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.
11: A buoy having red and green horizontal bands would have a light characteristic of __________.
N a. interrupted quick flashing Y b. composite group flashing N c. Morse (A) N d. quick flashing 69: The parallax angle will vary the most with the time of year for __________.
Y a. Venus N b. Jupiter N c. Saturn N d. Polaris 496: Severe tropical cyclones (hurricanes, typhoons) occur in all warm-water oceans except the __________.
N a. Indian Ocean N b. North Pacific Ocean N c. South Pacific Ocean Y d. South Atlantic Ocean 501: Which of the buoys listed below could be used to mark an anchorage?
N a. White buoy numbered "3" N b. White buoy with a green top N c. White buoy with orange bands Y d. Yellow buoy lettered "N" 506: You are to sail from Elizabethport, N.J., on 22 May 1983, with a maximum draft of 28 feet. You will pass over an obstruction in the channel near Sandy Hook that has a depth of 26.5 feet. The steaming time from Elizabethport to the obstruction is 1h 40m. What is the earliest time (ZD + 4) you can sail on the afternoon of 22 May and pass over the obstruction with 2 feet of clearance?
N a. 1454 N b. 1424 N c. 1405 Y d. 1342 592: To measure distance on a Mercator chart between the parallels of LAT 34°30'N and LAT 31°30'N, which 30 mile scale should be used?
N a. 33°00'N to 33°30'N N b. 32°30'N to 33°00'N Y c. 32°45'N to 33°15'N N d. 32°15'N to 32°45'N 665: 17 degrees of latitude is equal to __________.
N a. 68 miles N b. 510 miles Y c. 1020 miles N d. 4080 miles 733: What would give the best radar echo?
N a. The beam of a three masted sailing vessel with all sails set. N b. A 110-foot fishing vessel with a radar reflector in its rigging. N c. A 300-foot tanker, bow on. Y d. A 600-foot freighter, beam on. 767: What describes a flood current?
N a. Horizontal movement of the water toward the land after high tide Y b. Horizontal movement of the water toward the land after low tide N c. Horizontal movement of the water away from the land following high tide N d. Horizontal movement of the water away from the land following low tide 796: Cyclones tend to move __________.
N a. perpendicular to the isobars in their warm sectors Y b. parallel to the isobars in their warm sectors N c. parallel to the line of the cold front N d. perpendicular to the line of the cold front 872: Which agency publishes the Light Lists?
Y a. United States Coast Guard N b. National Ocean Service N c. Oceanographic Office N d. Army Corps of Engineers 932: To find the specific phase characteristic of a lighthouse on a sound of the United States you would use the __________.
N a. American Practical Navigator Y b. Light List N c. Nautical Chart Catalog N d. U.S. Coast Pilot 996: Warm air masses will generally have __________.
N a. turbulence within the mass Y b. stratiform clouds N c. heavy precipitation N d. good visibility 1008: The Light List indicates that a light has a nominal range of 18 miles and is 38 feet high. If the visibility is 6 miles and your height of eye is 15 feet, at which distance will you sight the light?
N a. 18.0 nm N b. 14.8 nm Y c. 11.7 nm N d. 6.0 nm 1019: You are preparing a weather report form, WS Form B-80. The dry bulb thermometer reads 30°F (-1°), and the wet bulb thermometer reads 28°F (-2°C). Using the Ships Code Card, how would you encode the air temperature groups in the report? (D041NG )
N a. 10011, 2003/ N b. 11300, 2124/ N c. 11011, 2124/ Y d. 11011, 2104/ 1034: The expression "the air is saturated" means __________.
Y a. the relative humidity is 100% N b. the vapor pressure is at its minimum for the prevailing temperature N c. precipitation has commenced N d. cloud cover is 100% 1050: The passing of a low pressure system can be determined by periodically checking the __________.
N a. thermometer N b. hygrometer Y c. barometer N d. anemometer 1090: What weather conditions would you expect to find at position A? (D049NG )
Y a. Winds NW-W at 15 knots, partly cloudy, and slight seas N b. winds SW-S at 20 knots, heavy rain, and rough seas N c. Winds calm, light rain, and calm seas N d. Winds NE-E at 20 knots, heavy rain, and rough seas 1093: The Flinders bar on a magnetic compass compensates for the __________.
