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.
76: What daymark should you see as you approach Parker Landing Light (mile 924.6 AHP)?
N a. Green square Y b. Green diamond N c. Red and green rectangle N d. Green triangle 190: On 2 January you observe the lower limb of the Sun at a sextant altitude (hs) of 35°50.4'. The index error is 0.8' on the arc. The height of eye is 24 feet (7.3 meters). What is the observed altitude (Ho)?
N a. 35°50.3' N b. 35°54.7' Y c. 35°59.7' N d. 36°05.6' 309: A vessel at LAT 14°10'N, LONG 61°00'W is to proceed to LAT 10°00'N, LONG 53°23'W. What is the course and distance by mid-latitude sailing?
N a. 117.3°T, 503.0 miles N b. 117.9°T, 504.0 miles N c. 118.6°T, 508.0 miles Y d. 119.2°T, 512.0 miles 368: You will enter waters governed by the International Rules when __________.
N a. you cross the territorial sea boundary line N b. abeam of buoy "CBJ" Y c. Cape Charles Light bears 022°T N d. you cross the boundary of the contiguous zone 409: A vessel steams 1082 miles on course 047°T from LAT 37°18.0'N, LONG 24°40.0'W. What is the latitude and longitude of the point of arrival by Mercator sailing?
N a. LAT 49°30.0'N, LONG 06°22.0'W N b. LAT 49°33.0'N, LONG 06°25.0'W Y c. LAT 49°36.0'N, LONG 06°28.0'W N d. LAT 49°39.0'N, LONG 06°31.0'W 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 451: Determine the great circle distance and initial course from LAT 27°51.0'N, LONG 71°41.0'W to LAT 49°45.0'N, LONG 06°14.0'W.
N a. 3196 miles, 313.1°T Y b. 3214 miles, 046.9°T N c. 3219 miles, 042.5°T N d. 3231 miles, 041.4°T 622: You are on a voyage from Limoy, Costa Rica, to Los Angeles, CA. The distance from departure to arrival is 3150 miles. The speed of advance is 14.0 knots. You estimate 24.0 hours for bunkering at Colon, and 12.0 hours for the Panama Canal transit. If you take departure at 1836 hours (ZD +6), 28 January, what is your ETA (ZD +8) at Los Angeles?
N a. 1736, 9 February N b. 1736, 8 February Y c. 1336, 8 February N d. 0536, 8 February 988: On 29 June , your 0800 zone time fix gives you a position of LAT 26°16.0'S, LONG 61°04.0'E. Your vessel is steaming a course of 079°T at a speed of 15.5 knots. An observation of the Sun's upper limb is made at 0905 zone time, and the observed altitude (Ho) is 25°20.1. The chronometer reads 05h 08m 12s, and the chronometer error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and a meridian altitude of the Sun's lower limb is made. The observed altitude (Ho) for this sight is 40°44.2'. Determine the vessel's 1200 zone time position.
Y a. LAT 26°02.0'S, LONG 62°05.0'E N b. LAT 26°02.0'S, LONG 62°23.2'E N c. LAT 26°05.1'S, LONG 62°06.3'E N d. LAT 25°56.0'S, LONG 62°03.0'E 1138: After you get underway, what is the first river gage you will pass?
Y a. Donaldsonville N b. Head of Passes N c. Baton Rouge N d. Red River Landing 1150: 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?
Y a. 53.2 feet N b. 58.1 feet N c. 68.2 feet N d. 96.3 feet 1216: It is 8 March and you are keeping zone time -3. You are on course 104°T, speed 21 knots. Your 0830 DR position is LAT 25°35.0'S, LONG 66°34.0'E. What is the time of the second estimate of LAN by ship's clocks?
Y a. 10h 41m 26s N b. 11h 15m 34s N c. 11h 17m 32s N d. 11h 36m 54s 1250: What facility is not found near La Grange Towhead Light (538.2 AHP) on Greenville Harbour?
