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.
45: The navigator aboard a ship at approximately 165°E longitude observes the Sun at ZT 14-25-04 on 21 September. What is the GMT and Greenwich date of the observation?
Y a. 03-25-04, 21 September N b. 02-25-04, 21 September N c. 01-25-04, 21 September N d. 01-25-04, 20 September 72: The datum from which the predicted heights of tides are reckoned in the tide tables is __________.
N a. mean low water Y b. the same as that used for the charts of the locality N c. the highest possible level N d. given in table three of the tide tables 92: When utilizing a Pacific Coast chart, the reference plane of soundings is __________.
N a. mean low water springs N b. mean low water Y c. mean lower low water N d. lowest normal low water 149: You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane is moving towards 275°T at 25 knots. What course should you steer at 13 knots to have the maximum CPA?
N a. 339° Y b. 333° N c. 326° N d. 320° 197: Chart legends printed in capital letters show that the associated landmark is __________.
Y a. conspicuous N b. inconspicuous N c. a government facility or station N d. a radio transmitter 253: Loran-C is which type of system?
N a. Reflected electron N b. Electrical radiation N c. Quarterpoint electrical navigation Y d. Hyperbolic radio navigation 267: You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown. The range continues to open. What action should you take? (D047NG )
N a. Alter course to the right to 309°T or more to bring the range in line. Y b. Alter course to the left until the range closes, then steer to the left of 306°T. N c. Alter course to the left to close the range, then alter course to 309°T. N d. Maintain course as it is normal for the range to open as you get close. 274: Which of the four adjustable errors in the sextant causes side error?
Y a. Horizon glass not being perpendicular to the frame N b. Index mirror not being perpendicular to the frame N c. Telescope not being parallel to the frame N d. Elliptical centering error 361: As your vessel is heading southward along the east coast of the United States, you encounter a buoy showing a red flashing light. How should you pass this buoy?
N a. Pass it about 50 yards off on either side. Y b. Leave it to your starboard. N c. Leave it to your port. N d. Pass it well clear on either side. 447: On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT?
Y a. 5.3 feet (1.6 m) N b. 5.6 feet (1.7 m) N c. 6.2 feet (1.9 m) N d. 6.8 feet (2.7 m) 488: A great circle crosses the equator at 93°W. It will also cross the equator at what other longitude?
N a. 13°E Y b. 87°E N c. 177°E N d. 177°W 503: You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.
N a. a dashed line running from the center of the scope to the light N b. an audible signal when the sweep crosses the light N c. a circle appearing on the scope surrounding the light Y d. a coded signal appearing on the same bearing at a greater range than the light 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 513: You are radar scanning for a buoy fitted with a racon. Which radar screen represents the presentation you should expect on the PPI? (D017NG )
N a. A Y b. B N c. C N d. D 673: You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later, the contact is 8 miles directly astern of you. What is the estimated speed of the contact?
N a. Dead in the water N b. 1 knot N c. 10 knots Y d. 15 knots 696: The diurnal pressure variation is most noticeable in the __________.
N a. polar regions N b. horse latitudes N c. roaring forties Y d. doldrums 722: Which publication would describe the explosive anchorages in the ports on the east coast of the United States?
N a. Sailing Directions N b. Pilot Rules for Inland Waters Y c. Coast Pilot N d. Notice to Mariners 772: You are hove to in a hurricane on a heading of 328°T. The wind is from 030° true at 119 knots. How should this be encoded on the weather report form under Nddff. (D041NG )
N a. 80312 N b. 83011 N c. 83099 Y d. 80399 774: Variation is not constant; it is different with every change in __________.
N a. speed N b. vessel heading Y c. geographical location N d. cargo 797: Which statement is TRUE concerning the current of the Gulf Stream?
N a. It reaches its daily maximum speed a few hours before the transit of the Moon. N b. It is slower at the time of neap tides than at spring tides. N c. When the Moon is at its maximum declination the stream is narrower than when the Moon is on the equator. Y d. Variations in the trade winds affect the current. 916: Stormy weather is usually associated with regions of __________.
