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.
91: A preferred-channel buoy will show a __________.
N a. white light whose characteristic is Morse (A) N b. group-occulting white light N c. composite group-flashing (2 + 1) white light Y d. composite group-flashing (2 + 1) red or green light 135: The standard meridian for the time zone +1 is __________.
N a. 0° N b. 7 1/2°W Y c. 15°W N d. 7 1/2°E 151: Under the U.S. Aids to Navigation System, spherical buoys may be __________.
N a. numbered Y b. lettered N c. lighted N d. All of the above 185: A ship is in longitude 54°00'W on a true course of 270°. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?
N a. 45°00'W N b. 52°30'W N c. 60°00'W Y d. 67°30'W 352: Which chart projection would be most suitable for marine surveying?
N a. Gnomonic N b. Lambert conformal N c. Mercator Y d. Polyconic 436: A wind vane on a moving vessel shows __________.
N a. dead reckoning wind direction N b. true wind direction Y c. apparent wind direction N d. estimated wind direction 451: Which light characteristic may be used on a special purpose mark?
Y a. Fixed N b. Occulting N c. Equal interval N d. Quick flashing 485: A phase correction is applied to observations of __________.
N a. the Sun N b. stars Y c. planets N d. All of the above 496: Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.
N a. Indian Ocean N b. North Pacific Ocean N c. South Pacific Ocean Y d. South Atlantic Ocean 649: You are on course 226°T. In order to check the latitude of your vessel, you should observe a celestial body on which bearing?
N a. 226° N b. 270° Y c. 000° N d. 026° 666: In the Northern Hemisphere, your vessel is believed to be in the direct path of a hurricane, and plenty of sea room is available. The best course of action is to bring the wind on the __________.
N a. starboard bow, note the course, and head in that direction Y b. starboard quarter, note the course, and head in that direction N c. port quarter, note the course, and head in that direction N d. port bow, note the course, and head in that direction 683: A radar contact will remain stationary on a relative motion radar display only when it is __________.
N a. on the same course as your vessel N b. at the same speed as your vessel Y c. on the same course and speed as your vessel N d. on a reciprocal course at the same speed as your vessel 704: What is TRUE of the history display of a target's past positions on an ARPA?
N a. It provides a graphic display to emphasize which vessel is on a collision course. Y b. In the true presentation, it provides a quick visual check to determine if a vessel has changed course. N c. The display is one of the primary inputs and must be in use when using the trial maneuver capability. N d. It provides a graphic display of a target vessel's relative course, speed, and CPA. 733: What would give the best radar echo?
N a. The beam of a three masted sailing vessel with all sails set. N b. A 110-foot fishing vessel with a radar reflector in its rigging. N c. A 300-foot tanker, bow on. Y d. A 600-foot freighter, beam on. 775: A sidereal day is shorter than a solar day. This difference is due to __________.
N a. irregularities in the daily rotational rate of the Sun N b. the space motion of the solar system N c. the precession of the equinoxes Y d. the use of different reference points 782: Mariners are FIRST warned of serious defects or important changes to aids to navigation by means of __________.
Y a. marine broadcast Notice to Mariners N b. Weekly Notices to Mariners N c. corrected editions of charts N d. Light Lists 1072: What is the approximate geographic range of Assateague Light, VA, if your height of eye is 52 feet (15.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 14.1 nm N b. 21.8 nm Y c. 23.0 nm N d. 50.2 nm 1166: A series of brief showers accompanied by strong, shifting winds may occur along or some distance ahead of a(n) __________.
N a. upper front aloft N b. cyclone N c. occluded front Y d. cold front 1267: What will be the velocity of the tidal current at Coxsackie, NY, at 0945 EST (ZD +5) on 11 March 1983?
N a. 0.3 knot Y b. 0.7 knot N c. 1.2 knots N d. 1.9 knots 1387: You will be entering the Mystic River in Connecticut. What is the current at the Highway Bridge at 1900 EST (ZD +5) on 24 January 1983?
N a. 2.2 knots flooding N b. Slack water Y c. Slight ebb N d. 2.5 knots ebbing 1388: If you observe a rapid fall of barometric pressure you should __________.
