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.
34: The Local Notice to Mariners is usually published __________.
N a. daily Y b. weekly N c. monthly N d. semiannually 70: The station located at "A" is the __________. (D001NG )
N a. on station N b. off station Y c. master station N d. secondary station 100: You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from your position. The hurricane is moving towards 265°T at 22 knots. What course should you steer at 12 knots to have the maximum CPA?
N a. 219° Y b. 208° N c. 199° N d. 190° 307: The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.
N a. 60°W N b. 75°W Y c. 90°W N d. 105°W 312: The depth of water on a chart is indicated as 23 meters. This is equal to __________.
N a. 11.5 fathoms Y b. 12.6 fathoms N c. 69.0 feet N d. 78.6 feet 411: When entering from seaward, a buoy displaying a single-flashing red light would indicate __________.
N a. a junction with the preferred channel to the left N b. a sharp turn in the channel to the right Y c. the starboard side of the channel N d. a wreck to be left on the vessel's port side 432: When using a Lambert conformal chart in high latitudes, angles such as bearings are measured in reference to __________.
N a. the meridian through the object of the bearing Y b. the meridian through the ship's position N c. the meridian midway between the ship and the object N d. any meridian 479: You are enroute to assist vessel A. Vessel A is underway at 5 knots on course 063°T, and bears 136°T at 78 miles from you. What is the course to steer at 13 knots to intercept vessel A?
Y a. 114° N b. 158° N c. 295° N d. 340° 541: A yellow buoy may mark a(n) __________.
N a. wreck N b. shoal area Y c. anchorage area N d. middle ground 565: The letter B as shown represents the __________. (D006NG )
Y a. geoidal horizon N b. celestial horizon N c. visible horizon N d. sensible horizon 585: What great circle is always needed to form the astronomical triangle?
N a. Celestial Equator N b. Prime Meridian Y c. Celestial Meridian N d. Prime Vertical Circle 606: Early indications of the approach of a hurricane may be all of the following EXCEPT __________.
Y a. short confused swells N b. gradually increasing white clouds (mare's tails) N c. pumping barometer N d. continuous fine mist-like rain 665: 17 degrees of latitude is equal to __________.
N a. 68 miles N b. 510 miles Y c. 1020 miles N d. 4080 miles 675: 15° of latitude is equal to __________.
N a. 600 miles Y b. 900 miles N c. 1200 miles N d. 1500 miles 720: Which change in the condition of the seas could indicate the formation of a tropical storm or hurricane several hundred miles from your location?
Y a. A long swell from an unusual direction N b. A lengthy lull in the wind and seas N c. Large seas coming from different directions N d. A brisk chop from the southeast 727: What is an ebb current?
N a. A current at minimum flow N b. A current coming in Y c. A current going out N d. A current at maximum flow 738: Most GPS receivers use the Doppler shift of the carrier phase to compute __________.
N a. Latitude N b. Longitude Y c. Speed N d. Time 778: The navigable semicircle of a hurricane in the Northern Hemisphere is that area of the storm measured __________.
N a. from true north clockwise to 180°T N b. from true north counterclockwise to 180°T N c. from the bow counterclockwise to 180° relative Y d. from the direction of the storm's movement counterclockwise 180° 820: A position obtained by crossing lines of position taken at different times and advanced to a common time is a(n) __________.
N a. dead-reckoning position Y b. running fix N c. estimated position N d. fix 828: The true wind has been determined to be from 210°T, speed 12 knots. You desire the apparent wind to be 30 knots from 10° on the port bow. What course must you steer, and what speed must you make for this to occur?
Y a. 235°T, 18.6 knots N b. 245°T, 20.0 knots N c. 325°T, 22.4 knots N d. 335°T, 23.6 knots 848: It is unlawful to approach within how many yards of a northern right whale?
N a. 200 N b. 300 N c. 400 Y d. 500 873: Compass error is equal to the __________.
N a. deviation minus variation N b. variation plus compass course Y c. combined variation and deviation N d. difference between true and magnetic heading 937: The north equatorial current flows to the __________.
N a. east N b. northeast N c. southwest Y d. west 952: What is TRUE concerning new editions of Light Lists?
N a. Supplements to new editions are issued monthly by the U.S. Coast Guard. N b. New editions are published by the National Ocean Service. Y c. New editions are corrected through the date shown on the title page. N d. None of the above 1043: You are about to go to sea and adjust the magnetic compass. To expedite the adjustment at sea, in what order should the following dockside adjustments be made?
N a. Flinders bar first, then the heeling magnet and spheres N b. Heeling magnet first, then the Flinders bar and spheres Y c. Flinders bar first, then the spheres and heeling magnet N d. Spheres first, then the Flinders bar and heeling magnet 1090: What weather conditions would you expect to find at position A? (D049NG )
Y a. Winds NW-W at 15 knots, partly cloudy, and slight seas N b. winds SW-S at 20 knots, heavy rain, and rough seas N c. Winds calm, light rain, and calm seas N d. Winds NE-E at 20 knots, heavy rain, and rough seas 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 1171: A light that has a light period shorter than its dark period is described as __________.
Y a. flashing N b. pulsating N c. occulting N d. alternating 1292: A triangular daymark would be colored __________.
Y a. red N b. red and white N c. green N d. green and white 1393: The directive force of a gyrocompass __________.
N a. increases with latitude, being maximum at the geographic poles Y b. decreases with latitude, being maximum at the geographic equator N c. is greatest when a vessel is near the Earth's magnetic equator N d. remains the same at all latitudes 1399: You are bound for Baltimore via Cape Henry on a 15 knot ship. If the flood at Chesapeake Bay entrance begins at 1800 EST (ZD +5), at what time would you depart from the Chesapeake Bay entrance to have the most favorable current?
