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.
11: A buoy having red and green horizontal bands would have a light characteristic of __________.
N a. interrupted quick flashing Y b. composite group flashing N c. Morse (A) N d. quick flashing 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 86: A weather forecast states that the wind will commence backing. In the Northern Hemisphere, this would indicate that it will __________.
N a. shift in a clockwise manner Y b. shift in a counterclockwise manner N c. continue blowing from the same direction N d. decrease in velocity 186: In the doldrums you will NOT have __________.
N a. high relative humidity N b. frequent showers and thunderstorms Y c. steep pressure gradients N d. frequent calms 235: When the equation of time is taken from the Nautical Almanac for use in celestial navigation, it is used to determine __________.
N a. zone time N b. sunrise Y c. time of local apparent noon N d. local mean time 240: 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 N b. when there is a following current Y c. at slack water N d. at flood 266: The horse latitudes are characterized by __________.
Y a. weak pressure gradients and light, variable winds N b. the formation of typhoons or hurricanes in certain seasons N c. steady winds in one direction for six months followed by wind reversal for the next six months N d. steady winds generally from the southeast in the Southern Hemisphere 268: The illustration shows the symbols used on radio facsimile weather charts. The symbol indicated at letter "L" represents a __________. (D042NG )
N a. convergence line N b. maritime air mass N c. warm front Y d. convergence zone 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 444: A sylphon cell is a part of a __________.
N a. maximum thermometer Y b. barograph N c. thermograph N d. hygrometer 469: Where are the prevailing westerlies of the Southern Hemisphere located?
N a. Between the Equator and 10° latitude N b. Between 10° and 20° latitude Y c. Between 30° and 60° latitude N d. Between 60° and 90° latitude 541: A yellow buoy may mark a(n) __________.
N a. wreck N b. shoal area Y c. anchorage area N d. middle ground 561: Buoys which mark dredging areas are painted __________.
N a. black Y b. yellow N c. green N d. red 591: White lights may be found on __________.
N a. special purpose buoys N b. preferred channel buoys Y c. information and regulatory buoys N d. numbered buoys 643: When using the radar for navigating __________.
N a. the best fix is obtained by using a tangent bearing and a range N b. and using two radar ranges for a fix, the objects of the ranges should be close to reciprocal bearings Y c. and using ranges, the most rapidly changing range should be measured last N d. and crossing a radar range of one object with the visual bearing of a second object, the two objects should be 80° to 110° apart 683: A radar contact will remain stationary on a relative motion radar display only when it is __________.
N a. on the same course as your vessel N b. at the same speed as your vessel Y c. on the same course and speed as your vessel N d. on a reciprocal course at the same speed as your vessel 687: The drift and set of tidal, river, and ocean currents refer to the __________.
N a. position and area of the current Y b. speed and direction toward which the current flows N c. type and characteristic of the current's flow N d. None of the above 691: Of the four light characteristics shown which one does NOT represent a safe water mark of the IALA Buoyage System? (D019NG )
Y a. A N b. B N c. C N d. D 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. 700: 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 N b. long swells Y c. steeper waves, closer together N d. cirrus clouds 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. 924: The form of cloud often known as "mackerel sky" which is generally associated with fair weather is __________.
N a. nimbostratus N b. stratus Y c. cirrocumulus N d. cumulonimbus 964: The thin, whitish, high clouds composed of ice crystals, popularly known as "mares' tails" are __________.
Y a. cirrus N b. cirrocumulus N c. altostratus N d. nimbostratus 972: In which source could you find the number of a chart for a certain geographic area?
N a. Chart No. 1 Y b. Catalog of Charts N c. American Practical Navigator N d. U.S. Coast Guard Light List 988: You are preparing a weather report form, WS Form B-80. One-half of the sky is covered with clouds, and the anemometer indicates that the apparent wind is from 340° relative at 14 knots. You are on course 307°T at 12.6 knots. How should you encode group Nddff? (D041NG )
N a. 53414 N b. 54013 Y c. 42205 N d. 43013 1174: Your vessel is enroute from Japan to Seattle and is located at position I on the weather map. You should experience which weather condition? (D013NG )
N a. Clear skies with warm temperatures N b. Steady precipitation N c. Overcast skies with rising temperature Y d. Thundershowers 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. 1299: What will be the time (ZD +5) of the second high tide at Weymouth Fore River Bridge, MA, on 12 November 1983?
N a. 1639 N b. 1643 N c. 1647 Y d. 1650 1384: Which type of cloud is indicated by number 9? (D039NG )
N a. Cumulus Y b. Cumulonimbus N c. Altostratus N d. Stratocumulus 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 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 1493: You are running parallel to the coast and estimate that the current is against you. In plotting a running fix using bearings from the same object on the coast, the greatest safety margin from inshore dangers will result if what speed is used to determine the fix?
Y a. Minimum speed estimate N b. Maximum speed estimate N c. Average speed estimate N d. A running fix should not be used under these conditions. 1537: Which sextant in illustration D043NG reads 29°47.5'? (D043NG )
N a. A N b. B Y c. C N d. D 1710: A gale is characterized by a wind speed of __________.
N a. 10 to 20 knots Y b. 34 to 47 knots N c. 48 to 63 knots N d. 64 to 83 knots 1752: What is the major limitation in using the Sight Reduction Tables for Air Navigation Volume I (Pub. No. 249) for star sights?
N a. More accuracy is needed for celestial observations on board ship than what is tabulated. N b. Sights must be made at even time increments to benefit from the tables. Y c. Only certain stars are included and sights must be limited to those stars. N d. Only first magnitude stars are tabulated. 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° 1812: The line of position should be plotted as a circle around the GP of the body when the Ho exceeds what minimum value?
N a. 80° N b. 83° N c. 85° Y d. 87° 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 2059: 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 E in the illustration? (D038NG )
Y a. One red light N b. Two red lights N c. Two green lights N d. Three green lights 2099: 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. Y b. Continue on course until the range is closed, then alter course to the right. N c. Immediately alter course to the right to bring the range in line. N d. Immediately alter course to 309°T. 2202: You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 276°. What action should be taken?
N a. Adjust the compass with the athwartships magnets until the compass reads 264°. Y b. Adjust the compass with the fore-and-aft magnets until the compass reads 273°. N c. Adjust the compass with the quadrantal spheres until the compass reads 270°. N d. Adjust the compass with the athwartships magnets until the compass reads 273°. 2222: By convention, the south pole of a magnet is painted __________.
N a. red Y b. blue N c. white N d. black 2296: A variable star is one that __________.
Y a. exhibits a change in magnitude N b. has a changing declination N c. is increasing in SHA N d. is also known as a red giant 2338: A group of stars which appear close together and form a striking configuration such as a person or animal is a __________.
N a. cluster N b. shower Y c. constellation N d. galaxy 2348: Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest water is on the __________.
N a. north side of the mark Y b. west side of the mark N c. east side of the mark N d. south side of the mark 2349: The summer solstice is the point where the Sun is at __________.
Y a. maximum declination north N b. maximum declination south N c. 0° declination going to northerly declinations N d. 0° declination going to southerly declinations 2506: Which is TRUE on the Western Rivers when a vessel downbound with a following current is meeting an upbound vessel?
Y a. She has the right of way only if she is a power-driven vessel. N b. She has the right of way only if she has a tow. N c. She does not have the right of way, since the other vessel is not crossing the river. N d. She must wait for a whistle signal from the upbound vessel. 2572: The dividing meridian between zone descriptions -4 and -5 is __________.
N a. 60°00'E Y b. 67°30'E N c. 75°00'E N d. 60°00'W 2583: You are in the Northern Hemisphere and a tropical wave is located 200 miles due west of your position. Where will the wave be located 24 hours later?
N a. In the same place N b. Closer and to the west N c. Closer and to the east Y d. Farther away to the west 2600: A parallel of latitude other than the equator is a __________.
N a. great circle N b. loxodromic curve Y c. small circle N d. gnomonic curve 2612: The dividing meridian between zone descriptions -7 and -8 is __________.
Y a. 112°30'E N b. 118°30'E N c. 120°00'E N d. 116°30'W 2712: A bold reef is a reef __________.
N a. with part of it extending above the water Y b. that can be detected by water turbulence N c. that drops off sharply N d. perpendicular to the current 2721: You are plotting a running fix. How many fixed objects are needed to take your lines of position from?
Y a. One N b. Two N c. Three N d. None 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 2829: A spar buoy is indicated by which letter in illustration D044NG?
N a. A Y b. B N c. C N d. D 2850: What is used to help prevent damage to barges, locks, and landings when you are locking or landing a tow?
N a. Dock cushions N b. Springers N c. Landing bars Y d. Bumpers (fenders) 2896: You are navigating in pilotage waters. The maximum time between fixes should be about __________.
N a. 5 minutes Y b. 30 minutes N c. 1 hour N d. 4 hours 2913: The Daily Memorandum contains information on __________.
N a. active weather disturbances such as hurricanes or tropical storms Y b. the latest navigational warnings N c. scheduled vessel arrivals and departures for a 24-hour period N d. water levels at river ports where run-off affects tidal heights 3036: Which daymark has no lateral significance?
N a. Square; top half green and bottom half red Y b. Black and white diamond N c. Red triangle N d. Green square 3060: What information is NOT found in the chart title?
N a. Survey information N b. Scale Y c. Date of first edition N d. Projection