Y a. low barometric pressure N b. high barometric pressure N c. steady barometric pressure N d. changing barometric pressure 941: While preparing to enter a Brazilian port, you see ahead a red and green horizontally-striped buoy. The upper band is red. What action should you take?
N a. Alter course to leave the buoy to port. Y b. Alter course to leave the buoy to starboard. N c. Pass the buoy close aboard on either side. N d. Pass the buoy well clear on either side. 976: The atmosphere in the vicinity of a high pressure area is called a(n) __________.
Y a. anticyclone N b. cold front N c. occluded front N d. cyclone 986: A warm air mass is characterized by __________.
Y a. stability N b. instability N c. gusty winds N d. good visibility 995: What is the equivalent of 83°29.6' in time units?
N a. 5h 47m 34.8s N b. 5h 18m 22.7s N c. 5h 01m 42.3s Y d. 5h 33m 58.4s 1022: What is the approximate geographic range of Fenwick Island Light, Delaware, if your height of eye is 37 feet (11.6 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 24.8 nm Y b. 17.8 nm N c. 15.9 nm N d. 10.3 nm 1047: Which is NOT a contributing cause of ocean currents?
N a. Surface winds N b. Density differences in the water N c. Underwater topography Y d. Gravitational effects of celestial bodies 1136: When a warm air mass overtakes and replaces a cold air mass, the contact surface is called a(n) __________.
Y a. warm front N b. cold front N c. line squall N d. occluded front 1140: What is the light characteristic of a lighted, preferred-channel buoy?
N a. Group flashing Y b. Composite group flashing N c. Interrupted quick flashing N d. Fixed and flashing 1142: Which weather conditions would you expect to find 100 miles East of position "B"? (D049NG )
N a. Winds NW at 20.5 knots, steady warm temperature, high seas N b. Winds calm, falling temperature, clear skies, high seas Y c. Winds WSW, steady temperature, scattered clouds, moderate seas N d. None of the above 1194: In the Northern Hemisphere, an observer at point II in the weather system should experience a wind shift from the __________. (D014NG )
Y a. southwest, clockwise to northwest N b. northeast, clockwise to west-southwest N c. northeast, counterclockwise to northwest N d. east, counterclockwise to south-southwest 1246: What weather change accompanies the passage of a cold front in the Northern Hemisphere?
N a. Wind shift from northeast clockwise to southwest N b. Steady dropping of barometric pressure N c. Steady precipitation, gradually increasing in intensity Y d. A line of cumulonimbus clouds 1253: The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is __________.
Y a. deviation N b. variation N c. compass error N d. dip 1256: A cold front moving in from the northwest can produce __________.
Y a. thunderstorms, hail, and then rapid clearing N b. increasing cloud cover lasting for several days N c. lengthy wet weather N d. low ceilings with thick cirrus clouds 1290: In addition to the National Weather Service, what agency provides plain-language radio weather advisories for the coastal waters of the United States?
N a. National Geospatial-Intelligence Agency N b. U.S. Hydrological Survey Y c. U.S. Coast Guard N d. American Meteorological Service 1318: You are to sail from Elizabethport, N.J., on 17 November 1983 with a maximum draft of 27 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 25.5 feet. The steaming time from Elizabethport to the obstruction is 1h 50m. What is the earliest time (ZD +5) you can sail on 17 November and pass over the obstruction with 2 feet of clearance?
N a. 0059 Y b. 0121 N c. 0159 N d. 0221 1408: An occluded front is caused by a(n) __________.
N a. low pressure area N b. high pressure area N c. area of calm air Y d. cold front overtaking a warm front 1413: The gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction is called __________.
N a. damping error N b. ballistic deflection N c. quadrantal error Y d. speed error 1461: The chart indicates the variation was 3°45'W in 1988, and the annual change is decreasing 6'. If you use the chart in 1991 how much variation should you apply?