N a. call the Coast Guard to verify the change N b. know the barometer is not working properly N c. contact the NWS or a local radio station Y d. prepare for the onset of stormy weather with strong winds 1394: A great circle crosses the equator at 17°W. It will also cross the equator at what other longitude?
N a. 173°W N b. 117°W Y c. 163°E N d. 17°E 1512: You are plotting a running fix. The LOP to be run forward is an arc from a radar range, what technique should be used?
N a. The arc should be converted into a straight line using offsets and then run forward. N b. An arc should never be run forward. Y c. The position of the object observed should be advanced to the new time and a new arc swung using the radius of the old arc. N d. The distance between LOP's should be added to the radar range and a new arc swung. 1515: An aneroid barometer on a boat should always be __________.
N a. located in an air-conditioned area N b. mounted in the passenger compartment N c. protected by a collision bulkhead Y d. permanently mounted 1538: The winds of the "roaring forties" are strongest near __________.
N a. 40°N N b. 50°N N c. 40°S Y d. 50°S 1545: The change in the length of day becomes greater as latitude increases because of the __________.
N a. inclination of the diurnal circle to the equator N b. decreasing distance between the terrestrial meridians Y c. increased obliquity of the celestial sphere N d. changing distance between the earth and the sun 1587: In general, the most effective period for observing stars and planets occurs during the darker limit of __________.
N a. sunset Y b. civil twilight N c. nautical twilight N d. astronomical twilight 1604: The Illustration shows the symbols used on radio facsimile weather charts. Which of these symbols indicates freezing rain? (D042NG )
N a. M N b. N N c. O Y d. P 1646: Which picture in illustration D034NG shows a flashing light? (D034NG )
N a. A N b. B Y c. C N d. D 1647: Cumulonimbus clouds are formed by __________.
Y a. vertical air movements N b. heavy rainstorms N c. horizontal air movements N d. any movement of moist air 1675: You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading, preparing to drop anchor, when you observe the range lights as shown on your starboard beam. You should __________. (D047NG )
N a. NOT drop the anchor until the lights are in line Y b. ensure your ship will NOT block the channel or obstruct the range while at anchor N c. drop the anchor immediately as the range lights mark an area free of obstructions N d. drop the anchor immediately as a change in the position of the range lights will always be an indication of dragging anchor 1690: In regions near the poles, the winds are generally described as __________.
N a. westerlies Y b. easterlies N c. northerlies N d. southerlies 1702: In a cyclone the lowest pressure is found in the __________.
Y a. center N b. outer edge N c. warm front N d. cold front 1719: What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?
N a. Clockwise and outward Y b. Counterclockwise and inward N c. Counterclockwise and outward N d. Clockwise and inward 1841: The letter A as shown represents the __________. (D006NG )
Y a. sensible horizon N b. geoidal horizon N c. visible horizon N d. celestial horizon 1910: What sextant correction corrects the apparent altitude to the equivalent reading at the center of the Earth?
N a. Phase Y b. Parallax N c. Semidiameter N d. Augmentation 1978: A celestial body's complete orbit around another body is __________.
N a. a rotation Y b. a revolution N c. space motion N d. nutation 2006: What is the relative bearing of an object broad on the port beam?
N a. 315° N b. 300° Y c. 270° N d. 235° 2073: Chart legends printed in capital letters show that the associated landmark is __________.
N a. a radio transmitter N b. a government facility or station N c. inconspicuous Y d. conspicuous 2179: A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. The quadrantal spheres are arranged athwartships. What action should be taken to remove this error during compass adjustment?
N a. If the quadrantal spheres are all of the way in, replace them with larger ones. N b. If the quadrantal spheres are all of the way out, remove one of the spheres. N c. If the quadrantal spheres are all of the way out, move the spheres in. Y d. If the quadrantal spheres are all of the way out, replace them with smaller spheres. 2194: A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?
