Q191 - Navigation General: Oceans, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. As a vessel changes course to starboard, which is TRUE concerning the compass card in a magnetic compass?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. On 6 July, at 1000 zone time, you cross the 180th meridian steaming westward. What is your local time?Not learned 4. When adjusting a magnetic compass for error, which is TRUE concerning the deviation table?Not learned 5. Which aid is NOT marked on a chart with a magenta circle?Not learned 6. When is an air mass termed "warm"?Not learned 7. How are altocumulus clouds defined?Not learned 8. Which term is the angle measured eastward from the vernal equinox along the celestial equator often expressed in time units?Not learned 9. 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 10. Which term is given to the arc of an hour circle between the celestial equator and a point on the celestial sphere, measured northward or southward through 90°?Not learned 11. The ARPA may swap targets when automatically tracking if two targets are in which situation?Not learned 12. Your ARPA has been tracking a target and has generated the targets course and speed. The radar did not receive a target echo on its last two scans due to the weather. What should you expect under these circumstances?Not learned 13. 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 14. Which are associated with Cumulonimbus clouds?Not learned 15. What is the average speed of movement of a hurricane prior to recurvature?Not learned 16. To avoid error, how should you read the scale of an aneroid barometer?Not learned 17. Barometers are calibrated at which standard temperature?Not learned 18. What benefit is a weather bulletin to a mariner?Not learned 19. Which best defines current?Not learned 20. A body can only be observed at lower transit when __________.Not learned 21. Brief, violent showers frequently accompanied by thunder and lightning are usually associated with __________.Not learned 22. How are buoys which mark isolated dangers painted?Not learned 23. A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water is located in which quadrant?Not learned 24. In most cases, the direction of the apparent wind lies between the bow and which reference point?Not learned 25. What causes the error of collimation with regards to the four adjustments to a sextant?Not learned 26. What causes permanent magnetism on a vessel?Not learned 27. What can cause a tsunami?Not learned 28. What is a characteristic of cardinal marks?Not learned 29. Which characteristic and color will a preferred-channel buoy show?Not learned 30. What is a characteristic of a rhumb line?Not learned 31. What do chart legends printed in capital letters indicate about the associated landmark?Not learned 32. Which class of tide prevails in the greatest number of important harbors on the Atlantic Coast?Not learned 33. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 34. When cold air displaces warm air, you have which type of front?Not learned 35. What color lights do lighted information markers display?Not learned 36. What are the colors of a mid-channel daymark?Not learned 37. Which is TRUE if the compass heading and the magnetic heading are the same?Not learned 38. Which condition indicates that you are in a hurricane's dangerous semicircle in the Northern hemisphere?Not learned 39. Which condition(s) is(are) necessary for the formation of dew?Not learned 40. Which condition would most likely result in fog?Not learned 41. By convention, the Earth's south magnetic pole is which color?Not learned 42. When correcting the sextant altitude to apparent altitude you are correcting for inaccuracies in the reading and __________.Not learned 43. Which corrector will compensate for the deviation which is maximum on intercardinal compass headings?Not learned 44. You are on course 209°T. In order to check the longitude of your vessel, you should observe a celestial body on which bearing?Not learned 45. You are on course 138°T. To check the latitude of your vessel you should observe a celestial body on which bearing?Not learned 46. You are on course 312°T. To check the speed of your vessel you should observe a celestial body on which bearing?Not learned 47. 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 48. Which current is in many respects, similar to the Gulf Stream?Not learned 49. If the current and wind are in the same direction, what does the sea surface represent concern the true wind speed?Not learned 50. The most dangerous form of icing encountered at sea is formed by which of the following?Not learned 51. Where can information about the direction and velocity of rotary tidal currents be found?Not learned 52. 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 53. Which datum is used for soundings on charts of the East Coast of the United States?Not learned 54. When daylight savings time is kept, the times of tide and current calculations must be adjusted. How can this be accomplished?Not learned 55. During daylight savings time the meridian used for determining the time is located farther __________.Not learned 56. What daymark has NO lateral significance?Not learned 57. Which daymark has no lateral significance?Not learned 58. Which is TRUE of a dead reckoning (DR) plot?Not learned 59. The vertical distance from the tidal datum to the level of the water is the __________.Not learned 60. Which describes the precession of the equinoxes of the Earth?Not learned 61. Which describes the wind circulation around a high-pressure center in the Northern Hemisphere?Not learned 62. 