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.
47: What is the distance in river miles, from the new mouth of the White River to the RR and Hwy bridge at Baton Rouge, LA?
N a. 384 miles N b. 370 miles Y c. 365 miles N d. 358 miles 161: At 1923, on September 21, you pass Bixby Towhead Light (mile 873.7 AHP). What was your average speed since leaving Cairo?
N a. 12.1 mph Y b. 11.3 mph N c. 10.5 mph N d. 9.2 mph 237: At 0845, you are on a course of 097°T, and Townshend Ledge Buoy "10A" is close abeam to port. With a westerly current of 1.2 knots, what speed will you have to turn for from your 0845 position in order to arrive abeam of Six Mile Reef Buoy "8C" at 1030?
N a. 12.1 knots Y b. 10.9 knots N c. 9.7 knots N d. 8.5 knots 273: If you correct for the current in the previous question (215°T at 0.5 knot) and maintain an engine speed of 7.5 knots, what is your ETA 0.5 mile south of buoy "W"?
N a. 1014 N b. 1018 N c. 1021 Y d. 1026 361: Which publication contains the specific information about navigating in York Spit Channel?
Y a. Coast Pilot N b. Light List N c. Chesapeake Bay Harbor- master's Regulations Manual N d. Navigator's Manual - Chesapeake Bay 474: You are on a great circle track departing from LAT 25°50.0'N, LONG 77°00.0'W and your initial course is 061.7°T. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W.
What is the distance along the great circle track between the point of departure and the vertex?
N a. 2735.1 miles Y b. 2664.9 miles N c. 2583.2 miles N d. 2420.0 miles 495: At 0815, visibility is excellent and you can see Montauk Point. Montauk Point is __________.
N a. low and rocky with scattered small pine trees N b. a low lying wetland Y c. a high sandy bluff N d. a flat wooded plain 521: The coastline between Point Judith and Watch Hill is __________.
N a. steep with rocky bluffs Y b. sandy and broken by rocky points N c. low and marshy N d. heavily forested 528: You depart LAT 38°12'S, LONG 12°06'W and steam 1543 miles on course 270°. What is the Longitude of arrival?
Y a. 44°49'W N b. 45°12'W N c. 45°37'W N d. 45°42'W 602: At 1845 zone time, on 24 October , you depart Bimini Island, LAT 25°50.0'N, LONG 77°00.0'W (ZD +5). You are bound for Bishop Rock, LAT 49°40.0'N, LONG 6°34.0'W, and you estimate your speed of advance at 13.6 knots. The distance is 3,491 miles. What is your estimated zone time of arrival at Bishop Rock?
N a. 0627, 3 November N b. 1642, 3 November N c. 0939, 4 November Y d. 1627, 4 November 661: Your voyage commences off Cape May, NJ, at LAT 38°40'N, LONG 74°00'W, for LAT 44°00'N, LONG 10°00'W. Sea ice is north of 45°N and west of 45°W. Extensive naval exercises will be conducted within a 150-mile radius of LAT 50°00'N,
LONG 35°00'W. Which statement about a direct great circle route is TRUE? (Use gnomonic tracking chart WOXZC 5274.)
N a. The latitude of the great circle vertex is above 50°N. Y b. You must plot a composite sailing to remain south of the ice limits. N c. The naval exercises will interfere with the direct great circle route. N d. The shifting shoals northwest of Sable Island will be a navigational hazard on the track line. 983: On 17 January , your 0730 zone time position was LAT 22°26.0'N, LONG 152°17.0'E. Your vessel was steaming on course 136°T at a speed of 17.0 knots. An observation of the Sun's lower limb was made at 1015 ZT. The chronometer read 00h 13m 23s and was slow 01m 49s. The observed altitude (Ho) was 40°25.7'. LAN occurred at 1222 zone time. The observed altitude (Ho) was 47°48.1'. What was the longitude of your 1200 zone time running fix?
N a. LONG 153°04.2'E N b. LONG 153°08.3'E Y c. LONG 153°13.1'E N d. LONG 153°18.6'E 1021: On 30 March , your 0145 DR position is LAT 29°30'S, LONG 122°45'E. You are on course 055°T at a speed of 22 knots. You observed 3 celestial bodies. Determine the latitude and longitude of your 0600 running fix.
N a. LAT 28°24.6'S, LONG 124°21.4'E Y b. LAT 28°39.9'S, LONG 124°18.6'E N c. LAT 28°41.5'S, LONG 124°41.5'E N d. LAT 29°20.1'S, LONG 123°41.0'E 1203: You are keeping ZD +4 on your vessel. On 21 June ,
at 0906 DST, your position is LAT 30°48.0'N,
LONG 71°00.0'W. You are on a course of 167°T at 15.2 knots. At what time will local apparent noon (LAN) occur ZT at your vessel? You are keeping DST.
