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.
83: Which light characteristics does Catfish Point Lower Light (mile 572.2 AHP) have?
Y a. 2 red flashes every 5 seconds N b. 5 red flashes every 2 seconds N c. 2 white flashes every 5 seconds N d. 3 red flashes every 5 seconds 84: What is the distance from the Amoco Docks at Baton Rouge, LA, to the mouth of the Ohio River?
N a. 981.5 miles N b. 953.5 miles N c. 727.9 miles Y d. 700.2 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 252: At 0100, you obtain the following radar ranges:
Inlet Point - 2.7 miles,
Rocky Point - 4.5 miles,
Horton Point - 1.0 mile.
What was the speed made good between 0045 and 0100?
N a. 6.7 knots Y b. 7.2 knots N c. 8.0 knots N d. 8.7 knots 326: Your 0200 position is LAT 37°23.5'N, LONG 76°09.2'W. Your speed is 8 knots, and your course is 095°T. Which statement is TRUE?
N a. The depth of the water in your vicinity is about 38 to 40 fathoms (69.1 meters to 72.7 meters). N b. The closest major aid to navigation is New Point Comfort. Y c. You are less than a mile from a sunken wreck which could interfere with your tow. N d. You will pass through a disposal area on your present course. 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 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 569: At 0823, Old Point Comfort Light bears 000°T at 0.6 mile. What is your 0823 position?
N a. LAT 36°59.8'N, LONG 76°18.0'W Y b. LAT 36°59.5'N, LONG 76°18.4'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 659: You are planning a voyage from LAT 48°30'N, LONG 125°00'W to Korea via LAT 48°30'N, LONG 153°00'E. Which of the following track lines would you select for the safest and most direct route? (Use gnomonic tracking chart WOXZC 5270)
N a. Parallel sailing along 48°30'N N b. Great circle track line between the two points Y c. Great circle to LAT 51°00'N, LONG 178°00'W, parallel sailing for 80 miles, then great circle to the via point N d. Rhumb line track between the two points 1004: On 15 November , your 1030 ZT DR position is LAT 19°41'S, LONG 41°37'W. You are on course 239°T, speed 22 knots. Determine your 1200 position using the following observations of the Sun.
ZONE TIME GHA DECLINATION Ho
1128 40°50.4' S 18°33.6' 88°18.4'
1133 42°05.4' S 18°33.6' 88°37.7'
Y a. LAT 20°01.0'S, LONG 42°05.9'W N b. LAT 20°04.3'S, LONG 42°09.8'W N c. LAT 20°06.7'S, LONG 42°06.1'W N d. LAT 20°08.1'S, LONG 42°00.7'W 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 1285: On 28 June , your 1820 ZT DR position is LAT 16°00.0'N,
LONG 31°00.0'W. You are on course 310°T at a speed of 18 knots. What will be the zone time of sunset at your vessel?
N a. 1828 N b. 1832 N c. 1836 Y d. 1840 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 1412: At Filter Point Light (mile 475 AHP) there are 3 close straight dashed lines on the map passing through the black dot below the number 475. What do these lines represent?
N a. Oil pipelines N b. Submerged gas pipelines Y c. Power Cables N d. Submerged fiber optic cable 1723: You will pass the first gage at __________.
N a. Profit Island N b. Bayou Sara N c. Baton Rouge Y d. Red River Landing 1912: On 22 February , your 1857 DR position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer reads 01h 00m 35s, and is 03m 25s fast. What star did you observe?
Y a. Adhara N b. Miaplacidus N c. Avior N d. Suhail 2103: On 24 August , in DR position LAT 26°49.4'N, LONG 146°19.4'E, you observe an amplitude of the Sun. The Sun's center is on the celestial horizon and bears 084°psc. The chronometer reads 07h 55m 06s and is 01m 11s fast. Variation in the area is 15°W. What is the deviation of the magnetic compass?
N a. 8.0°E Y b. 8.3°E N c. 8.5°E N d. 8.7°E 2117: You must arrive at your final destination by 0800. The distance from your 0300 position to the final destination is 40.5 miles. What minimum speed must be made good to arrive on time?
