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.
9: When displayed under a single-span fixed bridge, red lights indicate __________.
Y a. the channel boundaries N b. that vessels must stop N c. the bridge is about to open N d. that traffic is approaching from the other side 10: The wind at Frying Pan shoals has been northwesterly at an average velocity of 22 knots. The predicted set and drift of the rotary current are 125° at 0.6 knot. What current should you expect?
Y a. 119° at 0.9 knot N b. 172° at 1.1 knots N c. 225° at 0.6 knot N d. 340° at 0.4 knot 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 145: The standard time meridian for zone description -1 is __________.
N a. 0° N b. 7 1/2°W N c. 7 1/2°E Y d. 15°E 179: You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up on a compass course of 180° with the range in line dead ahead. This indicates that you(r) __________.
N a. must come right to get on the range N b. course is in error Y c. compass has some easterly error N d. are being affected by a southerly current 262: Which of the buoy symbols shown indicates a safe water mark? (D032NG )
N a. A N b. B N c. C Y d. D 313: The Loran-C receiver __________.
N a. is not affected by interference N b. can be used at any distance with accuracy Y c. can be affected by interference N d. is reliable only from sunrise to sunset 315: Which statement about the time diagram shown DO08NG is TRUE?
N a. You are in west longitude. N b. Your date is ahead of Greenwich. Y c. The meridian angle of the Sun is east. N d. The GHA of the Sun is less than 180°. 338: The illustration shows the symbols used on radio facsimile weather charts. The symbol indicated at letter "N" represents __________. (D042NG )
N a. hail N b. freezing rain Y c. rain N d. snow 392: A pilot chart does NOT contain information about __________.
N a. average wind conditions Y b. tidal currents N c. magnetic variation N d. average limits of field ice 416: A ship is on course 195° at a speed of 15 knots. The apparent wind is from 40° on the port bow, speed 30 knots. The direction and speed of the true wind are __________.
N a. 068°T, 30 knots Y b. 127°T, 21 knots N c. 263°T, 42 knots N d. 292°T, 42 knots 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 502: A gnomonic projection is based on a(n) __________.
Y a. plane tangent at one point N b. cylinder tangent at the equator N c. cone tangent at one parallel N d. infinite series of cones tangent at selected parallels 525: In the celestial equator system of coordinates, what is comparable to latitude on the terrestrial sphere?
N a. Altitude N b. Right ascension N c. Celestial meridians Y d. Declination 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 677: A swift current occurring in a narrow passage connecting two large bodies of water, which is produced by the continuously changing difference in height of tide at the two ends of the passage, is called a __________.
Y a. hydraulic current N b. rectilinear current N c. rotary current N d. harmonic current 697: The set of the current is the __________.
N a. speed of the current at a particular time N b. maximum speed of the current N c. direction from which the current flows Y d. direction in which the current flows 1022: What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is 37 feet (11.6 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 24.8 nm Y b. 17.8 nm N c. 15.9 nm N d. 10.3 nm 1083: Magnets are placed in horizontal trays in the compass binnacle to compensate for the __________.
N a. induced magnetism in the vessel's horizontal soft iron N b. change in the magnetic field when the vessel inclines from vertical Y c. permanent magnetism of the vessel N d. magnetic fields caused by electrical currents in the vicinity 1085: A chart position enclosed by a semi-circle is a(n) __________.
N a. fix N b. estimated position Y c. dead reckoning position N d. running fix 1097: The velocity of a rotary tidal current will be decreased when the Moon is __________.
Y a. at apogee N b. new N c. full N d. All of the above 1105: The Light List shows that a navigational light has a nominal range of 22 miles and a height above water of 48 feet (14.6 meters). Your height of eye is 35 feet (10.7 meters) and the visibility is 20.0 miles. At what approximate range will you first sight the light?
N a. 10.5 nm N b. 13.2 nm Y c. 14.7 nm N d. 32.0 nm 1175: Solid green arrows on the main body of a pilot chart indicate __________.
N a. prevailing wind directions Y b. prevailing ocean current directions N c. probable surface current flow N d. shortest great circle routes 1178: The range of tide is the __________.
N a. distance the tide moves out from the shore Y b. difference between the heights of high and low tide N c. duration of time between the high and low tide N d. maximum depth of the water at high tide 1189: Concerning a celestial observation, the azimuth angle is measured from the principal vertical circle to the ____________ .
N a. Greenwich celestial meridian N b. hour circle of the body N c. local celestial meridian Y d. vertical circle of the body 1193: If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism __________.
N a. increases N b. remains the same Y c. decreases N d. is unimportant and may be neglected 1253: The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is __________.
Y a. deviation N b. variation N c. compass error N d. dip 1292: A triangular daymark would be colored __________.
Y a. red N b. red and white N c. green N d. green and white 1316: When a warm air mass overtakes a cold air mass, the contact surface is called a __________.
N a. line squall N b. water spout N c. cold front Y d. warm front 1326: A cloud sequence of cirrus, cirrostratus, and altostratus clouds followed by rain usually signifies the approach of a(n) __________.
N a. occluded front N b. stationary front Y c. warm front N d. cold front 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 1414: You are planning a voyage from New York to Norway via the English Channel. Which publication contains information on the dangers to navigation in the English Channel?