N a. Mississippi Limestone N b. Ergon, Inc. N c. American Commercial Barge Lines Y d. Greenville Casino Wharf 1497: On 19 November , your 0146 ZT position is LAT 33°48'N, LONG 25°22'E. You observe Polaris bearing 359.8°pgc. At the time of the observation the helmsman noted that he was heading 224°pgc and 222.5°psc. The variation is 2°E. What is the deviation for that heading?
N a. 2.0°E N b. 0.5°E Y c. 1.0°W N d. 1.5°W 1500: On September 9 , your 2130 zone time (ZD +5) DR position is LAT 45°08'N, LONG 82°38'W. At that time, you observe Polaris bearing 000.5°pgc. The chronometer time of the observation is 02h 26m 09s, and the chronometer is 1m 43s slow. The variation is 8.7°W. What is the gyro error?
Y a. 0.7°E N b. 1.2°E N c. 0.8°W N d. 9.4°W 1679: On 13 October , your vessel's 1722 zone time DR position is LAT 27°36'S, LONG 136°16'E, when an amplitude of the Sun is observed. The Sun's center is on the celestial horizon and bears 266° per standard magnetic compass. Variation in the area is 2°W. The chronometer reads 08h 24m 19s and is 01m 43s fast. What is the deviation of the standard magnetic compass?
N a. 2.3°E Y b. 2.8°W N c. 4.8°E N d. 6.8°W 1684: You are passing Putney Lt. (mile 943.6 AHP). The gray shaded areas alongside the river represent __________.
N a. levees N b. weirs N c. dikes Y d. revetments 1772: What is your ETA at the Fulton Gage?
N a. 1405, 12 Sept N b. 1052, 12 Sept N c. 0828, 12 Sept Y d. 0204, 12 Sept 2020: On 23 July , your 1700 zone time DR position is LAT 27°29'N, LONG 129°26'W. You are on course 079°T at a speed of 20 knots. Considering their magnitude, azimuth, and altitude, which group includes the three bodies best suited for a fix at star time?
N a. Arcturus, Jupiter, Denebola Y b. Spica, Sabik, Vega N c. Antares, Polaris, Altair N d. Jupiter, Saturn, Polaris 2157: On 25 May , your vessel's 1917 zone time position is LAT 24°16.0'N, LONG 017°26.0'W. At that time a sextant observation of the planet Saturn was made. The sextant altitude is 63°05.1', and the chronometer reads 08h 18m 24s. The index error is 4.5' off the arc, and the chronometer error is 01m 05s fast. Your height of eye is determined to be 62.0 feet. What is the azimuth (Zn) of this sight using the assumed position?
N a. 143.8° Y b. 147.3° N c. 148.7° N d. 149.9° 2582: From your 1750 GPS position at LAT 41°15.6'N, LONG 072°11.5'W, you plot a course of 255°T at 8.5 kts. At what time would you see Falkner Island Light, if visibility is 10 miles?
N a. 1819 Y b. 1850 N c. 1910 N d. 1917 2657: You are steering 349°T, and a light is picked up dead ahead at a distance of 17.2 miles at 2122. You change course to pass the light 4.5 miles off abeam to port. If you are making 19.5 knots, what is your ETA at the position 4.5 miles off the light?
N a. 2207 N b. 2210 Y c. 2213 N d. 2216 2683: You are underway on a course of 135°pgc at 15 knots, and you sight a lighthouse dead ahead at a range of 12.5 miles at 1145. What course would you steer to leave the lighthouse 3.0 miles off your port beam?
N a. 117°pgc N b. 121°pgc Y c. 149°pgc N d. 154°pgc 2777: The Helena Gage reads 2.3 feet. The high point on your towboat is 26 feet above water. What is the vertical clearance when you pass under the Helena Highway Bridge?
N a. 76.0 feet N b. 84.2 feet N c. 89.5 feet Y d. 90.7 feet 3061: The propeller on a vessel has a diameter of 20.2 feet and a pitch of 19.0 feet. What would be the apparent slip if the vessel cruised 367 miles in a 24 hour day (observed distance) at an average RPM of 84?
