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.
265: At 0740, you take the following Radar Ranges:
Branford Reef Light @ 2.5 nm
New Haven Light @ 3.9 nm
What is your position?
Y a. LAT 41°12.4'N, LONG 72°51.5'W N b. LAT 41°12.6'N, LONG 72°51.8'W N c. LAT 41°12.7'N, LONG 72°51.9'W N d. LAT 41°12.2'N, LONG 72°52.0'W 322: From your 2200 fix, you steer course 288°T to travel up the Thimble Shoal North Auxiliary Channel. If you are making good 6.0 knots, at what time would you expect to pass buoy "18" at the west end of the channel? (There are no set and drift.)
N a. 2355 Y b. 2344 N c. 2335 N d. 2324 336: What speed have you made good from 1710 to 1810?
Y a. 6.3 knots N b. 5.5 knots N c. 4.9 knots N d. 4.2 knots 484: You are on a great circle track departing from position LAT 25°50'N, LONG 77°00'W. The position of the vertex is LAT 37°35.6'N, LONG 25°57.8'W. The distance along the great circle track from the vertex to a point (X) is 600 miles westward. Determine the position of point (X) on the great circle track.
N a. LAT 36°47.5'N, LONG 38°21.8'W N b. LAT 36°50.4'N, LONG 38°25.6'W Y c. LAT 36°55.6'N, LONG 38°30.0'W N d. LAT 37°02.3'N, LONG 38°34.4'W 493: At 0815, Montauk Pt. Light House is bearing 167°T, Shagwong Pt. has a radar range of 4.5 miles, and Cerberus Shoal "9" Buoy is bearing 284°T. If the engine is making turns for 10 knots, what was the set and drift of the current since 0748?
N a. Set 065°T, drift 1.1 knots N b. Set 065°T, drift 2.4 knots Y c. Set 245°T, drift 2.4 knots N d. Set 245°T, drift 1.1 knots 494: What action should you take to compensate for the above current?
N a. Continue on the same course and speed. N b. Alter your course to the right. N c. Slow to 8.5 knots. Y d. Alter your course to the left. 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° 618: Your vessel departs Seattle at 1010 zone time (ZD +8), on 28 May, bound for Apra, Guam (ZD -10). The distance by great circle is 4,948 miles, and you estimate that you will average 18.5 knots. What is your estimated zone time of arrival?
Y a. 0737, 9 June N b. 1737, 9 June N c. 1937, 9 June N d. 0737, 10 June 680: On which voyage would a great circle track provide a significant savings in distance to steam, when compared to a rhumb line track? (Use gnomonic tracking chart WOXZC 5270.)
N a. Valdez, AK, to the Marquesas Islands (LAT 8°00'S, LONG 140°00'W) N b. San Francisco to Kodiak, AK N c. Christmas Island (LAT 2°00'N, LONG 157°30'W) to Singapore via LAT 3°00'N, LONG 126°00'E Y d. Guam (LAT 14°00'N, LONG 145°00'E) to Seattle via LAT 47°30'N, LONG 125°30'W 994: At 0600 zone time, on 16 March , your DR position is LAT 20°10.0'N, LONG 81°30.0'W. You are steering course 300°T. The speed over the ground is 10 knots. You observed 3 morning sun lines. Determine the latitude and longitude of your 1130 running fix? NP-0004
N a. LAT 20°28.5'N, LONG 82°12.6'W N b. LAT 20°32.0'N, LONG 82°16.4'W Y c. LAT 20°39.0'N, LONG 82°22.9'W N d. LAT 20°42.5'N, LONG 82°26.2'W 1120: At 0850, 4 January, you pass the Gage at Natchez, MS which reads 26.8 feet. The low water reference plane (LWRP) for Natchez is 6.1 feet. What is the water level in relation to the low water reference plane?
Y a. 20.7 ft above N b. 20.7 ft below N c. 32.9 ft above N d. 32.9 ft below 1178: On 27 August , your 0900 zone time DR position is LAT 24°25.0'N, LONG 94°20.0'W. Your vessel is on course 071°T at a speed of 20.0 knots. What is the zone time of local apparent noon (LAN)?
