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.
81: A buoy with a composite group-flashing light indicates a(n) __________.
Y a. bifurcation N b. fish net area N c. anchorage area N d. dredging area 81: A buoy with a composite group-flashing light indicates a(n) __________.
Y a. bifurcation N b. fish net area N c. anchorage area N d. dredging area 84: When using an echo sounder in deep water, it is NOT unusual to __________.
Y a. receive a strong return at about 200 fathoms (366 meters) during the day, and one nearer the surface at night N b. receive a first return near the surface during the day, and a strong return at about 200 fathoms (366 meters) at night N c. receive false echoes at a constant depth day and night N d. have to recalibrate every couple of days due to inaccurate readings 117: Mean high water is the average height of __________.
N a. the higher high waters N b. the lower high waters N c. the lower of the two daily tides Y d. all high waters 123: If the radio signal ground wave extends out for less distance than the minimum skywave distance, there is an area in which no signal is received. This is called the __________.
Y a. skip zone N b. blackout zone N c. diffraction zone N d. shadow zone 177: How many high waters usually occur each day on the East Coast of the United States?
N a. One Y b. Two N c. Three N d. Four 188: Off Barnegat, NJ, with the wind coming out of the east, the wind-driven current will be flowing approximately __________.
N a. 286° Y b. 254° N c. 106° N d. 016° 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 304: In order to remove index error from a sextant, you should adjust the __________.
N a. index mirror to make it parallel to the horizon glass with the index set at zero Y b. horizon glass to make it parallel to the index mirror with the index set at zero N c. horizon glass to make it parallel to the sextant frame N d. telescope to make it perpendicular to the sextant frame 307: The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.
N a. 60°W N b. 75°W Y c. 90°W N d. 105°W 319: The Illustration shows the symbols used by radio facsimile weather charts. The symbol indicated at letter "F" represents a __________. (D042NG )
N a. maritime air mass Y b. weather boundary N c. convergence zone N d. squall line 346: If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position, what winds can you expect in the Northern Hemisphere?
N a. East to northeast N b. East to southeast Y c. North to northwest N d. South to southeast 401: You are steaming in a westerly direction along the Gulf Coast. You see ahead of you a lighted buoy showing a red isophase light. Which action should you take?
Y a. Alter course to port and leave the buoy to starboard. N b. Alter course to starboard and leave the buoy to port. N c. Alter course and leave the buoy near by on either side. N d. Alter course and pass the buoy well-off on either side. 430: The southeast trade winds actually blow toward the __________.
N a. southeast N b. south N c. east Y d. northwest 439: If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you, what winds can you expect in the Southern Hemisphere?
Y a. South-southwesterly N b. North-northwesterly N c. South-southeasterly N d. North-northeasterly 456: Which condition exists in the eye of a hurricane?
N a. Wind rapidly changing direction N b. A temperature much lower than that outside the eye N c. Towering cumulonimbus clouds Y d. An extremely low barometric pressure 522: All straight lines represent great circle tracks on a chart based on a(n) __________.
N a. Mercator projection N b. polyconic projection N c. orthographic projection Y d. gnomonic projection 538: Which symbol shown represents a stationary front? (D018NG )
Y a. A N b. B N c. C N d. D 679: A tropical wave is usually preceded by __________.
N a. tropical storms Y b. good weather N c. heavy rain and cloudiness N d. heavy seas 681: You sight a spar buoy with the top mark shown in the illustration. You must __________. (D027NG )
N a. pass to the east of the buoy N b. pass to the south of the buoy N c. pass to the north of the buoy Y d. keep well clear of the buoy and pass on either side 727: What is an ebb current?
N a. A current at minimum flow N b. A current coming in Y c. A current going out N d. A current at maximum flow 750: On a working copy of a weather map, a cold front is represented by what color line?
N a. Red Y b. Blue N c. Alternating red and blue N d. Purple 877: Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the __________.
N a. Alaska Current N b. Subarctic Current N c. Kuroshio Current Y d. Oyashio Current 921: Under the IALA-B Buoyage System, a conical buoy will be __________.
Y a. red in color N b. numbered with an odd number N c. left to port when entering from seaward N d. All of the above 949: 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 Y b. red can buoy N c. black conical buoy N d. red conical buoy 994: Which list of clouds is in sequence, from highest to lowest in the sky?
N a. Altostratus, cirrostratus, stratus Y b. Cirrostratus, altostratus, stratus N c. Stratus, cirrostratus, altostratus N d. Altostratus, stratus, cirrostratus 1014: Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at __________.
N a. a specific barometric pressure Y b. a specific temperature N c. a specific wind speed N d. any time 1021: You are underway in the North Sea on course 142°T when you sight a buoy bearing 105°T. The buoy's white light has a characteristic of continuous very-quick flashing. To ensure that your vessel remains in the best navigable water you would __________.
N a. continue on course and ensure that the bearings change to the left N b. pass between the buoy and another buoy showing a fixed white light N c. alter course to port and pass the buoy close aboard to either side Y d. alter course to port and pass north of the buoy 1057: One of the causes of ocean currents is density differences in the water. This is true because __________.
N a. in an area of high density the water's surface is lower than in an area of low density Y b. surface water flows from an area of high density to one of low density N c. the lesser the density gradient the freer the water is to move N d. it is the density differences that cause the currents to stay in the troughs 1138: On approaching the English Channel on course 080°T, you note the symbol YBY near a charted buoy. You must pass __________.