N a. 1700 hours N b. 1800 hours N c. 1900 hours Y d. 2030 hours 1424: Except for N-S courses, and E-W courses on the equator, a great circle track between two points, when compared to a rhumb line track between the same two points, will __________.
N a. always be nearer to the equator Y b. always be nearer to the elevated pole N c. be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere N d. be nearer to the pole or the equator depending on the latitudes of the arrival and departure positions 1439: The symbols shown are used on radio facsimile weather charts. The symbol indicated at letter "G" represents a __________. (D042NG )
N a. weather boundary N b. thunderstorm N c. wide spread sandstorm Y d. severe, line squall 1528: Cirrostratus clouds are indicated by which number? (D039NG )
N a. 1 Y b. 2 N c. 8 N d. 9 1612: The strongest winds and heaviest rains in a hurricane are found in the __________.
N a. outer bands N b. eye Y c. cloud walls N d. spiral rainbands 1615: The Illustration shows the symbols used on radio facsimile weather charts. Which symbol indicates snow? (D042NG )
N a. G N b. H Y c. M N d. N 1629: Air temperature varies with __________.
N a. the altitude above sea level N b. the season of the year N c. the latitude or distance from the equator Y d. All of the above 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 1709: The Beaufort scale is used to estimate the __________.
N a. wind direction N b. percentage of cloud cover Y c. wind speed N d. barometric pressure 1798: The climate of the northern Gulf coast __________.
N a. is humid and subtropical throughout the year N b. has an east coast marine type of climate Y c. is a warm marine type of climate N d. varies from warm to subtropical 1904: In the horizon system of coordinates what is equivalent to the parallels of declination of the celestial equator system?
N a. Vertical circles Y b. Parallels of altitude N c. Zenith distance N d. Azimuth angle 1974: Ocean currents are well defined and __________.
N a. create large waves in the direction of the current N b. change direction 360° during a 24 hour period Y c. remain fairly constant in direction and velocity throughout the year N d. are characterized by a light green color 2040: A vessel heading NNE is on a course of __________.
Y a. 022.5° N b. 045.0° N c. 067.5° N d. 090.0° 2061: Fog is likely to occur when there is little difference between the dew point and the __________.
N a. relative humidity Y b. air temperature N c. barometric pressure N d. absolute humidity 2085: Information about major breakdowns, repairs, or other emergency operations with regard to weirs and (or) wicket dams, on the western rivers, may be obtained from the __________.
Y a. Broadcast Notice to Mariners N b. Light List Vol. V N c. U.S. Coast Pilot N d. Sailing Directions 2161: Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 58s at the 1500 GMT time tick. What is the chronometer error?
N a. 03h 01m 58s fast Y b. 01m 58s fast N c. +2s N d. -2s 2181: Diagram Number D037NG represents a movable dam. If there is high water and the wickets are down so that there is an unobstructed navigable pass through the dam, what light(s) will be shown at D if the lock walls and piers are not awash?
Y a. One red light N b. Two red lights N c. Three red lights N d. No lights 2224: By convention, the north seeking ends of a compass' magnets are colored __________.
N a. black N b. blue Y c. red N d. white 2251: Which statement concerning the chartlet shown is TRUE? (Soundings and heights are in meters) (D010NG )
N a. Maury lightship is visible for 17 miles. N b. The bottom to the south-southeast of the lightship is soft coral. Y c. There is a dangerous eddy southeast of Beito Island. N d. There is a 12-meter deep west of Beito Island and inside the 5-meter line. 2258: The primary use of apparent time in marine navigation is to __________.
N a. calculate sunrise or sunset N b. determine zone time N c. enter an almanac Y d. determine the time of meridian transit 2384: On U.S. charts, you can tell if a named feature such as a rock (i.e. Great Eastern Rock in Block Island Sound) is submerged by the __________.
N a. color of ink used to print the name Y b. style of type used to print the name N c. dashed circle around the feature N d. magenta circle around the feature 2419: A backlash below a lock is defined as a __________.
N a. current setting your vessel on the wall N b. current setting into the lock chamber Y c. an eddy working along the lower guide wall N d. current setting counterclockwise 2459: The controlling depth of the river is __________.
N a. the minimum depth of the river prescribed in the channel maintenance program N b. the edge of a dredged channel N c. the highest level to which the river may rise without flooding Y d. the least available water in a channel which limits the draft of boats and tows 2544: At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool. What is the clearance if the gage reads 27.2 feet?
N a. 25.4 feet Y b. 57.4 feet N c. 60.6 feet N d. 72.6 feet 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 2828: The daily recurring pattern of pressure changes most noticeable in low latitudes is the __________.
N a. daily lapse reading Y b. diurnal variation of pressure N c. pressure tendency N d. synoptic pressure 2952: The channel under a bridge is marked with lights of the lateral system. The centerline of the channel shall be marked on the bridge by __________.
Y a. an occulting white light N b. a yellow light N c. three fixed white lights N d. a flashing blue light 2960: What is NOT found in the Mississippi River System Light List?
Y a. Distance that a lighted aid to navigation can be seen at night N b. Distance between major points on the Mississippi River N c. A color plate showing the details of the aids to navigation used on the Mississippi River N d. Times of Coast Guard broadcasts concerning river stages 3090: NOAA VHF weather reports are continuously broadcast on VHF channels WX-1, WX-2 and WX-3 on a frequency of __________.
N a. 156.8, 157.1, 162.55 MHz N b. 162.55, 162.00, 171.5 KHz Y c. 162.55, 162.40, 162.475 MHz N d. 2182, 2638, 2670 KHz 3110: While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.
N a. speed over ground N b. latitude and longitude N c. course over ground Y d. ship's scantlings