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.
30: When taking an amplitude, the Sun's center should be observed on the visible horizon when __________.
Y a. in high latitudes N b. the Sun is near or at a solstice N c. the declination is of a different name from the latitude N d. the Sun's declination is at or near 0° 58: You should plot your dead reckoning position __________.
N a. at every course change N b. hourly N c. at every speed change Y d. All of the above are correct. 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 140: You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 080°T, 100 miles from your position. The hurricane is moving towards 265°T at 22 knots. If you maneuver at 12 knots to avoid the hurricane, what could be the maximum CPA?
N a. 76 miles N b. 69 miles Y c. 63 miles N d. 56 miles 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 259: The Illustration shows the symbols used on radio facsimile weather charts. The symbol indicated at letter "Q" represents a __________. (D042NG )
N a. convergence zone N b. squall line Y c. convergence line N d. weather boundary 311: You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. The buoy should be left on __________.
N a. the vessel's starboard side Y b. the vessel's port side N c. either side close aboard N d. either side well clear 370: Prevailing winds between 30°N and 60°N latitude are from the __________.
N a. north N b. south N c. east Y d. west 370: Prevailing winds between 30°N and 60°N latitude are from the __________.
N a. north N b. south N c. east Y d. west 386: Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. The true direction and speed of the wind are __________.
N a. 45°T, 21.0 knots Y b. 51°T, 24.0 knots N c. 58°T, 21.2 knots N d. 64°T, 26.0 knots 437: Your vessel will be docking at Chester, PA, during the evening of 22 April 1983. The chart shows a depth of 20 feet (6.1 meters) at the pier. What will be the depth of water available at 1856 EST (ZD +5)?
N a. 22.4 feet (6.8 meters) Y b. 23.4 feet (7.2 meters) N c. 24.9 feet (7.6 meters) N d. 25.7 feet (7.8 meters) 441: A yellow buoy may exhibit a(n) __________.
N a. fixed red light Y b. flashing light N c. white light N d. occulting light 466: In the relatively calm area near the hurricane center, the seas are __________.
N a. moderate but easily navigated N b. calm Y c. mountainous and confused N d. mountainous but fairly regular as far as direction is concerned 703: Which statement concerning the operation of radar in fog is TRUE?
N a. Radar ranges are less accurate in fog. N b. Navigation buoys will always show up on radar. N c. A sandy beach will show up clearer on radar than a rocky cliff. Y d. Small wooden boats may not show up on radar. 722: Which publication would describe the explosive anchorages in the ports on the east coast of the United States?
N a. Sailing Directions N b. Pilot Rules for Inland Waters Y c. Coast Pilot N d. Notice to Mariners 791: Under the IALA Buoyage Systems, the topmark of a red and white vertically-striped buoy shall be __________.
N a. X-shaped N b. two black spheres Y c. a single red sphere N d. a single red cone 834: In many areas "atoll" clouds (clouds of vertical development) are produced over small islands. These are the result of __________.
Y a. rising air currents produced by the warm islands N b. warm air from the sea rising over higher land areas N c. cool land air mixing with warm sea air N d. descending air over the islands 950: Where is the dangerous semicircle located on a hurricane in the Southern Hemisphere?
Y a. To the left of the storm's track N b. To the right of the storm's track N c. In the high pressure area N d. On the south side 998: The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?
N a. Rear N b. Front N c. Left Y d. Right 1138: On approaching the English Channel on course 080°T, you note the symbol YBY near a charted buoy. You must pass __________.
N a. northward of the buoy N b. southward of the buoy N c. eastward of the buoy Y d. westward of the buoy 1184: Your position X is at LAT 35°S. Which winds are you experiencing? (D009NG )
Y a. Northeasterly N b. Northwesterly N c. Southeasterly N d. Southwesterly 1273: Deviation changes with a change in __________.
N a. latitude Y b. heading N c. longitude N d. sea conditions 1284: The Sailing Directions (Enroute) contain information on all of the following EXCEPT __________.
Y a. ocean currents N b. outer dangers to navigation N c. tidal currents N d. major port anchorages 1285: You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the time to intercept if you make 13 knots?
N a. 4h 55m N b. 4h 36m N c. 3h 59m Y d. 3h 44m 1337: What will be the time of maximum flood current at Sagamore Bridge on the Cape Cod Canal during the morning of 6 December 1983 (ZD +5)?
Y a. 0708 N b. 0712 N c. 0716 N d. 1020 1338: Which type of cloud is indicated by the number 6? (D039NG )
N a. Altocumulus Y b. Stratocumulus N c. Altostratus N d. Cirrus 1374: On a working copy of a weather map, a warm front is represented by what color line?
Y a. Red N b. Blue N c. Alternating red and blue N d. Purple 1406: What will act to dissipate fog?
N a. Upwelling cold water N b. Advection of warm air over a colder surface N c. Rain that is warmer than air Y d. Downslope motion of an air mass along a coast 1406: What will act to dissipate fog?
N a. Upwelling cold water N b. Advection of warm air over a colder surface N c. Rain that is warmer than air Y d. Downslope motion of an air mass along a coast 1510: During daylight savings time the meridian used for determining the time is located farther __________.
N a. west Y b. east N c. east in west longitude and west in east longitude N d. west in west longitude and east in east longitude 1515: An aneroid barometer on a boat should always be __________.
