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Deck · 1,168 questions

Rules of the Road - USCG Exam Questions

Steering and sailing rules, lights and shapes, and sound signals, covering both the international COLREGs and the U.S. Inland Rules. This is the strictest module on the deck exam: it requires 90 percent to pass.

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 Rules of the Road questions

Questions 801–900 of 1,168 · page 9 of 12

  1. #1828 INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtaking vessel sounds the signal indi...
  2. #1829 INLAND ONLY While underway in a harbor you hear a vessel sound a prolonged blast. What does this signal indicate?
  3. #1830 INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to o...
  4. #1831 INLAND ONLY You are on power-driven vessel "A" in a narrow channel as shown in illustration D032RR below. Power-driven vessel "B" sounds two short bla... illustration
  5. #1832 INLAND ONLY You are overtaking another power-driven vessel in a narrow channel. The other vessel will have to move to allow you to pass. You wish to o...
  6. #1833 INLAND ONLY Two power-driven vessels, "A" and "B" , are meeting in a narrow channel as shown in illustration D029RR below. Which statement is TRUE con... illustration
  7. #1834 INTERNATIONAL ONLY Which vessel is required to sound two prolonged blasts followed by one short blast on the whistle?
  8. #1835 INTERNATIONAL ONLY You are in charge of a 250 meter freight vessel constrained by her draft proceeding down a narrow channel. There is a vessel engage...
  9. #1836 INTERNATIONAL ONLY You are underway in a narrow channel, and you are being overtaken by a vessel astern. After the overtaking vessel sounds the proper...
  10. #1837 INTERNATIONAL ONLY While underway at night, a power-driven vessel of less than 7 meters in length, whose maximum speed which does not exceed 7 knots,...
  11. #1838 INTERNATIONAL ONLY Which is the minimal lighting requirement for a power-driven vessel less than 7 meters in length, with a maximum speed which does n...
  12. #1839 INTERNATIONAL ONLY Which vessel would display three red lights in a vertical line?
  13. #1840 INTERNATIONAL ONLY In addition to her running lights, a vessel constrained by her draft while underway shall carry which lights in a vertical line?
  14. #1841 INTERNATIONAL ONLY What characteristic must a light used to indicate passing intentions poses?
  15. #1842 INTERNATIONAL ONLY You are on a power-driven vessel, maneuvering as authorized, and are in sight of another vessel. You put your engines full speed as...
  16. #1843 BOTH INTERNATIONAL & INLAND Which signal is NOT a distress signal?
  17. #1844 BOTH INTERNATIONAL & INLAND In restricted visibility, which signal shall a vessel fishing with nets sound at intervals of two minutes?
  18. #1845 BOTH INTERNATIONAL & INLAND You are at anchor in fog on a 120 meter power-driven vessel. You hear the fog signal of a vessel approaching off your port...
  19. #1846 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a prolonged blast from another vessel. Which vessel would sound this signal?
  20. #1847 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. Which vessel shall sound t...
  21. #1848 BOTH INTERNATIONAL & INLAND You are underway in fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more str...
  22. #1849 BOTH INTERNATIONAL & INLAND You are operating in restricted visibility and hear a signal of a rapidly ringing bell followed by the rapid sounding of a...
  23. #1850 BOTH INTERNATIONAL & INLAND In reduced visibility, you hear two prolonged blasts of a whistle. This signal is sounded by which vessel?
  24. #1851 BOTH INTERNATIONAL & INLAND You are in charge of a power-driven vessel making way in dense fog. You observe what appears to be another vessel on radar...
  25. #1852 BOTH INTERNATIONAL & INLAND Which is TRUE concerning the danger signal?
  26. #1853 BOTH INTERNATIONAL & INLAND A vessel nearing a bend or an area of a channel or fairway where other vessels may be hidden by an obstruction shall take...
  27. #1854 BOTH INTERNATIONAL & INLAND A vessel signals you three flashes on its maneuvering light. What is the meaning of this signal?
  28. #1855 BOTH INTERNATIONAL & INLAND Which fog signal is a power-driven vessel making way through the water required to sound?
  29. #1856 BOTH INTERNATIONAL & INLAND In restricted visibility, when must a towed vessel sound a fog signal?
  30. #1857 BOTH INTERNATIONAL & INLAND Which vessel is required to sound a fog signal with a bell?
  31. #1858 BOTH INTERNATIONAL & INLAND All fog signals shall be sounded every two minutes with the exception of which vessels?
  32. #1859 BOTH INTERNATIONAL & INLAND Your vessel is 25 meters long and anchored in restricted visibility. Which time interval are you required to sound the pro...