Y a. induced magnetism in vertical soft iron N b. induced magnetism in horizontal soft iron N c. permanent magnetism in ship's steel N d. vessel's inclination from the vertical 1114: Mechanical lifting of air by the upslope slant of the terrain is called __________.
N a. vertical lifting N b. convective lifting N c. advective lifting Y d. topographic lifting 1139: A star is observed at lower transit. The line of position derived from this sight is __________.
N a. on the prime vertical Y b. a latitude line N c. a longitude line N d. of no special significance 1144: Freezing salt water spray should be anticipated when the air temperature drops below what temperature?
N a. 32°F (0.0°C) Y b. 28°F (-2.2°C) N c. 0°F (-17.8°C) N d. -40°F (-28.9°C) 1277: The velocity and direction of the tidal current at Port Morris, NY, at 1135 DST (ZD +4) on 13 May 1983 will be __________.
Y a. negligible at 220°T N b. 3.1 knots at 045°T N c. 1.2 knots at 220°T N d. 1.0 knot at 045°T 1295: The best estimate of the wind direction at sea level can be obtained from observing the direction of the __________.
N a. cloud movement N b. vessel heading Y c. waves N d. swells 1394: A great circle crosses the equator at 17°W. It will also cross the equator at what other longitude?
N a. 173°W N b. 117°W Y c. 163°E N d. 17°E 1430: The Light List indicates that a light has a nominal range of 14 miles and is 42 feet high (12.8 meters). If the visibility is 6 miles and your height of eye is 20 feet (6.1 meters), at what approximate distance will you sight the light?
N a. 20.1 miles Y b. 10.0 miles N c. 7.6 miles N d. 6.0 miles 1434: What is NOT a characteristic of cardinal marks?
N a. Yellow and black bands N b. White lights Y c. Square or triangular topmarks N d. Directional orientation to a hazard 1475: Which type of cloud is the classic "thunderhead"?
Y a. Cumulonimbus N b. Stratus N c. Cirrus N d. Altostratus 1542: To find a magnetic course from a true course you must apply __________.
N a. magnetic anomalies (local disturbances) N b. deviation Y c. variation N d. deviation and variation 1550: Cirrus clouds are indicated by which number? (D039NG )
Y a. 1 N b. 4 N c. 5 N d. 7 1586: A green buoy has a yellow triangle on it. This is a(n) __________.
N a. information or regulatory buoy that has lateral significance N b. buoy that is off-station and is marked to warn mariners of its wrong position Y c. dual purpose marking used where the ICW and other waterways coincide N d. buoy that was set in error and will be replaced with a red nun buoy 1652: Small, visible mound-like protuberances on the bottom of cumulonimbus clouds, that are potential breeding grounds for waterspouts and tornadoes, are called __________.
N a. thunderheads Y b. mamma N c. rime N d. ice prisms 1654: Which weather element cannot be measured accurately while on board a moving vessel?
Y a. Visibility N b. Temperature N c. Wind direction N d. Atmospheric pressure 1677: The position labeled "E" was plotted because __________. (D051NG )
N a. a dead reckoning position is plotted within a half-hour of each course change Y b. a dead reckoning position is plotted for each speed change N c. the position is a running fix 1125 N d. the vessel's position was fixed at 1145 1709: The Beaufort scale is used to estimate the __________.
N a. wind direction N b. percentage of cloud cover Y c. wind speed N d. barometric pressure 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 1746: Swells that have outrun the storm are produced in the __________.
N a. left front quadrant Y b. right front quadrant N c. rear N d. directly ahead on the storms projected track 1797: A phenomenon where the atmospheric pressure is higher than that of other surrounding regions is called __________.
Y a. a high pressure area N b. a low front or an occluded front N c. the "trade winds" N d. the "doldrums" 1882: The GP of a body for a high altitude sight is determined from the Greenwich hour angle and the __________.
N a. circle of equal altitude N b. zenith distance N c. azimuth angle Y d. declination 1942: In the horizon system of coordinates what is equivalent to the declination of the equator system?
