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Deck · 5,775 questions

Deck General - USCG Exam Questions

Seamanship in the broad sense: marlinespike, ground tackle and anchoring, mooring and towing, weather, stability basics, and day-to-day vessel operations.

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 Deck General questions

Questions 1,001–1,100 of 5,775 · page 11 of 58

  1. #1094 Which portable fire extinguisher is classified as a type B-III extinguisher?
  2. #1095 When loading a petroleum cargo which is below average ambient temperatures, You must do which of the following?
  3. #1096 Which of the following applies to cargo tank safety valves?
  4. #1097 Where is a permanently installed system of gas detection required?
  5. #1098 Which tank barges require draft marks?
  6. #1099 On tank vessels, fully charged fire extinguishers are considered semi-portable when they have a gross weight of more than __________.
  7. #1100 Which of the signals listed is required to be displayed during the day while bunkering?
  8. #1101 A tank which carries liquid is dangerous to the stability of a vessel when it is in what state?
  9. #1102 Deck foam systems, designed to protect cargo areas on tank vessels built after January 1, 1975, must have a supply of foam-producing material to opera...
  10. #1103 The purpose of inert gas systems aboard tank vessels is to __________.
  11. #1104 What is the total number of approved low-velocity spray ("water-fog") applicators required aboard a tankship?
  12. #1105 On a vapor control system, each vessel's vapor connection flange must have a __________.
  13. #1106 Which of the following grade classifications is assigned to Camphor oil?
  14. #1107 The tankship Northland is loaded as shown in table BL-0027 below. Use the salmon colored pages in the Stability Data Reference Book to determine the s...
  15. #1108 According to regulations, how many B-II hand portable fire extinguishers are required in the cargo tank area of an unmanned, cargo pump-equipped tank...
  16. #1109 A tankship has 40 gallons of 6% foam concentrate aboard. Approximately how much foam solution can be produced from this supply?
  17. #1110 Which statement about the use of portable electric lights in petroleum product tanks is TRUE?
  18. #1111 Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge __________.
  19. #1112 You have berthed in a port area with other tank vessels. What signal is displayed by a vessel to indicate it is transferring flammable or combustible...
  20. #1113 U.S. regulations require any tankship making a voyage of over 48 hours duration to conduct certain tests not more than 12 hours prior to leaving port....
  21. #1114 Each fire pump on a tankship must have a pressure gauge located at __________.
  22. #1115 A cargo information card does NOT contain __________.
  23. #1116 Branch venting from safety relief valves on barges shall be constructed to discharge the gas at a vertical height above the weather deck to a minimum...
  24. #1117 Which statement is TRUE concerning buoyant work vests aboard tank vessels?
  25. #1118 The tankship Northland is loaded as shown in table BL-0028 below. Use the salmon colored pages in the Stability Data Reference Book to determine the s...
  26. #1119 The fresh air intake of the inert gas system _____,
  27. #1120 In accordance with U.S. regulations, no vessel can come or remain alongside a tank vessel while it is loading A, B, or C grade cargo without permissio...
  28. #1121 To insure proper seating when closing a valve on a tank, the valve should be __________.
  29. #1122 What type of vent system would a barge of acrylonitrile have?
  30. #1123 While underway and towing an unmanned tank barge you are required to __________.
  31. #1124 If you have a liquefied flammable gas barge in tow, which is NOT required of you with respect to the barge and its cargo?
  32. #1125 The amount of LFG that may be loaded into a given tank is determined by __________.
  33. #1126 What is NOT a responsibility of the tankerman in charge of loading an unmanned tank barge?
  34. #1127 Your tow includes a loaded chlorine barge. After inspecting the tow, the mate reports that he hears a hissing sound coming from the safety valves. Whe...
  35. #1128 You are making tow. A loaded, open-hopper barge with independent tanks has placards, with alternating red and white quadrants, located at each side an...
  36. #1129 When loading bulk liquid cargo, what is the FIRST action you should take if a cargo valve jammed open?
  37. #1130 On tankers ullages are measured from what point?
  38. #1131 According to U.S. regulations, what is required where cargo pump shafts on tankers pierce bulkheads?
  39. #1132 Your ship has loaded 8,000 barrels of gasoline at a cargo temperature of 36°C (97°F). API gravity is 54°. The volume correction factor (VCF) is .0006....
  40. #1133 You have orders to drop off a barge loaded with propylene oxide at a fleet. In doing so, you must ensure that __________.
  41. #1134 What is the purpose of pressure-vacuum relief valves?
  42. #1135 What is meant by "thieving" a petroleum cargo?
  43. #1136 Which statement is TRUE of centrifugal pumps aboard tankers?
  44. #1137 Who may approve cargo piping to pass through a machinery space for a barge designed to carry only grade E products?
  45. #1138 Which credential enables a person to serve as person in charge of a tank barge which is transferring cargo?
  46. #1139 What is NOT an advantage of centrifugal pumps over reciprocating pumps?
  47. #1140 An inert gas system installed on a tanker is designed to __________.
  48. #1141 If your Bunker-C barge has operated in salt water for more than 12 months in the 24 month period since it was last dry-docked, when is it required to...
  49. #1142 In what condition is LNG transported?
  50. #1143 While underway with full LNG cargo tanks, an alarm indicates liquid in hold space #3. What should be the first action taken?
  51. #1144 A combustible liquid is defined as any liquid having a flash point above what temperature?
  52. #1145 A petroleum liquid has a flash point of 85°F. This is a grade __________.
  53. #1146 What are the venting requirements for a barge with a cargo of adiponitrile?