N a. If the red ends of the magnets are forward you should lower the fore-and-aft magnets. N b. If the blue ends of the magnets are forward you should lower the fore-and-aft magnets. Y c. If the blue ends of the magnets are to port and the athwartships tray is at the bottom you should reverse the magnets. N d. If the blue ends of the magnets are to port and the athwartships tray is at the top you should add some magnets. 2230: A nautical mile is a distance of approximately how much greater than or less than a statute mile?
N a. 1/4 less N b. 1/7 less N c. 1/4 greater Y d. 1/7 greater 2264: The revision date of a chart is printed on which area of the chart?
N a. Top center Y b. Lower-left corner N c. Part of the chart title N d. Any clear area around the neat line 2328: Universal time (UTI) is another name for __________.
N a. sidereal time Y b. Greenwich mean time N c. ephemeris time N d. atomic time 2332: Magnetic dip is a measurement of the angle between the __________.
N a. geographic pole and the magnetic pole N b. lubber's line and true north Y c. horizontal and the magnetic line of force N d. compass heading and the magnetic heading 2351: A position obtained by applying ONLY your vessel's course and speed to a known position is a __________.
N a. running fix N b. probable position N c. fix Y d. dead-reckoning position 2406: The dividing meridian between zone descriptions +4 and +5 is __________.
Y a. 67°30'W N b. 90°00'W N c. 67°30'E N d. 75°00'E 2409: You are approaching the first of two drawbridges that span a narrow channel. The second drawbridge is close to the first. Which signals should you sound?
N a. Sound the request-for-opening signal for the first bridge only, who will notify the second bridge of your approach N b. Sound the request-for-opening signal twice in succession to indicate you must pass through both bridges N c. Sound the request-for-opening signal, pause for about 10 seconds, then sound two prolonged blasts. Y d. Sound the request-for-opening signal and, after the bridge acknowledges it, sound the request-for-opening signal for the second bridge. 2442: You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic north but the compass reads 004°. You should now adjust the compass until it reads __________.
N a. 356° N b. 358° N c. 000° Y d. 002° 2480: You are on course 277°T and take a relative bearing of a lighthouse of 045°. What is the true bearing to the lighthouse?
N a. 038° N b. 232° N c. 315° Y d. 322° 2514: Sidereal time is NOT used __________.
N a. as the basis for star charts N b. to enter a star finder N c. in sight reduction using Pub 249 Y d. in sight reductions of planet observations 2532: You must construct a Mercator plotting sheet on a piece of paper measuring 28" by 32". The area includes latitude 32°S to 39°S and longitude 005°E to 003°W. Allow a one-half inch neat line on all sides. What is the maximum distance between each degree of longitude that will permit the area of the plotting sheet to be drawn within the stated limitations?
Y a. 3.38 inches N b. 3.62 inches N c. 3.79 inches N d. 3.95 inches 2585: The letter D as shown represents the __________. (D006NG )
N a. visible horizon Y b. geometrical horizon N c. sensible horizon N d. celestial horizon 2619: In low latitudes, a first quarter Moon will always rise at about __________.
N a. sunrise Y b. 1200 LMT N c. sunset N d. 2400 LMT 2741: A general chart could have a scale of __________.
Y a. 1:200,000 N b. 1:1,000,000 N c. 1:50,000 N d. not more than 1:25,000 2750: When pushing a tow and approaching barges tied off to the shore, you should __________.
N a. increase speed so you will pass faster Y b. decrease speed while passing so you won't create a suction N c. do nothing different as the barges should be tied off properly N d. move to the opposite side of the channel from the barges and increase speed 2782: Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope.
Y a. Own ship's marker N b. Echo from a ship at anchor N c. Echoes from land masses N d. All of the above 2937: The depth of the water is indicated on a chart as 32 meters. This is equal to __________.
N a. 11.50 fathoms N b. 12.62 fathoms Y c. 17.50 fathoms N d. 104.99 fathoms 3070: The database information that should be shown when a chart is first displayed on ECDIS is the __________.
N a. display base information Y b. standard display information N c. system electronic nautical chart N d. chart display information 3113: With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
N a. Call sign N b. Vessel's draft N c. Route plan Y d. None of the above