Q182 - Navigation General: Near Coastal, USCG prep certification 2026

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1. A magnetic compass card is marked in how many degrees?Not learned 2. At 0000 you fix your position and plot a new DR track line. At 0200 you again fix your position, and it is 0.5 mile east of your DR. Which statement is TRUE?Not learned 3. According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northwest wind, where is the center of low pressure located?Not learned 4. According to Buys Ballot's Law, when an observer in the Southern Hemisphere experiences a northwest wind, where is the center of the low pressure located?Not learned 5. What will act to dissipate fog?Not learned 6. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 7. What agency of the U.S. Government issues charts of U.S. waters and Coast Pilots?Not learned 8. Which aid is NOT marked on a chart with a magenta circle?Not learned 9. An air mass that has moved down from Canada would most likely have which symbols?Not learned 10. Which is TRUE of an alternating light?Not learned 11. How are altocumulus clouds defined?Not learned 12. You are anchored in the Aleutian Island chain and receive word that a tsunami is expected to strike the islands in six hours. What is the safest action?Not learned 13. What is the approximate geographic range of Point Judith Light, Rhode Island, if your height of eye is 62 feet (18.9 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". (use charted range of 20 miles as nominal range)Not learned 14. What is the approximate geographic visibility of an object with a height above the water of 70 feet, for an observer with a height of eye of 65 feet?Not learned 15. Your ARPA has two guard zones. What is the purpose of the inner guard zone?Not learned 16. Ascending and descending air masses with different temperatures is part of an important heat transmitting process in our atmosphere. Which term is given to this process?Not learned 17. What is the average speed of movement of a hurricane prior to recurvature?Not learned 18. To avoid error, how should you read the scale of an aneroid barometer?Not learned 19. The Beaufort scale is used to estimate which element of the weather?Not learned 20. Which best defines current?Not learned 21. How are buoys which mark isolated dangers painted?Not learned 22. Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic?Not learned 23. Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE?Not learned 24. What causes permanent magnetism on a vessel?Not learned 25. What is a characteristic of cardinal marks?Not learned 26. Which characteristic and color will a preferred-channel buoy show?Not learned 27. Which characteristics will a lighted buoy that is to be left to starboard, when entering a U.S. port from seaward have?Not learned 28. Which is a characteristic of a port side daymark?Not learned 29. Which is a characteristic of the weather preceding an approaching warm front?Not learned 30. A chart has extensive corrections to be made to it. When these are made and the chart is again printed, what term is given to this chart issue?Not learned 31. The chart indicates the variation was 3°45'E in 1988, and the annual change is increasing 6'. If you use the chart in 1991 how much variation should you apply?Not learned 32. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 33. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 34. Which cloud is described as a low, dark, sheet-like cloud which is associated with continuous precipitation for many hours?Not learned 35. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 36. When cold air displaces warm air, you have which type of front?Not learned 37. What color lights do lighted information markers display?Not learned 38. What are the colors of a mid-channel daymark?Not learned 39. What is a common unit of measure for atmospheric pressure?Not learned 40. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 41. Which condition(s) is(are) necessary for the formation of dew?Not learned 42. By convention, the Earth's south magnetic pole is which color?Not learned 43. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 44. You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?Not learned 45. You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 46. You are on course 222°T and take a relative bearing of a lighthouse of 025°. What is the true bearing to the lighthouse?Not learned 47. If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?Not learned 48. If the current and wind are in opposite directions, what does the sea surface indicate?Not learned 49. The most dangerous form of icing encountered at sea is formed by which of the following?Not learned 50. Which term is given to the database resulting from (1) the transformation of the electronic navigational chart (ENC) by ECDIS for appropriate use, (2) the updates to the ENC by appropriate means, and (3) the additional data added by the mariner?Not learned 51. Which daymark has no lateral significance?Not learned 52. Which is TRUE of a dead reckoning (DR) plot?Not learned 53. Which defines the term relative humidity?Not learned 54. What describes an accurate position that is NOT based on any prior