N a. Channel Pilot's Guide N b. World Port Index N c. Coast Pilot Y d. Sailing Directions (Enroute) 1459: In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is __________.
N a. ahead of the storm center N b. in the dangerous semicircle Y c. in the navigable semicircle N d. directly in the approach path of the storm 1464: A line of position derived from a loran reading is a section of a(n) __________.
N a. straight line N b. arc N c. parabola Y d. hyperbola 1502: You are running parallel to the coast and take a running fix using bearings of the same object. If you are making less speed than used for the running fix, in relation to the position indicated by the fix, you will be __________.
Y a. closer to the coast N b. farther from the coast N c. on the track line ahead of the fix N d. on the track line behind the fix 1687: Which statement is TRUE when comparing cold and warm fronts?
Y a. Cold fronts are more violent and of shorter duration. N b. Cold fronts are milder and last longer. N c. They are very similar with the exception of wind direction. N d. Warm fronts are more violent and of longer duration. 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 1866: What term is used to describe a tank barge constructed with the structural framing inside the cargo tank and the side shell plating containing the cargo?
Y a. Single hull N b. Shell plated N c. Hopper type N d. Independent tank 1934: The great circle of the celestial sphere that passes through the zenith, nadir, and the eastern point of the horizon is the __________.
N a. principal vertical N b. hour circle N c. celestial meridian Y d. prime vertical 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° 2048: You are upbound approaching a lock and dam and see two green lights in a vertical line. This indicates __________.
Y a. the downstream end of an intermediate wall N b. that a double lockage is in progress N c. the downstream end of the land wall N d. the navigable pass of a fixed weir dam 2058: Illustration D038NG represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D in the illustration? (D038NG )
N a. One red light N b. Two green lights Y c. Three green lights N d. No lights 2078: If a towboat requires a double lockage it shall give which sound signal at a distance of not more than one mile from the lock?
N a. One short blast followed by two long blasts N b. One long blast followed by one short blast N c. Two long blasts followed by one short blast Y d. One long blast followed by two short blasts 2103: The description "Racon" beside an illustration on a chart would mean a __________.
N a. radar calibration beacon N b. circular radio beacon N c. radar conspicuous beacon Y d. radar transponder beacon 2176: The illustration 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? (D037NG )
N a. Three red lights N b. Two red lights Y c. One red light N d. One amber light 2203: You get underway from the shipyard in Chester, PA, at 1515 DST (ZD +4) on 6 August 1983, enroute to sea. You will be turning for eight knots. What current can you expect at Fourteen Foot Bank Light?
N a. Slack Y b. 1.3 knots ebbing N c. 1.7 knots ebbing N d. 0.5 knot ebbing 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 2294: What celestial body may sometimes be observed in daylight?
N a. New Moon N b. Saturn N c. Sirius Y d. Venus 2341: Which statement concerning illustration D010NG is correct? (Soundings and heights are in meters)
N a. Maury Lightship swings about her anchor on a circle with a 21-meter diameter. N b. The position of the lightship is indicated by the center of the star on the symbol's mast. Y c. The sunken wreck southwest of Beito Island shows the hull or superstructure above the sounding datum. N d. There is a 12-meter deep hole inside the 5-meter curve just west of Beito Island. 2400: You are in a channel in U.S. waters near an industrial plant with a load/discharge facility for barges. You see an emergency rotating flashing light on the facility light up. What does this indicate?
N a. A barge at the facility has commenced transferring a hazardous cargo. N b. A barge carrying a hazardous cargo is mooring or unmooring at the facility. N c. The facility is warning a barge to shut down transfer operations due to weather conditions (electrical storm, tornado, hurricane, etc.). Y d. There is danger at the facility due to a fire or cargo release. 2424: Under the IALA-B Buoyage System, when entering from seaward a lateral system buoy to be left to starboard may display which of the topmarks shown? (D046NG )
Y a. A N b. B N c. C N d. D 2446: What is the equivalent of 47 min. 20 sec. in arc units?
N a. 8°27' Y b. 11°50' N c. 13°42' N d. 13°56' 2679: Under the U.S. Aids to Navigation System on the Western Rivers, a daymark on the right descending bank will __________.
Y a. be green N b. have an odd number N c. indicate the gage reading N d. have yellow retroreflective markings 2705: Information about the direction and velocity of rotary tidal currents is found in the __________.
Y a. Tidal Current Tables N b. Mariner's Guide N c. Tide Tables N d. Nautical Almanac 2710: In the horizon system of coordinates what is equivalent to the local hour angle of the celestial equator system?
N a. Altitude Y b. Azimuth N c. Zenith distance N d. Colongitude 2737: A lateral system buoy displaying a quick light __________.
N a. should be passed close aboard on either side Y b. indicates that special caution is required N c. is used at a channel bifurcation or junction N d. is painted with red and white vertical stripes 2918: Which agency maintains federal aids to navigation?
N a. Corps of Engineers Y b. Coast Guard N c. National Ocean Service N d. Maritime Administration 2925: A single line of position combined with a dead-reckoning position results in a(n) __________.
N a. running fix N b. fix N c. assumed position Y d. estimated position 2977: Which symbol represents a 2-fathom curve?
N a. -- -- -- N b. .. ____ .. ____ .. ____ N c. ____ . ____ . ____ . Y d. .. .. .. .. .. 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