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.
113: The type of transmission used in Loran-C is a __________.
N a. single pulse N b. wide pulse Y c. multipulse N d. narrow pulse 122: The subregions of the United States Gulf and East Coasts are numbered 11, 12 and 13 within the chart numbering system. Which chart number indicates a chart for either the Gulf or East Coast?
Y a. 11250 N b. 18411 N c. 21228 N d. 17136 302: Which symbol represents a 20-fathom curve?
Y a. -..-..-..-..- N b. - - - - - - - - N c. - - . - - . - - . - - . N d. - - - - - - - - 333: Loran-C stations transmit groups of pulses at specific times. The time interval between transmissions from the master station is the __________.
N a. coding delay Y b. group repetition interval N c. pulse interval N d. phase code 386: Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. The true direction and speed of the wind are __________.
N a. 45°T, 21.0 knots Y b. 51°T, 24.0 knots N c. 58°T, 21.2 knots N d. 64°T, 26.0 knots 397: The mean tide level at Peaks Island, ME, is __________.
N a. 1.8 feet (0.5 meters) N b. 2.5 feet (0.8 meters) N c. 3.2 feet (1.0 meters) Y d. 4.5 feet (1.4 meters) 410: The height of the tide at low water is 0.0 feet. The range is 9.0 feet. The duration is 06h 00m. The height of the tide 02h 12m before high water will be __________.
N a. 8.3 feet Y b. 6.3 feet N c. 4.7 feet N d. 2.7 feet 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 550: The description "Racon" beside an illustration on a chart would mean a __________.
Y a. radar transponder beacon N b. radar conspicuous beacon N c. radar calibration beacon N d. circular radio beacon 579: Low pressure disturbances, which travel along the intertropical convergence zone, are called __________.
N a. permanent waves N b. tidal waves Y c. tropical waves N d. tropical storms 603: What is the approximate wave length of an X Band Radar operating on a frequency of approximately 9500 MHz?
Y a. 3 cm N b. 10 cm N c. 30 cm N d. 100 cm 617: You are bound for the Chelsea docks in the Hudson River. The Captain wants to arrive at the docks at the first slack water on 28 July 1983. You are keeping daylight saving time. What time should you be at the docks?
Y a. 0215 N b. 0530 N c. 0811 N d. 0911 682: Which table is NOT found in the U.S. Coast Pilots?
N a. Climatological table Y b. Luminous range table N c. Meteorological table N d. Coastwise distance table 692: Which publication should you check for complete information on Puget Sound weather conditions?
N a. Sailing Directions N b. Light List Y c. Coast Pilot N d. Chart of the area 706: A steep barometric gradient indicates __________.
N a. calms N b. light winds Y c. strong winds N d. precipitation 747: The movement of water away from the shore or downstream is called a(n) __________.
N a. reversing current Y b. ebb current N c. flood current N d. slack current 760: As a vessel changes course to starboard, the compass card in a magnetic compass __________.
N a. first turns to starboard then counterclockwise to port N b. also turns to starboard Y c. remains aligned with compass north N d. turns counterclockwise to port 760: As a vessel changes course to starboard, the compass card in a magnetic compass __________.
N a. first turns to starboard then counterclockwise to port N b. also turns to starboard Y c. remains aligned with compass north N d. turns counterclockwise to port 817: Which current would you encounter on a direct passage from London, England, to Cape Town, South Africa?
N a. Falkland Current N b. Brazil Current N c. Norway Current Y d. Benguela Current 841: Under the IALA-A Buoyage system, a buoy marking the port hand of the channel when approaching from seaward may NOT have a __________.
N a. red light Y b. conical shape N c. group-flashing light N d. square topmark 906: In the Northern Hemisphere, an area of counterclockwise wind circulation surrounded by higher pressure is a __________.
Y a. low N b. high N c. warm front N d. cold front 914: If the sky was clear, with the exception of a few cumulus clouds, it would indicate __________.
N a. rain N b. hurricane weather Y c. fair weather N d. fog setting in 1007: When a current flows in the opposite direction to the waves, the wave __________.
N a. length is increased Y b. height is increased N c. velocity increases N d. length is unchanged 1010: What is a characteristic of a rhumb line?
N a. It is the shortest distance between two points on the Earth. N b. It plots as a straight line on a Lambert conformal chart. Y c. It cuts each meridian at the same angle. N d. The course angle constantly changes to form the loxodromic curve. 1042: What is the approximate geographic range of Shinnecock Light, NY, if your height of eye is 24 feet (7.3 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 8.7 nm N b. 9.9 nm N c. 14.4 nm Y d. 15.9 nm 1081: On a voyage along the coast of France, you sight a buoy with the top marks as shown. You are required to steer __________. (D026NG )
N a. west of the buoy N b. east of the buoy Y c. south of the buoy N d. north of the buoy 1096: With the passage of an occluded front the temperature __________.
N a. rises rapidly N b. remains about the same N c. drops rapidly Y d. depends on whether warm type or cold type occlusion 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 1123: What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?
N a. Quadrantal spheres Y b. Heeling magnets N c. Athwartships magnets N d. Fore-and-aft magnets 1234: Which information does the outer ring of a compass rose on a nautical chart provide?
N a. Variation Y b. True directions N c. Magnetic directions N d. Annual rate of variation change 1312: Which factor(s) is/are used to develop the charted information of a lighthouse?
