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.
149: Your engines are turning for 8.2 mph. You estimate the current at 1.5 mph. What is your speed over the ground?
Y a. 9.7 mph N b. 8.8 mph N c. 8.2 mph N d. 6.7 mph 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 167: The Arkansas City Yellow Bend revetment on the LMR extends from mile __________.
Y a. 555.5-549.7 RDB N b. 549.0-548.5 RDB N c. 556.9-554.9 LDB N d. 548.5-546.5 LDB 184: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________.
N a. 40 feet (12.2 meters) Y b. 50 feet (15.2 meters) N c. 60 feet (18.3 meters) N d. 70 feet (23.2 meters) 396: A vessel at LAT 10°22.0'S, LONG 7°18.0'E, heads for a destination at LAT 6°52.0'N, LONG 57°23.0'W. Determine the true course and distance by Mercator sailing.
N a. 285°T, 3825.3 miles Y b. 285°T, 4025.7 miles N c. 296°T, 3825.3 miles N d. 296°T, 4025.7 miles 434: As you enter the New Haven Outer Channel, you sight the outer range markers in line directly ahead. Your heading at this time is 347°psc. What is your compass deviation by observation?
N a. 4.5°West N b. 3.5°West N c. 3.0°East Y d. 0.5°East 464: Determine the great circle distance and initial course from LAT 33°53.3'S, LONG 18°23.1'E to LAT 40°27.0'N, LONG 73°49.4'W.
N a. 6648.0 miles, 298.7°T N b. 6743.5 miles, 302.7°T N c. 6750.8 miles, 235.5°T Y d. 6763.0 miles, 304.5°T 557: The south shore of Long Island Sound near your position is __________.
N a. high with numerous cliffs Y b. fringed with rock shoals N c. backed by marshes and wooded uplands N d. low and marshy 652: On a voyage via the southern tip of Nova Scotia (LAT 43°20'N, LONG 65°35'W) you wish to sail the shortest route to La Coruna, Spain (LAT 43°20'N, LONG 8°24'W). Which of the following will require you to plot a composite sailing? (Use gnomonic tracking chart WOXZC 5274)
N a. Shoals extending 15 miles from Sable Island N b. Sea ice reported 68 miles ESE of St. John's, Newfoundland Y c. Icebergs reported extending west to west-northwest from LAT 47°00'N, LONG 35°00'W N d. Naval exercises using live ammunition being conducted within a 150 mile radius of LAT 49°00'N, LONG 20°00'W 656: You are planning a voyage by great circle to Reykjavik, Iceland, via Cape Race, Newfoundland, LAT 46°30'N, LONG 53°00'W. Which statement is TRUE? (Use gnomonic tracking chart WOXZC 5274)
N a. The track line will be concave to Cape Farewell (Kap Farvel) when plotted on a Mercator chart. Y b. You will reach the northernmost latitude in the vicinity of Reykjavik. N c. The distance is measured using the length of a degree of latitude at the mid-latitude and mid-longitude position. N d. The Northern Hemisphere vertex is in the vicinity of 49°W longitude. 832: On 19 November , in DR position LAT 20°03.5'N, LONG 129°48.0'W, you take an ex-meridian observation of the planet Venus at upper transit. The chronometer time of the sight is 11h 29m 44s, and the chronometer error is 01m 23s slow. The sextant altitude (hs) is 43°54.3'. The index error is 2.0' off the arc, and your height of eye is 48 feet. What is the latitude at meridian transit?
N a. 20°08.2'N Y b. 19°58.0'N N c. 19°53.2'N N d. 19°50.6'N 982: On 15 August , your 0512 zone time position was LAT 29°18.0'N, LONG 57°24.0'W. Your vessel was steaming on course 262°T at a speed of 20.0 knots. An observation of the Sun's lower limb was made at 0824 ZT. The chronometer read 00h 22m 24s and was slow 01m 34s. The observed altitude (Ho) was 38°16.7'. LAN occurred at 1204 zone time.
The observed altitude (Ho) was 74°58.0'. What was the longitude of your 1204 zone time running fix?
N a. LONG 59°52.0'W N b. LONG 59°54.0'W Y c. LONG 59°58.5'W N d. LONG 60°02.0'W 1263: On 18 October , your 1330 ZT DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at a speed of 20 knots. What will be the zone time of sunset at your vessel?
N a. 1715 N b. 1729 Y c. 1742 N d. 1751 1286: 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. 16.5 mph Y b. 13.5 mph N c. 10.5 mph N d. 7.5 mph 1287: As you approach Buckridge Light (mile 412.5 AHP),
which type of daymark would you see on the light structure?
N a. Red diamond N b. Red triangle Y c. Green square N d. Green diamond 1341: What is the distance from the River Cement Co. Dock to the mouth of the Ohio River?
