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.
21: Which buoy is NOT numbered?
N a. Green can buoy Y b. Preferred-channel buoy N c. Red lighted buoy N d. Green gong buoy 26: Wind direction may be determined by observing all of the following EXCEPT __________.
N a. low clouds N b. waves N c. whitecaps Y d. swells 27: Spring tides are tides that __________.
Y a. have lows lower than normal and highs higher than normal N b. have lows higher than normal and highs lower than normal N c. are unpredictable N d. occur in the spring of the year 34: The Local Notice to Mariners is usually published __________.
N a. daily Y b. weekly N c. monthly N d. semiannually 81: A buoy with a composite group-flashing light indicates a(n) __________.
Y a. bifurcation N b. fish net area N c. anchorage area N d. dredging area 107: The average height of the surface of the sea for all stages of the tide over a 19 year period is called __________.
N a. mean high water N b. mean low water N c. half-tide level Y d. mean sea level 181: Which navigational mark may only be lettered?
N a. An unlighted, green, can buoy Y b. A spherical buoy N c. A red buoy N d. A port side day-shape 208: The moon is full and at perigee on 20 January 1983. What is the maximum current you could expect at 2350 (ZD +5) at Nantucket Shoals?
N a. 0.5 knot N b. 0.7 knot N c. 0.8 knot Y d. 1.0 knot 408: A buoy bears 176°T at 3000 yards. What is the course to make good to leave the buoy 100 yards to port?
N a. 174°T N b. 176°T Y c. 178°T N d. 180°T 487: What will be the time after 0600 (ZD +3), on 6 March 1983, that the height of the tide at Puerto Rosales, Argentina, will be 9.0 feet (2.7 meters)?
N a. 0740 N b. 0754 N c. 0840 Y d. 0922 505: The error in the measurement of the altitude of a celestial body, caused by refraction, increases as the __________.
N a. horizontal parallax decreases N b. observer's height above sea level increases N c. humidity of the atmosphere decreases Y d. altitude of the body decreases 516: A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.
N a. higher than normal swells N b. high winds N c. winds veering from south, through west, to northwest Y d. gradual pressure gradient 596: Which condition would NOT indicate the approach of a tropical storm?
N a. Long, high swells N b. Cirrus clouds N c. Halos about the Sun or Moon Y d. Decrease in wind velocity 605: Which is NOT a side of the celestial navigational triangle?
N a. Co-latitude N b. Zenith distance Y c. Altitude N d. Co-declination 670: A NAVAREA warning carries the following number; 1986/87 (11). Which statement is TRUE?
N a. The warning was issued in 1986, the 87th sequentially numbered warning and broadcast 11 times. Y b. This is warning number 1986 issued in 1987, and it affects sub-region 11. N c. This warning is valid in 1986 and 1987 and is the eleventh two-year warning. N d. The subject of this warning first appeared in 1986; this warning is in 1987 and is the eleventh on this topic. 765: Diurnal aberration is due to __________.
N a. motion of the Earth in its orbit Y b. rotation of the Earth on its axis N c. the body's orbital motion during the time required for its light to reach the Earth N d. a false horizon 805: If the right ascension of a body is 9 hours, it also __________.
Y a. is 135° N b. corresponds to an SHA for the body of 45° N c. means that the GP of the body is in the western hemisphere N d. All of the above 852: What is published by the U.S. Coast Guard?
Y a. Light List N b. Nautical Charts N c. Tide Tables N d. U.S. Coast Pilot 906: In the Northern Hemisphere, an area of counterclockwise wind circulation surrounded by higher pressure is a __________.
Y a. low N b. high N c. warm front N d. cold front 941: While preparing to enter a Brazilian port, you see ahead a red and green horizontally-striped buoy. The upper band is red. What action should you take?
N a. Alter course to leave the buoy to port. Y b. Alter course to leave the buoy to starboard. N c. Pass the buoy close aboard on either side. N d. Pass the buoy well clear on either side. 960: The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 29 feet (8.8 meters). Your height of eye is 52 feet (15.8 meters) and visibility is 6.0 miles. At which approximate range will you first sight the light?
