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.
65: The LMT of LAN is 1210. Your longitude is 70°30'E. Which time would you use to enter the Nautical Almanac to determine the declination of the Sun at LAN?
N a. 1842 N b. 1652 Y c. 0728 N d. 0652 152: A chart with a natural scale of 1:160,000 is classified as a __________.
N a. sailing chart Y b. general chart N c. coast chart N d. harbor chart 164: The part of a sextant mounted directly over the pivot of the index arm is the __________.
Y a. index mirror N b. horizon glass N c. micrometer drum N d. telescope 291: A buoy marking a wreck will show a(n) __________.
Y a. white light FL (2) and a topmark of 2 black spheres N b. occulting green light and may be lettered N c. yellow light and will be numbered N d. continuous quick white light and may be numbered 429: A great circle crosses the equator at 127°W. It will also cross the equator at what other longitude?
N a. 127°E Y b. 53°E N c. 27°E N d. 27°W 434: The purpose of the "set" hand on an aneroid barometer is to __________.
N a. adjust the barometer Y b. indicate any change in the reading of the barometer N c. provide a correction for height above sea level N d. provide a correction for temperature changes 561: Buoys which mark dredging areas are painted __________.
N a. black Y b. yellow N c. green N d. red 586: The approximate distance to a storm center can be determined by noting the hourly rate of fall of the barometer. If the rate of fall is 0.08 - 0.12 inches, what is the approximate distance to the storm center?
N a. 50 to 80 miles Y b. 80 to 100 miles N c. 100 to 150 miles N d. 150 to 250 miles 638: Swell is the rise and fall of the ocean's surface due to __________.
N a. fetch Y b. distant winds N c. local storms N d. the pull of the moon 648: Weather systems in the middle latitudes generally travel from __________.
N a. north to south Y b. west to east N c. east to west N d. None of the above 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 680: The apparent wind's speed can be zero, but only when two conditions are present. One condition is that the true __________.
N a. wind must be on the beam N b. wind's speed must be zero N c. wind must be from dead ahead Y d. wind's speed equals the ship's speed 739: The upper vertex of a great circle track is in LONG 156°00'E. Sailing eastward, the great circle track will cross the equator in LONG __________.
Y a. 114°00'W N b. 110°00'W N c. 66°00'W N d. 66°00'E 802: Which is a weekly publication advising mariners of important matters affecting navigational safety?
N a. Light List Y b. Notice to Mariners N c. Coast Pilot N d. Sailing Directions 848: It is unlawful to approach within how many yards of a northern right whale?
N a. 200 N b. 300 N c. 400 Y d. 500 871: Under the IALA-A Buoyage System, a buoy marking the starboard side of the channel when approaching from seaward must have a(n) __________.
N a. pillar shape Y b. green color N c. square topmark N d. even number 893: One point of a compass is equal to how many degrees?
N a. 7.5 Y b. 11.25 N c. 17.5 N d. 22.5 899: A latitude line will be obtained by observing a body __________.
N a. on the prime vertical N b. on the celestial horizon Y c. at lower transit N d. on the Greenwich meridian 1049: At 0000 you fix your position and change course to 270°T. At 0030 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?
N a. The set is 090°, drift 0.5 knot. Y b. The set is 090°, drift 1.0 knot. N c. The set is 270°, drift 0.5 knot. N d. The set is 270°, drift 1.0 knot. 1072: What is the approximate geographic range of Assateague Light, VA, if your height of eye is 52 feet (15.8 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 14.1 nm N b. 21.8 nm Y c. 23.0 nm N d. 50.2 nm 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. 1121: The articulated light is superior to other types of buoys because __________.
N a. the radar reflectors reflect better signals N b. fog horn signals travel farther to sea N c. it is equipped with strobe lights Y d. it has a reduced watch circle 1183: The principal purpose of magnetic compass adjustment is to __________.
N a. reduce the variation as much as possible Y b. reduce the deviation as much as possible N c. reduce the magnetic dip as much as possible N d. allow the compass bowl to swing freely on its gimbals 1221: On a chart, the characteristic of the light on a lighthouse is shown as flashing white with a red sector. The red sector __________.
N a. indicates the limits of the navigable channel Y b. indicates a danger area N c. is used to identify the characteristics of the light N d. serves no significant purpose 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 1306: What type of clouds are associated with a cold front?
N a. Altostratus and fracto-cumulus N b. Altostratus and cirrus N c. Cirrus and cirrostratus Y d. Cumulus and cumulonimbus 1317: What will be the velocity and direction of the tidal current at Mobile River Entrance, AL, at 0915 CDT (ZD +5) on 13 May 1983?
N a. 0.1 knot at 333°T Y b. 0.3 knot at 333°T N c. 0.7 knot at 151°T N d. 1.8 knots at 025°T 1431: A lighthouse is 120 feet (36.6 meters) high and the light has a nominal range of 18 miles. Your height of eye is 42 feet (12.8). If the visibility is 11 miles, approximately how far off the light will you be when the light becomes visible?
