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.
16: The direction of the surface wind is __________.
N a. directly from high pressure toward low pressure N b. directly from low pressure toward high pressure Y c. from high pressure toward low pressure deflected by the earth's rotation N d. from low pressure toward high pressure deflected by the earth's rotation 43: A buoy with a composite group-flashing light indicates a(n) __________.
N a. anchorage area N b. fish net area Y c. bifurcation N d. dredging area 49: While steering a course of 150°T, you wish to observe a body for a latitude check. What would the azimuth have to be?
Y a. 000°T N b. 090°T N c. 150°T N d. 240°T 103: In Loran-C the high accuracy of atomic time and frequency controls allows each station to operate __________.
N a. at higher frequencies Y b. on schedule, independently N c. at 1,975 kHz N d. in a multiplex phase 169: You want to transit Hell Gate on 23 July 1983. What is the period of time around the AM (ZD +4) slack before ebb when the current will be less than 0.5 knot?
Y a. 0939 to 0957 N b. 0943 to 0953 N c. 0844 to 0852 N d. 0348 to 0356 185: A ship is in longitude 54°00'W on a true course of 270°. The ship's clocks are on the proper time zone. At what longitude should the clocks be changed to maintain the proper zone time?
N a. 45°00'W N b. 52°30'W N c. 60°00'W Y d. 67°30'W 305: IN REGION A of the IALA Buoyage System, when entering from seaward, the port side of a channel would be marked by a __________.
Y a. red can buoy N b. black can buoy N c. red conical buoy N d. black conical buoy 315: Which statement about the time diagram shown DO08NG is TRUE?
N a. You are in west longitude. N b. Your date is ahead of Greenwich. Y c. The meridian angle of the Sun is east. N d. The GHA of the Sun is less than 180°. 402: All of the following can be found on a Pilot Chart EXCEPT information concerning the __________.
N a. percentage of frequency of wave heights N b. percentage of poor visibility conditions N c. sea surface temperatures Y d. amounts of precipitation 431: When a buoy marks a channel bifurcation, the preferred channel is NOT indicated by __________.
N a. the shape of an unlighted buoy N b. the light color of a lighted buoy N c. the color of the topmost band Y d. whether the number is odd or even 460: When using horizontal sextant angles of three objects to fix your position, an indeterminate position will result in which situation?
N a. The objects lie in a straight line. N b. The vessel is inside of a triangle formed by the objects. N c. The vessel is outside of a triangle formed by the objects. Y d. A circle will pass through your position and the three objects. 465: When applying a dip correction to the sighted sextant angle (hs), you always subtract the dip because you are correcting __________.
N a. hs to the visible horizon Y b. hs to the sensible horizon N c. hs to the celestial horizon N d. Ho to the celestial horizon 540: A white buoy with an orange rectangle on it is used to indicate __________.
N a. danger N b. a controlled area N c. an exclusion area Y d. general information 568: The chart of a beach area shows a very steep slope to the underwater beach bottom. Which type of breakers can be expected when trying to land a boat on this beach?
Y a. Surging N b. Converging N c. Spilling N d. Plunging 568: The chart of a beach area shows a very steep slope to the underwater beach bottom. Which type of breakers can be expected when trying to land a boat on this beach?
Y a. Surging N b. Converging N c. Spilling N d. Plunging 601: White and orange buoys, if lighted, show which color light?
Y a. White N b. Orange N c. Red N d. Alternating yellow and white 605: Which is NOT a side of the celestial navigational triangle?
N a. Co-latitude N b. Zenith distance Y c. Altitude N d. Co-declination 814: Steam smoke will occur when __________.
Y a. extremely cold air from shore passes over warmer water N b. warm dry air from shore passes over cooler water N c. cold ocean water evaporates into warm air N d. cool rain passes through a warm air mass 883: When changing from a compass course to a true course you should apply __________.
N a. variation N b. deviation Y c. variation and deviation N d. a correction for the direction of current set 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 1190: Which type of cloud is indicated by the number 2? (D039NG )
N a. Cumulus Y b. Cirrostratus N c. Stratocumulus N d. Altostratus 1208: Which type of cloud is indicated by the number 1? (D039NG )
Y a. Cirrus N b. Altostratus N c. Altocumulus N d. Nimbostratus 1250: Daylight savings time is a form of zone time that adopts the time __________.
Y a. one zone to the east N b. one zone to the west N c. two zones to the east N d. two zones to the west 1263: The compass deviation changes as the vessel changes __________.
N a. geographical position N b. speed Y c. heading N d. longitude 1307: What will be the velocity of the tidal current southwest of Hunts Point, NY, at 0932 EST (ZD +5) on 16 March 1983?
N a. 0.9 knot Y b. 1.5 knots N c. 1.8 knots N d. 2.3 knots 1332: The longitude of the upper vertex of a great circle track is 169°E. What is the longitude of the lower vertex?
N a. 076°E N b. 169°W N c. 101°W Y d. 011°W 1366: Clouds appearing in the following order: cirrus, cirrostratus, altostratus, stratus, and nimbostratus usually indicate the approach of a(n) __________.
