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.
83: All Loran-C transmitting stations are equipped with cesium frequency standards which permit __________.
N a. every station in one chain to transmit at the same time Y b. each station to transmit without reference to another station N c. on-line transmission of single-line transmitters at the same time N d. each station to only depend on the master for synchronization and signal ratio 129: In working out a local apparent noon sight for your latitude, you subtract the Ho from 90°. The 90° represents the angular distance from __________.
N a. the equator to the elevated pole Y b. your horizon to your zenith N c. your zenith to the elevated pole N d. the geographical position of the Sun to the elevated pole 165: On 6 July 1981, at 1000 zone time, you cross the 180th meridian steaming westward. What is your local time?
N a. It is 1000, 5 July. N b. It is 1000, 6 July. N c. It is 2200, 7 July. Y d. It is 1000, 7 July. 202: On charts of U.S. waters, a magenta marking is NOT used for marking a __________.
N a. radio beacon N b. lighted buoy N c. prohibited area Y d. 5-fathom curve 227: The class of tide that prevails in the greatest number of important harbors on the Atlantic Coast is __________.
N a. interval N b. mixed N c. diurnal Y d. semidiurnal 255: On March 17, at 0500 zone time, you cross the 180th meridian steaming eastward to west longitude. What is your local time?
N a. You are in -12 time zone. N b. It is 1700, March 18. Y c. It is 0500, March 16. N d. It is 0500, March 18. 318: Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate the __________.
N a. distance to the next port Y b. speed of the vessel over the ground or through the water N c. time of the next navigational satellite pass N d. None of the above 440: You are inbound in a channel marked by a range. The range line is 309°T. You are steering 306°T. The range appears as shown and is closing. Which action should you take? (D047NG )
N a. Continue on the present heading until the range is in line, then alter course to the left. N b. Immediately alter course to the right to bring the range in line. N c. Immediately alter course to 309°T. Y d. Continue on course until the range is closed, then alter course to the right. 461: Under the U.S. Aids to Navigation System, a yellow buoy may __________.
Y a. mark a fish net area N b. be lighted with a white light N c. show a fixed red light N d. All of the above 532: In a river subject to tidal currents, the best time to dock a ship without the assistance of tugs is __________.
N a. at high water Y b. at slack water N c. at flood tide N d. when there is a following current 562: You wish to measure the distance on a Mercator chart between a point in latitude 42°30'N and a point in latitude 40°30'N. To measure 30 miles at a time you should set the points of the dividers at __________.
Y a. 41°15' and 41°45' N b. 41°45' and 42°15' N c. 42°15' and 42°45' N d. 42°00' and 42°30' 660: What is the length of a nautical mile?
N a. 1,850 meters N b. 5,280 feet N c. 1,760 yards Y d. 6,076 feet 719: You are on course 209°T. In order to check the longitude of your vessel, you should observe a celestial body on which bearing?
N a. 209° Y b. 270° N c. 299° N d. 000° 873: Compass error is equal to the __________.
N a. deviation minus variation N b. variation plus compass course Y c. combined variation and deviation N d. difference between true and magnetic heading 996: Warm air masses will generally have __________.
N a. turbulence within the mass Y b. stratiform clouds N c. heavy precipitation N d. good visibility 997: A coastal current __________.
N a. is generated by waves striking the beach Y b. flows outside the surf zone N c. flows in a circular pattern N d. is also known as a longshore current 1037: Generally speaking, a ship steaming across the North Pacific from Japan to Seattle is likely to experience __________.
N a. adverse currents for practically the entire crossing Y b. favorable currents for practically the entire crossing N c. favorable currents in the summer months and adverse currents in the winter months N d. variable currents having no significant effect on the total steaming time 1046: The probability of a sudden wind may be foretold by __________.
N a. a partly cloudy sky N b. an overcast sky Y c. a fast approaching line of dark clouds N d. the formation of cumulus clouds in the sky 1062: What is the approximate geographic range of Horton Point Light, NY, if your height of eye is 40 feet (12.2 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS" .
N a. 18.8 nm Y b. 19.3 nm N c. 20.3 nm N d. 24.8 nm 1087: The velocity of a rotary tidal current will increase when the Moon is __________.
N a. new N b. full N c. at perigee Y d. All of the above 1180: You are on course 238°T. To check the course of your vessel you should observe a celestial body on which bearing?
N a. 180° N b. 238° Y c. 328° N d. 090° 1303: Compass deviation is caused by __________.
N a. magnetism from the earth's magnetic field N b. misalignment of the compass Y c. magnetism within the vessel N d. a dirty compass housing 1342: An occluded front on a weather map is colored __________.
N a. blue line Y b. purple line N c. dashed blue line N d. alternate red and blue line 1390: The fog most commonly encountered at sea is called __________.
N a. conduction fog N b. radiation fog N c. frontal fog Y d. advection fog 1427: Determine the duration of the first PM slack water on 3 March 1983, east of the Statue of Liberty, when the current is less than 0.1 knot?
N a. 10 minutes Y b. 13 minutes N c. 16 minutes N d. 19 minutes 1468: What is NOT an advantage of the rhumb line track over a great circle track?
N a. Easily plotted on a Mercator chart N b. Negligible increase in distance on east-west courses near the equator N c. Does not require constant course changes Y d. Plots as a straight line on Lambert conformal charts 1487: At the approaches to Savannah, GA, with the wind coming out of the west, the wind-driven current will be flowing approximately __________.