Y a. +2.9% N b. -2.9% N c. +5.2% N d. -5.2% 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 3102: You are turning 88 RPM, with a propeller pitch of 19 feet, and an estimated slip of 0%. What is the speed of advance?
Y a. 16.5 knots N b. 16.9 knots N c. 17.3 knots N d. 18.1 knots 3253: You have steamed 925 miles at 13.5 knots, and consumed 181 tons of fuel. If you have 259 tons of usable fuel remaining, how far can you steam at 16 knots?
N a. 795 miles Y b. 942 miles N c. 1117 miles N d. 1409 miles 3256: You have steamed 918 miles at 15.0 knots, and consumed 183 tons of fuel. If you have 200 tons of usable fuel remaining, how far can you steam at 12 knots?
N a. 1021 miles N b. 1261 miles Y c. 1568 miles N d. 1960 miles 3765: Your vessel is proceeding up a channel steering on a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 249°T, and the variation is 14°E. If the heading of your vessel at the time of the sighting is 226° per standard magnetic compass, what is the correct deviation?
N a. 5°E N b. 5°W Y c. 9°E N d. 9°W 10204: Your present position is LAT 41°05.5'N, LONG 72°38.0'W. Assuming that there is no set and drift, what course must you steer per standard magnetic compass (psc) to arrive at a position 5 miles due south of Saybrook Breakwater Light?
N a. 089°psc Y b. 080°psc N c. 077°psc N d. 066°psc 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. 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 12107: You sight Tue Marshes Light (LAT 37°14.1'N, LONG 76°23.2'W) in line with Goodwin Thorofare Light "16" (LAT 37°13.7'N, LONG 76°25.0'W) bearing 267° per standard magnetic compass. What is TRUE if your vessel's heading is 056°psc?
N a. The compass error is 13°E. Y b. The deviation table is in error and should be corrected. N c. The deviation is 4°E. N d. The deviation table is correct for a heading of 056°psc. 12200: You are on course 119°psc. You sight New Haven Outer Channel Range Rear Light in line with the Outer Channel Range Front Light bearing 346° per standard magnetic compass. This indicates that __________.
N a. you should swing the vessel to determine the deviation Y b. the existing deviation table is correct for that heading N c. your compass is affected by a local magnetic disturbance N d. the compass error is 16°W 12305: You sight North Dumpling Island Light in line with Latimer Reef Light (LAT 41°18.2'N, LONG 71°56.0'W) bearing 095° per standard magnetic compass. If your vessel was heading 056° per standard magnetic compass at the time, which of the following is TRUE?
N a. You should subtract 15°Compass error for bearings of 095°. N b. The deviation table is correct for all bearings of 095°. Y c. The vessel should be swung, and the deviation table checked. N d. The compass error is 19°W for all headings. 12701: You are on course 298° per standard magnetic compass when you take the following bearings: Block Island Southeast Point Light - 058°psc Block Island Aero Beacon - 005°psc Montauk Point Light - 268°psc What is your position?
N a. LAT 41°08.3'N, LONG 71°35.0'W Y b. LAT 41°08.2'N, LONG 71°34.4'W N c. LAT 41°08.1'N, LONG 71°33.8'W N d. LAT 41°08.0'N, LONG 71°34.1'W 13004: At 1815 your position is LAT 41°05.5'N, LONG 72°47.3'W. You are making turns for 12.6 knots. What is your ETA at Plum Island Mid Channel Buoy PI (LAT 41°13.3'N, LONG 72°10.8'W)?
N a. 2019 N b. 2028 Y c. 2032 N d. 2038 13303: You are considering anchoring approximately three miles northeast of Chesapeake Light. After examining the chart you decide not to because of the __________.
N a. large number of wrecks N b. coral being designated as a special protected area Y c. danger of unexploded mines N d. area being designated as a National Marine Sanctuary 13900: The trapezoidal shaped areas enclosed by a thin broken magenta line and located along the south coast of Long Island are __________.
