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.
30: When taking an amplitude, the Sun's center should be observed on the visible horizon when __________.
Y a. in high latitudes N b. the Sun is near or at a solstice N c. the declination is of a different name from the latitude N d. the Sun's declination is at or near 0° 118: What describes an accurate position that is NOT based on any prior position?
N a. Dead-reckoning position N b. Estimated position Y c. Fix N d. Running fix 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 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 142: Which nautical charts are intended for coastwise navigation outside of outlying reefs and shoals?
N a. Approach charts Y b. General charts N c. Sailing charts N d. Coastal charts 154: Which factor has the greatest effect on the amount of gain required to obtain a fathometer reading?
N a. Salinity of water N b. Temperature of water N c. Atmospheric pressure Y d. Type of bottom 218: Lines of position may be __________.
N a. hyperbolas N b. straight lines N c. arcs Y d. All of the above 276: The region of high pressure extending around the Earth at about 35°N latitude is called the __________.
N a. prevailing westerlies Y b. horse latitudes N c. troposphere N d. doldrums 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 357: On 10 August 1983 you will dock near Days Point, Weehawken, on the Hudson River, at 1800 DST (ZD +4). The charted depth alongside the pier is 24 feet (7.3 meters). What will be the depth of water when you dock?
N a. 23.5 feet (7.1 m) Y b. 23.9 feet (7.2 m) N c. 24.9 feet (7.5 m) N d. 26.3 feet (8.0 m) 415: If the Sun's observed altitude is 54°30', what is the zenith distance?
Y a. 35°30' N b. 45°30' N c. 12°30' N d. 14°30' 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 516: A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.
N a. higher than normal swells N b. high winds N c. winds veering from south, through west, to northwest Y d. gradual pressure gradient 516: A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT __________.
N a. higher than normal swells N b. high winds N c. winds veering from south, through west, to northwest Y d. gradual pressure gradient 627: You are on a coastwise voyage bound for Marcus Hook, PA. Your speed is 15 knots. You wish to use the flood tide to facilitate docking starboard side to, heading seaward. To have the most favorable tide throughout, you should time your arrival at the entrance to Delaware Bay __________.
N a. for 1 hour before flood begins N b. for 1 hour after flood begins Y c. for 3 hours after flood begins N d. for 1 hour before ebb begins 632: You must construct a Mercator projection for an area bounded by latitudes 40° - 47°N and longitudes 176°E to 176°W on a paper 28 X 36 inches. Allow a neat line of one inch. What will be the separation between meridians?
N a. 3.190 inches Y b. 3.249 inches N c. 3.529 inches N d. 3.714 inches 649: You are on course 226°T. In order to check the latitude of your vessel, you should observe a celestial body on which bearing?
N a. 226° N b. 270° Y c. 000° N d. 026° 669: It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at least every __________.
N a. hour Y b. 3 hours N c. 6 hours N d. 8 hours 670: A NAVAREA warning carries the following number; 1986/87 (11). Which statement is TRUE?
N a. The warning was issued in 1986, the 87th sequentially numbered warning and broadcast 11 times. Y b. This is warning number 1986 issued in 1987, and it affects sub-region 11. N c. This warning is valid in 1986 and 1987 and is the eleventh two-year warning. N d. The subject of this warning first appeared in 1986; this warning is in 1987 and is the eleventh on this topic. 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 710: What is the FIRST sign of the existence of a well developed tropical cyclone?
N a. Gale force winds from the north Y b. An unusually long ocean swell N c. Steep, short-period waves and light wind N d. Thunderstorms and higher than usual humidity 729: The doldrums are characterized by __________.
N a. steady, light to moderate winds Y b. frequent calms N c. clear skies N d. low humidity 830: The highest frequency of tropical cyclones in the North Atlantic Ocean occurs during __________.
N a. January, February and March N b. April, May and June Y c. August, September and October N d. July, November and December 919: You are plotting a running fix in an area where there is a determinable current. How should this current be treated in determining the position?
N a. The drift should be added to the ship's speed. Y b. The course and speed made good should be determined and used to advance the LOP. N c. The current should be ignored. N d. The set should be applied to the second bearing. 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 955: The line of position determined from a sight with an observed altitude (Ho) of 88°45.0' should be __________.
N a. reduced to the meridian and plotted as a latitude line N b. calculated as a longitude line N c. plotted by using an intercept from an assumed position Y d. plotted as an arc around the GP of the body 995: What is the equivalent of 83°29.6' in time units?
N a. 5h 47m 34.8s N b. 5h 18m 22.7s N c. 5h 01m 42.3s Y d. 5h 33m 58.4s 1006: An air mass is termed "warm" if __________.
N a. it is above 70°F Y b. the ground over which it moves is cooler than the air N c. it originated in a high pressure area N d. it originated in a low pressure area 1074: As the temperature for a given mass of air increases, the __________.
N a. dew point increases N b. dew point decreases N c. relative humidity increases Y d. relative humidity decreases 1122: A barometer showing falling pressure indicates the approach of a __________.
N a. high pressure system Y b. low pressure system N c. high dew point N d. low dew point 1148: The numeral in the center of a wind rose circle on a pilot chart indicates the __________.
N a. total number of observations N b. average wind force on the Beaufort scale N c. average wind force in knots Y d. percentage of calms 1186: As a cold front passes an observer, pressure __________.
