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.
20: You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from your position. The hurricane is moving towards 285°T at 25 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?
Y a. 77 miles N b. 82 miles N c. 87 miles N d. 93 miles 56: A strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months, is called __________.
Y a. Tehuantepecer N b. Papagayo N c. Norther N d. Pampero 74: When operated over a muddy bottom, a fathometer may indicate __________.
N a. a shallow depth reading N b. a zero depth reading N c. no depth reading Y d. two depth readings 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 125: The GMT is 0445 and your zone description is +1. Your zone time is __________.
N a. 0445 Y b. 0345 N c. 0545 N d. 1545 296: The wind flow from the horse latitudes to the doldrums is deflected due to __________.
Y a. Coriolis force N b. the mid-latitude, semi-permanent high N c. differing atmospheric pressures N d. the prevailing westerlies 427: On 23 March 1983, at Kingston Point, NY, what is the earliest time after 1700 EST (ZD +5) that the predicted tide will be +2.0 feet?
N a. 1730 N b. 1800 Y c. 1854 N d. 2030 497: What will be the time after 0300 (ZD +4), on 5 March 1983, when the height of the tide at Port of Spain, Trinidad, will be 2.5 feet (.76 meters) ?
N a. 0548 Y b. 0602 N c. 0618 N d. 0634 608: In which voyage, between two points, is the rhumb line distance NOT approximately the same as the great circle distance?
N a. The two points are in low latitudes in the same hemisphere. Y b. The two points are in high latitudes in the same hemisphere. N c. The two points are near the equator, but in different hemispheres. N d. One point is near the equator, one point is in a high latitude, and both are near the 180th meridian. 619: According to Buys Ballot's Law, when an observer in the Southern Hemisphere experiences a northwest wind, the center of the low pressure is located to the __________.
N a. east-northeast Y b. south-southwest N c. east-southeast N d. west-southwest 634: What will cause the ARPA to emit a visual alarm, audible alarm, or both?
N a. An acquired target entering into a guard zone N b. A tracked target lost for one radar scan Y c. A tracked target entering your preset CPA-TCPA limits N d. A target being initially detected within a guard zone 645: The arc of an hour circle between the celestial equator and a point on the celestial sphere, measured northward or southward through 90°, is the __________.
N a. altitude Y b. declination N c. latitude N d. azimuth angle 754: Deviation in a compass is caused by the __________.
N a. vessel's geographic position N b. vessel's heading N c. earth's magnetic field Y d. influence of the magnetic materials of the vessel 821: In addition to monitoring channel 16, all Corps of Engineer locks may use as working channels __________.
N a. 06, 12 and 22A N b. 01A, 05A and 07A Y c. 12, 13 and 14 N d. 14, 24 and 28 824: An "atoll cloud" forming over an island due to heating of the land during the daytime would be which type?
N a. Cirrus Y b. Cumulus N c. Stratus N d. Nimbus 848: It is unlawful to approach within how many yards of a northern right whale?
N a. 200 N b. 300 N c. 400 Y d. 500 862: The U.S. Coast Guard publishes __________.
Y a. Light Lists N b. U.S. Coast Pilots N c. Radio Navigational Aids N d. All of the above 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 1184: Your position X is at LAT 35°S. Which winds are you experiencing? (D009NG )
Y a. Northeasterly N b. Northwesterly N c. Southeasterly N d. Southwesterly 1185: An orange and white buoy with a rectangle on it displays __________.
N a. directions N b. distances N c. locations Y d. All of the above 1198: The Illustration shows the symbols used on radio facsimile weather charts. Which of these symbols indicates a dust storm? (D042NG )
N a. I N b. H Y c. O N d. P 1216: In the Northern Hemisphere, winds veering sharply to the west or northwest with increasing speed are indications that a __________.
Y a. cold front has passed N b. low pressure center is approaching N c. stationary front exists N d. high pressure center has passed 1220: Under the U.S. Aids to Navigation System, a lighted buoy with a spherical topmark marks __________.
N a. the position of underwater cables N b. a hazard to navigation N c. the port side of the channel Y d. safe water 1240: Weather information is available from __________.
N a. commercial radio broadcasts N b. the Coast Guard on scheduled marine information broadcasts N c. VHF-FM continuous marine weather broadcasts provided by the National Weather Service Y d. All of the above 1370: Which type of cloud is indicated by the number 8? (D039NG )
N a. Cumulonimbus N b. Altostratus N c. Cirrostratus Y d. Nimbostratus 1385: What is the length of the lunar day?
Y a. 24h 50m 00s N b. 24h 00m 00s N c. 23h 56m 04s N d. 23h 03m 56s 1398: Nimbostratus clouds are indicated by what number in illustration D039NG? (D039NG )
Y a. 8 N b. 6 N c. 4 N d. 1 1425: Which is an inferior planet?
N a. Mars Y b. Venus N c. Neptune N d. Pluto 1436: Fog forms when the air __________.
N a. is 50% water saturated N b. is 90% water saturated N c. temperature is greater than the dew point temperature Y d. temperature is equal to, or below the dew point temperature 1453: Indications of the master gyrocompass are sent to remote repeaters by the __________.
N a. follow-up system Y b. transmitter N c. phantom element N d. azimuth motor 1479: A microbarograph is a precision instrument that provides a __________.
N a. charted record of atmospheric temperature over time Y b. charted record of atmospheric pressure over time N c. graphic record of combustible gases measured in an atmosphere N d. graphic record of vapor pressure from a flammable/combustible liquid 1521: To avoid error you should read the scale of an aneroid barometer with your eye placed __________.
