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.
89: In high water conditions, which publication would you consult for the latest information on buoys between Baton Rouge and Cairo?
N a. Army Corps. of Engineers Navigation Chart N b. U.S.C.G. Light List Y c. U.S.C.G. Local Notice to Mariners N d. List of Buoys and Daymarks 316: From your 1830 fix, you continue south on a course of 150°T turning RPMs for 6 knots. You encounter a flood current in the direction of 330°T at 2 knots. Adjusting your course for set and drift, which course would you steer to make good a course of 150°T while turning RPMs for 6 knots?
N a. 162°T N b. 158°T Y c. 150°T N d. 144°T 339: The coastline by Cape Henry is best described as __________.
N a. rocky with pine scrubs N b. low wetlands Y c. sandy hills about eighty feet high N d. low and thinly wooded with many beach houses 399: A vessel at LAT 11°22'S, LONG 009°18'E heads for a destination at LAT 06°52'N, LONG 57°23'W. Determine the true course and distance by Mercator sailing.
N a. 296°T, 3,825.3 miles N b. 296°T, 4,154.2 miles N c. 285°T, 3,825.3 miles Y d. 285°T, 4,154.2 miles 410: A vessel steams 666 miles on course 135°T from LAT 40°24.0'N, LONG 74°30.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 32°30.0'N, LONG 64°41.0'W Y b. LAT 32°33.0'N, LONG 64°46.0'W N c. LAT 32°36.0'N, LONG 64°49.0'W N d. LAT 32°39.0'N, LONG 64°53.0'W 456: At 0630, you pass Buoy "PI" close abeam on the starboard side. You are steering 078°T and are headed directly toward Race Rock Light. At 0654, Little Gull Island Light is bearing 207°T and Race Rock Light is bearing 072°T. What is your 0654 position?
N a. LAT 41°13.6'N, LONG 72°03.3'W Y b. LAT 41°14.0'N, LONG 72°05.3'W N c. LAT 41°14.7'N, LONG 72°06.8'W N d. LAT 41°19.0'N, LONG 72°05.2'W 482: The great circle distance from LAT 25°50'N, LONG 77°00'W to LAT 35°56'N, LONG 06°15'W is 3616 miles, and the initial course is 061.7°T. Determine the longitude of the vertex, given the latitude of the vertex as 37°34.9'N.
N a. 25°49.8'W N b. 25°53.2'W Y c. 25°59.0'W N d. 26°03.4'W 492: At 0748, you change course to 160°T. What loran reading can you follow to remain on this course?
N a. 9960-W-14660.0 Y b. 9960-W-14651.0 N c. 9960-Y-43943.8 N d. 9960-Y-43852.0 514: The shoreline along Rocky Point should give a good radar return because __________.
Y a. the shore is bluff and rocky N b. of offshore exposed rocks N c. submerged reefs cause prominent breakers N d. the lookout tower is marked with radar reflectors 550: You observe the star Antares at a sextant altitude (hs) of 38°18.7' on 28 February . The index error is 2.4' on the arc. The height of eye is 40 feet (12.2 meters). What is the observed altitude (Ho)?
N a. 38°07.5' Y b. 38°09.0' N c. 38°10.5' N d. 38°12.5' 575: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"?
N a. 341° Y b. 339° N c. 322° N d. 319° 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. 629: You are on a voyage from Belem, Brazil, to Mobile, AL. The distance from departure to arrival is 3150 miles. The speed of advance is 14.0 knots. You estimate a layover in San Juan, Puerto Rico, of 17.5 hours. If you took departure at 2200 (ZD +3h 30m), 26 February , what was your ETA (ZD +6) at Mobile?
N a. 1900, 8 March Y b. 2200, 8 March N c. 0400, 9 March N d. 2200, 9 March 669: You are planning a voyage from Cape May (LAT 38°45'N, LONG 74°45'W) to Lisbon (LAT 38°37'N, LONG 09°45'W). Which of the following is TRUE? (Use gnomonic chart WOXZC 5274)
N a. Because the latitudes are almost the same, a great circle track approximates a parallel sailing. Y b. The northern hemisphere vertex is approximately at longitude 42°26'W. N c. The distance is measured by using the length of one degree of the meridian at the position of the vertex. N d. A composite sailing must be plotted to remain south of a limiting latitude of 44°N. 750: On 28 October , at 1754 ZT, your vessel's DR position is LAT 28°30'N, LONG 63°24'W. At this time, you obtain a sextant altitude (hs) of Polaris reading 28°42.6', with an index error of 2.4' on the arc. Your chronometer reads 09h 50m 00s, and is 4m 14s slow. What is your latitude by Polaris, given a height of eye of 28 feet (8.5 meters)?
N a. 28°25.2'N N b. 28°30.6'N Y c. 28°34.9'N N d. 28°41.3'N 1007: On 30 July , your 1030 ZT DR position is LAT 17°46'N, LONG 139°30'W. You are on course 129°T, speed 24 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1220 138°25.0' N 18°22.3' 88°43.3'
1226 139°55.0' N 18°22.2' 88°24.0'
N a. LAT 17°24.0'N, LONG 138°59.8'W N b. LAT 17°21.6'N, LONG 138°56.2'W N c. LAT 17°18.7'N, LONG 139°07.6'W Y d. LAT 17°15.1'N, LONG 139°00.0'W 1082: On 20 Nov. , your 1030 ZT DR position is LAT 27°16.0'N, LONG 157°18.6'E. You are on course 060°T at a speed of 20 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 1200 running fix. NP-0012
N a. LAT 27°16.8'N, LONG 157°30.5'E N b. LAT 27°22.6'N, LONG 157°37.8'E Y c. LAT 27°29.7'N, LONG 157°43.0'E N d. LAT 27°33.4'N, LONG 157°48.2'E 1088: On 9 June , your 0000 DR position is LAT 26°14.0'S, LONG 176°38.1'E. You are on course 223°T, speed 17.8 knots. You observed 4 celestial bodies. Determine the latitude and longitude of your 0630 running fix.
Y a. LAT 27°44.7'S, LONG 174°57.1'E N b. LAT 27°46.2'S, LONG 175°03.0'E N c. LAT 27°41.2'S, LONG 175°01.2'E N d. LAT 27°38.5'S, LONG 175°06.3'E 1091: On 10 August , your 0430 ZT position is LAT 29°56.7'S, LONG 139°11.0'E. Your course is 321°T, speed 18.2 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0500 running fix. NP-0021
N a. LAT 29°46.0'S, LONG 138°54.0'E Y b. LAT 29°49.2'S, LONG 138°57.0'E N c. LAT 29°56.0'S, LONG 139°03.8'E N d. LAT 30°07.5'S, LONG 138°55.2'E 1194: On 16 January your 0930 ZT DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)?
Y a. 1145 N b. 1148 N c. 1152 N d. 1156 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 1766: What type of daymark will you see as you approach Black Hills Light (mile 337.7 AHP)?
N a. Private aid - no daymark N b. Red square N c. Red diamond Y d. Red triangle 1950: The Greenville Gage reads 10.6 feet. The high point of your towboat is 54 feet above water. What is the vertical
clearance as you pass under the Greenville Highway Bridge?
N a. 44.4 feet N b. 54.2 feet Y c. 65.4 feet N d. 75.4 feet 2053: At 2342, on 25 August, 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 9 mph?
Y a. 1.8 mph N b. 2.1 mph N c. 4.4 mph N d. 5.6 mph 2207: As you pass under the Natchez-Vidalia Dual Bridge, the gage on the bridge reads 8.9 ft. If the highest point on your vessel is 54 ft. above the water, what is your vertical clearance?
Y a. 63.1 feet N b. 65.3 feet N c. 67.2 feet N d. 122.0 feet 2284: You observe the lower limb of the Sun at a sextant altitude (hs) of 35°26.3' on 25 June . The index error is 1.5' on the arc. The height of eye is 58 feet (17.6 meters). What is the observed altitude (Ho)?
N a. 35°28.2' N b. 35°29.9' Y c. 35°32.1' N d. 35°36.7' 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 2655: You are steering 078°T, and a light is picked up dead ahead at a distance of 15.6 miles at 2316. You change course to pass the light 4.5 miles off abeam to port. If you are making 17 knots, what is your ETA at the position 4.5 miles off the light?
N a. 0006 Y b. 0009 N c. 0012 N d. 0015 2720: Which company utility crossing is at mile 529.7 AHP?
Y a. Texas Gas Transmission Corp. submerged gas pipeline N b. Tennessee Gas Co. submerged gas pipeline N c. ANR Pipeline Co. submerged gas pipeline N d. Trunkline Gas Co. submerged gas pipeline 2896: You are steaming on a course of 133°T at 16 knots. At 2216 you observe a lighthouse bearing 086°T. At 2223 the lighthouse bears 054°T. What is your distance off at the second bearing?
