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.
8: When you are steering on a pair of range lights and find the upper light is above the lower light you should __________.
N a. come left N b. come right Y c. continue on the present course N d. wait until the lights are no longer in a vertical line 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° 230: If the LORAN-C ground wave does NOT extend out as far as the skywave skip distance, there will be a skip zone in which __________.
Y a. no LORAN-C signal is received N b. only ground waves are received N c. only skywaves are received N d. both ground waves and skywaves are received 270: 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. drop the anchor immediately as the range lights mark an area free of obstructions N b. drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor Y c. ensure your ship will NOT block the channel or obstruct the range while at anchor N d. NOT drop the anchor until the lights are in line 345: A navigator fixing a vessel's position by radar __________.
N a. should never use radar bearings N b. should only use radar bearings when the range exceeds the distance to the horizon Y c. can use radar information from one object to fix the position N d. must use information from targets forward of the beam 370: Prevailing winds between 30°N and 60°N latitude are from the __________.
N a. north N b. south N c. east Y d. west 379: The steady current circling the globe at about 60°S is the __________.
N a. Prevailing Westerly N b. Sub-Polar Flow Y c. West Wind Drift N d. Humboldt Current 404: An aneroid barometer is an instrument __________.
N a. used to measure the speed of wind Y b. in which the pressure of the air is measured N c. that tells which direction a storm is coming from N d. used to measure the height of waves 440: You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T. The range appears as shown and is closing. Which action should you take? (D047NG )
N a. Continue on the present heading until the range is in line, then alter course to the left. N b. Immediately alter course to the right to bring the range in line. N c. Immediately alter course to 309°T. Y d. Continue on course until the range is closed, then alter course to the right. 478: The velocity of the apparent wind can be more than the true wind, and come from the same direction, if certain conditions are present. One condition is that the __________.
N a. ship's speed must be less than the true wind velocity N b. true wind must be from dead astern N c. true wind velocity must be faster than the ship's speed Y d. true wind must be from dead ahead 491: A special purpose buoy shall be __________.
N a. lighted with a white light N b. striped black and red N c. lighted with a red light Y d. yellow 535: The tropical year differs from which year by 20 minutes?
N a. Astronomical year N b. Natural year N c. Equinoctial year Y d. Sidereal year 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' 607: The charted depth alongside the south face of Mystic Pier, Charlestown, MA, is 35 feet. Your maximum draft is 38 feet. You wish to have 2 feet under the bottom, on a rising tide, when you go alongside to discharge a heavy lift. What is the earliest time after 0900 EST (ZD +5), on 2 February 1983, that you can dock?
N a. 1020 N b. 1050 N c. 1127 Y d. 1137 654: Your ARPA has automatic speed inputs from the log. Due to currents, the log is indicating a faster speed than the speed over the ground. What should you expect under these circumstances?
N a. The generated CPA will be less than the actual CPA. N b. The generated TCPA will be later than the actual TCPA. N c. The range of initial target acquisition will be less than normal. Y d. The targets true course vector will be in error. 678: On 25 December 1981 you observe the Sun's lower limb. The sextant altitude (hs) is 4°06.9'. The height of eye is 47 feet and the index error is 1.6' on the arc. The temperature is 19°F. and the barometer reads 1030.8 millibars. What is the observed altitude (Ho)?
N a. 3°57.4' Y b. 4°01.9' N c. 4°02.5' N d. 4°03.4' 707: Set of the current is __________.
N a. its velocity in knots N b. direction from which it flows N c. estimated current Y d. direction towards which it flows 785: An amplitude of the Sun in high latitudes __________.
N a. is most accurate before sunrise N b. is most accurate after sunset N c. should only be observed when the Sun's lower limb is above the horizon Y d. is most accurate when the Sun's center is observed on the visible horizon 789: The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm __________.
Y a. to the right of the storm's track N b. measured from true north clockwise to 180°T N c. measured from true north counterclockwise to 180°T N d. between the ship's heading and the bearing to the eye 849: The Light List shows that a navigational light has a nominal range of 12 miles and a height above water of 25 feet (7.6 meters). Your height of eye is 30 feet (9.1 meters) and the visibility is 0.5 mile. At what approximate range will you first sight the light?
N a. 0.5 mile Y b. 1.4 miles N c. 5.2 miles N d. 12.0 miles 901: Under the IALA-A Buoyage System, a buoy indicating that the preferred channel is to port when entering from seaward, can have a __________.
N a. can shape N b. group-flashing (2) light N c. red-and-green vertical stripes Y d. green light 911: Under the IALA-B Buoyage System, a buoy displaying a red light will __________.
Y a. be left to starboard when entering from seaward N b. show a light characteristic of Morse Code "A" N c. be lettered N d. have a radar reflector 971: You are in British waters on course 090°T when you sight a flashing white light with a characteristic of VQ(9)10s. You immediately change course to 030°T. After one hour, you sight another flashing white light with the characteristic of VQ. You must pass well __________.
N a. south of this buoy N b. west of this buoy Y c. north of this buoy N d. east of this buoy 1049: At 0000 you fix your position and change course to 270°T. At 0030 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?
N a. The set is 090°, drift 0.5 knot. Y b. The set is 090°, drift 1.0 knot. N c. The set is 270°, drift 0.5 knot. N d. The set is 270°, drift 1.0 knot. 1055: The radius of a circle of equal altitude for a body equals the body's __________.