position?Not learned 55. Which describes the level of database information which cannot be removed from the ECDIS display and consists of information which is required at all times in all geographic areas and under all circumstances?Not learned 56. It is desirable that a vessel encountering hurricane or typhoon conditions sends weather reports to the closest meteorological service at which time interval?Not learned 57. The dew point is reached when which condition occurs?Not learned 58. Which is TRUE for the directive force acting on a gyrocompass?Not learned 59. How are the doldrums characterized?Not learned 60. A Doppler speed log indicates speed through the water __________.Not learned 61. The dry-bulb temperature is 78°F (26°C) and the wet-bulb temperature is 68°F (20°C). What is the relative humidity?Not learned 62. ECDIS must give an alarm for which of the following cases?Not learned 63. ECDIS units incorporate Digital Chart Data that utilizes which formats?Not learned 64. When does the effects of priming of the tides occur?Not learned 65. 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?Not learned 66. 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 and running time at 13 knots to intercept vessel A?Not learned 67. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 68. When entering from seaward, what does a buoy displaying a composite group (2+1) flashing red light indicate?Not learned 69. What can be expected with the presence of stratus clouds and a dying wind?Not learned 70. What does the expression "the air is saturated" mean?Not learned 71. Which is a feature of a special daymark?Not learned 72. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 73. What does the Flinders bar on a magnetic compass compensate for?Not learned 74. Fog forms when the air temperature is at or below __________.Not learned 75. How can you follow the approach of a dangerous cyclonic storm?Not learned 76. Which of the following data layer categories is NOT displayed on ECDIS?Not learned 77. In general, on how many radio channels will an automatic identification system (AIS) operate?Not learned 78. The greater the pressure difference between a high and a low-pressure center, the __________.Not learned 79. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 80. Red lights may appear on which buoys?Not learned 81. What is the gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction?Not learned 82. What happens to the intensity of a hurricane as it reaches higher latitudes and cooler waters?Not learned 83. You are heading out to sea in a buoyed channel and see a quick flashing green light on a buoy ahead of you. In U.S. waters, how should you leave the buoy?Not learned 84. Which is TRUE when a high pressure system is centered north of your vessel in the Northern Hemisphere?Not learned 85. Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be which color?Not learned 86. Under the IALA-B Buoyage System, which is TRUE of a conical buoy?Not learned 87. In the IALA Buoyage System, what do buoys with alternating red and green horizontal bands indicate?Not learned 88. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 89. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 90. Under the IALA Buoyage Systems, which is TRUE of safe water marks?Not learned 91. Under the IALA cardinal system, a mark with quick white light showing 3 flashes every 10 seconds indicates that the safest water in the area is in which location?Not learned 92. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?Not learned 93. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 94. In illustration D039NG below, what type of cloud is indicated by the number one?Not learned 95. In illustration D051NG below what is indicated by the position labeled "C"?Not learned 96. Which is the most important information to be obtained from a barometer?Not learned 97. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 98. Which indication on the barometer is most meaningful in forecasting weather?Not learned 99. Which of the sources contains information on Northern Right Whales?Not learned 100. Information about the pilotage available at Miami harbor may best be obtained from which publication?Not learned 101. How are you informed of defects or changes in aids to navigation?Not learned 102. Which instrument is used to measure the relative humidity of the air?Not learned 103. Isobars on a weather map are useful in predicting which element of the weather?Not learned 104. What do isogonic lines on a chart indicate?Not learned 105. Which item in illustration D034NG below shows a flashing light?Not learned 106. Which is TRUE of a lateral system buoy displaying a quick flashing light?Not learned 107. A latitude line will be obtained by observing a body __________.Not learned 108. Which light characteristic may be used on a special mark?Not learned 109. Which term describes a light, feathery deposit of ice by sublimation of water vapor directly into the crystalline form on objects whose temperatures are below freezing?Not learned 110. The Light List indicates that a dayboard is a type KGW. You should take which action?Not learned 111. The Light List shows a lighted aid to navigation on the right bank. In which situation can the light be seen on the port side of a vessel?Not learned 112. 