N a. Nadir N b. Azimuth angle Y c. Altitude N d. Zenith distance 1989: In the horizon system of coordinates what is the equivalent to the meridians on the Earth?
N a. Horizon N b. Hour circle Y c. Vertical circles N d. Celestial meridians 2087: The Light List indicates that a light has a nominal range of 20 miles and is 52 feet (16 meters) high. If the visibility is 20 miles and your height of eye is 20 feet (6 meters), at what approximate distance will you sight the light?
N a. 33.0 nm N b. 20.0 nm Y c. 13.5 nm N d. 8.5 nm 2163: The letter C in illustration D006NG represents the __________.
N a. visible horizon N b. geoidal horizon Y c. celestial horizon N d. sensible horizon 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 2258: The primary use of apparent time in marine navigation is to __________.
N a. calculate sunrise or sunset N b. determine zone time N c. enter an almanac Y d. determine the time of meridian transit 2289: The constellation that contains the pointer stars is __________.
N a. Orion Y b. Ursa Major N c. the Southern Cross N d. Pegasus 2358: Altair is found in what constellation?
N a. Hercules N b. Cygnus Y c. Aquila N d. Capricorn 2428: If your vessel were proceeding up river (ascending), the port side of the channel would be marked according to the U. S. Aids to Navigation System on the Western Rivers by __________.
Y a. green can buoys N b. red can buoys N c. green nun buoys N d. red nun buoys 2462: Under ideal viewing conditions, the dimmest star that can be seen with the unaided eye is of what magnitude?
N a. First N b. Third N c. Fourth Y d. Sixth 2470: You are on course 344°T and take a relative bearing of a lighthouse of 090°. What is the true bearing to the lighthouse?
N a. 016° Y b. 074° N c. 254° N d. 270° 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 2529: A bridge over a navigable waterway is being repaired. There is a traveler platform under the bridge's deck that significantly reduces the vertical clearance. If required by the CG district commander, how will this be indicated at night?
N a. Illumination by flood lights Y b. A quick flashing red light at each lower corner N c. A strobe light visible both up and downstream N d. Fixed amber lights under the extreme outer edges of the traveler 2625: Stormy weather is usually associated with regions of __________.
N a. high barometric pressure N b. changing barometric pressure Y c. low barometric pressure N d. steady barometric pressure 2642: Local sidereal time is equal to the __________.
N a. GHA of Aries minus 180° N b. SHA of Aries Y c. LHA of Aries N d. right ascension of Aries plus 180° 2725: A position that is obtained by using two or more intersecting lines of position taken at nearly the same time, is a(n) __________.
N a. estimated position N b. dead-reckoning position N c. running fix Y d. fix 2809: The diurnal variation of pressure is not visible in the middle latitudes in winter because __________.
Y a. it is masked by the pressure changes of moving weather systems N b. the decreased gravitational effect from the sun causes the variation to fade N c. the decreased average temperature is less than the critical temperature N d. the increased Coriolis force disperses the pressure variation 2862: When slanted letters are used to spell the name of a charted object you know the __________.
N a. object is only a hazard to vessels drawing in excess of 20 feet N b. position is approximate or doubtful N c. object is always visible Y d. object may cover and uncover with the tide 3039: As you enter a U.S. channel from seaward the numbers on the buoys __________.
N a. increase with the can buoys being even numbered Y b. increase with the can buoys being odd numbered N c. decrease with the can buoys being even numbered N d. increase in channels going to the north or west, and decrease in channels going to the south or east 3107: Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.
Y a. Port of origin N b. Name of vessel N c. Course and speed over ground N d. Draft of vessel 3127: Which of the following statements is TRUE regarding automatic identification systems (AIS) ?
N a. AIS cannot be used to make passing arrangements because the system is not capable of this type of ship-to-ship communications. N b. AIS cannot be used to make passing arrangements because the ship-to-ship text messaging feature is for emergency use only. Y c. AIS can be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is not relieved from the requirement to sound whistle signals or make arrangements via bridge-to-bridge radiotelephone. N d. AIS can be used to make passing arrangements via ship-to-ship text massaging thus relieving a vessel operator from making such arrangements via bridge-to-bridge radiotelephone or signaling intent to pass via whistle signals.