N a. declination N b. polar distance N c. altitude Y d. zenith distance 1073: Chart legends printed in capital letters show that the associated landmark is __________.
N a. inconspicuous N b. a radio transmitter Y c. conspicuous N d. a government facility or station 1080: Information on northern right whales can be found in __________.
Y a. the Coast Pilot N b. HO 229 N c. the Nautical Almanac N d. Ship's Medicine Chest and Medical Aid at Sea 1091: The cardinal mark topmark shown in illustration D024NG represents which quadrant? (D024NG )
N a. Northern N b. Eastern N c. Southern Y d. Western 1128: In 1981, when would Jupiter and Saturn be visible in temperate latitudes for both evening and morning stars?
N a. 10 January Y b. 27 March N c. 22 June N d. 8 October 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 1219: Which sextant in illustration D043NG reads 29°42.5'? (D043NG )
N a. A N b. B N c. C Y d. D 1245: You can follow the approach of a dangerous cyclonic storm by inspecting __________.
Y a. a newspaper, a weather map, a weather fax, or a weather forecast N b. the National Weather Service Observing Handbook No.1, Marine Surface Observations N c. the Coast Pilot or Sailing Directions N d. the sky overhead 1284: The Sailing Directions (Enroute) contain information on all of the following EXCEPT __________.
Y a. ocean currents N b. outer dangers to navigation N c. tidal currents N d. major port anchorages 1357: You will transit the Cape Cod Canal on 7 November 1983. If you arrive at the R R Bridge at 1655 EST (ZD +5), for what period of time during your transit will you have currents of not more than 0.5 knot?
N a. 1631 to 1719 N b. 1638 to 1655 Y c. 1648 to 1702 N d. 1655 to 1709 1389: A boundary between two air masses is a(n) __________.
N a. lapse rate N b. isobar Y c. front N d. continent 1418: Static on your AM radio may be __________.
Y a. an indication of nearby thunderstorm activity N b. an indication of "clearing" weather N c. of no meteorological significance N d. a sign of strong winds 1454: Atmospheric pressure may be measured with a(n) __________.
N a. barograph N b. aneroid barometer N c. mercurial barometer Y d. All of the above 1503: A radar range to a small, charted object such as a light will provide a line of position in which form?
N a. Straight line Y b. Arc N c. Parabola N d. Hyperbola 1507: When you are steering on a pair of range lights and find the upper light is above the lower light you should __________.
N a. come right N b. come left N c. wait until the lights are no longer in a vertical line Y d. continue on the present course 1516: Which correction(s) must be applied to an aneroid barometer?
Y a. Instrument error and height error N b. Instrument error only N c. Height error only N d. Instrument error and latitude correction 1534: You are preparing a weather report form, WS Form B-80. Your position is LAT 22°31'S, LONG 138°19'W. How would this be encoded? (D041NG )
N a. LAT 22.5°S, LONG 138.3°W Y b. 99225, 51383 N c. L2231, 53819 N d. 2231S, 5383W 1618: The Light List indicates that a light has a nominal range of 14 miles and is 26 feet high. If the visibility is 4 miles and your height of eye is 20 feet, at what approximate distance will you sight the light?
Y a. 7.5 miles N b. 9.6 miles N c. 11.2 miles N d. 14.0 miles 1673: Information about currents on the Pacific Coast of the U. S. is found in the __________.
N a. Nautical Almanac Y b. Tidal Current Tables N c. Ocean Current Tables N d. Tide Tables 1730: If you observe the point of cloud convergence shifting to the right and the "bar" of the storm appears to move along the horizon __________.
Y a. the center of the storm will by-pass you N b. the storm will strike you on the starboard side N c. you are in the direct path of the storm and should take immediate steps to batten down loose gear N d. the storm is starting to break up 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 1804: Magnetic information on a chart may be __________.
N a. found in the center(s) of the compass rose(s) N b. indicated by isogonic lines N c. found in a note on the chart Y d. All of the above 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 2236: Which is TRUE of a downbound power-driven vessel, when meeting an upbound vessel on the Western Rivers?
N a. She has the right of way. N b. She shall propose the manner of passage. N c. She shall initiate the maneuvering signals. Y d. All of the above 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 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 2722: The paths of intended travel between three or more points is the __________.
N a. course Y b. track N c. bearing N d. course over the ground 2779: The buoy indicated by the letter B in illustration D044NG is a __________.
N a. nun N b. can Y c. spar N d. pillar 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 2836: The correction tables in the front of the Nautical Almanac for use with sun sights do NOT include the effects of __________.
N a. mean refraction N b. parallax N c. semidiameter Y d. irradiation 2941: During daylight savings time the meridian used for determining the time is located farther __________.
N a. west in west longitude and east in east longitude N b. east in west longitude and west in east longitude Y c. east N d. west 3002: The diurnal variation of pressure is most noticeable __________.
N a. above the polar circles N b. in a low pressure area N c. during periods of low temperatures Y d. in the doldrums 3031: Which symbol would indicate a large automated navigational buoy, such as those that have replaced some lightships? (D015NG )
N a. A Y b. B N c. C N d. D 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 3104: In general, on how many radio channels will an automatic identification system (AIS) operate?
Y a. 3 N b. 5 N c. 7 N d. 9