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.
15: What is the length of a nautical mile?
N a. 1,800 meters N b. 2,000 yards Y c. 6,076 feet N d. 5,280 feet 128: A position obtained by applying only your vessel's course and speed to a known position is a __________.
Y a. dead-reckoning position N b. fix N c. probable position N d. running fix 167: When the Moon's declination is maximum north, which of the following will occur?
N a. Mixed-type tides N b. Higher high tides and lower low tides Y c. Tropic tides N d. Equatorial tides 221: In United States waters, a buoy having red and white vertical stripes has a light characteristic of __________.
N a. group occulting Y b. Morse (A) N c. interrupted quick flashing N d. quick flashing 229: The shoreline on charts generally represents the mean __________.
Y a. high water line N b. low water line N c. low water spring line N d. tide level 279: As a vessel changes course to starboard, the compass card in a magnetic compass __________.
Y a. remains aligned with compass north N b. also turns to starboard N c. first turns to starboard then counterclockwise to port N d. turns counterclockwise to port 401: You are steaming in a westerly direction along the Gulf Coast. You see ahead of you a lighted buoy showing a red isophase light. Which action should you take?
Y a. Alter course to port and leave the buoy to starboard. N b. Alter course to starboard and leave the buoy to port. N c. Alter course and leave the buoy near by on either side. N d. Alter course and pass the buoy well-off on either side. 438: Your longitude is 124°E, and your local mean time is 0520 on the 5th of the month. The mean time and date at Greenwich is __________.
N a. 1336 on the 4th N b. 1336 on the 5th Y c. 2104 on the 4th N d. 2104 on the 5th 449: You are enroute to assist vessel A. Vessel A is underway at 5 knots on course 063°T, and bears 136°T at 78 miles from you. What is the course to steer at 13 knots to intercept vessel A?
N a. 340° N b. 295° N c. 158° Y d. 114° 462: For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?
Y a. Plotting radio bearings over a long distance N b. Determining latitude and longitude of a fix N c. Measuring rhumb line distances N d. Measuring rhumb line directions 464: Prior to reading an aneroid barometer, you should tap the face lightly with your finger to __________.
N a. expose any loose connections N b. demagnetize the metal elements Y c. bring the pointer to its true position N d. contract and expand the glass face 484: The needle of an aneroid barometer points to 30.05 on the dial. This indicates that the barometric pressure is __________.
Y a. 30.05 inches of mercury N b. 30.05 millimeters of mercury N c. 30.05 millibars N d. falling 494: Aneroid barometers are usually calibrated to indicate atmospheric pressure in __________.
N a. inches of mercury and centimeters N b. feet of mercury and millibars N c. inches of mercury and millimeters Y d. inches of mercury and millibars 566: You are attempting to locate your position relative to a hurricane in the Northern Hemisphere. If the wind direction remains steady, but with diminishing velocity, you are most likely __________.
N a. in the right semicircle N b. in the left semicircle N c. on the storm track ahead of the center Y d. on the storm track behind the center 630: What kind of weather would you expect to accompany the passage of a tropical wave?
Y a. Heavy rain and cloudiness N b. Good weather N c. A tropical storm N d. Dense fog 669: It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at least every __________.
N a. hour Y b. 3 hours N c. 6 hours N d. 8 hours 670: A NAVAREA warning carries the following number; 1986/87 (11). Which statement is TRUE?
N a. The warning was issued in 1986, the 87th sequentially numbered warning and broadcast 11 times. Y b. This is warning number 1986 issued in 1987, and it affects sub-region 11. N c. This warning is valid in 1986 and 1987 and is the eleventh two-year warning. N d. The subject of this warning first appeared in 1986; this warning is in 1987 and is the eleventh on this topic. 684: The ARPA may swap targets when automatically tracking if two targets __________.
N a. are tracked on reciprocal bearings N b. are tracked at the same range N c. are tracked on the same bearing Y d. pass close together 693: Which general statement concerning radar is FALSE?
N a. Raising the antenna height increases the radar range. Y b. The ability of radar to detect objects is unaffected by weather conditions. N c. Radar bearings are less accurate than radar ranges. N d. Radar should be checked regularly during clear weather to ensure that it is operating properly. 717: Which term refers to the direction a current is flowing?
Y a. Set N b. Drift N c. Vector direction N d. Stand 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 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 836: In North America the majority of the weather systems move from __________.
N a. north to south N b. south to north N c. east to west Y d. west to east 860: The Light List shows that a navigational light has a nominal range of 10 miles and a height above water of 38 feet (11.6 meters). Your height of eye is 52 feet (15.8 ,meters) and the visibility is 11.0 miles. At which approximate range will you first sight the light?
Y a. 10.5 miles N b. 13.9 miles N c. 15.6 miles N d. 18.0 miles 870: Vessels should maintain a sharp lookout, especially during December through March, when navigating the right whale's only known calving grounds which lie off the coasts of __________.
N a. Nova Scotia N b. Maine and Massachusetts Y c. Georgia and NE Florida N d. California and Mexico 913: How many points are there in a compass card?
N a. 4 N b. 8 N c. 24 Y d. 32 919: 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. Y b. The course and speed made good should be determined and used to advance the LOP. N c. The current should be ignored. N d. The set should be applied to the second bearing. 942: Light Lists for coastal waters are __________.
N a. published every year and require no corrections N b. published every second year and must be corrected N c. published every five years and require no correction Y d. accurate thru NM number on title page and must be corrected 952: What is TRUE concerning new editions of Light Lists?
N a. Supplements to new editions are issued monthly by the U.S. Coast Guard. N b. New editions are published by the National Ocean Service. Y c. New editions are corrected through the date shown on the title page. N d. None of the above 984: The bases of middle clouds are located at altitudes of between __________.