N a. to the right of the pointer N b. to the left of the pointer Y c. directly in front of the pointer N d. slightly above the meniscus 1644: Which scale is used to estimate wind speed by observing sea conditions __________.
N a. Metric scale N b. Wind scale N c. Coriolis scale Y d. Beaufort scale 1651: From which type of cloud can a tornado or waterspout develop?
N a. Nimbostratus N b. Altostratus Y c. Cumulonimbus N d. Cirrus 1655: Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate?
N a. +2s Y b. -2s N c. -3s N d. +3s 1680: A weather front exists when __________.
N a. air masses of the same temperature meet Y b. air masses of different temperatures meet N c. many clouds create a differential in air density N d. two lows are separated by a ridge of higher pressure 1702: In a cyclone the lowest pressure is found in the __________.
Y a. center N b. outer edge N c. warm front N d. cold front 1752: What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?
N a. More accuracy is needed for celestial observations on board ship than what is tabulated. N b. Sights must be made at even time increments to benefit from the tables. Y c. Only certain stars are included and sights must be limited to those stars. N d. Only first magnitude stars are tabulated. 1772: The GP of a body for a high altitude sight is determined from the declination and the __________.
Y a. Greenwich hour angle N b. azimuth N c. zenith distance N d. right ascension 1941: IN REGION A of the IALA Buoyage System, when entering from seaward, the starboard side of a channel would be marked by a __________.
N a. red can buoy N b. red conical buoy N c. green can buoy Y d. green conical buoy 2114: Vessels regularly navigating rivers above Cairo, Illinois, shall at all times have on board a copy of __________.
N a. Sailing Directions N b. Nautical Almanac for the year N c. U.S. Coast Pilot Y d. U.S. Army Corps of Engineers Regulations (Blue Book) 2224: By convention, the north seeking ends of a compass' magnets are colored __________.
N a. black N b. blue Y c. red N d. white 2240: If you observe a buoy off station you should __________.
N a. fill out and mail CG Form 2692 to the nearest Coast Guard office N b. appear in person at the nearest Coast Guard office N c. notify Coast Guard Headquarters in Washington, DC Y d. immediately contact the nearest Coast Guard office by radiotelephone 2243: Which aid is NOT marked on a chart with a magenta circle?
N a. Radar station N b. Radar transponder beacon Y c. Aero light N d. Radio beacon 2256: The constellation that contains Polaris is __________.
N a. Orion N b. Cassiopeia Y c. Ursa Minor N d. Corona Borealis 2271: What is the definition of height of tide?
N a. The vertical distance from the surface of the water to the ocean floor Y b. The vertical distance from the tidal datum to the level of the water at any time N c. The vertical difference between a datum plane and the ocean bottom N d. The vertical difference between the heights of low and high water 2292: The points on the earth's surface where the magnetic dip is 90° are __________.
N a. along the magnetic equator N b. connected by the isoclinal line N c. the isopors Y d. the magnetic poles 2418: While proceeding downriver, you sight a red triangular-shaped daymark on the left bank. Under the U.S. Aids to Navigation System on the Western Rivers this is a __________.
N a. special purpose signal Y b. passing daymark N c. mark with no lateral significance N d. crossing daymark 2469: A tow that is properly aligned to pass through a narrow opening between two bridge piers is "________________".
N a. on course N b. headed fair N c. holding on Y d. in shape 2469: A tow that is properly aligned to pass through a narrow opening between two bridge piers is "________________".
N a. on course N b. headed fair N c. holding on Y d. in shape 2532: You must construct a Mercator plotting sheet on a piece of paper measuring 28" by 32". The area includes latitude 32°S to 39°S and longitude 005°E to 003°W. Allow a one-half 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 limitations?
Y a. 3.38 inches N b. 3.62 inches N c. 3.79 inches N d. 3.95 inches 2574: What is the equivalent of 2°52' in time units?
N a. 9 min. 23 sec. Y b. 11 min. 28 sec. N c. 11 min. 56 sec. N d. 12 min. 18 sec. 2652: The dividing meridian between zone descriptions -10 and -11 is __________.
N a. 135°30'E N b. 145°00'E N c. 150°00'E Y d. 157°30'E 2711: Information about currents on the Pacific Coast of the U. S. are found in the __________.
Y a. Tidal Current Tables N b. Nautical Almanac N c. Tide Tables N d. Ocean Current Tables 2794: The standard atmospheric pressure in millibars is __________.
N a. 760.0 N b. 938.9 N c. 1000.0 Y d. 1013.2 2849: You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix?
Y a. 000° N b. 066° N c. 112° N d. 271° 2874: What daymark has NO lateral significance?
N a. Red triangle N b. Red triangle with a green horizontal stripe Y c. Green and white diamond N d. Green square 3010: A white buoy with a blue band is __________.
N a. an isolated danger mark N b. a hydrographic data collection buoy Y c. a mooring buoy N d. marking a restricted area 3032: The direction in which a vessel is steered is the course. The path actually followed is the __________.
N a. route N b. track N c. heading Y d. course over the ground 3125: Which of the following statements is TRUE regarding automatic identification systems (AIS)?
N a. AIS is designed to replace ARPA, maneuvering boards, and visual bearings as a means to ascertain the risk of collision. Y b. AIS provides near real-time information regarding another vessel's speed over ground and heading regardless of visibility. N c. AIS will not provide information on another vessel if that vessel is indistinguishable in radar sea clutter. N d. AIS can be relied upon as the sole means to determine course changes due to other AIS equipped traffic.