N a. 718.8 miles Y b. 780.8 miles N c. 953.5 miles N d. 981.5 miles 1363: You are taking a time tick using the 1400 signal from Buenos Aires, Argentina. You hear a 0.4 second dash followed by a series of dots, noting that the 29th and the 56th to 59th dots are omitted. At the start of the following 0.4 second dash (which is followed by an 8 second pulse), the comparing watch reads 02h 00m 15s. When compared to the chronometer, the comparing watch reads 02h 01m 29s, and the chronometer reads 01h 59m 50s. What is the chronometer error?
N a. 0m 15s fast N b. 1m 14s fast Y c. 1m 24s slow N d. 1m 54s slow 1414: What is the mile point of the Fulton Gage?
N a. 598 AHP N b. 632 AHP N c. 687 AHP Y d. 778 AHP 1424: You pass Springfield Bend Lt. (mile 244.8 AHP) at 1242, on 17 October, and estimate the current will average 2.5 mph for the remainder of your trip. What is your ETA at the mouth of the Ohio River if you are making turns for 10.5 mph?
N a. 1905, 19 October N b. 2122, 19 October Y c. 0519, 21 October N d. 0847, 21 October 1456: On 12 September , your 0736 zone time DR position is LAT 28°34.0'S, LONG 174°49.0'E. At that time, you observe the Sun bearing 084° per standard magnetic compass (psc). The chronometer reads 07h 38m 11s, and the chronometer error is 01m 46s fast. The variation is 11°W. What is the deviation of the standard magnetic compass?
N a. 2.9°W Y b. 3.2°E N c. 3.9°E N d. 4.7°W 1652: On 16 April , in DR position LAT 28°07.0'N, LONG 81°47.0'W, you observe an amplitude of the Sun. The Sun's center is on the visible horizon and bears 073.5°psc. The chronometer reads 10h 53m 41s and is 02m 23s slow. Variation in the area is 11°E. What is the deviation of the magnetic compass?
N a. 4.5°E N b. 4.9°W N c. 6.1°E Y d. 6.5°W 1688: As you approach Ashland Light (mile 378.1 AHP), which type of daymark would you see on the light structure?
N a. Green square N b. Green triangle N c. Red diamond Y d. Red triangle 1701: The latest available information on the channel conditions above Baton Rouge that includes the latest buoy information, as well as recommended courses, is found in the __________.
N a. Corps. of Engineers maps N b. Waterways Journal Y c. Local Notice to Mariners N d. Sailing Directions 1885: On 26 November , your 0535 DR position is LAT 27°18.9'S, LONG 30°18.4'E. You observe an unidentified planet bearing 037°T at an observed altitude (Ho) of 50°06.4'. The chronometer reads 03h 33m 16s and is 01m 48s slow. What planet did you observe?
N a. Saturn N b. Jupiter Y c. Mars N d. Venus 2126: At 2350 on 23 June, you are at mile 610.5 AHP when you see about a mile ahead lights on the water near the left bank. What might you see when you come abreast of these lights?
N a. Privately maintained buoys at a yacht club N b. Government buoys marking the Hurricane Point dikes Y c. Barges moored at the Dennis Landing Terminal N d. A pipeline discharging dredge spoil 2213: Controlling depth of a channel __________.
Y a. is the least depth within the limits of the channel N b. is the greatest depth within the limits of the channel N c. permits the safe use of the channel to drafts of more than that depth N d. is the designed dredging depth of a channel constructed by the U.S. Army Corps. of Engineers 2240: At 1542 ZT, on 23 October , in DR position LAT 37° 28.5'N, LONG 156° 17.3'E, you observe an amplitude of the Moon. The center of the Moon is on the visible horizon and bears 282.5°psc. The variation is 0.0°. What is the deviation?
Y a. 2.2°E N b. 2.2°W N c. 1.2°E N d. 1.2°W 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 2592: What chart would you need to enter Port Jefferson Harbor?
Y a. 12362 N b. 12364 N c. 12369 N d. 12370 3622: Your vessel is steering a course of 337°psc. Variation for the area is 13°W, and deviation is 4°E. The wind is from the south, producing a 3° leeway. Which true course are you making good?
N a. 325°T N b. 328°T Y c. 331°T N d. 349°T 10105: What is the course psc from Chesapeake Light to North Chesapeake Entrance Buoy NCA?
N a. 313°psc N b. 317°psc Y c. 321°psc N d. 325°psc 11106: What is the height of the tide at Great Salt Pond, on Block Island, at the morning high water (daylight savings time) on 1 July 1983?
N a. 1.3 feet Y b. 2.3 feet N c. 3.2 feet N d. There is no morning high water 11306: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 1950 your position is LAT 36°59.5'N, LONG 75°37.0'W. What is the speed made good?