Y a. 8.1 knots N b. 8.5 knots N c. 9.3 knots N d. 9.6 knots 2166: On 10 January , at 0550 ZT, morning stars were observed, and the vessel's position was determined to be LAT 25°16.0'N, LONG 123°18.0'W. Your vessel is steaming at 22.0 knots on a course of 295°T. A sextant observation of the Sun's lower limb is made at 0915 ZT. The chronometer reads 05h 14m 02s, and the sextant altitude is 24°00.7'. The index error is 2.6' off the arc, and the chronometer error is 01m 34s slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 127.8°T N b. 129.8°T Y c. 131.9°T N d. 133.6°T 2706: While on a course of 216°pgc, a light bears 12° on the port bow at a distance of 11.2 miles. Which course should you steer to pass 2 miles abeam of the light leaving it to port?
N a. 208°pgc N b. 210°pgc N c. 212°pgc Y d. 214°pgc 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 2911: What is indicated by the two light gray shaded areas that cross the river above False River Lt. (mile 251.0 AHP)?
N a. Ferry crossings Y b. Utility crossings N c. Aerial cable crossings N d. Bridge construction 3063: The observed distance for a day's run was 302.7 miles. The propeller had a pitch of 20'06", and the average RPM was 67. What was the slip?
N a. +0.7% N b. -0.7% Y c. +7.0% N d. -7.0% 3097: If the pitch of the propeller is 19.4 feet, and the revolutions per day are 96,713, calculate the day's run allowing 6% positive slip.
N a. 266.4 miles Y b. 290.1 miles N c. 308.6 miles N d. 327.1 miles 3269: Your vessel arrives in port with sufficient fuel to steam 812 miles at 15 knots. If you are unable to take on bunkers, at what speed must you proceed to reach your next port, 928 miles distant?
N a. 13.6 knots Y b. 14.0 knots N c. 15.3 knots N d. 15.7 knots 3299: You have steamed 174 miles and consumed 18 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 416 miles?
N a. 34.9 tons N b. 38.4 tons Y c. 43.0 tons N d. 46.2 tons 3305: You have steamed 201 miles and consumed 18.0 tons of fuel. If you maintain the same speed, how many tons of fuel will you consume while steaming 482 miles?
N a. 25.2 tons Y b. 43.2 tons N c. 52.6 tons N d. 103.5 tons 3626: Your vessel is steering course 284°psc, variation for the area is 6°W, and deviation is 3°E. The wind is from the north-northeast, producing a 3° leeway. What true course are you making good?
N a. 275°T Y b. 278°T N c. 284°T N d. 290°T 3639: You desire to make good a true course of 132°. The variation is 10°W, magnetic compass deviation is 5°E, and gyrocompass error is 5°W. A northeast by east wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make the true course good?
Y a. 132°psc N b. 135°psc N c. 137°psc N d. 142°psc 11007: What will be the height of the high water at Mount Sinai Harbor on the morning of 26 August 1983?
N a. 4.1 feet Y b. 6.3 feet N c. 7.2 feet N d. 8.4 feet 11101: Great Salt Pond on Block Island is __________.
Y a. entered through a dredged cut N b. not accessible in easterly gales N c. available for vessels up to a maximum draft of 8 feet (2.4m) N d. not affected by the tide 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 11308: At 1919 your position is LAT 37°00.0'N, LONG 75°30.0'W. At 2011 your position is LAT 36°59.5'N, LONG 75°44.9'W. What was the speed made good?
Y a. 13.7 knots N b. 12.0 knots N c. 11.6 knots N d. 10.9 knots 12302: You are on course 203° per standard magnetic compass when you sight Block Island North Light in line with the Block Island Aero Beacon bearing 194° per standard magnetic compass. Based on this you __________.
N a. know the correct deviation is 3°W Y b. should swing your vessel to check the deviation table N c. should apply 15°W compass error to all compass readings N d. know you are steering a true course of 185° 12601: You are on course 062° per standard magnetic compass when you take the following bearings: Branford Reef Light 060°psc Stratford Point Light 272°psc New Haven Light 324°psc What is your position?
N a. LAT 41°07.1'N, LONG 72°53.4'W Y b. LAT 41°10.5'N, LONG 72°52.8'W N c. LAT 41°11.6'N, LONG 72°50.0'W N d. LAT 41°13.3'N, LONG 72°48.7'W 13007: Your 1600 position is LAT 41°08.0'N, LONG 72°44.8'W. You are making turns for 10 knots. What is your ETA at Twenty-Eight Foot Shoal Lighted Buoy "TE" (LAT 41°09.3'N LONG 72°30.5'W)?
N a. 1647 N b. 1651 N c. 1702 Y d. 1706 13401: You are planning to anchor in Orient Harbor at LAT 41°07.9'N, LONG 72°18.5'W. Assuming that normal conditions exist, how much anchor cable should you put out?
N a. 16 to 18 feet N b. 40 to 60 feet Y c. 80 to 112 feet N d. 120 to 140 feet 13810: Which chart would you use if you planned to continue westward beyond the coverage of this chart?
Y a. 12363 N b. 12373 N c. 13205 N d. 13218 14703: At 0800 your vessel is at mile 110 proceeding in an easterly direction on the Columbia River. At 1030 Reed Island is abeam to port as you pass the 125 mile mark. What has been your average speed in knots?
N a. 4.3 knots Y b. 5.2 knots N c. 8.7 knots N d. 10.0 knots 14703: At 0800 your vessel is at mile 110 proceeding in an easterly direction on the Columbia River. At 1030 Reed Island is abeam to port as you pass the 125 mile mark. What has been your average speed in knots?
N a. 4.3 knots Y b. 5.2 knots N c. 8.7 knots N d. 10.0 knots 15044: At 0841 Chesapeake Light bears 164° true, Cape Charles Light bears 312° true, and Cape Henry Light bears 247°
true. What was your course made good since 0811?
Y a. 226°true N b. 230°true N c. 233° true N d. 237°true 15046: As you pass through the Chesapeake Bay Bridge and Tunnel,
you take a bearing of 047°pgc along trestle C when it is in line. The helmsman reports the vessel's heading as 316°
pgc and 329°psc. What is the deviation on that heading?
N a. 3°E N b. 1°E Y c. 1°W N d. 9°W 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 15111: At 1810, you sight a buoy on your starboard side labeled "19".
This buoy marks __________.
N a. a submerged obstruction in York Spit Channel N b. the visibility limit of the red sector of Cape Henry Light Y c. the side of York Spit Channel N d. the junction of the York Spit and York River Entrance Channels 15145: At 2357 your position is 41°09.0'N, 71°47.0'W and Montauk Point Light bears 216° true. You change to a course of 293° true and your speed is 14.5 knots. At 0012 Montauk Point Light bears 177° true. Which statement about your 0012 running fix is TRUE?
N a. You are being set to the north. Y b. The fathometer reading is about 14 fathoms. N c. You are governed by the Inland Rules of the Road. N d. The fathometer trace shows you passed over the 89 foot sounding. 15169: At 2123, your position is LAT 37°20.0'N, LONG 76°03.0'W. What is your distance offshore of Savage Neck?
Y a. 1.7 miles N b. 2.5 miles N c. 3.6 miles N d. 10.9 miles 15412: Determine your 1915 position using the following information obtained at 1915.
Visual bearings
Cape Charles Light 107°pgc
Cape Henry Light 172°pgc
Radar Bearing and Range
Chesapeake Channel Tunnel South Light 189°pgc at 7.2 miles
N a. LAT 37°03.5'N, LONG 76°05.9'W N b. LAT 37°03.5'N, LONG 76°09.3'W N c. LAT 37°05.9'N, LONG 76°03.5'W Y d. LAT 37°09.3'N, LONG 76°03.1'W 15567: Point Judith Harbor of Refuge __________.
N a. is used mostly by towing vessels N b. has a maximum depth of 14 feet (4.3 meters) at MHW N c. West Gap has a controlling depth of 24 feet Y d. is entered through the East Gap or the West Gap 15660: At 0728, Race Rock Light is bearing 282°T at 3.8 miles,
and the closest point on Fishers Island has a radar range of 2.1 miles. What speed have you been making since you changed course at 0705?
N a. 11.2 knots N b. 10.8 knots Y c. 9.6 knots N d. 9.1 knots 15715: Little Gull Island Light is __________.
N a. lighted only during daytime when the sound signal is in operation N b. maintained only from May 1 to Oct 1 Y c. lighted throughout 24 hours N d. obscured by trees from 253° to 352° 16465: At 0600, you are entering the inbound leg of the traffic separation scheme at position LAT 36°59.2'N, LONG 75°47.6'
W. Course is 250°T. At 0605, Cape Henry Light bears 249°
T. At 0610, it bears 248°T. At 0625, it bears 247°T. Based on this, you know you are __________.
N a. meeting a current from dead ahead N b. running with a current from dead ahead Y c. being set to the north N d. being set to the south 16566: If you were to head into New London Harbor, which chart should you switch to for the best detail?
N a. 13209 N b. 13212 Y c. 13213 N d. 13214