N a. 1.7 miles N b. 2.0 miles N c. 2.3 miles Y d. 2.6 miles 3294: Your vessel consumes 268 barrels of fuel per day at a speed of 19.0 knots. What will be the fuel consumption of your vessel at 15.0 knots?
Y a. 132 bbls N b. 167 bbls N c. 212 bbls N d. 243 bbls 3314: You have steamed 150 miles and consumed 17 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 350 miles?
N a. 12.82 tons N b. 29.41 tons N c. 34.00 tons Y d. 39.66 tons 3471: You are underway on course 172°T at 18.5 knots. The current is 078°T at 2.8 knots. What is the speed being made good?
Y a. 18.5 knots N b. 19.0 knots N c. 19.5 knots N d. 20.0 knots 3628: Your vessel is steering course 352°psc, variation for the area is 11°E, and deviation is 9°W. The wind is from the northeast, producing a 1° leeway. What true course are you making good?
N a. 349°T N b. 351°T Y c. 353°T N d. 355°T 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° 11012: Which statement is FALSE with regard to Plum Island Harbor West Dolphin Light?
N a. The light is maintained from sundown to 0130 daily. Y b. The light is white. N c. The light is maintained by the U.S. Dept. of Agriculture. N d. The light is located on a dolphin. 11906: 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 8.7 knots, the current is 130° at 1.2 knots, and a northerly wind causes 3° of leeway?
N a. 112°T N b. 108°T N c. 105°T Y 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 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 14602: Where would you tune your radio to receive a VHF-FM weather broadcast for the Columbia River in the vicinity of Government Island?
N a. KIH-32 - 162.40 MHz N b. KBA-99 - 162.40 MHz Y c. KEB-97 - 162.55 MHz N d. KEC-62 - 162.55 MHz 15230: What is the distance from Cairo Point, IL, to Arkansas City?
N a. 28 miles N b. 110 miles N c. 292 miles Y d. 400 miles 15341: If your fathometer is set on fathoms, what should your fathometer read at 1750?
Y a. 8.5 fathoms N b. 10.2 fathoms N c. 14.7 fathoms N d. 51.0 fathoms 15420: You are entering Norfolk Harbor and have just passed Craney Island. Which chart should you use for your final approach into Norfolk Harbor?
N a. 12223 N b. 12238 N c. 12248 Y d. 12253 15569: The coastline between Point Judith and Watch Hill is __________.
N a. marked by waterfalls from the highland ponds N b. low and marshy Y c. sandy and broken by rocky points N d. heavily forested 15718: Your vessel is entering New London Harbor Channel. If there is no current, what should you steer per gyro compass to stay on the range?
Y a. 351° N b. 354° N c. 357° N d. 006° 15724: You pass Morrison Towhead Light (mile 890.5 AHP) at 1723. What was your average speed since leaving Cairo?
N a. 7.5 mph N b. 7.8 mph Y c. 8.5 mph N d. 8.8 mph 15764: From your 0715 position, you set a course of 085°T. At 0745, you take the following bearings:
Race Rock Light 274°pgc
Watch Hill Point Light 045°pgc
Fisher's Island East Harbor Cupola 006°pgc
What was the current encountered between 0715 and 0745?
N a. Set 030°T, drift 0.4 knot Y b. Set 070°T, drift 0.7 knot N c. Set 210°T, drift 0.8 knot N d. Set 238°T, drift 1.0 knot 16015: By 0430, the wind has increased, and the visibility cleared due to passage of a front. You estimate 3° leeway due to NW'ly winds. What is the course per gyrocompass to pass 1.2 miles due south of Twenty-eight Foot Shoal Lighted Buoy "TE"?
Y a. 080° N b. 083° N c. 086° N d. 090° 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 16120: At 0812, you are on course 132°T. The standard magnetic compass reads 135°. What should you conclude?
N a. The deviation table is correct for that heading. N b. You should adjust the magnetic compass. Y c. Your compass may be influenced by a local magnetic disturbance. N d. The deviation is increasing as you go south. 16358: What is the distance from the anchorage to point "A"?
N a. 13.9 miles Y b. 15.1 miles N c. 15.9 miles N d. 17.0 miles 16412: Shortly after getting underway, your heading is 097° per standard magnetic compass, and you sight Stonington Outer Breakwater Light in line with Stonington Inner Breakwater Light bearing 000° per gyrocompass. Which statement is TRUE?
Y a. The gyro error is 2.5°W. N b. The variation is 2°E. N c. The compass error is 16°W. N d. The deviation is 2°W. 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.