Y a. 080° N b. 100° N c. 260° N d. 280° 1520: The diurnal inequality of the tides is caused by __________.
Y a. the declination of the Moon N b. changing weather conditions N c. the Moon being at apogee N d. the Moon being at perigee 1560: Under the IALA-A and B Buoyage Systems, a buoy with alternating red and white vertical stripes indicates __________.
Y a. that there is navigable water all around N b. an isolated danger exists N c. that the preferred channel is to port N d. that the preferred channel is to starboard 1589: You are enroute to Savannah, GA, from Recife, Brazil. There is a strong N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.
N a. smoother seas and warmer water Y b. steeper waves, closer together N c. long swells N d. cirrus clouds 1641: The low, dark, sheet-like cloud which is associated with continuous precipitation for many hours is a __________.
N a. cirrus cloud N b. cumulus cloud N c. cumulonimbus cloud Y d. nimbostratus cloud 1662: Fog generally clears when the __________.
N a. wind speed increases N b. wind direction changes N c. temperature increases Y d. All of the above 1674: The letter D in illustration D006NG represents the __________.
N a. visible horizon Y b. geometrical horizon N c. celestial horizon N d. geoidal horizon 1676: Lighted information markers show __________.
N a. green lights Y b. white lights N c. yellow lights N d. red lights 1715: The hurricane season generally occurs from __________.
N a. August to January N b. July to December Y c. June to November N d. January to June 1732: The eye of a hurricane is surrounded by dense black cumulonimbus clouds which are called the __________.
Y a. wall cloud N b. nimbostratus cloud N c. bar N d. funnel 1766: You are approaching a lock and see a flashing amber light located on the lock wall. You should __________.
N a. stand clear of the lock entrance Y b. approach the lock under full control N c. enter the lock as quickly as possible N d. hang off your tow on the lock wall 1866: What term is used to describe a tank barge constructed with the structural framing inside the cargo tank and the side shell plating containing the cargo?
Y a. Single hull N b. Shell plated N c. Hopper type N d. Independent tank 1905: In order to insure that the racon signal is visible on your 3 cm radar, the __________.
N a. 10 cm radar should be placed on standby or turned off N b. gain control should be turned to maximum N c. radar should be stabilized, head up Y d. rain clutter control should be off but, if necessary, may be on low 2058: Illustration D038NG represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D in the illustration? (D038NG )
N a. One red light N b. Two green lights Y c. Three green lights N d. No lights 2072: The Illustration represents a movable dam. If a bear trap is open what will be displayed at the lock to indicate this condition? (D037NG )
Y a. An amber light under a red light N b. A white square N c. A green triangle N d. A yellow pentagon 2097: 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. Sailing Directions Y b. Broadcast Notice to Mariners N c. Light List Vol. V N d. None of the above 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 2262: The Milky Way is an example of a __________.
N a. cluster Y b. galaxy N c. nova N d. nebula 2387: You are on a voyage from New Orleans to Boston and navigating off the Florida coast. You will get the greatest benefit from the Gulf Stream if you navigate __________.
N a. about 5 miles east of Cape Canaveral N b. about 15 miles east of Daytona N c. along the 50-fathom curve Y d. about 20 miles east of Jupiter Inlet 2423: IN REGION A of the IALA Buoyage System, when entering from seaward, the starboard side of a channel would be marked by a __________.
N a. red conical buoy Y b. green conical buoy N c. red can buoy N d. green can buoy 2514: Sidereal time is NOT used __________.
N a. as the basis for star charts N b. to enter a star finder N c. in sight reduction using Pub 249 Y d. in sight reductions of planet observations 2592: A deadhead is a(n) __________.
Y a. tree or log awash in a nearly vertical position N b. crew member who refuses to work N c. upstream end of a land wall N d. buoy that is adrift 2656: What is the equivalent of 0 min. 16 sec. in arc units?
N a. 0°32' N b. 0°16' Y c. 0°04' N d. 0°01' 2672: When you are steering on a pair of range lights and find the upper light is in line above the lower light, you should __________.
Y a. continue on the present course N b. come left N c. come right N d. wait until the lights are no longer in a vertical line 2722: The paths of intended travel between three or more points is the __________.
N a. course Y b. track N c. bearing N d. course over the ground 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° 2838: You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?
N a. 001° Y b. 069° N c. 209° N d. 356° 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. 2930: How is a navigation light identified on an Army Corps of Engineers navigation map?
N a. Name and light characteristic Y b. Name and miles from a reference point N c. Light characteristic and miles A.H.P. N d. None of the above 2952: The channel under a bridge is marked with lights of the lateral system. The centerline of the channel shall be marked on the bridge by __________.
Y a. an occulting white light N b. a yellow light N c. three fixed white lights N d. a flashing blue light 3022: A green-and-red banded daymark, green band uppermost, will have the shape shown at letter __________. (D045NG )
Y a. A N b. B N c. C N d. D 3030: Isogonic lines are lines on a chart indicating __________.
Y a. points of equal variation N b. points of zero variation N c. the magnetic latitude N d. magnetic dip 3041: The letter H in illustration D006NG represents the __________.
N a. refractive horizon N b. geoidal horizon N c. celestial horizon Y d. visible horizon 3108: Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.
N a. navigation status N b. ship's heading Y c. port of origin N d. time stamp