Y a. Height and intensity of the light N b. Height of the light and the observer N c. Height of the observer and the intensity of the light N d. Height of the light only 1338: Which type of cloud is indicated by the number 6? (D039NG )
N a. Altocumulus Y b. Stratocumulus N c. Altostratus N d. Cirrus 1386: The FIRST indications a mariner will have of the approach of a warm front will be __________.
N a. large cumulonimbus clouds building up N b. low dark clouds with intermittent rain N c. fog caused by the warm air passing over the cooler water Y d. high clouds gradually followed by lower thicker clouds 1447: What will be the velocity of the tidal current 6 miles south of Shoal Point, NY, at 1850 DST (ZD +4) on 9 July 1983?
N a. 0.2 knot ebb Y b. 0.2 knot flood N c. 1.2 knot ebb N d. 1.4 knot flood 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. 1513: Scales on aneroid barometers are usually graduated in inches of mercury in the general range of __________.
N a. 26 to 29 inches Y b. 28 to 31 inches N c. 30 to 33 inches N d. 32 to 35 inches 1552: Which sextant in illustration D043NG reads 30°42.5'? (D043NG )
N a. A Y b. B N c. C N d. D 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 1720: In the Southern Hemisphere winds in a low pressure system rotate in a __________.
Y a. clockwise direction N b. northeasterly direction N c. northerly direction N d. counterclockwise direction 1756: Where would you expect to find climatological and meteorological tables for the Gulf Coast area?
N a. In the publication entitled Radio Aids to Navigation Y b. In the back of Coast Pilot #5 N c. In any Coast Pilot volume N d. Only at the National Weather Service office 1760: A Doppler log in the bottom return mode indicates the __________.
N a. velocity of the current N b. bottom characteristics N c. depth of the water Y d. speed over the ground 1838: The Light List shows a lighted aid to navigation on the left bank. This means that the light can be seen on the starboard side of a vessel __________.
Y a. ascending the river N b. descending the river N c. crossing the river N d. proceeding towards sea 1920: Because the actual center of some planets may differ from the observed center, the navigator applies a correction known as the __________.
Y a. phase correction N b. refraction correction N c. semidiameter correction N d. augmentation correction 1992: The parallel of latitude at 23°27'S is the __________.
N a. Tropic of Cancer Y b. Tropic of Capricorn N c. Arctic Circle N d. ecliptic 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 2171: 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 B if the lock walls and piers are not awash?
N a. One amber light N b. One red light N c. Two red lights Y d. Three red lights 2180: Relative humidity is defined as __________.
N a. the maximum vapor content the air is capable of holding N b. the minimum vapor content the air is capable of holding Y c. the ratio of the actual vapor content at the current temperature to the air's vapor holding capability N d. the relation of the moisture content of the air to barometric pressure 2180: Relative humidity is defined as __________.
N a. the maximum vapor content the air is capable of holding N b. the minimum vapor content the air is capable of holding Y c. the ratio of the actual vapor content at the current temperature to the air's vapor holding capability N d. the relation of the moisture content of the air to barometric pressure 2226: Upper limb observations of the Moon are used more frequently than those of the Sun because of the location of the Moon in the sky and the __________.
N a. lesser distance between the Earth and the Moon Y b. phase of the Moon N c. rapid change in declination of the Moon N d. effects of augmentation and horizontal parallax 2452: The permanent magnetism of a vessel may change in strength due to __________.
N a. the nature of the cargo being carried N b. changes in heading Y c. major structural repair N d. All of the above 2518: In low latitudes, the full Moon will always rise at about __________.
N a. sunrise N b. 1200 LMT Y c. sunset N d. 2400 LMT 2627: Stormy weather is usually associated with regions of __________.
N a. high barometric pressure Y b. low barometric pressure N c. steady barometric pressure N d. changing barometric pressure 2659: IN REGION A of the IALA Buoyage System, when entering from seaward, the port side of a channel would be marked by a __________.
N a. black can buoy N b. red conical buoy N c. black conical buoy Y d. red can buoy 2819: The time interval between successive wave crests is called __________.
Y a. wave period N b. wavelength N c. frequency N d. significant wave height 2998: While navigating in fog off a coastline of steep cliffs, you hear the echo of the ships fog horn 3 1/2 seconds after the signal was sounded. What is the distance to the shore?
Y a. 640 yards N b. 480 yards N c. 315 yards N d. 143 yards 3028: The channel under a bridge is marked with aids from the lateral system. The centerline of the channel is marked on the bridge with __________.
N a. a yellow triangle N b. three white lights N c. a black-and-white diamond Y d. a red-and-white octagon 3029: On 13 November 1981 you observe a back sight of the upper limb of the Moon. The sextant altitude (hs) is 110°31.2'. The height of eye is 46 feet and the index error is 2.0' on the arc. The horizontal parallax is 61.3'. What is the observed altitude (Ho)?
N a. 70°11.8' Y b. 69°41.8' N c. 69°25.6' N d. 69°18.4' 3037: The letter H in illustration D006NG represents the __________.
Y a. visible horizon N b. celestial horizon N c. geoidal horizon N d. refractive horizon 3103: In general, on how many radio channels will an automatic identification system (AIS) operate?
N a. 1 Y b. 3 N c. 4 N d. 12 3112: With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?
N a. Vessel's draft N b. Air Draft Y c. Navigational status N d. Dimensions of vessel