Y a. warm front N b. occluded front N c. medium front N d. cold front 1398: Nimbostratus clouds are indicated by what number in illustration D039NG? (D039NG )
Y a. 8 N b. 6 N c. 4 N d. 1 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 1514: The compass error of a magnetic compass that has no deviation is __________.
N a. zero Y b. equal to variation N c. eliminated by adjusting the compass N d. constant at any geographical location 1592: A white buoy marked with an orange rectangle indicates __________.
N a. an anchorage N b. a fish net area N c. mid-channel Y d. general information 1596: You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which of the following is TRUE?
Y a. You should leave the buoy on your port hand. N b. This buoy marks the end of the ICW in that geographic area. N c. The yellow is retroreflective material used to assist in sighting the buoy at night. N d. The yellow square is in error and it should be a yellow triangle. 1614: Hot air can hold __________.
N a. less moisture than cold air Y b. more moisture than cold air N c. the same amount of moisture as cold air N d. moisture independent of air temperature 1696: Two well-developed high pressure areas may be separated by a __________.
N a. hill of low pressure Y b. trough of low pressure N c. valley of low pressure N d. ridge of low pressure 1714: Which statement concerning storm surges on the Great Lakes is FALSE?
Y a. They are common along the deeper areas of the lakes. N b. They cause rapid differences in levels between one end of the lake and the other. N c. The greatest water level difference occurs when the wind is blowing along the longitudinal axis of the lake. N d. If the wind subsides rapidly, a seiche effect will most likely occur. 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 1744: Which condition suggests that your present position lies in the navigable semicircle of a tropical storm?
Y a. A backing wind N b. A veering wind N c. Sustained gale force winds N d. A strong wind that maintains a constant speed and direction 1781: While in port, you can follow the approach of a dangerous cyclonic storm by inspecting __________.
N a. the sky overhead N b. the National Weather Service Observing Handbook No.1, Marine Surface Observations N c. the Coast Pilot or Sailing Directions Y d. a weather map 1795: Which weather element cannot be measured accurately while on board a moving vessel?
N a. Relative humidity Y b. Cloud base height N c. Temperature N d. Atmospheric pressure 1811: To find a magnetic compass course from a true course you must apply __________.
N a. deviation Y b. deviation and variation N c. variation N d. magnetic anomalies (local disturbances) 1831: 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. red conical buoy N b. black can buoy Y c. red can buoy N d. black conical buoy 1925: Above-normal tides near the center of a hurricane may be caused by the __________.
N a. high barometric pressure N b. jet stream Y c. storm surge N d. torrential rains 2007: Information about the direction and velocity of rotary tidal currents is found in the __________.
N a. Mariner's Guide Y b. Tidal Current Tables N c. Nautical Almanac N d. Tide Tables 2043: Stormy weather is usually associated with regions of __________.
N a. changing barometric pressure N b. high barometric pressure N c. steady barometric pressure Y d. low barometric pressure 2246: The speed of an ocean current is dependent on __________.
Y a. the density of the water N b. the air temperature N c. the presence of a high pressure area near it N d. underwater soil conditions 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 2520: When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reference level and __________.
N a. the equivalent reading to the center of the body N b. the equivalent reading from the center of the Earth Y c. for inaccuracies in the instrument N d. the bending of the rays of light from the body 2520: When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reference level and __________.
N a. the equivalent reading to the center of the body N b. the equivalent reading from the center of the Earth Y c. for inaccuracies in the instrument N d. the bending of the rays of light from the body 2584: You must construct a Mercator plotting sheet on a piece of paper measuring 30" by 36". The area includes latitude 30°45'S to 37°15'S and longitude 004°00'E to 005°00'W. Allow a one 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 limitation?
N a. 3.09 inches N b. 3.22 inches N c. 3.41 inches Y d. 3.58 inches 2680: The angle measured eastward from the vernal equinox along the celestial equator often expressed in time units is the __________.
N a. Greenwich sidereal time Y b. right ascension N c. local sidereal time N d. sidereal hour angle 2692: The dividing meridian between zone descriptions -2 and -3 is __________.
N a. 15°30'E N b. 30°00'E Y c. 37°30'E N d. 45°00'E 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. 2726: A daymark used as a special mark is indicated by which letter in the diagram? (D045NG )
N a. A Y b. B N c. C N d. D 2737: A lateral system buoy displaying a quick light __________.
N a. should be passed close aboard on either side Y b. indicates that special caution is required N c. is used at a channel bifurcation or junction N d. is painted with red and white vertical stripes 2762: You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?
Y a. 079° N b. 151° N c. 176° N d. 292° 2944: The height of a wave is the vertical distance __________.
N a. from the still water plane to the crest N b. from the still water plane to the trough Y c. from crest to trough N d. between water levels at one-quarter of the wave's length 2982: You take a bearing of 142° and 259° of two objects. What bearing of a third object will give the best fix? -
Y a. 019° N b. 084° N c. 166° N d. 281° 3071: The level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances is the __________.
Y a. display base information N b. standard display information N c. system electronic nautical chart N d. chart display information 3106: What does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?
N a. 3000 Mhz and 9200 Mhz N b. 2182 Khz and 2187.5 Khz Y c. 156.525 Mhz, 161.975 Mhz and 162.025 Mhz N d. 1575.42 Mhz and 1227.6 Mhz