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.
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 196: The area of strong westerly winds occurring between 40°S and 60°S latitude is called the __________.
N a. polar easterlies N b. prevailing westerlies Y c. roaring forties N d. jet streams 203: In any Loran-C chain, there are three or more stations transmitting pulses which radiate in all directions. One of the stations is the master station, and the others in the chain are the __________.
N a. radio stations Y b. secondary stations N c. monitor stations N d. pulse stations 236: The winds with the greatest effect on the set, drift, and depth of the equatorial currents are the __________.
N a. doldrums N b. horse latitudes Y c. trade winds N d. prevailing westerlies 241: A spherical buoy may be __________.
N a. numbered Y b. lettered N c. green N d. red 250: Weather systems in the middle latitudes generally travel from __________.
Y a. west to east N b. east to west N c. north to south N d. None of the above 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 334: The index error is determined by adjusting the __________.
N a. sextant frame N b. horizon glass N c. index mirror Y d. micrometer drum 358: What will be the set of the rotary current at Nantucket Shoals at 1245 (ZD +5) 14 January 1983?
N a. 015° Y b. 125° N c. 162° N d. 225° 376: According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northeast wind the center of low pressure is located to the __________.
N a. northeast N b. west-southwest N c. northwest Y d. south-southeast 404: An aneroid barometer is an instrument __________.
N a. used to measure the speed of wind Y b. in which the pressure of the air is measured N c. that tells which direction a storm is coming from N d. used to measure the height of waves 426: The wind speed and direction observed from a moving vessel is known as __________.
N a. coordinate wind N b. true wind Y c. apparent wind N d. anemometer wind 491: A special purpose buoy shall be __________.
N a. lighted with a white light N b. striped black and red N c. lighted with a red light Y d. yellow 527: On 6 June 1983, at 1719 EST (ZD +5), what will be the predicted height of tide at Chester, PA?
N a. 0.8 feet( 0.2 meters) Y b. 1.1 feet (0.3 meters) N c. 3.5 feet (1.1 meters) N d. 4.7 feet (1.4 meters) 581: The Captain of the Port has closed to navigation, and buoyed, a section of a harbor. These buoys would be painted __________.
N a. red or green to conform with the other lateral aids N b. red and green horizontally-striped N c. solid yellow Y d. white with orange markings 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. 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 689: What is the index error of sextant C? (D050NG )
Y a. 0'20" on the arc N b. 1'00" on the arc N c. 2'00" on the arc N d. 5'10" on the arc 718: You are to sail from Elizabethport, NJ, 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 charted depth of 27 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 3 feet of clearance?
Y a. 1407 N b. 1331 N c. 1303 N d. 1242 741: What is the light phase characteristic of a lighted isolated-danger mark?
N a. Interrupted quick flashing N b. Very quick flashing N c. Long flashing Y d. Group flashing 756: What is a common unit of measure for atmospheric pressure?
N a. centimeters Y b. Inches N c. Degrees N d. Feet 766: Which position includes the effects of wind and current?
N a. Dead reckoning position N b. Leeway position N c. Set position Y d. Estimated position 780: Apparent wind speed blowing across your vessel while underway can be measured by a(n) __________.
N a. barometer N b. wind vane Y c. anemometer N d. thermometer 809: The compass rose on a nautical chart indicates both variation and __________.
N a. deviation Y b. annual rate of variation change N c. precession N d. compass error 851: You would expect to find channels marked with the IALA-A Buoyage System in __________.
N a. the Philippines Y b. Australia N c. Republic of Korea N d. Chile 864: Uniform, grayish-white cloud sheets that cover large portions of the sky, and are responsible for a large percentage of the precipitation in the temperate latitudes, are called __________.
Y a. altostratus N b. altocumulus N c. cirrostratus N d. cirrocumulus 878: At 0600 ZT on 31 January, your position is LAT 00°49'S, LONG 84°27'E. You are preparing a weather report form, WS Form B-80. How should you encode the first three groups after the call sign if you estimate the wind? (D041NG )
N a. 30243, 90008, 30848 N b. 31003, 99049, 38427 Y c. 31003, 99008, 30844 N d. 31063, 99049, 58427 884: Which cloud type is normally associated with thunderstorms?
N a. Cirrus N b. Stratus N c. Cumulus Y d. Cumulonimbus 969: The population of northern right whales, an endangered species, numbers approximately __________.
Y a. 300 N b. 5000 N c. 100,000 N d. 1,000,000 996: Warm air masses will generally have __________.
N a. turbulence within the mass Y b. stratiform clouds N c. heavy precipitation N d. good visibility 1076: Which is TRUE concerning the speed of fronts?
Y a. Cold fronts move faster than warm fronts. N b. Cold fronts move slower than warm fronts. N c. Cold fronts and warm fronts move with equal speed. N d. Cold fronts move slower at the northern end and faster at the southern end. 1089: You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the course to steer at 13 knots to intercept vessel A?
Y a. 262° N b. 269° N c. 276° N d. 281° 1095: The celestial coordinate of a star that is relatively constant in value is the __________.
