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Deck · 2,639 questions

General Navigation - USCG Exam Questions

Chart reading, the U.S. Aids to Navigation System, compass error, tides and currents, and the standard navigation publications.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

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All General Navigation questions

Questions 1,001–1,100 of 2,639 · page 11 of 27

  1. #1084 When a hurricane passes over colder water or land and loses its tropical characteristics, the storm becomes a(n) __________.
  2. #1085 A storm's track is characterized by all of the following except __________.
  3. #1086 What is the direction of rotation of tropical cyclones, tropical storms and hurricanes in the Northern Hemisphere?
  4. #1087 In the relatively calm area near the hurricane center, the seas are __________.
  5. #1088 The dense black cumulonimbus clouds surrounding the eye of a hurricane are called __________.
  6. #1089 Which kind of conditions would you observe as the eye of a storm passes over your vessel's position?
  7. #1090 Tropical cyclones normally form within which of the following belts of latitude?
  8. #1091 Tropical cyclones are classified by form and intensity. Which system does not have closed isobars?
  9. #1092 What is the FIRST sign of the existence of a well developed tropical cyclone?
  10. #1093 In the Northern Hemisphere, the largest waves or swells created by a typhoon or hurricane will be located __________.
  11. #1094 What indicates that a tropical cyclone may be within 500 to 1,000 miles of your position?
  12. #1095 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?
  13. #1096 A tropical wave is usually preceded by __________.
  14. #1097 When is the peak of the hurricane season in the western North Pacific?
  15. #1098 Tropical storms and hurricanes are most likely to form in the Southern hemisphere during __________.
  16. #1099 Recurvature of a hurricane's track usually results in the forward speed __________.
  17. #1100 Cyclones tend to move __________.
  18. #1101 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 i...
  19. #1102 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 i...
  20. #1103 You are underway on course 050°T and your maximum speed is 13 knots. The eye of a hurricane bears 100°T, 120 miles from your position. The hurricane i...
  21. #1104 You are underway on course 120°T and can make 12 knots. The eye of a hurricane bears 150°T at 120 miles. The hurricane is on course 295° at 20 knots....
  22. #1105 You are underway on course 050°T and your maximum speed is 11 knots. The eye of a hurricane bears 070°T, 80 miles from your position. The hurricane is...
  23. #1106 You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from your position. The hurricane i...
  24. #1107 If it is impossible to avoid a hurricane in the Northern Hemisphere, the most favorable place to be when the storm passes is in __________.
  25. #1108 The dangerous semicircle of a typhoon in the Southern Hemisphere is that area __________.
  26. #1109 The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm __________.
  27. #1111 In a tropical cyclone, in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise is __________.
  28. #1112 The navigable semicircle of a tropical storm in the South Indian Ocean is located on which side of the storm's track?
  29. #1113 The navigable semicircle of a typhoon in the Southern Hemisphere is the area __________.
  30. #1114 The approximate distance to a storm center can be determined by noting the hourly rate of fall of the barometer. If the rate of fall is 0.08 - 0.12 in...
  31. #1115 The left half of the storm is called the navigable semicircle because __________.
  32. #1116 The edge of a hurricane has overtaken your vessel in the Gulf of Mexico, and the northwest wind of a few hours ago has shifted to the west. This is an...
  33. #1117 Which statement is FALSE concerning the dangerous semicircle of a hurricane?
  34. #1118 In the Northern Hemisphere, the right half of the storm is known as the dangerous semicircle because __________.
  35. #1119 The safest and most prudent procedure to follow while navigating in the vicinity of a tropical cyclone is to __________.
  36. #1120 An anemometer on a moving vessel measures __________.
  37. #1121 What is used to measure wind velocity?
  38. #1122 An instrument that indicates wind direction is known as a(n) __________.
  39. #1123 An instrument designed to maintain a continuous record of atmospheric pressure is a(n) __________.
  40. #1124 An aneroid barometer is an instrument __________.
  41. #1125 The correction(s) which must be applied to an aneroid barometer reading include(s) __________.
  42. #1126 A microbarograph is a precision instrument that provides a __________.
  43. #1128 Which correction(s) must be applied to an aneroid barometer?
  44. #1129 Which of the following statements is FALSE?
  45. #1130 For an accurate barometer check, you would __________.
  46. #1131 The purpose of the "set" hand on an aneroid barometer is to __________.
  47. #1132 A sylphon cell is a part of a __________.
  48. #1133 Prior to reading an aneroid barometer, you should tap the face lightly with your finger to __________.
  49. #1134 Which indication on the barometer is most meaningful in forecasting weather?
  50. #1135 The most important information to be obtained from a barometer is the __________.
  51. #1136 Which of the following is the most useful factor for predicting weather?