N a. 12.5 miles N b. 16.0 miles Y c. 19.0 miles N d. 23.5 miles 1698: When a high pressure system is centered north of your vessel in the Northern Hemisphere __________.
N a. you should experience hot, moist, clear weather Y b. the wind direction is generally easterly N c. the winds should be from the southwest at your location N d. the winds should be brisk 1707: "Surface circulation" is another term for __________.
N a. cyclones N b. air in motion at all levels of the atmosphere Y c. wind in the lower troposphere N d. ocean currents 1737: You can determine if your vessel's position is in the dangerous or navigable semicircle of a hurricane by __________.
N a. observing whether the wind is veering or backing N b. plotting two or more recent storm positions from weather bulletins Y c. Both A and B N d. Neither A nor B 1740: If you are in the dangerous semicircle of a hurricane you can expect all of the following except __________.
Y a. backing winds N b. high seas N c. high winds N d. veering winds 1742: In the Northern hemisphere which semicircle of a hurricane is the navigable semicircle?
Y a. Left N b. Right N c. Front N d. Back 1789: The Illustration represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter F in the illustration? (D036NG )
Y a. One red light N b. Two green lights N c. Three green lights N d. No light(s) 1803: The difference between the DR position and a fix, both of which have the same time, is caused by __________.
N a. variation N b. deviation Y c. current N d. leeway 1840: A vessel heading NW is on a course of __________.
N a. 274.5° N b. 292.5° Y c. 315.0° N d. 337.5° 1922: In the North Sea area, you sight a buoy showing a quick white light with 9 flashes every 15 seconds. Which of the four topmarks shown would be fitted to the buoy? (D030NG )
N a. A N b. B Y c. C N d. D 2104: A white buoy marked with an orange rectangle indicates __________.
N a. mid-channel N b. a fish net area Y c. general information N d. an anchorage 2158: Permanent magnetism is caused by __________.
N a. operation of electrical equipment and generators on board ship Y b. the earth's magnetic field affecting the ship's hard iron during construction N c. the horizontal component of the earth's magnetic field acting on the horizontal soft iron N d. the vertical component of the earth's magnetic field acting on the vertical soft iron 2176: The illustration 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 D if the lock walls and piers are not awash? (D037NG )
N a. Three red lights N b. Two red lights Y c. One red light N d. One amber light 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 2272: Mars will not be visible __________.
N a. at elongation angles near 180° N b. from quadrature to opposition Y c. at conjunction N d. at opposition 2306: In the North Sea area, you sight a buoy showing a quick white light with 9 flashes every 15 seconds. Which of the four topmarks shown would be fitted to the buoy? (D031NG )
Y a. A N b. B N c. C N d. D 2380: The navigation regulations applicable to a U.S. inland waterway can be found in the __________.
N a. Notices to Mariners N b. Channel Reports N c. Sailing Directions Y d. Coast Pilots 2560: A plane that cuts the Earth's surface at any angle and passes through the center will always form __________.
N a. the equator Y b. a great circle N c. a small circle N d. a meridian 2590: A plane perpendicular to the polar axis will never form what line on the Earth's surface?
N a. Great circle N b. Equator N c. Small circle Y d. Meridian 2660: In the celestial equator system of coordinates what is equivalent to the longitude of the Earth system of coordinates?
N a. Zenith distance N b. Azimuth angle N c. Declination Y d. Greenwich hour angle 2673: A bluff bar is a bar __________.
N a. extending out from a bluff alongside the river N b. that tends to give a false indication of its position Y c. that has a sharp drop off into deep water N d. that is perpendicular to the current 2688: The 10-cm radar as compared to a 3-cm radar of similar specifications will __________.
N a. be more suitable for river and harbor navigation N b. provide better range performance on low lying targets during good weather and calm seas Y c. have a wider horizontal beam width N d. have more sea return during rough sea conditions 2826: You take a bearing of 043° and 169° of two objects. What bearing of a third object will give the best fix?
N a. 356° Y b. 102° N c. 144° N d. 201° 2918: Which agency maintains federal aids to navigation?
N a. Corps of Engineers Y b. Coast Guard N c. National Ocean Service N d. Maritime Administration 2940: On the Corps of Engineer's Navigation Maps, the channel is __________.
N a. midway between the banks N b. indicated by depths (in feet) Y c. indicated by a broken line N d. not indicated 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° 3032: The direction in which a vessel is steered is the course. The path actually followed is the __________.
N a. route N b. track N c. heading Y d. course over the ground 3057: IN REGION A of the IALA Buoyage System, when entering from seaward, the starboard side of a channel would be marked by a __________.
Y a. green conical buoy N b. green can buoy N c. red can buoy N d. red conical buoy 3068: Which of the following data layer categories is NOT displayed on ECDIS?
N a. Notice to Mariners information N b. ECDIS warnings and messages Y c. Ship hydrodynamic information N d. Hydrographic Office data 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 3085: An ECDIS is required to display which information?
N a. Water temperature N b. Climatology data N c. Speed of advance Y d. Depth contours 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 3113: With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
N a. Call sign N b. Vessel's draft N c. Route plan Y d. None of the above