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 63. The dew point is reached when which condition occurs?Not learned 64. Which is the difference between the DR position and a fix, both of which have the same time?Not learned 65. The difference of latitude (l) between the geographic position (GP) of a celestial body and your position, at the time of upper transit, is represented by __________.Not learned 66. What is the difference in local time between an observer on 114°W and one on 119°W?Not learned 67. Which is TRUE for the directive force acting on a gyrocompass?Not learned 68. Which is the dividing meridian between zone descriptions -7 and -8?Not learned 69. A Doppler speed log indicates speed through the water __________.Not learned 70. When drawing a weather map and an isobar crosses a front, the isobar is drawn __________.Not learned 71. 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 72. ECDIS must give an alarm for which of the following cases?Not learned 73. You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T, 68 miles from you. What is the time to intercept if you make 13 knots?Not learned 74. 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 75. 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 76. You are entering an African port and see ahead of you a red can-shaped buoy. What action should you take?Not learned 77. The equation of time is 12m 00s and the mean Sun is ahead of the apparent Sun. If you are on the central meridian of your time zone, at what zone time will the apparent Sun cross the meridian?Not learned 78. What can be expected with the presence of stratus clouds and a dying wind?Not learned 79. What does the expression "the air is saturated" mean?Not learned 80. Which is a feature of a special daymark?Not learned 81. You will find daily information about the duration of slack water in a port on the Atlantic Coast in which publication?Not learned 82. Which is TRUE concerning a first magnitude star?Not learned 83. Fog forms when the air temperature is at or below __________.Not learned 84. How can you follow the approach of a dangerous cyclonic storm?Not learned 85. Which of the following is the most accurate method of determining gyrocompass error while underway?Not learned 86. Which of the following data layer categories is NOT displayed on ECDIS?Not learned 87. General information about the location, characteristics, facilities, and services for U.S. and foreign ports may be obtained from which publication?Not learned 88. In general, on how many radio channels will an automatic identification system (AIS) operate?Not learned 89. At about GMT 1436, on 3 December, the lower limb of the Moon is observed with a sextant having an index error of 2.5' on the arc. The height of eye is 32 feet. The sextant altitude (hs) is 3°38.8'. What is the observed altitude?Not learned 90. A great circle crosses the equator at 141°E. It will also cross the equator at what other longitude?Not learned 91. A great circle will intersect the equator at how many degrees of longitude apart?Not learned 92. When is the greatest directive horizontal force exerted on the magnetic compass of a vessel?Not learned 93. If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?Not learned 94. What is the gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction?Not learned 95. What happens to the barometric pressure after a cold front passes?Not learned 96. What happens to the intensity of a hurricane as it reaches higher latitudes and cooler waters?Not learned 97. The height of a light is measured from which reference plane?Not learned 98. In the horizon system of coordinates what is equivalent to the declination of the equator system?Not learned 99. In the horizon system of coordinates what is equivalent to the equator on the Earth?Not learned 100. In the horizon system of coordinates what is equivalent to the poles on the Earth?Not learned 101. Under the IALA-B Buoyage System, when entering from seaward, a buoy that should be left to port will be which color?Not learned 102. In the IALA Buoyage System, what do buoys with alternating red and green horizontal bands indicate?Not learned 103. Under the IALA-A Buoyage System, a buoy indicating the preferred channel is to port would have __________.Not learned 104. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 105. Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe watermark?Not learned 106. Under the IALA Buoyage Systems, which is TRUE of safe water marks?Not learned 107. Illustration D011NG below represents the geographic location of a vessel and the radar presentation at the same time. Which statement is TRUE?Not learned 108. In illustration D039NG below, what type of cloud is indicated by the number one?Not learned 109. You are inbound in a channel marked by a range. The range line is 216°T. You are steering 213°T and have the range in sight as shown in illustration D048NG below. Which action should you take?Not learned 110. What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?Not learned 111. What information is NOT found in the chart title?Not learned 112. Which information does the outer ring of a compass rose on a nautical chart provide?Not learned 113. Information about the pilotage available at Miami harbor may best be obtained from which publication?Not learned 114. How are you informed of defects or changes in aids to navigation?Not learned 115. What is used to measure wind velocity?Not learned 116. At which interval should a traditional spring driven marine chronometer be rewound?Not learned 117. On an isomagnetic chart, which term is used for the line of zero variation?Not learned 118. Which item in illustration D034NG below shows a flashing light?Not learned 119. The largest waves (heaviest chop) will usually develop where the wind blows __________.Not learned 120. A latitude line will be obtained by observing a body __________.Not learned 121. Which level of accuracy can be obtained utilizing the U.S. Coast Guard's Maritime Differential GPS in an established coverage area?Not learned 122. Which light characteristic may be used on a special mark?Not learned 123. Which light characteristic may be used on a special purpose mark?Not learned 124. 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 125. Which is TRUE concerning Light Lists for coastal waters?Not learned 126. The Light List indicates that a dayboard is a type KGW. You should take which action?Not learned 127. 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 128. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 129. Which line connects the points of zero magnetic dip?Not learned 130. The line of position determined from a sight with an observed altitude (Ho) of 88°45.0' should be __________.Not learned 131. The line of position should be plotted as a circle around the GP of the body when the Ho exceeds what minimum value?Not learned 132. Which term is given to a line on a weather chart connecting places which have the same barometric pressure?Not learned 133. 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 134. Which of the listed properties does warm air possess?Not learned 135. Some locations maintain a zone time of -13. What are the zone time and date if the Greenwich time and date are 0152, 10 January?Not learned 136. Your longitude is 179°59'W. The LMT at this longitude is 23h 56m on the 4th day of the month. Six minutes later, your position is 179°59'E longitude. What is your LMT and date?Not learned 137. What is the longitude of the geographical position of a body whose Greenwich hour angle is 210°30'?Not learned 138. At the magnetic equator there is no induced magnetism in the vertical soft iron because __________.Not learned 139. The magnitude of three stars is indicated. Which star is the brightest?Not learned 140. How many fixed objects are needed to plot a running fix?Not learned 141. A marine sextant has the index arm set at zero and the reflected image of the horizon forms a continuous line with the actual image. When the sextant is rotated about the line of sight the images separate. The sextant has which error?Not learned 142. Which maritime radio system, consisting of a series of coast stations, transmits coastal warnings?Not learned 143. Mean low water is the average height of __________.Not learned 144. Mean lower low water is the reference plane used for which measurements?Not learned 145. The measurement of local time is based on the passage of the Sun over the __________.Not learned 146. Which term is given to the mechanical lifting of air by the upslope slant of the terrain?Not learned 147. Which meteorological feature controls the climate of the Gulf of Mexico and the coastal area during late spring and summer?Not learned 148. In mid-ocean, the characteristics of a wave are determined by three factors. What is NOT one of these factors?Not learned 149. When the moon is at first quarter or third quarter phase, what type of tides will occur?Not learned 150. At morning stars, the last stars that should be observed are those with an azimuth in which quadrant?Not learned 151. A NAVAREA warning carries the following number: 1986/87 (11). Which statement is TRUE?Not learned 152. The navigational triangle uses parts of two systems of coordinates, one of which is the celestial equator system, which is the other system?Not learned 153. A navigator fixing a vessel's position by radar __________.Not learned 154. When do neap tides occur?Not learned 155. Which is a nonadjustable error of the sextant?Not learned 156. In North America, which direction do the majority of the weather systems move?Not learned 157. In the North Sea area, you sight a buoy showing a quick white light with 9 flashes every 15 seconds. Which of the four topmarks shown in illustration D030NG below would be fitted to the buoy?Not learned 158. In the Northern Hemisphere, when the center of a high-pressure system is due east of your position, you can expect winds from which direction?Not learned 159. In the Northern Hemisphere, if your vessel is in a hurricane's navigable semicircle where should you position the wind relative to the vessel?Not learned 160. How can Northern right whales can be identified?Not learned 161. If an observer in the Northern Hemisphere faces the surface wind, where is the center of low pressure located?Not learned 162. Ocean swells originating from a typhoon can move ahead of it at speeds near __________.Not learned 163. How often are the time signals broadcast by WWV and WWVH transmitted?Not learned 164. An orange and white buoy indicating a vessel-exclusion area will be marked with what symbol?Not learned 165. In order to remove side error from a sextant, which adjustment can be made?Not learned 166. You are outbound in a buoyed channel on course 015°T. You sight a white light showing a MorseNot learned 167. In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n) __________.Not learned 168. When is the peak of the hurricane season in the western North Pacific?Not learned 169. You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?Not learned 170. 