N a. located in an air-conditioned area N b. mounted in the passenger compartment N c. protected by a collision bulkhead Y d. permanently mounted 1516: Which correction(s) must be applied to an aneroid barometer?
Y a. Instrument error and height error N b. Instrument error only N c. Height error only N d. Instrument error and latitude correction 1522: The pressure-sensitive element of an aneroid barometer is called a __________.
N a. pressure bellows Y b. sylphon cell N c. column of mercury N d. constant pressure capsule 1611: What indicates a dual purpose buoy?
N a. Red buoy with a horizontal yellow band N b. Red and white vertically-striped buoy with a vertical yellow stripe N c. Red and white vertically-striped buoy with a red spherical topmark Y d. Green buoy with a yellow square 1625: A sling psychrometer is used to measure __________.
N a. seawater temperature N b. engine temperature Y c. dry bulb and wet bulb temperatures N d. barometric pressure 1673: Information about currents on the Pacific Coast of the U. S. is found in the __________.
N a. Nautical Almanac Y b. Tidal Current Tables N c. Ocean Current Tables N d. Tide Tables 1680: A weather front exists when __________.
N a. air masses of the same temperature meet Y b. air masses of different temperatures meet N c. many clouds create a differential in air density N d. two lows are separated by a ridge of higher pressure 1681: You can expect frontal activity when two air masses collide and __________.
N a. their barometric pressures and temperatures are the same N b. there are differences in how they track along the jet stream N c. there are no significant differences between their temperatures and moisture content Y d. there are significant differences between the temperature of each air mass 1686: Which of the following statements concerning frontal movements is TRUE?
N a. The temperature rises after a cold front passes. N b. The barometric pressure rises when a warm front passes. Y c. A cold front generally passes faster than a warm front. N d. A warm front usually has more violent weather associated with it than a cold front. 1699: In the Northern Hemisphere, when the center of a high pressure system is due east of your position, you can expect winds from the __________.
N a. south to west Y b. south to east N c. north to west N d. north to east 1706: In the Northern Hemisphere a wind is said to veer when the wind __________.
Y a. changes direction clockwise, as from north to east, etc. N b. changes direction violently and erratically N c. remains constant in direction and speed N d. changes direction counterclockwise, as from south to east, etc. 1774: Restricted areas at locks and dams are indicated by __________.
N a. flashing red lights upstream and fixed red lights downstream N b. yellow unlighted buoys Y c. signs and/or flashing red lights N d. red daymarks upstream and green daymarks downstream 1802: What is the major advantage of high altitude observations?
N a. Errors due to unusual parallax are eliminated. Y b. The same body can be used for a fix from observations separated by several minutes. N c. The declination is the only information needed from the almanac. N d. The semidiameter correction of the sextant altitude is eliminated. 1949: "Revolution" is the __________.
N a. wobbling of the Earth about its axis N b. motion of bodies in the solar system relative to the stars Y c. motion of a celestial body in its orbit N d. spinning of a celestial body about its axis 2076: You should plot your dead reckoning position __________.
Y a. from every fix or running fix N b. from every estimated position N c. every three minutes in pilotage waters N d. only in pilotage waters 2162: The new Moon cannot be seen because the Moon is __________.
N a. in the opposite direction of the Sun N b. below the horizon Y c. between the Earth and the Sun N d. at quadrature 2300: When a magnetic compass is not in use for a prolonged period of time it should __________.
Y a. be shielded from direct sunlight N b. be locked into a constant heading N c. have any air bubbles replaced with nitrogen N d. have the compensating magnets removed 2351: A position obtained by applying ONLY your vessel's course and speed to a known position is a __________.
N a. running fix N b. probable position N c. fix Y d. dead-reckoning position 2364: The immediate surroundings of what constellation contain the most first magnitude stars?
N a. Libra N b. Cassiopeia N c. Pegasus Y d. Orion 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 2609: The letter A in illustration D006NG represents the __________. (D006NG )
N a. geoidal horizon N b. celestial horizon N c. visible horizon Y d. sensible horizon 2638: A vessel crossing a river on the Western Rivers has the right of way over __________.
N a. vessels ascending the river N b. vessels descending the river N c. all vessels ascending and descending the river Y d. None of the above 2812: A line of position from a celestial observation is a segment of a __________.
Y a. circle of equal altitude N b. parallel of declination N c. parallel of altitude N d. vertical circle 2869: A pillar buoy is indicated by which letter shown in the illustration? (D044NG )
N a. A N b. B Y c. C N d. D 2880: While upbound through Memphis, the weather report on the TV news indicates that a cold front will cross western Kentucky and Tennessee the next morning. What weather should accompany this front?
N a. Light, southerly winds; high humidity and possibly fog N b. Overcast with steady, light rain or drizzle Y c. Gusting winds shifting to the northwest with thunderstorms N d. Scattered clouds with light to moderate southeasterly winds and possibly fog 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 3103: In general, on how many radio channels will an automatic identification system (AIS) operate?
N a. 1 Y b. 3 N c. 4 N d. 12 3125: Which of the following statements is TRUE regarding automatic identification systems (AIS)?
N a. AIS is designed to replace ARPA, maneuvering boards, and visual bearings as a means to ascertain the risk of collision. Y b. AIS provides near real-time information regarding another vessel's speed over ground and heading regardless of visibility. N c. AIS will not provide information on another vessel if that vessel is indistinguishable in radar sea clutter. N d. AIS can be relied upon as the sole means to determine course changes due to other AIS equipped traffic.