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.
88: Which position includes the effects of wind and current?
N a. Dead reckoning position N b. Leeway position Y c. Estimated position N d. Set position 90: When the moon is new or full, which type of tides occur?
N a. Neap Y b. Spring N c. Diurnal N d. Apogean 137: Priming of the tides occurs __________.
N a. at times of new and full Moon N b. when the Earth, Moon, and Sun are lying approximately on the same line N c. when the Moon is between first quarter and full and between third quarter and new Y d. when the Moon is between new and first quarter and between full and third quarter 152: A chart with a natural scale of 1:160,000 is classified as a __________.
N a. sailing chart Y b. general chart N c. coast chart N d. harbor chart 251: A mid-channel buoy, if lighted, will show a __________.
N a. fixed red light Y b. Morse (A) white light N c. green light N d. flashing red light 265: It is 1200 local time for an observer at 54°E longitude. Which statement is TRUE?
N a. It is afternoon at Greenwich. N b. It is midnight at 126°E longitude. Y c. The observer is in time zone -4. N d. All of the above are true. 288: When using a radar in a unstabilized mode, fixes are determined most easily from __________.
N a. center bearings N b. tangent bearings Y c. ranges N d. objects that are close aboard 321: Which buoy may be even numbered?
N a. Mid-channel buoy Y b. Unlighted nun buoy N c. Lighted green buoy N d. All of the above 326: You are steaming west in the North Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, the center of low pressure lies to the __________.
Y a. north N b. south N c. east N d. west 402: All of the following can be found on a Pilot Chart EXCEPT information concerning the __________.
N a. percentage of frequency of wave heights N b. percentage of poor visibility conditions N c. sea surface temperatures Y d. amounts of precipitation 442: In very high latitudes, the most practical chart projection is the __________.
N a. Mercator N b. gnomonic N c. azimuthal Y d. Lambert conformal 447: On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT?
Y a. 5.3 feet (1.6 m) N b. 5.6 feet (1.7 m) N c. 6.2 feet (1.9 m) N d. 6.8 feet (2.7 m) 561: Buoys which mark dredging areas are painted __________.
N a. black Y b. yellow N c. green N d. red 578: At about GMT 1436, on 3 December 1981, the lower limb of the Moon is observed with a sextant having an index error of 2.5' on the arc. The height of eye is 32 feet. The sextant altitude (hs) is 3°38.8'. What is the observed altitude?
N a. Ho 4°18.6' Y b. Ho 4°29.1' N c. Ho 4°36.3' N d. Ho 4°42.2' 588: You are underway on course 050°T and your maximum speed is 10 knots. The eye of a hurricane bears 100°T, 90 miles from your position. The hurricane is moving towards 285°T at 19 knots. If you maneuver at 10 knots to avoid the hurricane, what could be the maximum CPA?
N a. 39 miles N b. 45 miles Y c. 53 miles N d. 59 miles 600: The dangerous semicircle of a typhoon in the Southern Hemisphere is that area __________.
N a. measured from due south clockwise 180° N b. measured from due south counterclockwise 180° Y c. to the left of the storm's track N d. ahead of the typhoon measured from the storm's track to 90° on each side 609: A tropical wave is located 200 miles due west of your position, which is north of the equator. Where will the wave be in 24 hours?
Y a. Farther away to the west N b. Farther away to the east N c. In the same place N d. Closer and to the west 702: Which publication contains information on navigation regulations, landmarks, channels, anchorages, tides, currents, and clearances of bridges for Chesapeake Bay?
Y a. Coast Pilot N b. Light List N c. Sailing Directions N d. Pilot Charts 755: The sidereal day begins when the __________.
N a. Sun is over the lower branch of the reference meridian N b. Sun is over the upper branch of the reference meridian N c. first point of Aries is over the lower branch of the reference meridian Y d. first point of Aries is over the upper branch of the reference meridian 847: On a voyage from Halifax, N.S., to Dakar, West Africa, the Canary Current will __________.
N a. set the vessel to the left Y b. set the vessel to the right N c. offer resistance in the form of a head current N d. furnish additional thrust in the form of a fair or following current 875: Sidereal hour angle is always __________.
N a. measured westward from the hour circle containing the first point of Aries N b. measured from the point on the celestial sphere occupied by the Sun at the vernal equinox N c. subtracted from the LHA of the star to obtain the LHA of Aries Y d. All of the above 882: Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?
N a. Geographical positions outlining the area of the sector Y b. True bearings as observed from the ship toward the light N c. An outline of the area of the sector N d. True bearings as observed from the light toward the ship 1092: The wind velocity is higher in the dangerous semicircle of a tropical cyclone because of the __________.
N a. extension of the low pressure ridge Y b. wind circulation and forward motion of the storm N c. recurvature effect N d. direction of circulation and pressure gradient 1163: The total magnetic effects which cause deviation of a vessel's compass can be broken down into a series of components which are referred to as __________.
N a. divisional parts Y b. coefficients N c. fractional parts N d. equations 1208: Which type of cloud is indicated by the number 1? (D039NG )
Y a. Cirrus N b. Altostratus N c. Altocumulus N d. Nimbostratus 1345: A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbol in illustration D015NG?
N a. D N b. C Y c. B N d. A 1400: Which type of cloud is among the most dependable for giving an indication of an approaching weather system?
N a. Cumulus Y b. Altostratus N c. Cumulostratus N d. Nimbus 1492: You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?
N a. Coast Pilot Y b. Sailing Directions (Planning Guide) N c. Sailing Directions (Enroute) N d. World Port Index 1524: A barometric pressure reading of 29.92 inches of mercury is equivalent to __________.
Y a. 1013.25 millibars N b. 29.92 feet of water N c. 766 millimeters of mercury N d. 76 centimeters of water 1530: In shallow water, waves that are too steep to be stable, causing the crests to move forward faster than the rest of the wave, are called __________.
N a. rollers Y b. breakers N c. white caps N d. surfers 1583: The angle measured from the observer's meridian, clockwise or counterclockwise up to 180°, to the vertical circle of the body is the __________.
N a. local hour angle Y b. azimuth angle N c. meridian angle N d. observer's longitude 1638: Clouds form __________.
Y a. as a mass of warm, humid air rises into the atmosphere and cools, condensing moisture into small droplets N b. as winds blow across bodies of water, the sun causes the moisture to be absorbed and move upward forming clouds N c. dry air compresses moisture from the atmosphere into clouds N d. when the relative humidity of the atmosphere is low 1717: A tropical storm is a tropical cyclone that generates winds of __________.
N a. between 20 and 33 knots Y b. between 34 and 63 knots N c. over 63 knots N d. None of the above 1745: When your vessel is on the storm track but behind the storm's center the __________.
N a. wind direction remains steady N b. wind speed decreases N c. barometer rises Y d. All of the above 1763: Weather patterns in the Gulf Coast area of the United States are __________.
Y a. those of a transition zone between tropical and a temperate area N b. those of a tropical region N c. extremely hot in summer N d. tropical over Florida and subtropical over the rest of the Gulf Coast area 1771: Which type of precipitation is a product of the violent convection found in thunderstorms?
N a. Snow N b. Freezing Rain Y c. Hail N d. Sleet 1773: A "Norther" in the Gulf of Mexico is __________.
N a. a wind shift to the north accompanied by a drop in temperature N b. a forcible northerly wind of at least 20 knots N c. a strong northerly wind that generally occurs between November and March Y d. All of the above 1780: While in port, you can follow the approach of a dangerous cyclonic storm by inspecting __________.
N a. the Coast Pilot or Sailing Directions N b. the National Weather Service Observing Handbook No.1, Marine Surface Observations Y c. a newspaper N d. the sky overhead 1905: In order to insure that the racon signal is visible on your 3 cm radar, the __________.
N a. 10 cm radar should be placed on standby or turned off N b. gain control should be turned to maximum N c. radar should be stabilized, head up Y d. rain clutter control should be off but, if necessary, may be on low 1916: The prime vertical is the reference point from which the angle of which type of observation is measured?