  52. #1137 The needle of an aneroid barometer points to 30.05 on the dial. This indicates that the barometric pressure is __________.
  53. #1138 Scales on aneroid barometers are usually graduated in inches of mercury in the general range of __________.
  54. #1139 A barometric pressure reading of 29.92 inches of mercury is equivalent to __________.
  55. #1140 A single barometric pressure reading of 28.60 indicates __________.
  56. #1141 An instrument which maintains a continuous record of temperature changes is called a __________.
  57. #1142 You should log all barometer readings taken at sea __________.
  58. #1143 The instrument most commonly used to gather the data for determining the relative humidity is the __________.
  59. #1144 A sling psychrometer is a(n) __________.
  60. #1145 A psychrometer has two thermometers that provide dry bulb and wet bulb temperatures. By comparing these two temperature readings with a set of tables...
  61. #1146 A sling psychrometer is used to measure __________.
  62. #1147 A warm air mass is characterized by __________.
  63. #1148 Temperature and moisture characteristics are modified in a warm or cold air mass due to __________.
  64. #1149 An air mass is termed "warm" if __________.
  65. #1150 Air temperature varies with __________.
  66. #1151 The process by which the temperature and/or moisture characteristics of an air mass changes is called __________.
  67. #1152 Hot air can hold __________.
  68. #1153 In North America the majority of the weather systems move from __________.
  69. #1154 Which of the listed properties does warm air possess?
  70. #1155 The apparent wind is zero when the true wind is __________.
  71. #1156 The wind speed and direction observed from a moving vessel is known as __________.
  72. #1157 A wind vane on a moving vessel shows __________.
  73. #1158 The apparent wind's speed can be zero, but only when two conditions are present. One condition is that the true __________.
  74. #1159 In most cases, the direction of the apparent wind lies between the bow and __________.
  75. #1160 The velocity of the apparent wind can be less than the true wind and from the same direction, if certain conditions are present. One condition is that...
  76. #1161 According to Buys Ballot's Law, when an observer in the Southern Hemisphere experiences a northwest wind, the center of the low pressure is located to...
  77. #1162 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, the c...
  78. #1163 According to Buys Ballot's law, when an observer in the Northern Hemisphere experiences a northeast wind the center of low pressure is located to the...
  79. #1164 If an observer in the Northern Hemisphere faces the surface wind, the center of low pressure is to his _________.
  80. #1165 If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position, what winds can you expect in the Northern...
  81. #1166 What wind reverses directions seasonally?
  82. #1167 A strong, often violent, northerly wind occurring on the Pacific coast of Mexico, particularly during the colder months, is called __________.
  83. #1168 A "Norther" in the Gulf of Mexico is __________.
  84. #1169 What will a veering wind do?
  85. #1170 A weather forecast states that the wind will commence backing. In the Northern Hemisphere, this would indicate that it will __________.
  86. #1171 A weather forecast states that the wind will commence veering. In the Northern Hemisphere this indicates that the wind will __________.
  87. #1172 A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a __________.
  88. #1173 Which wind results from a land mass cooling more quickly at night than an adjacent water area?
  89. #1174 What generally occurs when the land is cooler than the nearby water?
  90. #1175 A katabatic wind blows __________.
  91. #1176 Which Beaufort force indicates a wind speed of 65 knots?
  92. #1177 The Beaufort scale is used to estimate the __________.
  93. #1178 A gale is characterized by a wind speed of __________.
  94. #1179 A hurricane is characterized by winds of __________.
  95. #1180 In illustration D009NG below, your position X is at LAT 35°S. Which winds are you experiencing? illustration
  96. #1181 In regions near the poles, the winds are generally described as __________.
  97. #1182 Considering the general circulation of the atmosphere, the wind system between latitudes 30°N and 60°N is commonly called the __________.
  98. #1183 The force resulting from the earth's rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hem...
  99. #1184 Which of the following is associated with consistently high barometric pressure?
  100. #1185 The direction of prevailing winds in the Northern hemisphere is caused by the __________.

General Navigation questions: what to expect

Q How many General Navigation questions are in the Deck pool?

There are 2,639 General Navigation questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its General Navigation module from the same pool.

Q What score do I need to pass the General Navigation module?

Most USCG exam modules, including General Navigation, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG General Navigation exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

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About the Deck question pool

The Deck pool holds the current U.S. Coast Guard questions for every deck credential, from Able Seaman and the OUPV six-pack up to unlimited Master. Each question is multiple choice with four options, graded instantly, with the USCG reference shown where one exists.