N a. 8.0 miles Y b. 11.0 miles N c. 14.5 miles N d. 16.0 miles 1089: You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the course to steer at 13 knots to intercept vessel A?
Y a. 262° N b. 269° N c. 276° N d. 281° 1102: What is the approximate geographic range of Race Rock Light, NY, if your height of eye is 27 feet (8.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 9.9 nm N b. 14.3 nm Y c. 15.7 nm N d. 17.4 nm 1145: The GHA of a star __________.
Y a. increases at a rate of approximately 15° per hour N b. increases at a rate of approximately 4° per hour N c. decreases at a rate of approximately 15° per hour N d. decreases at a rate of approximately 4° per hour 1177: The magnitude of three stars is indicated. Which star is the brightest?
Y a. Canopus - 0.9 N b. Vega + 0.1 N c. Antares + 1.2 N d. Cannot be determined; magnitude indicates size not brightness 1301: The four standard light colors used for lighted aids to navigation are red, green, white, and __________.
N a. purple N b. orange N c. blue Y d. yellow 1397: What will be the velocity of the tidal current at Port Jefferson Harbor Entrance, NY, at 1600 EST (ZD +5) on 23 December 1983?
N a. 0.9 knot Y b. 1.1 knots N c. 1.6 knots N d. 2.0 knots 1447: What will be the velocity of the tidal current 6 miles south of Shoal Point, NY, at 1850 DST (ZD +4) on 9 July 1983?
N a. 0.2 knot ebb Y b. 0.2 knot flood N c. 1.2 knot ebb N d. 1.4 knot flood 1568: You are approaching a vertical lift bridge. You know the span is fully open when __________.
N a. three white lights in a vertical line are lit N b. a red light starts to flash at about 60 times a minute N c. a yellow light is illuminated on the bridge pier Y d. there is a range of green lights under the lift span 1614: Hot air can hold __________.
N a. less moisture than cold air Y b. more moisture than cold air N c. the same amount of moisture as cold air N d. moisture independent of air temperature 1674: The letter D in illustration D006NG represents the __________.
N a. visible horizon Y b. geometrical horizon N c. celestial horizon N d. geoidal horizon 1680: A weather front exists when __________.
N a. air masses of the same temperature meet Y b. air masses of different temperatures meet N c. many clouds create a differential in air density N d. two lows are separated by a ridge of higher pressure 1682: Which of the listed properties does warm air possess?
N a. It rises above cooler air and cools as it rises. N b. Atmospheric pressure drops as warm air rises. N c. Moisture in warm air condenses as the air is cooled. Y d. All of the above 1781: While in port, you can follow the approach of a dangerous cyclonic storm by inspecting __________.
N a. the sky overhead N b. the National Weather Service Observing Handbook No.1, Marine Surface Observations N c. the Coast Pilot or Sailing Directions Y d. a weather map 1789: The Illustration represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter F in the illustration? (D036NG )
Y a. One red light N b. Two green lights N c. Three green lights N d. No light(s) 1828: When entering from seaward, a buoy displaying a single-flashing red light indicates __________.
N a. a junction with the preferred channel to the left N b. a wreck to be left on the vessel's port side N c. a sharp turn in the channel to the right Y d. the starboard side of the channel 1829: The illustration represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter E in the illustration? (D036NG )
N a. One red light N b. Two green lights N c. Three green lights Y d. No light 1850: A vessel heading WNW is on a course of __________.
N a. 270.0° Y b. 292.5° N c. 315.0° N d. 337.5° 1872: To find a magnetic compass course from a true course you must apply __________.
N a. deviation N b. variation Y c. deviation and variation N d. magnetic anomalies (local disturbances) 1979: The principal vertical circle is that great circle on the celestial sphere that passes through the __________.