N a. Sextant angle N b. Azimuth Y c. Amplitude N d. Local apparent noon 2062: 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? (D038NG )
Y a. One red light N b. Two red lights N c. Two green lights N d. Three green lights 2098: Which magnetic compass corrector(s) can be set while the vessel is on a heading of magnetic east or magnetic west?
N a. Quadrantal spheres N b. Heeling magnets Y c. Fore-and-aft magnets N d. Athwartships magnets 2140: The visible range marked on charts for lights is the __________.
N a. minimum distance at which the light may be seen with infinite visibility N b. minimum distance at which the light may be seen based on a 12 mile distance to visible horizon N c. maximum distance the light may be seen restricted by the height of the light and the curvature of the earth Y d. maximum distance at which a light may be seen in clear weather with 10 miles visibility 2189: 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 blue ends are to port and the athwartships tray is at the bottom, you should add some more magnets. N b. If the blue ends are to port and the athwartships tray is at the top, you should add some more magnets. N c. If the red ends are to port, you should lower the athwartships tray. Y d. If the red ends are to port and the tray is at the bottom, you should raise the tray. 2248: A vessel is heading magnetic north and its magnetic compass indicates a heading of 356°. What action should be taken to remove this error during compass adjustment?
N a. If the red ends of the magnets are to port you should raise the athwartships tray. N b. If the red ends of the magnets are to port, and the athwartships tray is at the top, you should add some more magnets. N c. If the red ends of the magnets are to starboard you should lower the athwartships tray. Y d. If the red ends of the magnets are to starboard, and the athwartships tray is at the top, you should add some more magnets. 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. 2483: A white buoy with an orange rectangle on it is used to indicate __________.
Y a. general information N b. an exclusion area N c. danger N d. a controlled area 2486: What is the equivalent of 23 min. 20 sec. in arc units?
N a. 16°40' N b. 12°32' N c. 9°28' Y d. 5°50' 2490: A vertex of the navigational triangle is NOT located at the __________.
N a. elevated pole N b. celestial body N c. zenith Y d. coaltitude 2508: Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from __________.
N a. low steel on the Huey P. Long Bridge Y b. mean sea level N c. the local water table N d. the minimum dam control level 2522: The letter H in illustration D006NG represents the __________. (D006NG )
N a. celestial horizon N b. geoidal horizon Y c. visible horizon N d. refractive horizon 2584: You must construct a Mercator plotting sheet on a piece of paper measuring 30" by 36". The area includes latitude 30°45'S to 37°15'S and longitude 004°00'E to 005°00'W. Allow a one 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 limitation?
N a. 3.09 inches N b. 3.22 inches N c. 3.41 inches Y d. 3.58 inches 2816: The length of a wave is the length __________.
N a. of the wave's crest N b. of the wave's trough N c. measured from crest to trough Y d. measured from crest to crest 2958: Drawbridges equipped with radiotelephones display a __________.
N a. day signal of a yellow diamond marked with the call sign N b. white sign with the number 16 and the call sign on it N c. black and white diamond marked with RT 16 Y d. blue and white sign showing the radio's channels 3038: In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at __________.
N a. noon N b. noon and midnight N c. 1000 and 2200 Y d. 0400 and 1600 3052: The Sailing Directions contain information on __________.
N a. required navigation lights N b. lifesaving equipment standards N c. casualty reporting procedures Y d. currents in various locations 3060: What information is NOT found in the chart title?
N a. Survey information N b. Scale Y c. Date of first edition N d. Projection 3062: If the electronic chart is part of an ECDIS, it must display the minimum data required by IMO/IHO, to include all of the following EXCEPT __________.
N a. hydrography N b. aids to navigation Y c. tidal currents N d. regulatory boundaries 3062: If the electronic chart is part of an ECDIS, it must display the minimum data required by IMO/IHO, to include all of the following EXCEPT __________.
N a. hydrography N b. aids to navigation Y c. tidal currents N d. regulatory boundaries 3067: Which of the following are data layer categories to be displayed on ECDIS?
N a. ECDIS warnings and messages N b. Hydrographic Office data N c. Notice to Mariners information Y d. All of the above