  33. #1860 BOTH INTERNATIONAL & INLAND You are making headway in fog and hear a fog signal of two prolonged blasts on your starboard quarter. Which action should...
  34. #1861 BOTH INTERNATIONAL & INLAND While underway in a fog you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes...
  35. #1862 BOTH INTERNATIONAL & INLAND Which vessel(s) is required to sound a fog signal of one prolonged followed by two short blasts?
  36. #1863 BOTH INTERNATIONAL & INLAND Which signal shall a vessel underway and making way in fog shall sound every two minutes?
  37. #1864 BOTH INTERNATIONAL & INLAND A power-driven vessel underway in fog making NO way must sound which signal?
  38. #1865 BOTH INTERNATIONAL & INLAND While underway in fog you hear another vessel sounding two prolonged blasts every two minutes. What does this signal indic...
  39. #1866 BOTH INTERNATIONAL & INLAND A fog signal of one prolonged blast followed by four short blasts would mean the presence of which vessel?
  40. #1867 BOTH INTERNATIONAL & INLAND A vessel engaged in fishing underway sounds the same fog signal as which vessel?
  41. #1868 BOTH INTERNATIONAL & INLAND You are underway in fog and you hear three distinct bell strokes followed by five seconds of rapid bell ringing followed b...
  42. #1869 BOTH INTERNATIONAL & INLAND Your vessel is underway in fog and you hear one prolonged and three short blasts. Which vessel would use this identity sig...
  43. #1870 BOTH INTERNATIONAL & INLAND Your vessel is underway in fog and you hear one prolonged and three short blasts. Which vessel would this signal indicate?
  44. #1871 BOTH INTERNATIONAL & INLAND You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal...
  45. #1872 BOTH INTERNATIONAL & INLAND In fog, you hear apparently forward of your beam a fog signal of two prolonged blasts in succession every two minutes. Wha...
  46. #1873 BOTH INTERNATIONAL & INLAND A 200 meter vessel restricted in her ability to maneuver, at anchor, will sound which fog signal?
  47. #1874 BOTH INTERNATIONAL & INLAND You are in charge of a 120 meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the...
  48. #1875 BOTH INTERNATIONAL & INLAND Your vessel is aground in fog. In addition to the regular anchor signals, which signal is required to identify your condit...
  49. #1876 BOTH INTERNATIONAL & INLAND While underway in a fog, you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could...
  50. #1877 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. Which vessel is required t...
  51. #1878 BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the rapid ringing of a bell for five seconds followed by the sounding of a gong for...
  52. #1879 BOTH INTERNATIONAL & INLAND While underway in fog, you hear the rapid ringing of a bell for about five seconds followed by the sounding of a gong for...
  53. #1880 BOTH INTERNATIONAL & INLAND You are underway, in fog, when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal...
  54. #1881 BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the rapid ringing of a bell for five seconds followed by the sounding of a gong for...
  55. #1882 BOTH INTERNATIONAL & INLAND Which signal shall a vessel towing in fog required to sound?
  56. #1883 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two prolonged blasts on the whistle. Which action should you take?
  57. #1884 BOTH INTERNATIONAL & INLAND While underway in fog you hear a whistle signal consisting of one prolonged blast followed immediately by two short blasts...
  58. #1885 BOTH INTERNATIONAL & INLAND While underway and pushing a barge ahead, your vessel enters a heavy rain storm. Which signal are you required to sound?
  59. #1886 BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This signal indicates which vessel?
  60. #1887 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel ahead sound two short blasts on the whistle. You should take which action?
  61. #1888 BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound which fog signal?
  62. #1889 BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel being towed, if manned, is required to sound which signal?
  63. #1890 BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound which fog signal?
  64. #1891 BOTH INTERNATIONAL & INLAND Which signal shall a vessel being towed, if manned, sound while in fog?
  65. #1892 BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in fog. Which signal is she required to sound?
  66. #1893 BOTH INTERNATIONAL & INLAND While underway in fog, you hear a short blast, a prolonged blast, and a short blast of a whistle. This signal indicates wh...
  67. #1894 BOTH INTERNATIONAL & INLAND A vessel being towed, if manned, shall sound which fog signal?