Y a. 1214 N b. 1208 N c. 1206 N d. 1158 1218: It is 22 February , and you are keeping zone time +12. You are on course 267°T, speed 22 knots. Your 0800 DR position is LAT 28°15.0'N, LONG 179°18.0'W. What is the time of the second estimate of LAN by ship's clocks?
N a. 11h 17m 02s N b. 11h 50m 42s N c. 12h 16m 01s Y d. 12h 18m 00s 1229: Which type of daymark would you see on the Belle Island Corner Lt. at mile 458.6 AHP?
N a. Green - Diamond N b. Green - Square Y c. Red - Diamond N d. Red - Triangle 1294: What are the light characteristics of Greenwood Light (mile 288.6 AHP)?
N a. Fixed red light Y b. 2 red flashes every 5 seconds N c. 1 red flash every 4 seconds N d. 2 white flashes every 4 seconds 1295: After passing Wilkinson Lt. you see a flashing amber light on the right descending bank ahead. The flashing light indicates that you should __________.
N a. stay in the deepest water N b. slow down due to dredging operations Y c. keep as close to the left descending bank as safety permits N d. keep as close to the right descending bank as safety permits 1484: On 7 December , your vessel's 0835 zone time DR position is LAT 28°30.0'N, LONG 125°39.3'W, when an azimuth of the Sun is observed. The chronometer time of the sight is 04h 34m 48s, and the Sun is bearing 113° per standard magnetic compass. The chronometer error is 01m 24s slow, and the variation in the area is 13.0°E. What is the deviation of the standard magnetic compass?
N a. 0.7°E N b. 1.0°W Y c. 2.3°E N d. 3.0°W 1492: On 22 February , your 2045 ZT position is LAT 33°19'N,
LONG 52°06'W. You observe Polaris bearing 358.1°pgc. At the time of the observation the helmsman noted that he was heading 048°pgc and 065°psc. The variation is 19°W. What is the deviation for that heading?
N a. 1°E Y b. 3°E N c. 1°W N d. 3°W 1493: On 11 July , your 0240 ZT position is LAT 14°52'N,
LONG 34°23'W. You observe Polaris bearing 359.8°pgc. At the time of the observation the helmsman noted that he was heading 279°pgc and 299°psc. The variation is 19°W.
What is the deviation for that heading?
Y a. 0° N b. 1°E N c. 1°W N d. 3°W 1762: What are the dimensions of the Old River Lock on the Lower Old River (mile 304 AHP)?
N a. 1175 x 75 feet Y b. 1190 x 75 feet N c. 1195 x 84 feet N d. 1202 x 84 feet 1964: The Platte River empties into which river?
N a. Mississippi Y b. Missouri N c. Ohio N d. Tennessee 1986: You are in charge of a vessel that damages an aid to navigation established and maintained by the United States. Which statement is TRUE?
N a. You must take the aid in tow and deliver it to the nearest Coast Guard, Marine Safety Office. N b. You must report the allision to the nearest Army Corps.. of
Engineers Office.N c. You may wait until you reach your destination before reporting the allision to the U.S. Coast Guard. Y d. You must report the accident to the nearest Officer in Charge, Marine Inspection. 2152: On 25 June , at 0612 zone time, morning stars were observed, and the vessel's position was determined to be LAT 28°13.0'S, LONG 49°34.0'E. Your vessel is steaming at 17.0 knots on a course of 066°T. A sextant observation of the Sun's lower limb is made at 1022 zone time. The chronometer reads 07h 19m 17s, and the sextant altitude is 35°26.3'. The index error is 1.5' on the arc, and the chronometer error is 02m 51s slow. Your height of eye on the bridge is 58.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
Y a. 021.5°T N b. 157.5°T N c. 201.5°T N d. 338.5°T 2654: You are steering 231°T, and a light is picked up dead ahead at a distance of 12.3 miles at 0338. You change course to pass the light 4 miles off abeam to starboard. If you are making 16.5 knots, what is your ETA at the position 4 miles off the light?
Y a. 0420 N b. 0423 N c. 0426 N d. 0429 2855: Your vessel is on a course of 107°T at 16 knots. At 0403 a light bears 129.5°T, and at 0426 the light bears 152°T. At what time and at what distance off will your vessel be when abeam of the light?