N a. Greenwich hour angle N b. local hour angle Y c. sidereal hour angle N d. meridian angle 1211: Red sectors of navigation lights warn mariners of __________.
N a. floating debris N b. heavily trafficked areas N c. recently sunken vessels Y d. shoals or nearby land 1322: What will be the velocity of the tidal current at Grant's Tomb, 123rd Street, NY, NY, at 1412 EST (ZD +5) on 22 March 1983?
N a. 0.5 knot N b. 0.8 knot Y c. 1.1 knots N d. 1.3 knots 1344: Which of the buoy symbols shown indicates a safe water mark? (D032NG )
Y a. D N b. C N c. B N d. A 1345: A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbol in illustration D015NG?
N a. D N b. C Y c. B N d. A 1372: You are enroute to Jacksonville, FL, from San Juan, P.R. There is a fresh N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.
N a. cirrus clouds N b. long swells N c. smoother seas and warmer water Y d. steeper waves, closer together 1395: The lunar day is __________.
Y a. longer than a solar day N b. shorter than a solar day N c. the same length as the solar day N d. longer than a solar day during the summer months and shorter in winter months 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 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 1603: 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 Y b. fix N c. running fix N d. dead-reckoning position 1660: Which of the following is TRUE of advection fog?
N a. It commonly occurs on coastal waters during cold seasons. N b. It moves in a bank or dense cloud. N c. It is caused by warmer air moving to a cooler location. Y d. All of the above 1678: Which information is NOT provided in broadcasts by the National Institute of Standards and Technology?
N a. Storm Warnings N b. Time Announcements N c. GPS Information Y d. NAVAREA Warnings 1694: In the Southern Hemisphere the wind circulation in a high pressure system rotates __________.
N a. clockwise and inward N b. clockwise and outward Y c. counterclockwise and outward N d. counterclockwise and inward 1723: The intensity of a hurricane as it reaches higher latitudes and cooler waters __________.
N a. Increases N b. remains the same Y c. decreases N d. None of the above 1738: In the Northern Hemisphere, the right half of the storm is known as the dangerous semicircle because __________.
N a. The wind speed is greater here since the wind is traveling in the same general direction as the storm's track N b. the direction of the wind and seas might carry a vessel into the path of the storm N c. the seas are higher because of greater wind speed Y d. All of the above 1755: Which weather system produces strong cold winds called "Northers" during the winter months in the Gulf of Mexico?
N a. An anticyclone N b. A high pressure system N c. A cyclone Y d. Both A and B 1871: A lighted buoy to be left to starboard, when entering a U.S. port from seaward, shall have a __________.
N a. green light N b. white light Y c. red light N d. light characteristic of Morse (A) 2058: Illustration D038NG represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D in the illustration? (D038NG )
N a. One red light N b. Two green lights Y c. Three green lights N d. No lights 2126: Your chart indicates that there is an isolated rock and names the rock using vertical letters. This indicates the __________.
N a. rock is visible at low water springs only N b. rock is a hazard to deep draft vessels only Y c. rock is dry at high water N d. exact position of the rock is doubtful 2250: The most important information to be obtained from a barometer is the __________.
N a. difference between the reading of the two pointers, which shows wind direction N b. last two figures of the reading of the pointer, such as .87, .76, or .92 Y c. present reading of the pressure, combined with the changes in pressure observed in the recent past N d. weather indications printed on the dial (such as "cold, wet, etc.") under the pointer 2364: The immediate surroundings of what constellation contain the most first magnitude stars?
N a. Libra N b. Cassiopeia N c. Pegasus Y d. Orion 2444: What is the equivalent of 0°48' in time units?
N a. 2 min. 12 sec. N b. 2 min. 42 sec. N c. 3 min. 02 sec. Y d. 3 min. 12 sec. 2695: 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. N b. The current should be ignored. Y c. The course and speed made good should be determined and used to advance the LOP. N d. The set should be applied to the second bearing. 2829: A spar buoy is indicated by which letter in illustration D044NG?
N a. A Y b. B N c. C N d. D 3076: An ECDIS is required to display which information?
N a. Radar targets N b. ARPA vectors Y c. Hydrographic data N d. All of the above 3083: Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?
N a. Five Y b. Four N c. Three N d. Two 3104: In general, on how many radio channels will an automatic identification system (AIS) operate?
Y a. 3 N b. 5 N c. 7 N d. 9 3128: Which of the following statements is TRUE regarding automatic identification systems (AIS)?
N a. AIS may be used to make passing arrangements via ship-to-ship text messaging thus relieving a vessel operator from sounding whistle signals or making contact via radiotelephone. Y b. AIS may be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is still required to sound whistle signals unless the arrangement is made via radiotelephone. N c. AIS cannot be used to make passing arrangements because the system does not have the ability to communicate from ship-to-ship in this manner. N d. AIS cannot be used to make passing arrangements because the use of the ship-to-ship text messaging feature in this way is prohibited.