  54. #1147 Which of the following describes the fresh air intake of the inert gas system?
  55. #1148 What characteristic does a chemical additive to LPG give it?
  56. #1149 Which statement is TRUE concerning cargo hose on tank barges?
  57. #1150 A tanker is loaded with 12,000 barrels of #2 fuel oil. The temperature of the product is 88°F. API gravity is 39°. The volume correction factor (VCF)...
  58. #1151 What is NOT a requirement for storage batteries on tank barges?
  59. #1152 A person may operate an air compressor in which of the following areas on board a tank barge?
  60. #1153 Which statement about a centrifugal cargo pump is TRUE?
  61. #1154 Which type of power may a towing vessel use to drive the cargo pumps of a tank barge?
  62. #1155 Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil?
  63. #1156 What is a requirement for remote manual shutdown stations for internal combustion engine driven cargo pumps on tank barges?
  64. #1157 There is a water spray or deluge system on LNG vessels that provide a water spray over all areas around the cargo system. What can this system be used...
  65. #1159 After allowing for pressure losses, the pressure-volume capacity of an inert gas blower must be able to maintain a pressure, in any cargo tank, at a m...
  66. #1160 Which commodity would be regulated by subchapter D, Rules and Regulations for Tank Vessels?
  67. #1161 The purpose of the deck seal in an inert gas system is to prevent __________.
  68. #1162 The tankship Northland is loaded as shown in table BL-0014 below. Use the salmon colored pages in the Stability Data Reference Book to determine the s...
  69. #1163 You are in charge of a 225-gross ton tug preparing to depart from Houston, Texas, with a loaded 2500-gross ton tank barge bound for New York. Prior to...
  70. #1164 You are towing a 1,000 GT gasoline tank barge which is not gas free. By regulation, cargo tank hatches, ullage holes, and Butterworth plates on the ba...
  71. #1165 The sign used to caution persons approaching the gangway of a tank barge during cargo transfer reads __________.
  72. #1166 Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer?
  73. #1167 Which signal must you display at night on a docked tank barge to show that it is loading or discharging flammable liquid cargo?
  74. #1168 Where should a tank barge's Certificate of Inspection be kept?
  75. #1169 A barge displaying a 2' X 3' white sign with the word "WARNING" followed by "DANGEROUS CARGO" in black letters __________.
  76. #1170 Which alarm is NOT found on an inert gas system?
  77. #1171 Your tow includes a barge carrying chlorine. Which special requirements must be observed?
  78. #1172 The tankship Northland is loaded as shown in table BL-0004 below. Use the salmon colored pages in the Stability Data Reference Book to determine the h...
  79. #1173 The weight of liquefied petroleum gas vapors as compared to air is __________.
  80. #1174 Which barge in your tow would require a cargo information card to be carried in the pilothouse?
  81. #1175 You are underway with a tow consisting of six barges containing hazardous chemicals. Which statement is FALSE concerning a cargo information card?
  82. #1176 On many modern tankers, which of the following devices is used to reduce cargo pump leakage to the pump room bilge?
  83. #1177 Your tow contains a barge carrying carbon tetrachloride. What is NOT required?
  84. #1178 A loaded hopper barge with independent tanks has a placard, with alternating red and white quadrants, on each side and end. Which statement concerning...
  85. #1179 According to regulations, how many B-II hand portable fire extinguishers are required in the cargo tank area of an unmanned, cargo pump-equipped tank...
  86. #1181 How many fire extinguishers, and what type, are required on an unmanned oil barge during transfer operations, if the barge has no cargo pumps aboard?
  87. #1182 If your asphalt barge has operated more than 12 months in saltwater in the 24 month period since it was last dry-docked, when is it required to be hau...
  88. #1183 The tankship Northland is loaded as shown in table BL-0023 below. Use the salmon colored pages in the Stability Data Reference Book to determine the h...
  89. #1184 A tank is loaded with 9,000 barrels of gasoline. The temperature of the product is 90°F (32°C), and it has a coefficient of expansion of .0008. What i...
  90. #1185 To determine the pressure and temperature limitations under which LFG is required to be transported on a barge, you should look at the __________.
  91. #1186 On a barge carrying grade A cargo, who determines where smoking may be permitted during a loading operation?
  92. #1187 What type of liquid is used in the liquid P/V breaker?
  93. #1189 While discharging cargo, the cargo tank pressures are falling too low. What can the Cargo Officer do to correct the problem?
  94. #1190 What should you look at to determine the pressure and temperature limitations under which LFG is required to be transported on a barge?
  95. #1191 During cargo transfer on an unmanned tank barge, how many portable fire extinguishers are required in the cargo tank area, if the barge has no cargo p...
  96. #1192 Your vessel is taking on fuel when a small leak develops in the hose. You order the pumping stopped. Before you resume pumping, you should __________.
  97. #1193 When bunkering is complete, the hoses should be __________.
  98. #1194 If you are bunkering and you close off one tank in the line of tanks being filled, the rate of flow to other open tanks on the same line will ________...
  99. #1195 Which of the signals listed is required to be displayed at night while bunkering at a dock?
  100. #1196 Your non-oceangoing vessel is required to have a fixed piping system to discharge oily mixtures ashore. What is required at each outlet of this system...

Deck General questions: what to expect

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

There are 5,775 Deck General 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 Deck General module from the same pool.

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

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

Q Are these the real USCG Deck General 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.