Y c. 4.4 mph N d. 5.6 mph 1856: On 22 June , your 0424 ZT DR position is LAT 26°18.5'N,
LONG 124°18.2'W. You observe an unidentified star bearing 031°T at an observed altitude (Ho) of 49°26.0'. The chronometer reads 00h 23m 24s and is 01m 32s slow. What star did you observe?
N a. Peacock Y b. Schedar N c. Ankaa N d. Alioth 1953: You are downbound when you observe on your Mississippi River map a circel with black and white quadrants on the left bank. This indicates a __________.
Y a. river gage N b. daymark N c. control tower N d. information board 2578: On 12 November, you are taking a time tick using the 1600 GMT BBC Broadcast. You hear five pulses followed by a longer pulse. At the start of the longer pulse you start a stopwatch. You stop the stopwatch at the same time reading the chronometer with the following results: stopwatch 03m 19s, chronometer 15h 59m 46s. What is the chronometer error?
N a. 01m 14s slow N b. 03m 19s fast Y c. 03m 33s slow N d. 06m 54s slow 2674: You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?
Y a. 136° N b. 133° N c. 122° N d. 119° 2695: You are underway on course 017°T at a speed of 14.2 knots.
You sight a buoy bearing 025°T at a radar range of 3.7 miles at 1947. If you change course at 1953, what is the course to steer to leave the buoy abeam to starboard at 0.1 mile?
N a. 021°T N b. 024°T Y c. 027°T N d. 030°T 2781: Your engine speed is 9.8 mph and you estimate the current at 1.6 mph. What is your speed over the ground?
N a. 11.0 mph N b. 9.8 mph N c. 8.6 mph Y d. 8.2 mph 2867: Your vessel is on a course of 144°T at 20 knots. At 0022 a light bears 117.5°T, and at 0035 the light bears 099°T.
At what time and at what distance off will your vessel be when abeam of the light?
N a. 0044, 3.2 miles Y b. 0048, 4.3 miles N c. 0052, 5.1 miles N d. 0056, 6.0 miles 2887: Your vessel is steering 283°T at 10 knots. At 0538 a light bears 350°T, and at 0552 the same light bears 002°T. What will be your distance off abeam?
N a. 9.6 miles Y b. 10.3 miles N c. 10.7 miles N d. 11.3 miles 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 3077: If the speed necessary for reaching port at a designated time is 23.7 knots and the pitch of the propeller is 20.8 feet, how many revolutions per minute will the shaft have to turn, assuming a 7% negative slip?
Y a. 108 N b. 112 N c. 116 N d. 124 3094: If the pitch of the propeller is 26.7 feet, and the revolutions per day are 131,717, calculate the day's run allowing 4% negative slip.
N a. 555.2 miles N b. 578.4 miles Y c. 601.6 miles N d. 649.4 miles 3106: You are turning 85 RPM, with a propeller pitch of 19 feet, and an estimated slip of +3%. What is the speed of advance?
N a. 14.7 knots Y b. 15.5 knots N c. 16.4 knots N d. 17.1 knots 3452: You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What course should you steer?
N a. 027°T N b. 037°T Y c. 044°T N d. 054°T 10502: At 1239 your GPS indicates a position of LAT 36°55.2'N, LONG 75°33.1'W. You are on course 281° per standard magnetic compass at a speed of 9.2 knots. At 1318 your GPS indicates your position as LAT 36°54.8'N, LONG 75°39.8'W. What were the set and drift?
Y a. 130°T at 1.2 knots N b. 156°T at 0.6 knot N c. 352°T at 1.3 knots N d. 335°T at 1.0 knot 11307: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2031 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
N a. 8.2 knots N b. 9.3 knots Y c. 10.0 knots N d. 10.9 knots 13905: The Ruins (LAT 41°08.5'N, L0NG 72°08.8'W) is __________.
N a. a classic example of 18th century military fortifications N b. in an area of unpredictable, treacherous currents N c. restricted to surface navigation due to fishery conservation projects nearby Y d. prohibited to the public 15008: At 1920, the buoy forward of your starboard beam is __________.
N a. an interrupted quick flashing buoy N b. Hog Island Lighted Bell Buoy N c. South Light Buoy Y d. Sand Shoal Inlet Lighted Buoy "A" 15241: At 1155 your vessel's position is LAT 41°09.0'N, LONG 72°34.4'W. If you make good a course of 282°T and a speed of 10.0 knots, when will you arrive at New Haven Harbor Lighted Whistle Buoy "NH"?
N a. 1315 N b. 1320 Y c. 1325 N d. 1330 15543: At 2236 Falkner Island Light bears 024° true at a range of 8.6 nm
What was the speed made good along the track line since your 2200 fix?
N a. 12.7 knots Y b. 13.5 knots N c. 13.9 knots N d. 14.2 knots 15642: At 2030 you take the following radar ranges:
Race Rock Light 2.1 miles
Latimer Reef Light 6.4 miles
If you estimate an average current of 080°T at 1.5 knots,
which course will you steer per gyrocompass to leave Endeavor Shoals Gong Buoy bearing 270°T at 1.5 miles?
N a. 115° N b. 118° N c. 124° Y d. 127° 15816: At 0209, your position is LAT 41°01.8'N, LONG 72°40.8'W.
What course should you steer per standard magnetic compass to make good 278° magnetic? (assume no set and drift)
N a. 262.0°psc N b. 265.0°psc Y c. 275.5°psc N d. 280.5°psc 15816: At 0209, your position is LAT 41°01.8'N, LONG 72°40.8'W.
What course should you steer per standard magnetic compass to make good 278° magnetic? (assume no set and drift)
N a. 262.0°psc N b. 265.0°psc Y c. 275.5°psc N d. 280.5°psc 15840: You should expect to pass how far off buoy "12"?
Y a. 0.8 mile N b. 1.2 miles N c. 1.7 miles N d. 2.1 miles 16108: From your 0410 fix, what is the course per standard magnetic compass to the entrance to York Spit Channel between buoys "37" and "38"?
N a. 178° Y b. 176° N c. 156° N d. 152° 16318: What true course and speed did you make good between 0730 and 0900?
N a. 273°T, 8.7 knots Y b. 277°T, 8.4 knots N c. 279°T, 8.0 knots N d. 284°T, 7.5 knots 16459: What is the course to steer per gyro compass from the anchorage to point "A" if easterly winds are causing 3° of leeway?
N a. 178°pgc Y b. 181°pgc N c. 185°pgc N d. 189°pgc 16466: The abandoned lighthouse at Cape Henry is a(n) __________.
Y a. gray, pyramidal tower N b. mound of broken rubble N c. octagonal, black and white tower N d. black, skeleton structure 16838: At 0800 you obtain the following Loran-C readings:
9960-X-27101
9960-Y-41612
9960-Z-58737
What is your vessel's position?
N a. LAT 37°20.9'N, LONG 75°29.5'W Y b. LAT 37°21.0'N, LONG 75°32.0'W N c. LAT 37°19.8'N, LONG 75°30.6'W N d. LAT 37°20.8'N, LONG 75°31.2'W