N a. 1145 N b. 1202 N c. 1218 Y d. 1245 1675: On 28 November , your vessel's 0652 DR position is LAT 37°30'N, LONG 124°12'W, when an amplitude of the Sun is observed. The Sun's center is on the visible horizon and bears 103° per standard magnetic compass. Variation in the area is 16.3°E. The chronometer reads 02h 54m 18s and is 02m 06s fast. What is the deviation of the compass?
Y a. 2.5°W N b. 3.0°W N c. 2.0°E N d. 3.0°E 1704: Which of the following statements regarding buoys on the Mississippi River is TRUE?
N a. The positions of river buoys can be found in the latest edition of Light List-Vol. V. N b. The buoys are maintained on station year round. Y c. Buoy positions on the chart are approximate. N d. The buoys do not shift positions due to permanent moorings. 1764: The Gage at Red River Landing reads 43.4 feet. The low water reference plane (LWRP) for Red River Landing, LA. Is 10.6 ft. How many feet is this above the low water reference plane?
N a. 10.6 ft N b. 11.6 ft N c. 22.2 ft Y d. 32.8 ft 1909: On 22 March , your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 294°T at an observed altitude (Ho) of 33°02.7'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. What star did you observe?
N a. Regulus Y b. Menkar N c. Rigel N d. Alphard 2151: On 16 June , 0612 zone time, morning stars were observed. The vessel's position was LAT 27°23.0'S, LONG 56°22.0'W. The vessel is steaming at 16.0 knots on a course of 212°T. A sextant observation of the Sun's lower limb is made at 0850 zone time. The chronometer reads 00h 53m 19s, and the sextant altitude is 22°58.6'. The index error is 2.0' off the arc, and the chronometer error is 02m 43s fast. Your height of eye is 61.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 044.3° N b. 052.6° N c. 136.1° N d. 148.4° 2185: At 1000 ZT, on 21 October , your DR position is LAT 29°00'N, LONG 134°40'E. Determine the computed altitude (Hc) of the Sun for the assumed position (AP) nearest to the above given latitude and longitude, given a chronometer time of 01h 00m 00s.
N a. Hc 42°30.6' N b. Hc 42°32.1' N c. Hc 42°34.2' Y d. Hc 42°35.7' 2211: 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 2245: You are entering the channel at buoy 29 and turning for 9 knots. An easterly wind is causing 3°
of leeway and the current is 320°T at 1.2 knots. What true course should you steer to remain in the middle leg of York Spit Channel?
N a. 162°T Y b. 165°T N c. 168°T N d. 171°T 2320: 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 2463: You have steamed 491 miles at 20 knots and burning 568 barrels of fuel per day. You must decrease your consumption to 265 barrels per day with 313 miles left in your voyage. What must you reduce your speed (kts) to in order to burn this amount of fuel?
N a. 10.9 N b. 14.3 Y c. 17.1 N d. 18.2 2590: You have maneuvered for traffic and at 2215 you obtain the following radar information:
Middle Ground Light bearing 287° pgc @ 6.65 nm
What course must you steer to arrive at buoy "PJ", passing 0.5 nm off "Mt Misery Shoal"?
N a. 237° psc N b. 257° psc Y c. 261° psc N d. 265° psc 2664: You are on course 061°T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?
N a. 0854 Y b. 0859 N c. 0903 N d. 0906 2910: Your vessel is steaming on a course of 140°T at 15 knots. At 1530 a lighthouse bears 200°T. At 1550 it bears 249°T. What is your distance from the lighthouse at 1550?
N a. 1.15 miles N b. 4.60 miles N c. 5.45 miles Y d. 5.75 miles 3051: The propeller on a vessel has a diameter of 20.6 feet and a pitch of 23.4 feet. What would be the apparent slip if the vessel cruised 538 miles in a 24 hour day (observed distance) at an average RPM of 87?
Y a. -11.6% N b. +11.6% N c. -10.3% N d. +10.3% 3109: You are turning 90 RPM, with a propeller pitch of 24 feet, and an estimated slip of -3%. What is the speed of advance?
N a. 18.8 knots N b. 19.2 knots N c. 20.6 knots Y d. 21.9 knots 3761: Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 283°
T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?
N a. 5°E N b. 5°W N c. 8°E Y d. 8°W 10701: At 0947 your position is LAT 41°15.9'N, LONG 71°41.7'W. You are on course 182° per magnetic compass at 11.3 knots. At 1020 your position is LAT 41°09.2'N, LONG 71°40.6'W. What were the set and drift?
N a. 211°T at 1.0 knot Y b. 229°T at 2.0 knots N c. 058°T at 1.8 knots N d. 043°T at 1.1 knots 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 11909: Your position is 3 miles due east of Montauk Point Light. What is the true course to steer to arrive one mile due south of Block Island Southeast Point Light, if you are turning for 6.8 knots, the current is 330° at 1.2 knots, and a southerly wind causes 3° of leeway?