N a. 5.6 knots N b. 8.2 knots N c. 9.1 knots Y d. 10.9 knots 12501: You are on course 056° per standard magnetic compass when you take the following bearings: Cape Henry Light 262°psc Cape Charles Light 344°psc Chesapeake Light 125°psc What is your position?
N a. LAT 36°58.4'N, LONG 75°49.1'W N b. LAT 36°58.1'N, LONG 75°50.0'W N c. LAT 36°57.8'N, LONG 75°49.2'W Y d. LAT 36°57.6'N, LONG 75°49.8'W 12607: You are on course 240° per standard magnetic compass when you take the following bearings: Old Field Point Light 253°psc New Haven Light 357°psc Mattituck Inlet Light 126°psc What is your position?
N a. LAT 41°04.5'N, LONG 72°49.2'W N b. LAT 41°05.7'N, LONG 72°50.2'W Y c. LAT 41°05.9'N, LONG 72°53.1'W N d. LAT 41°08.6'N, LONG 72°53.5'W 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 15070: As you enter New London Harbor, you are steering on the entrance range. The lights are in line over the bow as you are heading 352°pgc. What is the gyro error?
Y a. 2°E N b. 0° N c. 1°W N d. 3°W 15107: At 1752, your position is LAT 37°04.3'N, LONG 76°06.4'W. On a flood current you should expect to be set to the __________.
Y a. north northwest N b. south southwest N c. east southeast N d. east 15109: What is the average velocity of the maximum flood current at the Tail of the Horseshoe?
N a. 0.6 knot Y b. 0.9 knot N c. 1.3 knots N d. 1.6 knots 15207: What is the maximum allowable speed of vessels underway up river from Tue Marshes Light?
N a. 6 knots N b. 8 knots N c. 10 knots Y d. 12 knots 15260: From your 0830 position, you wish to make good 097°T. There is no current, but a southerly wind is producing 4°
leeway. What course should you steer per standard magnetic compass in order to make good your true course?
N a. 101°psc N b. 108°psc N c. 110°psc Y d. 115°psc 15359: Based on your running fix, you __________.
N a. have a head current Y b. have a following current N c. are being set to the north N d. are not affected by a current 15413: From your 1915 fix you come right and steer a course of 200°T. At 2000, your position is LAT 37°05.5'N, LONG 76°07.0'W. Your intention is to pass through Chesapeake Channel. If there are no set and drift, what course would you steer per standard magnetic compass to make good a course of 145°T?
N a. 134° N b. 139° N c. 151° Y d. 156° 15538: At 2127 you take the following round of bearings:
Old Field Point Light 224.0°pgc
Middle Ground Light 320.5°pgc
Stratford Point Light 348.0°pgc
Based on the above fix, which statement is TRUE?
Y a. At 2127, your fathometer reads about 17 fathoms. N b. You are south of Mt. Misery Shoal. N c. You will experience a 1 knot westward setting ebb current N d. You have lost sight of the red light at Old Field Point. 15713: What do the dotted lines around Goose Island and Kimberly Reef represent?
N a. Limiting danger N b. Breakers Y c. Depth contours N d. Tide rips 15720: The red sector of New London Harbor Light covers from __________.
N a. 040° - 310° Y b. 000° - 041° N c. 208° - 220° N d. 204° - 239° 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 15907: At 0720, you are in the outer channel between buoy "1" and buoy "2" and change course to pass Townshend Ledge Lighted Gong Buoy "10A" abeam to port at 200 yards. What is your ETA off the buoy?
N a. 0734 Y b. 0738 N c. 0741 N d. 0745 15960: From your 1752 position, you steer 313°pgc at 9 knots. At 1805, you obtain the following visual bearings:
Old Pt. Comfort Light - 238°pgc.
Chesapeake Bay Tunnel North Light - 136°pgc.
What are the latitude and longitude of your 1805 position?
Y a. LAT 37°05.9'N, LONG 76°08.0'W N b. LAT 37°06.0'N, LONG 76°08.4'W N c. LAT 37°05.0'N, LONG 76°08.7'W N d. LAT 37°06.1'N, LONG 76°08.1'W 16267: When Cape Henry Light is abeam, what is the approximate distance to Yorktown, VA?
Y a. 34 miles N b. 42 miles N c. 55 miles N d. 58 miles 16644: Visibility becomes variable in patchy fog and you maintain 5 knots speed. At 0610 you sight Montauk Point Light bearing 239°pgc, and at 0630 you sight Watch Hill Point Light bearing 333°pgc. What is the position of your 0630 running fix?
Y a. LAT 41°08.3'N, LONG 71°45.4'W N b. LAT 41°08.2'N, LONG 71°45.8'W N c. LAT 41°08.1'N, LONG 71°45.1'W N d. LAT 41°08.0'N, LONG 71°45.2'W