N a. zenith and the celestial body Y b. zenith and the north and south poles N c. poles and Greenwich N d. zenith and is parallel to the horizon 2056: This illustration represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter C? (D038NG )
N a. One red light Y b. Two green lights N c. Three green lights N d. No lights 2150: On a Mercator chart, 1 nautical mile is equal to __________.
N a. 1 minute of longitude N b. 1 degree of longitude Y c. 1 minute of latitude N d. 1 degree of latitude 2186: You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 266°. What action should be taken?
N a. Adjust the compass with the athwartships magnets until the compass reads 268°. N b. Adjust the compass with the fore-and-aft magnets until the compass reads 270°. N c. Adjust the compass with the quadrantal spheres until the compass reads 274°. Y d. Adjust the compass with the fore-and-aft magnets until the compass reads 268°. 2244: Capella is found in what constellation?
N a. Gemini Y b. Auriga N c. Libra N d. Crab 2317: The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high (11.0 meters). If the visibility is 7.0 miles and your height of eye is 25 feet (7.6 meters), at what approximate distance will you sight the light?
Y a. 10.0 miles N b. 12.9 miles N c. 14.2 miles N d. 17.0 miles 2317: The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high (11.0 meters). If the visibility is 7.0 miles and your height of eye is 25 feet (7.6 meters), at what approximate distance will you sight the light?
Y a. 10.0 miles N b. 12.9 miles N c. 14.2 miles N d. 17.0 miles 2330: You are heading in a northerly direction when you come across an easterly current. Your vessel will __________.
Y a. be pushed to starboard N b. be pushed to port N c. decrease in engine speed N d. remain on course 2397: The letter D in illustration D006NG represents the __________.
N a. sensible horizon N b. celestial horizon N c. visible horizon Y d. geometrical horizon 2439: Which statement about the time diagram in illustration D008NG is TRUE? (D008NG )
Y a. You are in east longitude. N b. The Sun is setting for you. N c. Your date is different from the Greenwich date. N d. The GHA is approximately 160°. 2536: A revised print of a chart is made __________.
N a. after every major hydrographic survey of the area covered by the chart N b. when there are numerous corrections to be made or the corrections are extensive Y c. when a low-stock situation occurs and minor corrections are made N d. every two years to update the magnetic variation information 2597: You determine your vessel's position by taking a range and bearing to a buoy. Your position will be plotted as a(n) __________.
N a. fix N b. running fix Y c. estimated position N d. dead-reckoning position 2626: What information is found in the chart title?
N a. Date of the first edition N b. Date of the edition and, if applicable, the revision Y c. Information on the sounding datum N d. Information on which IALA buoyage system applies 2774: Your radar is set on a true motion display. Which of the following will NOT appear to move across the PPI scope?
Y a. Echoes from a buoy N b. Own ship's marker N c. Echo from a ship on the same course at the same speed N d. Echo from a ship on a reciprocal course at the same speed 2829: A spar buoy is indicated by which letter in illustration D044NG?
N a. A Y b. B N c. C N d. D 2924: You take a bearing of 264° of a lighthouse. What bearing of another object would give the best fix?
N a. 289° Y b. 350v N c. 081° N d. 120° 2938: You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?
N a. 000° N b. 021° N c. 189° Y d. 272° 2978: Where do you find the semidiameter correction to be used to correct sextant observations of the stars?
N a. It is included in the altitude corrections inside the front cover of the Nautical Almanac. N b. Table 25 in Bowditch contains the correction. N c. A correction of -0.5' should be applied to all star sights. Y d. No semidiameter correction is used. 3013: A white buoy with an orange rectangle on it displays __________.
Y a. directions N b. dangers N c. exclusion areas N d. All of the above 3085: An ECDIS is required to display which information?
N a. Water temperature N b. Climatology data N c. Speed of advance Y d. Depth contours 3106: What does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?
N a. 3000 Mhz and 9200 Mhz N b. 2182 Khz and 2187.5 Khz Y c. 156.525 Mhz, 161.975 Mhz and 162.025 Mhz N d. 1575.42 Mhz and 1227.6 Mhz