N a. 3,000 to 6,500 feet (914 to 1981 meters) Y b. 6,500 to 20,000 feet (1981 to 6096 meters) N c. 10,000 to 35,000 feet (3048 to 10,668 meters) N d. 20,000 to 60,000 feet (6096 to 18,288 meters) 993: When crossing the magnetic equator the __________.
N a. Flinders bar should be inverted Y b. heeling magnet should be inverted N c. the quadrantal spheres should be rotated 180° N d. Flinders bar should be moved to the opposite side of the binnacle 1223: The difference between magnetic heading and compass heading is called __________.
N a. variation Y b. deviation N c. compass error N d. drift 1252: Port side daymarks may be __________.
Y a. numbered N b. octagonal N c. black and white N d. of any shape 1255: The wind velocity is higher in the dangerous semicircle of a tropical cyclone because of the __________.
N a. extension of the low pressure ridge N b. direction of circulation and pressure gradient N c. recurvature effect Y d. the wind circulation and forward motion of the storm 1277: The velocity and direction of the tidal current at Port Morris, NY, at 1135 DST (ZD +4) on 13 May 1983 will be __________.
Y a. negligible at 220°T N b. 3.1 knots at 045°T N c. 1.2 knots at 220°T N d. 1.0 knot at 045°T 1329: Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 54s at the 1500 GMT time tick. What is the chronometer rate?
N a. 1m 54s fast N b. 2s fast Y c. -2s N d. +2s 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 1454: Atmospheric pressure may be measured with a(n) __________.
N a. barograph N b. aneroid barometer N c. mercurial barometer Y d. All of the above 1475: Which type of cloud is the classic "thunderhead"?
Y a. Cumulonimbus N b. Stratus N c. Cirrus N d. Altostratus 1569: Three or four feet of the total height of a storm surge in a hurricane can be attributed to __________.
N a. an increase in temperature N b. an increase in the wave period N c. the wind velocity Y d. the decrease in atmospheric pressure 1607: When your barometer reading changes from 30.25 to 30.05 in a 12-hour period it indicates __________.
N a. rapidly changing weather N b. improving weather N c. high winds within the next six hours Y d. little or no immediate change 1711: An instrument that indicates wind direction is known as a(n) __________.
Y a. weather vane, wind vane or wind sock N b. hydrometer N c. hygrometer N d. sling psychrometer 1782: You are on course 027°T and take a relative bearing to a lighthouse of 220°. What is the true bearing to the lighthouse?
N a. 113° N b. 193° Y c. 247° N d. 279° 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° 1996: When approaching a lock entrance, the visual signal displayed when a single lock is ready for entrance is a flashing __________.
N a. red light Y b. green light N c. amber light N d. white light 2226: Upper limb observations of the Moon are used more frequently than those of the Sun because of the location of the Moon in the sky and the __________.
N a. lesser distance between the Earth and the Moon Y b. phase of the Moon N c. rapid change in declination of the Moon N d. effects of augmentation and horizontal parallax 2268: What condition exists at perigee?
N a. The Earth is farthest from the Sun. N b. The Earth, Sun, and Moon are in line. N c. The Earth, Sun, and Moon are at right angles. Y d. The Moon is closest to the Earth. 2268: What condition exists at perigee?
N a. The Earth is farthest from the Sun. N b. The Earth, Sun, and Moon are in line. N c. The Earth, Sun, and Moon are at right angles. Y d. The Moon is closest to the Earth. 2280: Which would influence a magnetic compass?
N a. Electrical wiring N b. Iron pipe N c. Radio Y d. All of the above 2330: You are heading in a northerly direction when you come across an easterly current. Your vessel will __________.
Y a. be pushed to starboard N b. be pushed to port N c. decrease in engine speed N d. remain on course 2570: A plane that cuts the Earth's surface and passes through the poles will always form __________.
N a. the equator N b. a loxodromic curve N c. a small circle Y d. a meridian 2772: The direction in which a vessel should be steered between two points is the __________.
Y a. course N b. heading N c. bearing N d. course over the ground 2794: The standard atmospheric pressure in millibars is __________.
N a. 760.0 N b. 938.9 N c. 1000.0 Y d. 1013.2 2805: You are entering port and have been instructed to anchor, as your berth is not yet available. You are on a SW'ly heading, preparing to drop anchor, when you observe the range as shown on your starboard beam. You should __________. (D047NG )
N a. drop the anchor immediately as the range lights mark an area free of obstructions N b. drop the anchor immediately as a change in the position of the range lights will be an indication of dragging anchor N c. NOT drop the anchor until the lights are in line Y d. ensure your ship will NOT block the channel or obstruct the range while at anchor 2814: In low latitudes the range of the diurnal variation of pressure is up to __________.
N a. 0.5 millibar Y b. 3.0 millibars N c. 6.0 millibars N d. 10.0 millibars 2854: The distance in miles between the circle of equal altitude for the observed altitude (Ho) and the circle of equal altitude for the computed altitude (Hc) is the __________.
N a. equation of time N b. zenith distance Y c. intercept N d. zenith angle 2891: Twenty-three meters equals __________.
N a. 17.50 feet Y b. 75.46 feet N c. 96.00 feet N d. 104.99 feet 3008: You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?
N a. 291° N b. 261° N c. 242° Y d. 196° 3018: You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?
N a. 013° N b. 178° Y c. 256° N d. 342° 3018: You take a bearing of 356° of a lighthouse. Which bearing of another object would give the best fix?
N a. 013° N b. 178° Y c. 256° N d. 342°