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 31: When approaching a preferred-channel buoy, the best channel is NOT indicated by the __________.
Y a. light characteristic N b. color of the uppermost band N c. shape of an unlighted buoy N d. color of the light 32: The datum used for soundings on charts of the Atlantic Coast of the United States is mean __________.
N a. low water Y b. lower low water N c. higher high water N d. high water 70: The station located at "A" is the __________. (D001NG )
N a. on station N b. off station Y c. master station N d. secondary station 80: When the moon is at first quarter or third quarter phase, what type of tides will occur?
N a. Apogean N b. Perigean Y c. Neap N d. Spring 223: In the Loran-C configuration shown, the stations located at X, Y, and Z are called __________. (D003NG )
N a. repeater stations Y b. secondary stations N c. composite stations N d. alternate stations 252: A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbol? (D015NG )
N a. A Y b. B N c. C N d. D 278: You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from your position. The hurricane is moving towards 270°T at 19 knots. If you maneuver at 11 knots to avoid the hurricane, what could be the maximum CPA?
N a. 84 miles N b. 79 miles N c. 74 miles Y d. 66 miles 345: A navigator fixing a vessel's position by radar __________.
N a. should never use radar bearings N b. should only use radar bearings when the range exceeds the distance to the horizon Y c. can use radar information from one object to fix the position N d. must use information from targets forward of the beam 349: The direction of the southeast trade winds is a result of the __________.
N a. equatorial current N b. humidity Y c. rotation of the earth N d. change of seasons 457: Find the height of the tide at Port Wentworth, GA, on 5 October 1983, at 1840 DST (ZD +4).
N a. 3.0 feet N b. 3.5 feet N c. 4.0 feet Y d. 4.4 feet 481: A special mark (yellow buoy), if lighted, may exhibit which light rhythm?
Y a. Flashing N b. Morse "A" N c. Equal interval N d. Occulting 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 588: You are underway on course 050°T and your maximum speed is 10 knots. The eye of a hurricane bears 100°T, 90 miles from your position. The hurricane is moving towards 285°T at 19 knots. If you maneuver at 10 knots to avoid the hurricane, what could be the maximum CPA?
N a. 39 miles N b. 45 miles Y c. 53 miles N d. 59 miles 711: In the IALA Maritime Buoyage System, a red and white vertically-striped buoy is used as a(n) __________.
Y a. safe water mark N b. cardinal mark N c. isolated danger mark N d. special mark not primarily used for navigation 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 752: Which publication would NOT be used on a voyage from Houston to New York?
N a. Coast Pilot N b. Light List N c. Radio Navigational Aids Y d. Sailing Directions (Enroute) 798: A HYDROLANT warning would normally be sent for all of the following EXCEPT __________.
Y a. extinguishment of Robbins Reef Light in New York City's Upper Bay N b. unexploded ordinance in ocean waters at a depth of 78 fathoms (143 meters) N c. the presence of a large unwieldy tow in congested offshore water N d. a report of an overdue ship 907: In which month will the equatorial counter current be strongest?
N a. January N b. April Y c. August N d. October 1038: You are preparing a weather report form, WS Form B-80. The dry bulb thermometer reads 54°F, and the wet bulb thermometer reads 50°F. How would you encode the air temperature groups in the report? (D041NG )
N a. 1054/, 2050/ Y b. 10122, 2008/ N c. 1054/, 2047/ N d. 054//, 047// 1067: The two most effective generating forces of surface ocean currents are __________.
N a. temperature and salinity differences in the water Y b. wind and density differences in the water N c. water depth and underwater topography N d. rotation of the Earth and continental interference 1083: Magnets are placed in horizontal trays in the compass binnacle to compensate for the __________.
N a. induced magnetism in the vessel's horizontal soft iron N b. change in the magnetic field when the vessel inclines from vertical Y c. permanent magnetism of the vessel N d. magnetic fields caused by electrical currents in the vicinity 1185: An orange and white buoy with a rectangle on it displays __________.
N a. directions N b. distances N c. locations Y d. All of the above 1203: If the compass heading and the magnetic heading are the same then __________.
N a. the deviation has been offset by the variation N b. there is something wrong with the compass N c. the compass is being influenced by nearby metals Y d. there is no deviation on that heading 1206: Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.
N a. passage of a warm front Y b. passage of a cold front N c. winds shifting counterclockwise in the Northern Hemisphere N d. stationary high pressure systems 1210: 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. N b. Maintain course as it is normal for the range to open as you get close. Y c. Alter course to the left until the range closes, then steer to the left of 306°T. N d. Alter course to the left to close the range, then alter course to 309°T. 1265: When reporting wind direction, you should give the direction in __________.
Y a. true degrees N b. magnetic compass degrees N c. relative degrees N d. isobaric degrees 1364: The Sailing Directions are published in the Enroute format and the __________.
N a. Coastal editions N b. World Port Index N c. Pilot format Y d. Planning Guide 1375: The Moon rises earlier on succeeding days when the __________.
N a. retardation effect of the revolution of the Moon is greater than the effect due to change of declination Y b. effect due to change of declination is larger than that due to revolution N c. the revolution effect and the declination effect act in the same direction N d. the Moon is on the equator and the revolution effect is at a maximum 1464: A line of position derived from a loran reading is a section of a(n) __________.