N a. designated training areas for Navy amphibious craft N b. disposal areas for unexploded munitions Y c. fish trap areas N d. anchorage areas for small craft 15343: At 1844 Watch Hill Point bears 323° true and Block Island North Light bears 084° true
Which statement is TRUE?
N a. Your fathometer reads 97 feet N b. You are governed by the Inland Rules of the Road. N c. You are to the left (north) of your desired course line. Y d. Your vessel is approximately 8.7 miles off Sandy Point. 15518: From your 1930 position, you plot a course to pass 0.5 mile due south of Race Rock Light. If your vessel's speed is 10.0 knots, the current's set and drift are 040°T at 1.8 knots, and a north wind produces a 3° leeway, what true course should you steer to make good your desired course?
N a. 275°T Y b. 280°T N c. 290°T N d. 294°T 15725: At 1723 you increase speed to make good 9.2 mph. At 1937 you have a daymark on your port beam. What daymark is this?
N a. Tiptonville Ferry Landing Daymark N b. Tiptonville Light Y c. Merriwether Bend Light and Daymark N d. Alaska Light and Daymark 15770: At 0930, your position is LAT 41°16.5'N, LONG 71°41.4'W, and you are turning for 7 knots. Allowing 3° leeway for northerly winds and estimating the current as 035° at 0.3 knot, what is the course to steer (pgc) to point "B"?
N a. 084°pgc Y b. 086°pgc N c. 091°pgc N d. 094°pgc 15808: At 0005, on 26 January, your position is LAT 41°11.8'N,
LONG 72°20.5'W. From this position, you plot a course to steer to a point one half mile north of Mattituck Breakwater Light "MI" with an engine speed of 9.0 knots. If there are no set and drift, what course should you steer?
N a. 207°psc N b. 213°psc N c. 220°psc Y d. 235°psc 16110: If you are making 8.3 knots over the ground, what is your ETA at the first turning point in York Spit Channel between buoys "29" and "30"?
N a. 0444 N b. 0456 N c. 0508 Y d. 0522 16215: The wind is southerly, and you estimate 3° leeway. Allowing for leeway, what is the course to steer from your 0745 position to pass 1 mile south of Watch Hill Buoy "WH"?
N a. 079°pgc N b. 081°pgc N c. 085°pgc Y d. 087°pgc 16219: At 0900, you take the following radar ranges:
Watch Hill Point 5.4 miles
Block Island Grace Point 8.3 miles
Which statement is TRUE?
N a. You are within 3 nautical miles of the coast. N b. The bottom in the area is sand and gravel. Y c. The fix is indeterminate. N d. You are governed by the Inland Rules. 16258: What is the course to steer per standard magnetic compass from the anchorage to point A, if easterly winds are causing 3° of leeway?
N a. 187° Y b. 191° N c. 194° N d. 197° 16468: When Cape Henry Light is abeam, what is the approximate distance to Yorktown?
N a. 58 miles N b. 55 miles N c. 42 miles Y d. 34 miles 16557: Which course would you steer by your standard magnetic compass to make good a course of 275°T?
N a. 266°psc N b. 272°psc Y c. 289°psc N d. 294°psc 16561: From your 1830 fix, you come left to a course of 290°T.
Which statement concerning Watch Hill Light is TRUE?
N a. The nominal range of its white light is 16 miles. Y b. It displays both red and white lights. N c. Its horn blasts every 15 seconds in fog. N d. Its geographic range is 18.5 miles at a 35-foot (10.7 meters) height of eye. 16640: At 0445 you take the following lines of position:
Montauk Point Light 292°pgc
Block Island Southeast Point Light 024°pgc
What was the current encountered since your 0400 fix?
N a. 004°, 0.7 knot Y b. 004°, 0.9 knot N c. 184°, 0.7 knot N d. 184°, 0.9 knot :
N a. N b. N c. N d.