  68. #1895 BOTH INTERNATIONAL & INLAND A sailing vessel with the wind abaft the beam is navigating in restricted visibility. Which identity signal should she sou...
  69. #1896 BOTH INTERNATIONAL & INLAND A vessel anchored in fog may warn an approaching vessel by sounding which signal?
  70. #1897 BOTH INTERNATIONAL & INLAND A tug is towing three unmanned barges astern in fog. The third vessel of the tow must take which action?
  71. #1898 BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. Which signal is the third barge of the tow required to sound?
  72. #1899 BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. Which signal, if any is the first vessel of the tow required to sound?
  73. #1900 BOTH INTERNATIONAL & INLAND A tug is towing three barges astern in restricted visibility. Which is TRUE for the signal(s) of the second vessel of the...
  74. #1901 BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The second vessel of the tow should sound which signal?
  75. #1902 BOTH INTERNATIONAL & INLAND A pilot vessel may continue to sound an identity signal under which condition?
  76. #1903 BOTH INTERNATIONAL & INLAND When may a pilot vessel continue to sound an identity signal in fog?
  77. #1904 BOTH INTERNATIONAL & INLAND A pilot vessel may continue to sound an identity signal under which situation?
  78. #1905 BOTH INTERNATIONAL & INLAND Which signal, other than a distress signal, can be used by a vessel to attract attention?
  79. #1906 BOTH INTERNATIONAL & INLAND You hear the firing of a gun at one minute intervals from another vessel. What does this signal indicate?
  80. #1907 BOTH INTERNATIONAL & INLAND Which signal should be used to indicate that your vessel is in distress?
  81. #1908 BOTH INTERNATIONAL & INLAND What does the continuous sounding of a fog whistle by a vessel indicate?
  82. #1909 BOTH INTERNATIONAL & INLAND If you saw flames aboard a vessel but could see the vessel was not on fire, what would this indicate?
  83. #1910 BOTH INTERNATIONAL & INLAND When a vessel signals her distress by means of a gun or other explosive signal, which firing intervals should be used?
  84. #1911 BOTH INTERNATIONAL & INLAND Which are Distress signals?
  85. #1912 BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown in illustration D017RR below. In this situation which of the following descri... illustration
  86. #1913 BOTH INTERNATIONAL & INLAND Two vessels are approaching each other near head-on. What action should be taken to avoid collision?
  87. #1914 INTERNATIONAL ONLY When vessels are in sight of one another, what does two short blasts from one of the vessels mean?
  88. #1915 BOTH INTERNATIONAL & INLAND You are in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. The Rule...
  89. #1916 INLAND ONLY You are in charge of a power-driven vessel crossing on the Western Rivers. You must keep out of the way of which vessel?
  90. #1917 INTERNATIONAL ONLY Which is TRUE of a towing light when the power-driven vessel is towing alongside?
  91. #1918 INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?
  92. #1919 BOTH INTERNATIONAL & INLAND Which is a requirement for a vessel approaching a narrow channel?
  93. #1920 BOTH INTERNATIONAL & INLAND A power-driven vessel is underway and fishing with trolling lines. Which statement is TRUE?
  94. #1921 BOTH INTERNATIONAL & INLAND In a crossing situation, a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her...
  95. #1922 INLAND ONLY What whistle signal would a power-driven vessel overtaking another in a narrow channel, and wishing to pass on the other vessel's port sid...
  96. #1923 BOTH INTERNATIONAL & INLAND If a sailing vessel with the wind on the port side sees a sailing vessel to windward and cannot tell whether the other ves...
  97. #1924 INLAND ONLY While underway and in sight of another power-driven vessel forward of your beam, more than 0.5 mile away, you put your engines full speed...
  98. #1925 BOTH INTERNATIONAL & INLAND You are approaching another vessel on crossing courses. She is about one mile distant and is on your starboard bow. You be...
  99. #1926 BOTH INTERNATIONAL & INLAND When underway in a channel, where should you keep your vessel as is safe and practical?
  100. #1927 BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close-...

Rules of the Road questions: what to expect

Q How many Rules of the Road questions are in the Deck pool?

There are 1,168 Rules of the Road 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 Rules of the Road module from the same pool.

Q What score do I need to pass the Rules of the Road module?

Rules of the Road requires 90 percent, the highest passing score on the exam. On a 30-question module that leaves room for three mistakes, so most candidates make it the center of their study plan.

Q Are these the real USCG Rules of the Road 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.