N a. straight line N b. arc N c. parabola Y d. hyperbola 1495: A great circle crosses the equator at 157°W. It will also cross the equator at what other longitude?
N a. 157°E N b. 57°E Y c. 23°E N d. 57°W 1521: To avoid error you should read the scale of an aneroid barometer with your eye placed __________.
N a. to the right of the pointer N b. to the left of the pointer Y c. directly in front of the pointer N d. slightly above the meniscus 1598: A slow, gradual fall of the barometer indicates approaching __________.
N a. gale force winds within 12 hours N b. blizzard conditions Y c. deteriorating or unsettled weather N d. heavy, wind driven rain 1672: Data relating to the direction and velocity of rotary tidal currents can be found in the __________.
N a. Mariner's Guide Y b. Tidal Current Tables N c. Nautical Almanac N d. Tide Tables 1955: The letter A in illustration D006NG represents the __________.
N a. geoidal horizon Y b. sensible horizon N c. celestial horizon N d. visible horizon 2044: What is the relative bearing of an object broad on the port quarter?
N a. 195° Y b. 225° N c. 240° N d. 265° 2060: What is the relative bearing of an object broad on the starboard quarter?
N a. 045° N b. 090° Y c. 135° N d. 225° 2075: Information about major breakdowns, repairs, or other emergency operations with regard to weirs and (or) wicket dams, on the western rivers, may be obtained by consulting the __________.
N a. Light List Vol. V N b. U.S. Coast Pilot Y c. Broadcast Notice to Mariners N d. Sailing Directions 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 2192: Off Fire Island, NY, with winds from the southwest, the average wind-driven current flows in a direction of __________.
N a. 256° N b. 170° Y c. 076° N d. 014° 2222: By convention, the south pole of a magnet is painted __________.
N a. red Y b. blue N c. white N d. black 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 2276: A vessel is heading magnetic east and its magnetic compass indicates a heading of 086°. Which action should be taken to remove this error during compass adjustment?
Y a. If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets. N b. If the blue ends of the magnets are aft you should lower the fore-and-aft tray. N c. If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should reverse the magnets. N d. If the blue ends of the magnets are forward, and the fore-and-aft tray is at the bottom, you should add some magnets. 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 2569: The mean sun used to measure time moves __________.
N a. along the ecliptic at 15° per hour N b. along the celestial equator at 15° per day N c. along the ecliptic at 15° per day Y d. along the celestial equator at 15° per hour 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 2582: You must construct a Mercator plotting sheet on a piece of paper measuring 32" by 36". The area includes latitude 31°S to 37°S and longitude 005°W to 002°E. Allow a three-quarter 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 limitations?
N a. 4.00 inches N b. 4.11 inches N c. 4.25 inches Y d. 4.36 inches 2620: The navigator is concerned with three systems of coordinates. Which system is not of major concern?
N a. Terrestrial Y b. Ecliptic N c. Celestial horizon N d. Celestial equator 2628: A drawbridge may use visual signals to acknowledge a vessel's request to open the draw. Which signal indicates that the draw will NOT be opened immediately?
N a. A flashing amber light Y b. A fixed red light N c. A white flag raised and lowered vertically N d. A flashing white light 2654: What is the equivalent of 5°54' in time units?
N a. 20 min. 16 sec. Y b. 23 min. 36 sec. N c. 25 min. 54 sec. N d. 30 min. 27 sec. 2705: Information about the direction and velocity of rotary tidal currents is found in the __________.
Y a. Tidal Current Tables N b. Mariner's Guide N c. Tide Tables N d. Nautical Almanac 2719: Under the U.S. Aids to Navigation System on the Western Rivers, passing daymarks on the right descending bank are __________.
N a. red diamond-shaped panels with red reflector borders N b. red triangular-shaped panels with red reflector borders Y c. green square-shaped panels with green reflector borders N d. green triangular-shaped panels with green reflector borders 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 2839: Privately maintained aids to navigation included in the Light List __________.
N a. are painted white and must use a white light if lighted N b. must be conspicuously marked by a signboard with the words "PRIVATE AID" Y c. must conform to the standards of the U.S. Aids to Navigation System N d. are not permitted in or along first-class waterways and may be authorized for second- and third-class waterways 2843: A position obtained by applying ONLY your vessel's course and speed to a known position is a __________.
N a. fix N b. running fix Y c. dead-reckoning position N d. probable position 2908: A daymark used to indicate the port side of the channel when approaching from seaward is indicated by what letter in illustration D045NG?
Y a. A N b. B N c. C N d. D 2925: A single line of position combined with a dead-reckoning position results in a(n) __________.
N a. running fix N b. fix N c. assumed position Y d. estimated position 2974: What daymark shape is used in the lateral system?
N a. Semicircle Y b. Triangle N c. Pentagon N d. Diamond 3038: In low latitudes, the low(s) of the diurnal variation of pressure occur(s) at __________.
N a. noon N b. noon and midnight N c. 1000 and 2200 Y d. 0400 and 1600 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