N a. 0434, 3.2 miles Y b. 0442, 4.3 miles N c. 0434, 4.3 miles N d. 0442, 3.4 miles 2884: Your vessel is steering 238°T at 11 knots. At 2304 a light bears 176°T, and at 2323 the same light bears 155°T. What will be your distance off abeam?
N a. 7.5 miles N b. 8.0 miles Y c. 8.5 miles N d. 9.0 miles 2889: While underway you sight a light 11° on your port bow at a distance of 12 miles. Assuming you make good your course, what will be your distance off the light when abeam?
Y a. 2.3 miles N b. 3.1 miles N c. 3.9 miles N d. 4.5 miles 3095: If the pitch of the propeller is 21.3 feet, and the revolutions per day are 126,214, calculate the day's run allowing 4% positive slip.
Y a. 424.5 miles N b. 442.1 miles N c. 459.9 miles N d. 477.3 miles 3453: You wish to make good a course of 350°T while turning for an engine speed of 10 knots. The set is 070°T, and the drift is 1.5 knots. What course should you steer?
N a. 332°T Y b. 341°T N c. 345°T N d. 359°T 3613: You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?
N a. 060°T Y b. 070°T N c. 080°T N d. 090°T 3643: While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a northerly wind produces 1° leeway?
N a. 084°T Y b. 086°T N c. 148°T N d. 085°T 3644: While enroute from Cape Town to Rio a vessel's course is 281°pgc. The variation for the locality is 24°W. The deviation is 4°E. The gyro error is 2°W. What is the true course made good?
Y a. 279°T N b. 261°T N c. 301°T N d. 283°T 11013: What will be the height of the tide at Horton Pt., New York, on 16 June 1983, at 1845 DST (ZD +4)?
N a. 0.2 foot Y b. 2.7 feet N c. 4.1 feet N d. 5.5 feet 11410: At 0647 a GPS fix places your vessel 1 mile due south of buoy "8C" (buoy position LAT 41°10.8'N, LONG 72°29.4'W). At 0753 another GPS fix places your vessel at LAT 41°08.6'N, LONG 72°41.6'W. What were your true course and speed made good?
N a. 088° at 9.6 knots N b. 192° at 8.8 knots Y c. 263° at 8.5 knots N d. 268° at 9.1 knots 11503: At 1016 your GPS position is LAT 41°07.6'N, LONG 71°37.9'W. At 1104 your position is LAT 41°00.2'N, LONG 71°29.4'W. What was the true course made good between the two positions?
N a. 134°T Y b. 139°T N c. 143°T N d. 145°T 13001: At 1222 your position is LAT 41°05.5'N, LONG 72°47.3'W. You are making turns for 14.5 knots. What is your ETA at Twenty-Eight Foot Shoal Lighted Buoy (LAT 41°09.3'N, LONG 72°30.5'W)?
N a. 1309 Y b. 1317 N c. 1321 N d. 1328 14102: Your vessel is awaiting lockage at Bonneville Locks when you notice that the lock is displaying an amber signal light. What type of vessel is allowed to enter the chamber under this signal?
N a. Vessels owned or operated by the United States N b. Passenger vessels Y c. Commercial freight and log-tow vessels N d. All vessels 15009: At 1930, your position is LAT 37°16.7'N, LONG 75°37.7'W. The depth of water is approximately __________.
N a. 30 feet ( 9.1 meters) N b. 40 feet (12.1 meters) Y c. 50 feet (15.1 meters) N d. 60 feet (18.1 meters) 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 15345: You are making good a course of 060°T at a speed of 13.5 knots. At 1855 Block Island North Light bears 086°T; at 1910 Block Island North Light bears 108°T; and at 1930 the same light bears 184°T. Which statement is TRUE about your 1930 running fix position?
Y a. You are on the edge of a cable area. N b. The bottom is mud, sand, and clay. N c. The wavy magenta lines to the north through east of your position are designated lobstering areas. N d. You are inside the 120 fathom curve 15464: What is the course per standard magnetic compass on the southern leg of York Spit Channel between buoys "15" and "23"?