N a. northward of the buoy N b. southward of the buoy N c. eastward of the buoy Y d. westward of the buoy 1207: What will be the velocity of the tidal current at New London Harbor Entrance, CT, at 1615 EST (ZD +5) on 26 December 1983?
Y a. 0.2 knot N b. 0.4 knot N c. 0.7 knot N d. 0.9 knot 1247: What is the predicted velocity of the tidal current 2 miles west of Southwest Ledge for 2330 DST (ZD +4) on 7 September 1983?
Y a. 1.3 knots N b. 1.6 knots N c. 1.9 knots N d. 2.2 knots 1248: On 6 July 1983, at 1520 DST (ZD +4) what will be the predicted height of tide at Newburgh, NY?
N a. 2.1 feet N b. 1.7 feet N c. 1.2 feet Y d. 0.6 foot 1278: The difference between the heights of low and high tide is the __________.
N a. depth N b. distance Y c. range N d. period 1328: What will be the velocity of the tidal current in Bolivar Roads, Texas, at a point 0.5 mile north of Ft. Point, on 23 November 1983 at 0330 CST (ZD +6)?
Y a. Slack water N b. 0.8 kt N c. 1.2 kts N d. 3.4 kts 1370: Which type of cloud is indicated by the number 8? (D039NG )
N a. Cumulonimbus N b. Altostratus N c. Cirrostratus Y d. Nimbostratus 1390: The fog most commonly encountered at sea is called __________.
N a. conduction fog N b. radiation fog N c. frontal fog Y d. advection fog 1399: You are bound for Baltimore via Cape Henry on a 15 knot ship. If the flood at Chesapeake Bay entrance begins at 1800 EST (ZD +5), at what time would you depart from the Chesapeake Bay entrance to have the most favorable current?
N a. 1700 hours N b. 1800 hours N c. 1900 hours Y d. 2030 hours 1410: A white buoy marked with an orange rectangle indicates __________.
N a. a fish net area Y b. general information N c. an anchorage N d. mid-channel 1457: What is the period of time from around 1008 DST (ZD +4) at Canapitsit Channel, MA, on 7 August 1983, in which the current does not exceed 0.4 knot?
N a. 0945 to 1031 N b. 0950 to 1026 Y c. 0955 to 1021 N d. 1000 to 1024 1469: The charted channel depth at Eastport, ME, is 28 feet. You are drawing 31.5 feet and wish 2 feet clearance under the keel. What is the earliest time after 1700 (ZD +4) on 6 September 1983 that you can enter the channel?
N a. 1825 N b. 1903 Y c. 1915 N d. 2003 1504: The time meridian used when computing the height of tide for Pensacola Bay, FL, is __________.
N a. 75°00'W N b. 82°30'W Y c. 90°00'W N d. 97°30'W 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 1613: Where would you find information concerning the duration of slack water?
N a. Tide Tables Y b. Tidal Current Tables N c. American Practical Navigator N d. Sailing Directions 1636: A type of precipitation that occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level is known as __________.
N a. sleet Y b. hail N c. freezing rain N d. rime 1649: If you count 20 seconds between seeing lightning and hearing the thunder, how far is the storm away from you?
N a. 2 miles Y b. 4 miles N c. 6 miles N d. 8 miles 1686: Which of the following statements concerning frontal movements is TRUE?
N a. The temperature rises after a cold front passes. N b. The barometric pressure rises when a warm front passes. Y c. A cold front generally passes faster than a warm front. N d. A warm front usually has more violent weather associated with it than a cold front. 1713: When a tornado moves over the water from land it is called a __________.
N a. tornado Y b. waterspout N c. hurricane N d. cyclone 1780: While in port, you can follow the approach of a dangerous cyclonic storm by inspecting __________.
N a. the Coast Pilot or Sailing Directions N b. the National Weather Service Observing Handbook No.1, Marine Surface Observations Y c. a newspaper N d. the sky overhead 1844: What is the relative bearing of an object sighted dead ahead?
N a. 180° N b. 090° N c. 015° Y d. 000° 1908: What is the brightest navigational planet?
N a. Saturn N b. Jupiter N c. Mars Y d. Venus 2112: Vessels regularly navigating rivers above Cairo, Illinois, shall at all times have on board a copy of __________.
N a. U.S. Coast Pilot Y b. U.S. Army Corps of Engineers Regulations (Blue Book) N c. Nautical Almanac for the year N d. Light List Vol. V 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 2255: The height of tide is the __________.
N a. depth of water at a specific time due to tidal effect N b. difference between the depth of the water at high tide and the depth of the water at low tide N c. difference between the depth of the water and the high water tidal level Y d. difference between the depth of the water and the area's tidal datum 2324: Deneb is found in what constellation?
Y a. Cygnus N b. Pegasus N c. Ursa Major N d. Andromeda 2356: As observed from the Earth, the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as __________.
Y a. elongation N b. conjunction N c. opposition N d. quadrature 2505: At the approaches to Savannah, GA, with the wind coming out of the west, the wind-driven current will be flowing approximately __________.
N a. 280° N b. 260° N c. 100° Y d. 080° 2841: You are required to enter a lock on your voyage. Information on the lock regulations, signals, and radio communications can be found in __________.
Y a. Coast Pilot N b. Corps of Engineer Information Bulletin N c. Bowditch N d. the publication "Key to the Locks" 2938: You take a bearing of 176° of a lighthouse. What bearing of another object would give the best fix?
N a. 000° N b. 021° N c. 189° Y d. 272° 3117: With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
Y a. Time stamp N b. IMO number N c. Type of vessel N d. Vessel's maximum displacement