N a. drops and winds become variable Y b. rises and winds become gusty N c. drops and winds become gusty N d. rises and winds become variable 1370: Which type of cloud is indicated by the number 8? (D039NG )
N a. Cumulonimbus N b. Altostratus N c. Cirrostratus Y d. Nimbostratus 1458: When navigating coastwise and hurricane warnings are received, you should __________.
N a. call the Coast Guard to request further information N b. call the NWS for further information N c. just begin to react and make plans Y d. have battened down and be heading for the nearest port of refuge 1496: In a microbarograph, the pen should be checked and the inkwell filled __________.
Y a. each time the chart is changed N b. once per month N c. once per week N d. daily 1564: What is a characteristic of cardinal marks?
Y a. Light rhythms indicating directional orientation N b. Vertical stripes N c. Square or triangular topmarks N d. Number-letter combinations for identification 1597: The dense black cumulonimbus clouds surrounding the eye of a hurricane are called __________.
N a. spiral rainbands Y b. cloud walls N c. funnel clouds N d. cyclonic spirals 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 1728: If a hurricane several hundred miles away is moving in your general direction your barometer would __________.
N a. start to rise rapidly Y b. start to fall gradually N c. rise slowly, begin "pumping" and then start a slow, steady fall N d. remain steady 1860: A vessel heading WSW is on a course of __________.
N a. 202.5° N b. 225.0° Y c. 247.5° N d. 271.0° 1950: The error in a sextant altitude caused by refraction is greatest when the celestial body is __________.
N a. high in the sky Y b. near the horizon N c. rising N d. at or near transit 1990: The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, the other system is the __________.
N a. terrestrial system Y b. horizon system N c. astronomical system N d. ecliptic system 2016: Which statement about the Flinders bar of the magnetic compass is CORRECT?
Y a. It compensates for the error caused by the vertical component of the Earth's magnetic field. N b. It compensates for error caused by the heeling of a vessel. N c. It compensates for quadrantal deviation. N d. It is only needed in equatorial waters. 2082: You are holding position above Gallipolis Lock and Dam when you hear two long blasts of the horn from the lock. This indicates that you should __________.
Y a. enter the riverward lock N b. hold position until two more upbound tows have locked through N c. enter the landward lock N d. hold position until the lower gates are closed 2128: 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?
Y a. Three red lights N b. Two red lights N c. One red lights N d. No lights 2268: What condition exists at perigee?
N a. The Earth is farthest from the Sun. N b. The Earth, Sun, and Moon are in line. N c. The Earth, Sun, and Moon are at right angles. Y d. The Moon is closest to the Earth. 2300: When a magnetic compass is not in use for a prolonged period of time it should __________.
Y a. be shielded from direct sunlight N b. be locked into a constant heading N c. have any air bubbles replaced with nitrogen N d. have the compensating magnets removed 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. 2387: You are on a voyage from New Orleans to Boston and navigating off the Florida coast. You will get the greatest benefit from the Gulf Stream if you navigate __________.
N a. about 5 miles east of Cape Canaveral N b. about 15 miles east of Daytona N c. along the 50-fathom curve Y d. about 20 miles east of Jupiter Inlet 2476: At meridian transit, the diagram used by a navigator to illustrate the angles involved is based on the __________.
N a. celestial equator as observed from above the south celestial pole N b. celestial equator as observed from above the north celestial pole Y c. plane of the observer's meridian N d. plane of the Greenwich meridian 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' 2538: The light characteristic of composite group flashing (2 + 1) is used in the Aids to Navigation System on the Western Rivers for lights on __________.
N a. the right descending bank N b. the left descending bank Y c. preferred-channel buoys N d. daymarks with no lateral significance 2618: You must draw a plotting sheet covering latitudes 38°N to 43°N and longitudes 179°E to 178°W. If the distance between each degree of longitude is 5 inches, what is the distance between latitude 38°N and latitude 43°N?
N a. 29.0 inches N b. 29.6 inches N c. 32.1 inches Y d. 32.8 inches 2724: Which condition indicates that your radar needs maintenance?
Y a. Serrated range rings N b. Indirect echoes N c. Multiple echoes N d. Blind sector 2844: The signal from a ramark will show on the PPI as a __________.
N a. coded signal on the same bearing and at a greater range then the transponder N b. circle surrounding the transponder Y c. radial line from the transponder to the center of the PPI N d. dashed circle at the same range as the transponder 2860: On the Mississippi and Ohio Rivers, there is a special type of fog known as steam fog. It is caused by __________.
N a. warm air passing over much colder water Y b. cold air passing over much warmer water N c. a rapid cooling of the ground on a clear night N d. rain coming out of a warm air mass aloft 2887: The letter B in illustration D006NG represents the __________.
N a. visible horizon N b. sensible horizon Y c. geoidal horizon N d. celestial horizon 3008: You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?
N a. 291° N b. 261° N c. 242° Y d. 196° 3018: You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?
N a. 013° N b. 178° Y c. 256° N d. 342° 3091: Which of the following must an ECDIS system be able to perform?
N a. Conversion of "graphical coordinates" to "display coordinates" N b. Transformation of local datum to WGS-'84 datum N c. Calculation of true azimuth and distance between two geographical points Y d. All of the above