N a. 081°T Y b. 084°T N c. 087°T N d. 090°T 12702: You are on course 282° per standard magnetic compass when you take the following bearings: Point Judith Light - 073°psc Block Island North Light - 156°psc Watch Hill Point Light - 293°psc What is your position?
Y a. LAT 41°17.0'N, LONG 71°38.2'W N b. LAT 41°17.1'N, LONG 71°39.1'W N c. LAT 41°17.2'N, LONG 71°38.7'W N d. LAT 41°17.2'N, LONG 71°37.8'W 13306: In the northern quadrant of the circle surrounding Chesapeake Bay Entrance Junction Buoy CBJ the number 20 over a bracket appears 5 times. What do these indicate?
N a. Markers or piles are 20 feet above mean low water. N b. The maximum draft permitted in this area is 20 feet. Y c. Obstructions have been cleared by a wire drag to 20 feet. N d. Bench marks used to measure channel depths while dredging. 13807: The chart symbol depicted at LAT 40°58.5'N, LONG 72°43.4'W indicates a(n) __________.
N a. abandoned lighthouse N b. light ship N c. wreck with only its mast visible Y d. wreck showing a portion of the hull above the sounding datum 13909: The irregular black line around a charted light such as Race Rock Light indicates that it is __________.
N a. unwatched Y b. surrounded by riprap N c. a minor light N d. constructed on an artificial island 15014: If you make good 12 knots, what is the ETA at North Chesapeake Channel Entrance Buoy "NCA" (LL #375)?
N a. 2116 Y b. 2111 N c. 2106 N d. 2101 15062: If there is no current, what is the course per standard magnetic compass from your 0802 fix to a position 1.1 miles north of Falkner Island Light?
N a. 064°psc N b. 068°psc N c. 091°psc Y d. 095°psc 15066: If you correct for the current in the preceding question (035°T at 0.5 knot) and maintain an engine speed of 7.5 knots, what is your ETA 0.5 mile south of buoy "W"?
N a. 1016 Y b. 1021 N c. 1026 N d. 1030 15110: From your 1752 position, you steer 307°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light 232°pgc.
Chesapeake Bay Tunnel North Light 130°pgc.
What are the latitude and longitude of you 1805 position?
N a. LAT 37°06.1'N, LONG 76°08.1'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.9'N, LONG 76°07.7'W Y d. LAT 37°05.9'N, LONG 76°08.0'W 15140: At 2100 your position is 40°44.1'N, 72°07.6'W. From this position, at which time will Montauk Point Light become visible if the luminous range of the light is 8 miles?
N a. 2215 Y b. 2221 N c. 2227 N d. 2235 15210: What course should you steer per standard magnetic compass in order to navigate down the center of York River Entrance Channel (ignore set and drift)?
N a. 139°psc Y b. 141°psc N c. 147°psc N d. 149°psc 15346: At 1942 Point Judith bears 030°T and has a range of 3.6 miles and Sandy Point has a range of 5.3 miles. What was your speed made good from your 1850 position?
N a. 12.5 knots Y b. 13.0 knots N c. 13.5 knots N d. 14.0 knots 15414: 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?
Y a. 156°T N b. 164°T N c. 183°T N d. 190°T 15459: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
Y a. LAT 36°59.5'N, LONG 76°18.4'W N b. LAT 36°59.0'N, LONG 76°21.6'W N c. LAT 36°59.0'N, LONG 76°19.6'W N d. LAT 36°55.5'N, LONG 76°18.6'W 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) 15743: At 2155 Montauk Point Light bears 249°T, Watch Hill Point Light bears 335°T, and Block Island North Light bears 045°
T. At this time, you wish to change course to 288°T. The current has a set of 355°T and a drift of 2.0 knots. If your vessel is turning RPM's for 9 knots, what course must you steer in order to make your desired course good?
Y a. 276°T N b. 280°T N c. 284°T N d. 288°T 15757: If you change course at 0610, what is the course to steer per gyro compass to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 072°pgc Y b. 076°pgc N c. 080°pgc N d. 084°pgc 15757: If you change course at 0610, what is the course to steer per gyro compass to a point where Little Gull Island Light bears 180°T at 0.7 mile (Point "A")?
N a. 072°pgc Y b. 076°pgc N c. 080°pgc N d. 084°pgc 15915: At 0925, you obtain the following radar information:
Falkner Island Light bearing 252° true @ 1.65 nm
If you correct for a current setting 215°T at 0.5 knot,
what course will you steer from the 0925 position to arrive at a position 0.5 mile south of Long Sand Shoal West End Horn Buoy "W"?
Y a. 089°T N b. 093°T N c. 096°T N d. 102°T 16419: You estimate the current to be 160°T at 1.2 knots. What should your course and speed be in order to make good 000°
T at 10 knots?
Y a. 358°T at 11.1 knots N b. 358°T at 09.8 knots N c. 002°T at 11.2 knots N d. 002°T at 09.9 knots