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?Not learned 113. The Light List shows that a navigational light has a nominal range of 12 miles and a height above water of 25 feet (7.6 meters). Your height of eye is 30 feet (9.1 meters) and the visibility is 0.5 mile. At what approximate range will you first sight the light?Not learned 114. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 115. Which line connects the points of zero magnetic dip?Not learned 116. Lines drawn through points on the Earth having the same atmospheric pressure are known by which term?Not learned 117. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 118. A List of Lights entry (L Fl) is a single flashing light which shows a long flash of not less than which duration?Not learned 119. How many fixed objects are needed to plot a running fix?Not learned 120. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 121. How may a spherical buoy be identified?Not learned 122. Mean lower low water is the reference plane used for which measurements?Not learned 123. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 124. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 125. A mid-channel buoy, may show which light?Not learned 126. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 127. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 128. A mooring buoy, if lighted, shows which color light?Not learned 129. The National Oceanic and Atmospheric Administration publishes which item?Not learned 130. What natural feature is responsible for the rather even climate found on the Florida peninsula throughout the year?Not learned 131. When do neap tides occur?Not learned 132. In North America, which direction do the majority of the weather systems move?Not learned 133. In the North Sea area, you sight a buoy showing an uninterrupted quick-flashing white light. Which of the four topmarks shown in illustration D031NG below will this buoy be fitted with under the IALA Buoyage system?Not learned 134. In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. Which is the best course of action to take?Not learned 135. In the Northern Hemisphere, an observer at point II in illustration D014NG below, should experience a wind shift from what direction?Not learned 136. In the Northern hemisphere which semicircle of a hurricane is the navigable semicircle?Not learned 137. In the Northern Hemisphere, swells that have outrun the storm are produced in which location?Not learned 138. 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?Not learned 139. How can Northern right whales can be identified?Not learned 140. What does the numeral in the center of a wind rose circle on a pilot chart indicate?Not learned 141. If you observe a rapid fall of barometric pressure, which action should you take?Not learned 142. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 143. You have been observing your radar screen and notice that a contact on the screen has remained in the same position, relative to you, for several minutes. Your vessel is making 10 knots through the water. Which statement is TRUE?Not learned 144. What occurs when rising air cools to the dew point?Not learned 145. Which term defines the ocean bottom that extends from the shoreline out to an area where there is a marked change in slope to a greater depth?Not learned 146. When operated over a muddy bottom, a fathometer may indicate which of the following?Not learned 147. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 148. An orange and white buoy with a rectangle on it displays what information?Not learned 149. Which organization operates the Maritime Differential GPS (DGPS)?Not learned 150. The path that a vessel is expected to follow, represented on a chart by a line drawn from the point of departure to the point of arrival, is known by which term?Not learned 151. You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?Not learned 152. 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?Not learned 153. On the pole side of the high-pressure belt in each hemisphere, the pressure diminishes. The winds along these gradients are diverted by the Earth's rotation toward the east. What is the name of these winds?Not learned 154. Which position includes the effects of wind and current?Not learned 155. How do preferred channel buoys indicate the preferred channel to transit?Not learned 156. Pressure gradient is a measure of __________.Not learned 157. What is the primary source of the earth's weather?Not learned 158. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 159. You are proceeding up a channel at night. It is marked by a range which bears 185°T. You steady up on a compass course of 180° with the range in line dead ahead. This indicates that you(r) __________.Not learned 160. Which radar control reduces weak echoes out to a limited distance from the ship?Not learned 161. Which radar control shortens all echoes on the display and reduces clutter caused by rain or snow?Not learned 162. Which is TRUE of Raster-scan chart data?Not learned 163. What is the reaction of a gyrocompass to an applied force known as?Not learned 164. What do red sectors of navigation lights warn mariners of?Not learned 165. Which is the region containing 3/4 of the mass of the atmosphere and to which are confined such phenomena as clouds, storms, precipitation and changing weather conditions?Not learned 166. What is the relative bearing of an object on the port beam?Not learned 167. What is the relative bearing of an object broad on the port bow?Not learned 168. You have replaced the chart paper in the course recorder. Which statement is TRUE?Not learned 169. With respect to a reversing current, when does slack water occur?Not learned 170. What results when warm moist air blows over a colder surface and is cooled below its dew point?Not learned 171. Safe water buoys may show ONLY which type of light?Not learned 172. How is a safe water mark, that can be passed close aboard on either side, painted and lighted?Not learned 173. If several navigational lights are visible at the same time, each one may be positively identified by checking all of the following EXCEPT what against the Light List?Not learned 174. The shoreline shown on nautical charts of areas affected by large tidal fluctuations is usually the line of mean __________.Not learned 175. You sight a buoy fitted with a double-sphere topmark. If sighted at night, what color and light sequence would you expect to see?Not learned 176. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 177. What is a sling psychrometer used to measure?Not learned 178. What does a slow rise in the barometric pressure forecast?Not learned 179. In which source could you find the number of a chart for a certain geographic area?Not learned 180. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 181. Which statement concerning current is TRUE?Not learned 182. Which statement about the Flinders bar of the magnetic compass is CORRECT?Not learned 183. Which statement about a gnomonic chart is correct?Not learned 184. Which statement about gyrocompass error is TRUE?Not learned 185. Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?Not learned 186. While steaming on course 280°T, you sight a buoy showing a very quick flashing (VQ) white light well to port. Maintaining course, you sight another buoy showing a quick flashing (Q) white light. How should you pass?Not learned 187. You are steaming west in the South Atlantic in an extratropical cyclonic storm, and the wind is dead ahead. According to the law of Buys Ballot, where does the center of low pressure lie?Not learned 188. You are steaming in the open ocean of the North Pacific between the Aleutian Chain and Hawaii. A warning broadcast indicates that an earthquake has occurred in the Aleutians and has generated a tsunami that is predicted to hit Hawaii. What action is necessary for the ship's safety?Not learned 189. 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?Not learned 190. While steering a course of 150°T, you wish to observe a body for a latitude check. What would the azimuth have to be?Not learned 191. While steering a course of 150°T, you wish to observe the Sun for a speed check. What would the azimuth have to be?Not learned 192. When you are steering on a pair of range lights and find the upper light is in line above the lower light, you should take which action?Not learned 193. You are steering a southerly course, and you note that the chart predicts an easterly current. Without considering wind, how may you allow for the set?Not learned 194. What is a system of reservoirs and connecting tubes in a gyro compass called?Not learned 195. Which table is NOT found in the U.S. Coast Pilots?Not learned 196. You take a bearing of 086° of a lighthouse. What bearing of another object would give the best fix?Not learned 197. You take a bearing of 191° and 313° to two objects. Which bearing of a third object will give the best fix?Not learned 198. While taking weather observations, you determine that the wind is coming from the west. In the weather log, how would you record the wind direction?Not learned 199. Which is TRUE as the temperature of the air reaches the dew point?Not learned 200. Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?Not learned 201. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 202. Which term refers to the direction a current is flowing?Not learned 203. Which term is used to describe a generally circular low-pressure area?Not learned 204. Which term is used to describe the time interval between successive wave crests?Not learned 205. Which term is used to describe the wind speed and direction observed from a moving vessel?Not learned 206. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 207. Which is TRUE of the tides in Boston Harbor?Not learned 208. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 209. On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to voluntary Naval Cooperation and Guidance for Shipping (NCAGS). Where can further information be located?Not learned 210. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 211. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which months?Not learned 212. Which is TRUE concerning Hot air?Not learned 213. Which is TRUE concerning the magnetic information on a chart?Not learned 214. Which is TRUE of the direction of flow (channel) on the Corps of Engineer's Navigation Maps?Not learned 215. Which is TRUE of echo-sounders?Not learned 216. Which is TRUE of a preferred-channel buoy?Not learned 217. Which is TRUE of a special mark?Not learned 218. Which is TRUE why Tropical cyclones do not form within 5° of the Equator?Not learned 219. What type of clouds are associated with a cold front?Not learned 220. Which type of cloud is hail most likely to fall from?Not learned 221. In the U.S. Aids to Navigation System, lateral aids as seen entering from seaward will display lights with which characteristic?Not learned 222. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 223. You are underway on course 328°T when you sight a buoy broad on your port bow. Which would indicate that you are in the best navigable water?Not learned 224. You are underway in the North Sea on course 216°T when you sight a buoy bearing 021° relative. Under the IALA Buoyage System, you are in the best navigable water if the buoy has which of the following characteristics?Not learned 225. You are underway and pass by a lighthouse. Its light, which was white since you first sighted it, changes to red. What does this indicate?Not learned 226. While underway vessels equipped with an automatic identification system (AIS) are required to transmit specific information at varying intervals. What information contained in a class A unit broadcast is only required to be transmitted every six minutes?Not learned 227. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 228. When using horizontal sextant angles of three objects to fix your position, an indeterminate position will result in which situation?Not learned 229. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 230. The velocity of a rotary tidal current will be decreased when the Moon is at which phase?Not learned 231. The velocity of the wind, its steady direction, and the amount of time it has blown determines what about a wind driven current?Not learned 232. Your vessel is on course 180°T speed 22 knots. The apparent wind is from 70° off the port bow, speed 20 knots. What are the true direction and speed of the wind?Not learned 233. Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weather condition?Not learned 234. When your vessel is on the storm track but behind the storm's center the __________.Not learned 235. While on watch, you notice that the air temperature is dropping and is approaching the dew point. Which type of weather should be forecasted?Not learned 236. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 237. Weather forecast messages are usually __________.Not learned 238. A weather forecast states that the wind will commence veering. In the Northern Hemisphere, what changes will occur?Not learned 239. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 240. Weather observations provided by each weather station include all of the following except which item?Not learned 241. Weather patterns in the Gulf of Mexico area of the United States are _____.Not learned 242. What does a white buoy with an open-faced orange diamond on it indicate?Not learned 243. What does a white buoy with an orange circle marked on it indicate?Not learned 244. White lights may be found on which buoys?Not learned 245. Where would you obtain data on currents for areas of the world not covered by the U.S. National Ocean Service?Not learned 246. Yellow lights may appear on which buoys?Not learned 247. What is the difference between magnetic heading and compass heading called?Not learned 248. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 249. The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 40 feet (12.2 meters). Your height of eye is 25 feet (7.6 meters) and the visibility is 5 miles. At about what range will you FIRST sight the light?Not learned 250. The luminous range of a light takes into account which factor?Not learned 251. The Light List shows that a navigational light has a nominal range of 22 miles and a height above water of 48 feet (14.6 meters). Your height of eye is 35 feet (10.7 meters) and the visibility is 20.0 miles. At what approximate range will you first sight the light?Not learned 252. Determine the approximate geographic visibility of an object, with a height above the water of 85 feet (25.9 meters), for an observer with a height of eye of 60 feet (18.3 meters).Not learned 253. The Light List indicates that a light has a nominal range of 14 miles and is 42 feet (12.7 m) high. If the visibility is 16 miles and your height of eye is 20 feet (6.1 m), at which approximate distance will you sight the light?Not learned 254. The Light List shows that a navigational light has a nominal range of 15 miles and a height above water of 29 feet (8.8 meters). Your height of eye is 52 feet (15.8 meters) and visibility is 6.0 miles. At which approximate range will you first sight the light?Not learned 255. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned 256. The Light List shows that a navigational light has a nominal range of 17 miles and a height above water of 28 feet (8.5 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 11.0 miles. At what approximate range will you first sight the light?Not learned