Y a. 3°27'W N b. 3°27'E N c. 4°03'W N d. 4°03'E 1502: You are running parallel to the coast and take a running fix using bearings of the same object. If you are making less speed than used for the running fix, in relation to the position indicated by the fix, you will be __________.
Y a. closer to the coast N b. farther from the coast N c. on the track line ahead of the fix N d. on the track line behind the fix 1585: The sidereal day begins when the __________.
Y a. first point of Aries is over the upper branch of the reference meridian N b. Sun is over the lower branch of the reference meridian N c. Sun is over the upper branch of the reference meridian N d. first point of Aries is over the lower branch of the reference meridian 1664: Ascending and descending air masses with different temperatures is part of an important heat transmitting process in our atmosphere called __________.
N a. conduction N b. radiation Y c. convection N d. barometric inversion 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 1870: A vessel heading SW is on a course of __________.
N a. 202.5° Y b. 225.0° N c. 247.5° N d. 270.0° 1899: What is the relative bearing of an object broad on the starboard beam?
N a. 045° N b. 060° N c. 075° Y d. 090° 2021: While on watch, you notice that the air temperature is dropping and is approaching the dew point. Which type of weather should be forecasted?
N a. Hail N b. Heavy rain N c. Sleet Y d. Fog 2199: Denebola is found in what constellation?
N a. Hydrus Y b. Leo N c. Centaurus N d. Aquila 2212: Which information is found in the chart title?
N a. Number of the chart N b. Edition date N c. Variation information Y d. Survey information 2234: A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?
N a. Move the quadrantal spheres closer to the compass N b. Raise the heeling magnet if the red end is up N c. Remove some of the Flinders bar Y d. Raise or lower the athwartship magnets 2239: A flashing green light displayed at a single lock means that the lock is __________.
Y a. ready for entrance N b. ready for entrance, but gates cannot be closed completely N c. being made ready for entrance N d. not ready for entrance 2252: The vertical angle between the horizontal and the magnetic line of force is the __________.
N a. elevation N b. magnetic angle N c. vertical angle Y d. dip 2261: You determine your vessel's position by taking a range and bearing to a buoy. Your position will be plotted as a(n) __________.
N a. running fix N b. fix N c. dead-reckoning position Y d. estimated position 2354: A vessel is heading magnetic east and its magnetic compass indicates a heading of 093°. What action should be taken to remove this error during compass adjustment?
N a. If the blue ends of the magnets are to port you should raise the athwartships tray. N b. If the red ends of magnets are to port you should lower the athwartships tray. N c. If the red ends of the magnets are aft you should lower the fore-and-aft tray. Y d. If the blue ends of the magnets are forward you should raise the fore-and-aft tray. 2363: As shown, the position labeled C was plotted because __________. (D051NG )
N a. the vessel's speed changed N b. the vessel's course changed form due North to due East Y c. running fixes are better estimates of true position than dead-reckoning positions N d. All of the above are correct 2492: A star that suddenly becomes several magnitudes brighter and then gradually fades is a __________.
N a. double star N b. variable star Y c. nova N d. nebula 2544: At McAlpine L & D, normal upper pool elevation is 420.0 feet MSL, equal to 12.0 feet on the upper gage. The vertical clearance at the Clark Memorial Highway bridge is 72.6 feet above normal pool. What is the clearance if the gage reads 27.2 feet?
N a. 25.4 feet Y b. 57.4 feet N c. 60.6 feet N d. 72.6 feet 2579: A phase correction may be applicable to correct the sextant altitude correction of __________.
N a. any star N b. the Sun N c. third magnitude stars only Y d. some planets 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 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 2926: You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T and have the range in sight as shown. The range continues to open. Which action should you take? (D047NG )
Y a. Come left until the range closes then steer to the left of 306°T. N b. Alter course to the right to 309°T or more to bring the range in line. N c. Continue on course but be prepared to come right if the range continues to open. N d. Alter course to the left to close the range, then alter course to 309°T.