N a. 319° N b. 322° Y c. 339° N d. 341° 15520: NOAA VHF-FM weather broadcasts from New London, CT are on __________.
N a. 162.25 MHz N b. 162.30 MHz N c. 162.40 MHz Y d. 162.55 MHz 15617: Your height of eye is 25 feet (7.6 meters). If the visibility is 5.5 nautical miles, what is the luminous range of Wolf Trap Light?
Y a. 7.5 miles N b. 12.0 miles N c. 16.0 miles N d. 17.0 miles 15712: At 0910, your DR position is LAT 41°11.9'N, LONG 72°47.8'
W. Your vessel is on course 097°T at 9.5 knots, and the weather is foggy. At 0915, Branford Reef Light is sighted through a break in the fog bearing 318°T. At 0945,
Falkner Island Light is sighted bearing 042°T. What is your 0945 running fix position?
N a. LAT 41°11.1'N, LONG 72°41.2'W N b. LAT 41°11.3'N, LONG 72°41.3'W N c. LAT 41°11.4'N, LONG 72°41.0'W Y d. LAT 41°11.5'N, LONG 72°40.7'W 15723: What daymark should you see as you approach Parker Landing Light (mile 924.6 AHP)?
N a. Green square N b. Green triangle N c. Red and green rectangle Y d. Green diamond 15728: What company does NOT have a marine facility along the river bank in Helena (mile 658 to 665 AHP)?
Y a. Helena Grain Co. N b. Helena Port Terminal, Inc. N c. Arkansas Power & Light Co. N d. Texas Eastern Pipeline Co. 15966: The yellow buoys on either side of your vessel that lead to Mobjack Bay mark __________.
N a. the limits of the dredged channel Y b. fish trap areas N c. underwater cable areas N d. ferry routes 16018: At 0550, engineering repairs are complete and speed is increased to 9.6 knots. At 0630, Falkner Island Light bears 023°pgc and Horton Point Light bears 097°pgc. From your 0630 fix you steer to make good a course of 086°T while turning for 9.6 knots. At 0700, Falkner Island Light bears 336.0°pgc and Horton Point Light bears 105.5°pgc. The radar range to the south tip of Falkner Island is 5.7 miles. Which statement is TRUE?
N a. Your course made good from 0630 to 0700 was 082°T. N b. The speed made good from 0630 to 0700 was 10.1 knots. N c. The current from 0630 to 0700 was 279°T at 0.6 knot. Y d. You are making good your intended speed. 16042: At 1022 when you complete the evacuation, you get underway on course 098°T and order turns for 14.5 knots. You take the following round of bearings at that time:
Stratford Point Light - 260° per gyrocompass
New Haven Light - 326° per gyrocompass
SW Ledge Light - 358° per gyrocompass
Determine your ETA and distance off when abeam of Falkner Island Light, if there are no set and drift?
N a. 1102, 3.0 miles Y b. 1108, 3.3 miles N c. 1114, 3.1 miles N d. 1118, 3.3 miles 16062: At 1930, your vessel is between York River Entrance Channel Lighted Buoys "1YR" and "2". From this position, you change course to 142°pgc at an engine speed of 8.0 knots. At 2000, you take the following bearings: Chesapeake Channel Tunnel North Light - 131°pgc Thimble Shoal Light - 247°pgc
What were the set and drift between 1930 and 2000?
N a. 140°T at 0.2 knot Y b. 140°T at 0.4 knot N c. 320°T at 0.2 knot N d. 320°T at 0.4 knot 16266: The abandoned lighthouse at Cape Henry is a(n) __________.
N a. octagonal, black and white tower N b. radio beacon station N c. emergency back up to Cape Henry Light Y d. gray, pyramidal tower 16268: As you pass between trestle "B" and trestle "C" of the Chesapeake Bay Bridge - Tunnel, you sight along the trestle "C" when it is in line. The gyro bearing is 048°. What is the gyro error by observation?
N a. 4°E Y b. 1°E N c. 0° N d. 2°W 16710: In clear weather, how far away will you sight Point Judith Light? (use charted range of 20 miles as nominal range)
N a. 9.2 nm N b. 10.6 nm N c. 12.3 nm Y d. 14.0 nm