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 171. Your present weather is sunny with a steady barometer. A low swell approaches your vessel from the south with crests passing at relatively long periods of about four per minute. What does this usually indicate?Not learned 172. What is the primary source of the earth's weather?Not learned 173. Prior to reading an aneroid barometer, why should you tap the face lightly with your finger?Not learned 174. 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 175. What publication has information on the climate, distances, navigation regulations, outstanding landmarks, channels and anchorages of Long Island Sound?Not learned 176. Which radar control reduces weak echoes out to a limited distance from the ship?Not learned 177. Your radar displays your ship off center. As you proceed on your course, your ship's marker moves on the PPI scope while echoes from land masses remain stationary. What is this display called?Not learned 178. Which is TRUE of Radiation fog?Not learned 179. The radius of a circle of equal altitude of a body is equal to the __________.Not learned 180. What is the reaction of a gyrocompass to an applied force known as?Not learned 181. What do red sectors of navigation lights warn mariners of?Not learned 182. 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 183. IN REGION A of the IALA Buoyage System, when entering from seaward, how would the starboard side of a channel be marked?Not learned 184. In both regions of the IALA buoyage system, which topmark shown in illustration D022NG below is used on a special mark?Not learned 185. What is the relative bearing of an object on the port beam?Not learned 186. Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at __________.Not learned 187. With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.Not learned 188. With respect to a reversing current, when does slack water occur?Not learned 189. What results when warm moist air blows over a colder surface and is cooled below its dew point?Not learned 190. 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?Not learned 191. Safe water buoys may show ONLY which type of light?Not learned 192. A safe water daymark has what shape?Not learned 193. The set of the North Equatorial Countercurrent is generally in which direction?Not learned 194. 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 195. A sidereal day is approximately how much shorter than a solar day?Not learned 196. 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 197. What is a sling psychrometer used to measure?Not learned 198. What does a slow rise in the barometric pressure forecast?Not learned 199. In which source could you find the number of a chart for a certain geographic area?Not learned 200. In the Southern Hemisphere winds in a low pressure system rotate in which direction?Not learned 201. Which term is used to describe the speed at which an ocean wave system advances?Not learned 202. The Star Lists in the Nautical Almanac are based on which of the following magnitudes?Not learned 203. Which statement concerning the chartlet seen in illustration D010NG below is TRUE? (Soundings and heights are in meters)Not learned 204. Which statement about gyrocompass error is TRUE?Not learned 205. Which statement is TRUE for an unlighted, red and green, horizontally-banded buoy with the topmost band red?Not learned 206. 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 207. 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 208. While steaming north of the Irish coast, you sight a buoy which shows the light rhythm shown in illustration D028NG below. How would you pass this buoy?Not learned 209. You are steaming southward along the west coast of the United States when you encounter a buoy showing a flashing red light. Which is TRUE concerning the buoy?Not learned 210. 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 211. A sylphon cell is a part of which instrument?Not learned 212. You take a bearing of 086° of a lighthouse. Which bearing of another object would give the best fix?Not learned 213. Which is TRUE as the temperature of the air reaches the dew point?Not learned 214. Temperature and moisture characteristics are modified in a warm or cold air mass due to which factor?Not learned 215. Which is the term given to the time required for a lighted aid to complete a full cycle of light changes?Not learned 216. Which term refers to the direction a current is flowing?Not learned 217. Which term is used to describe a generally circular low-pressure area?Not learned 218. Which term is used to describe the wind speed and direction observed from a moving vessel?Not learned 219. Which theoretical minimum number of measurements from satellites does a GPS receiver need in order to provide an exact three-dimensional position?Not learned 220. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 221. 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 222. In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is located in which position?Not learned 223. Tropical storms and hurricanes are most likely to form in the Southern hemisphere during which months?Not learned 224. Which is TRUE if the compass error of a magnetic compass has no deviation?Not learned 225. Which is TRUE concerning the magnetic information on a chart?Not learned 226. Which is TRUE concerning a relative bearing?Not learned 227. Which is TRUE of the direction of flow (channel) on the Corps of Engineer's Navigation Maps?Not learned 228. Which is TRUE for a sextant having an index error that is "on the arc"?Not learned 229. Which is TRUE of the velocity of the current in large coastal harbors?Not learned 230. Which is TRUE of a vertically-striped buoy?Not learned 231. What type of clouds are associated with a cold front?Not learned 232. Which type of cloud is hail most likely to fall from?Not learned 233. Which type of precipitation is a product of the violent convection in thunderstorms?Not learned 234. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 235. You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 120°T, 100 miles from your position. The hurricane is moving towards 265°T at 25 knots. What course should you steer at 13 knots to have the maximum CPA?Not learned 236. 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 237. 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 238. Under the Uniform State Waterway Marking System how is a mooring buoy painted?Not learned 239. It is unlawful to approach within how many yards of a Northern Right Whale?Not learned 240. The upper vertex of a great circle track is in LONG 156°00'E. Sailing eastward, the great circle track will cross the equator in which LONG?Not learned 241. When using horizontal sextant angles of three objects to fix your position, an indeterminate position will result in which situation?Not learned 242. When using a mechanical (windup type) marine chronometer, how often should it be reset?Not learned 243. When using a radar in an unstabilized mode, fixes are determined most easily from __________.Not learned 244. The values of the Greenwich hour angle and declination, tabulated in all almanacs, are for the _________.Not learned 245. The velocity of a rotary tidal current will increase when the Moon is at which phase?Not learned 246. 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 247. The vertex of a great circle track is in LONG 109°E. Which longitude would an eastbound vessel cross the equator?Not learned 248. Your vessel is located at position I on the weather map in illustration D013NG below. You should experience which weather condition?Not learned 249. Your vessel is leaving New York harbor in dense fog. As the vessel slowly proceeds toward sea, you sight a green can buoy on the starboard bow. Which action should you take?Not learned 250. 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?Not learned 251. What weather change accompanies the passage of a cold front in the Northern Hemisphere?Not learned 252. Weather information provided by the National Weather Service (NWS) advisories should be used along with which other source of information?Not learned 253. Weather observations provided by each weather station include all of the following except which item?Not learned 254. What does a white buoy with an orange circle marked on it indicate?Not learned 255. What do widely spaced isobars on a weather map indicate?Not learned 256. 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 where should you set the points of the dividers to obtain the most accuracy?Not learned 257. When within 300 miles of a named tropical storm or hurricane, it is standard practice to send weather reports at which time interval?Not learned 258. Where would you expect to find channels marked with the IALA-A Buoyage System?Not learned 259. Yellow lights may appear on which buoys?Not learned 260. Yesterday your chronometer read 03h 01m 56s at the 1500 GMT time tick. Today your chronometer read 03h 01m 58s at the 1500 GMT time tick. What is the chronometer error?Not learned 261. Yesterday your chronometer read 11h 59m 58s at the 1200 GMT time tick. Today your chronometer reads 12h 00m 00s at the 1200 time tick. What is the chronometer rate?Not learned 262. 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?Not learned 263. Yesterday you took a time tick using the 1200 GMT broadcast, and the chronometer read 11h 59m 59s. Today at the 1200 GMT time tick the chronometer read 00h 00m 01s. What is the chronometer error?Not learned 264. The zenith is the point on the celestial sphere that is __________.Not learned 265. Which clouds is a thin, whitish, high cloud popularly known as "mares' tails"?Not learned 266. Which item in illustration D034NG below shows a fixed and flashing light?Not learned 267. 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 268. The Light List indicates that a light has a nominal range of 13 miles and is 36 feet high. If the visibility is 17 miles and your height of eye is 25 feet, at what approximate distance will you sight the light?Not learned 269. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned