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.
7: The period at high or low tide during which there is no change in the height of the water is called the __________.
N a. range of the tide N b. plane of the tide Y c. stand of the tide N d. reversing of the tide 115: The date is the same all over the world at __________.
N a. 0000 GMT Y b. 1200 GMT N c. 0000 LMT for an observer at 90°E longitude N d. no time 139: What is the geographic longitude of a body whose GHA is 215°15'?
N a. 35°15'W N b. 35°15'E Y c. 144°45'E N d. 144°45'W 159: The apparent wind can be zero when the true wind is from __________.
N a. ahead and equal to the ship's speed Y b. astern and equal to the ship's speed N c. ahead and equal to twice the ship's speed N d. astern and equal to twice the ship's speed 168: Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 20 minutes. What current are you experiencing?
N a. A following current at 2.0 knots N b. A head current of 2.0 knots Y c. A following current of 0.9 knot N d. A head current of 0.9 knot 193: In using Loran-C, skywave reception gives greater range but is __________.
N a. only accurate during daylight hours Y b. much less accurate N c. only accurate at twilight N d. more accurate than using ground waves 197: Chart legends printed in capital letters show that the associated landmark is __________.
Y a. conspicuous N b. inconspicuous N c. a government facility or station N d. a radio transmitter 360: The Illustration shows the symbols used on radio facsimile weather charts. The symbol indicated at letter "M" represents __________. (D042NG )
N a. rain Y b. snow N c. hail N d. ice 372: You would find the variation on a polyconic projection chart __________.
Y a. on the compass rose N b. on the mileage scale N c. written on the chart title N d. at each line of longitude 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 486: Tropical cyclones do not form within 5° of the Equator because __________.
N a. there are no fronts in that area N b. it is too hot N c. it is too humid Y d. of negligible Coriolis force 564: A hygrometer is a device used for determining __________.
N a. the absolute temperature N b. atmospheric pressure N c. wind velocity Y d. relative humidity 604: Chronometer error may be found by __________.
N a. radio time signal N b. comparison with a timepiece of known error N c. applying the prevailing chronometer rate to previous readings Y d. All of the above 614: A marine chronometer should be rewound once every __________.
N a. 12 hours Y b. day N c. 3 days N d. week 675: 15° of latitude is equal to __________.
N a. 600 miles Y b. 900 miles N c. 1200 miles N d. 1500 miles 724: Which statement concerning GPS is TRUE?
N a. It cannot be used in all parts of the world. N b. There are 12 functioning GPS satellites at present. Y c. It may be suspended without warning. N d. Two position lines are used to give a 2D fix. 755: The sidereal day begins when the __________.
N a. Sun is over the lower branch of the reference meridian N b. Sun is over the upper branch of the reference meridian N c. first point of Aries is over the lower branch of the reference meridian Y d. first point of Aries is over the upper branch of the reference meridian 781: The IALA Buoyage Systems do NOT apply to __________.
N a. the sides and centerlines of navigable channels N b. natural dangers and other obstructions, such as wrecks Y c. lighthouses and lightships N d. areas in which navigation may be subject to regulation 801: You are entering an African port and see ahead of you a red can-shaped buoy. What action should you take?
Y a. Alter course to leave the buoy to port N b. Alter course to leave the buoy to starboard N c. Pass the buoy close aboard on either side N d. Pass the buoy well clear on either side 833: The magnetic compass magnets are acted on by the horizontal component of the Earth's total magnetic force. This magnetic force is GREATEST at the __________.
N a. north magnetic pole N b. south magnetic pole N c. magnetic prime vertical meridian Y d. magnetic equator 842: Coast Pilots and navigational charts are kept corrected and up-to-date by using the __________.
N a. pilot charts Y b. Notices to Mariners N c. Tide Tables N d. Current Tables 879: You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 346°T at 68 miles from you. What is the course to steer at 13 knots to intercept vessel A?
Y a. 328° N b. 323° N c. 318° N d. 314° 907: In which month will the equatorial counter current be strongest?
N a. January N b. April Y c. August N d. October 991: You are underway in the North Sea on course 328°T when you sight a buoy broad on your port bow. You are in the best navigable water if the buoy __________.
N a. has a topmark of two cones with points down N b. is a western quadrant buoy N c. is painted yellow on the top half and black on the bottom Y d. exhibits a light with the characteristic of VQ(3)5s 1005: The refraction correction table given in the Nautical Almanac is based on a standard or average atmospheric density with a temperature of 50°F (10°C) and atmospheric pressure of __________.
N a. 29.72 inches (1006 millibars) Y b. 29.83 inches (1010 millibars) N c. 29.89 inches (1012 millibars) N d. 29.93 inches (1014 millibars) 1029: Which would be the subject of a NAVAREA warning?
N a. A drifting buoy sighted in mid-ocean N b. Extinguishment of Wolf Trap Light located inside Chesapeake Bay N c. All military exercises on the high seas involving four or more vessels Y d. Off-air times of radio beacons when scheduled for routine maintenance 1112: Considering the general circulation of the atmosphere, the wind system between latitudes 30°N and 60°N is commonly called the __________.
Y a. prevailing westerlies N b. horse latitudes N c. trade winds N d. subpolar low pressure belts 1156: When cold air displaces warm air you have a(n) __________.
Y a. cold front N b. occluded front N c. stationary front N d. warm front 1217: What will be the velocity and direction of the tidal current at Old Ferry Point, NY, at 1340 EST (ZD +5) on 5 February 1983?
N a. 0.8 knot at 060°T N b. 0.8 knot at 240°T N c. 1.0 knot at 076°T Y d. 1.4 knots at 076°T 1309: When recording the wind direction in the weather log, you would report the __________.
N a. direction the wind is blowing toward Y b. direction the wind is blowing from N c. duration of the maximum gust of wind N d. wind chill factor 1335: Plain language is usually used on marine weather __________.
Y a. forecasts N b. observations N c. analyses N d. reports 1422: Cumulus clouds are indicated by what number in illustration D039NG? (D039NG )
N a. 3 N b. 5 N c. 6 Y d. 7 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 1452: When is the rhumb line distance the same as the great circle distance?
N a. Course 090°T in high latitudes Y b. Course 180°T when you cross the equator N c. Course 045°T in low latitudes N d. The rhumb line distance is always longer than the great circle distance. 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 1550: Cirrus clouds are indicated by which number? (D039NG )
Y a. 1 N b. 4 N c. 5 N d. 7 1582: Sextant C in illustration D043NG reads __________. (D043NG )
N a. 30°45.9' N b. 29°56.0' N c. 29°52.0' Y d. 29°47.5' 1613: Where would you find information concerning the duration of slack water?
N a. Tide Tables Y b. Tidal Current Tables N c. American Practical Navigator N d. Sailing Directions 1655: Yesterday your chronometer read 11h 59m 59s at the 1200 GMT time tick. Today the chronometer reads 11h 59m 57s at the 1200 time tick. What is the chronometer rate?
N a. +2s Y b. -2s N c. -3s N d. +3s 1908: What is the brightest navigational planet?
N a. Saturn N b. Jupiter N c. Mars Y d. Venus 1936: The parallel of latitude at 66°33'N is the __________.
N a. Tropic of Cancer N b. Tropic of Capricorn Y c. Arctic Circle N d. ecliptic 1936: The parallel of latitude at 66°33'N is the __________.
N a. Tropic of Cancer N b. Tropic of Capricorn Y c. Arctic Circle N d. ecliptic 1941: 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 can buoy N b. red conical buoy N c. green can buoy Y d. green conical buoy 1968: The Earth has the shape of a(n) __________.
N a. sphere Y b. oblate spheroid N c. spheroid of revolution N d. oblate eggoid 2159: Induced magnetism is found in __________.
N a. hard iron Y b. soft iron N c. vertical iron only N d. horizontal iron only 2254: A rock and sand structure extending from the bank of the river toward the channel is known as a __________.
Y a. wingdam N b. towhead N c. cutoff N d. landwall 2304: The Moon is subject to four types of libration. Which of the following is NOT one of these types of libration?
N a. Libration in longitude N b. Diurnal libration Y c. Vertical libration N d. Libration in latitude 2346: The first point of Aries is the point where the Sun is at __________.
N a. maximum declination north N b. maximum declination south Y c. 0° declination going to northerly declinations N d. 0° declination going to southerly declinations 2372: In the North Sea area, you sight a buoy showing a quick white light showing 6 flashes followed by one long flash at 15 second intervals. Which of the four topmarks illustrated in diagram D031NG would be fitted to this buoy? (D031NG )
N a. A N b. B Y c. C N d. D 2483: A white buoy with an orange rectangle on it is used to indicate __________.
Y a. general information N b. an exclusion area N c. danger N d. a controlled area 2484: What is the equivalent of 1°53' in time units?
N a. 3 min. 16 sec. N b. 5 min. 28 sec. N c. 6 min. 43 sec. Y d. 7 min. 32 sec. 2529: A bridge over a navigable waterway is being repaired. There is a traveler platform under the bridge's deck that significantly reduces the vertical clearance. If required by the CG district commander, how will this be indicated at night?
N a. Illumination by flood lights Y b. A quick flashing red light at each lower corner N c. A strobe light visible both up and downstream N d. Fixed amber lights under the extreme outer edges of the traveler 2614: What is the equivalent of 4°36' in time units?
N a. 9 min. 12 sec. N b. 14 min. 36 sec. N c. 15 min. 36 sec. Y d. 18 min. 24 sec. 2730: When attempting an upstream landing while pushing empty barges ahead in a hard onshore wind, the approach is best made __________.
Y a. with bow out, stern in N b. with bow in, stern out N c. parallel to the dock, as close in as possible N d. parallel to the dock, as far out as possible 2762: You take a bearing of 176° of a lighthouse. Which bearing of another object would give the best fix?
Y a. 079° N b. 151° N c. 176° N d. 292° 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) 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 3011: The survey information upon which a chart is based is found __________.
N a. at the top center of the next line Y b. near the chart title N c. at the lower left corner N d. at any convenient location 3073: ECDIS must give an alarm for which of the following cases?
Y a. If the ship is going to reach a critical point on the planned route N b. When the speed of a dangerous target exceeds a set limit N c. If the ship's ETA has changed beyond the set limit N d. All of the above 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