Q450 - Navigation and Rules of the Road, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. Which type of daymark is used to mark the port side of the channel when entering from sea?Not learned 2. BOTH INTERNATIONAL & INLAND Which of the following is TRUE of a distress signal?Not learned 3. How can you indicate that your vessel is in distress?Not learned 4. How many degrees are there on a compass card?Not learned 5. What does the lubber's line on a magnetic compass indicate?Not learned 6. A vessel heading NE is on which course?Not learned 7. What action should the helmsman take when hearing the command "ease the rudder"?Not learned 8. What does the command "Hard right rudder" mean?Not learned 9. What is a CORRECT reply to a pilot's request, "How's your head"?Not learned 10. While on duty as a look-out, which other duty may you perform?Not learned 11. What does the helm command "Left twenty" mean?Not learned 12. What does the helm command "meet her" mean?Not learned 13. What does the helm command "shift the rudder" mean?Not learned 14. What does the helm command "Steady as you go" mean?Not learned 15. What should look-outs report?Not learned 16. When is a lookout permitted to leave his station?Not learned 17. You are standing the wheel watch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot. What should you do?Not learned 18. When must a proper look-out be kept?Not learned 19. When being relieved of the helm, the new helmsman would find it handy to know which of the following?Not learned 20. While standing look-out at night, which is the BEST way to see a dim light on the horizon?Not learned 21. What is an advantage of the magnetic compass aboard vessels?Not learned 22. What is the basic principle of the magnetic compass?Not learned 23. Where are buoys and day beacons exhibiting a yellow triangle or square painted on them used?Not learned 24. Which of the buoys listed below could be used to mark an anchorage?Not learned 25. Buoys which mark dredging areas are painted which color?Not learned 26. How are buoys which mark isolated dangers painted?Not learned 27. A buoy marking a wreck will show a(n) __________.Not learned 28. Which buoy may be odd numbered?Not learned 29. Which buoy may be odd numbered?Not learned 30. A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water is located in which quadrant?Not learned 31. What is a characteristic of cardinal marks?Not learned 32. What is NOT a characteristic of cardinal marks?Not learned 33. Which of the following is a characteristic of a lighted cardinal mark?Not learned 34. Which would be the characteristic of an occulting light?Not learned 35. Which is a characteristic of a port side daymark?Not learned 36. The Coast Guard Captain of the Port has excluded all traffic from a section of a port, while a regatta is taking place. Which describes the buoys marking this exclusion area?Not learned 37. What color lights do lighted information markers display?Not learned 38. What is the compass course of a vessel heading NNE?Not learned 39. What is the compass course of a vessel heading NNW?Not learned 40. What is the compass course of a vessel heading NW?Not learned 41. What is the compass course of a vessel heading SW?Not learned 42. You are on course 090°T when you sight a flashing white light with a characteristic of VQ(9)10s. You immediately change course to 030°T. After one hour, you sight another flashing white light with the characteristic of VQ. You must pass well __________.Not learned 43. What daymark shape is used in the lateral system?Not learned 44. Deviation in a compass is caused by which of the following?Not learned 45. As you enter a U.S. channel from seaward, which is TRUE concerning the numbers on the buoys?Not learned 46. When entering a channel from seaward, the numbers on buoys __________.Not learned 47. You are entering an east coast port and see a buoy with a yellow triangle painted on it. What does the symbol indicate?Not learned 48. When entering from seaward, what does a buoy displaying a single-flashing red light indicate?Not learned 49. What feature(s) of a daymark is (are) used to identify the beacon upon which it is mounted?Not learned 50. Which is a feature of a special daymark?Not learned 51. Which of the following traits possessed by an articulated light makes it superior to other types of buoys?Not learned 52. What is the function of a red triangular daymark?Not learned 53. The height of a light is measured from which reference plane?Not learned 54. Under the U.S. Aids to Navigation System, what does a lighted buoy with a spherical topmark mark indicate?Not learned 55. Under the IALA Buoyage Systems, which is TRUE of the topmark of a red and white vertically-striped buoy?Not learned 56. 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 57. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?Not learned 58. In the IALA Maritime Buoyage System, what is a red and white vertically-striped buoy used to indicate?Not learned 59. When a light is first seen on the horizon it will disappear again if the height of eye is immediately lowered several feet. When the eye is raised to its former height the light will again be visible. Which term is given to this process?Not learned 60. What is the light phase characteristic of a lighted isolated-danger mark?Not learned 61. Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?Not learned 62. What is a lighted safe water mark fitted with to aid in its identification?Not learned 63. How should a look-out, in the merchant service, report sightings?Not learned 64. Which is TRUE concerning magnetic compass deviation?Not learned 65. Which term is used to express the maximum distance at which a light may be seen under existing visibility conditions?Not learned 66. A mid-channel buoy, may show which light?Not learned 67. Which navigational mark may only be lettered?Not learned 68. A nun buoy will __________.Not learned 69. When outbound from a U.S. port, what does a buoy displaying a flashing red light indicate?Not learned 70. What does the period of a lighted aid to navigation refer to?Not learned 71. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which of the following is TRUE?Not learned 72. You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which statement is TRUE?Not learned 73. 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 74. You sight a spar buoy with the topmark shown in illustration D027NG below. You must take which of the following actions?Not learned 75. A special mark (yellow buoy), if lighted, may exhibit which light rhythm?Not learned 76. You sight an isolated danger buoy with a white flashing light showing a group of two flashes. The buoy indicates you should take which action?Not learned 77. 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 78. Which topmark shown in illustration D023NG below identifies an isolated danger?Not learned 79. Which is TRUE concerning compass error?Not learned 80. Which is TRUE of a nun buoy in the IALA Region B system of buoyage?Not learned 81. Two navigational hazards are located near to each other, but each is marked by an individual cardinal buoyage system. How are the buoys of one cardinal system identified from the other system?Not learned 82. Which type of daymark is used to mark the starboard side of the channel when entering from sea?Not learned 83. Under the U.S. Aids to Navigation System, which category is a yellow buoy?Not learned 84. Under the U.S. Aids to Navigation System, a special mark possesses which of the following characteristics?Not learned 85. 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 86. 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 87. In United States waters, a buoy having red and white vertical stripes if lighted, it will have which light characteristic?Not learned 88. What does a white buoy with a blue band signify?Not learned 89. What does a white buoy with an orange circle marked on it indicate?Not learned 90. What does a white buoy with an orange cross within a diamond marked on it indicate?Not learned 91. What does a white buoy with an orange rectangle on it indicate?Not learned 92. What does a white diamond daymark with an orange border indicate?Not learned 93. INLAND ONLY You are aboard the stand-on vessel in a crossing situation. You sound a one blast whistle signal. The give-way vessel answers with a two blast whistle signal. You are in doubt as to the other vessel's intentions, what action should you take after sounding five short and rapid blasts of the whistle?Not learned 94. INLAND ONLY A barge more than 50 meters long is required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?Not learned 95. INLAND ONLY You are crossing the course of another vessel which is to your starboard. You have reached an agreement by radiotelephone to pass astern of the other vessel. You MUST __________.Not learned 96. INLAND ONLY A flashing blue light is used to identify which of the following vessels?Not learned 97. INLAND ONLY A fleet of moored barges extends into a navigable channel. What is the color of the lights on the barges?Not learned 98. INLAND ONLY Identify the operation indicated by the lights exhibited as shown in illustration D085RR below.Not learned 99. INLAND ONLY Which light(s) are permitted ONLY for law enforcement vessels?Not learned 100. INLAND ONLY What MAY be used to indicate the presence of a partly submerged object being towed?Not learned 101. INLAND ONLY You are meeting "head-on" a tug towing a barge alongside about a mile away. In addition to the white masthead lights which other lights do you see on the tug and tow combined?Not learned 102. INLAND ONLY At night, a barge moored in a slip used primarily for mooring purposes shall exhibit which of the following?Not learned 103. INLAND ONLY At night, you see the lights shown in illustration D075RR below. These lights are shown by what type of vessel?Not learned 104. 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 overtake the other vessel on her starboard side. What should be your first whistle signal?Not learned 105. INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in illustration D029RR below and will pass about 1/4 mile apart. Which statement is TRUE?Not learned 106. INLAND ONLY When power-driven vessels are crossing, what does a signal of one short blast by either vessel mean?Not learned 107. INLAND ONLY A power-driven vessel when pushing ahead or towing alongside on the Western Rivers (above the Huey P. Long Bridge on the Mississippi River at mile 106.1) shall exhibit which of the following configurations?Not learned 108. INLAND ONLY When power-driven vessels are in sight of one another, when shall passing signals be sounded?Not learned 109. INLAND ONLY When shall signals be sounded by a power-driven vessel intending to overtake another vessel?Not learned 110. INLAND ONLY You sight a vessel displaying an alternating red and yellow light. What does this light indicate?Not learned 111. INLAND ONLY Which signal must a power-driven vessel give, in addition to one prolonged blast, when backing out of a berth with another vessel in sight 0.5nm away?Not learned 112. INLAND ONLY You are the stand-on vessel in an overtaking situation. The other vessel is showing an alternately flashing red-and-yellow light. What action should you take?Not learned 113. INLAND ONLY Which statement is TRUE concerning lighting requirements for Great Lakes vessels?Not learned 114. INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown in illustration D042RR below. Vessel "A" sounds one short blast on the whistle, what does this signal mean?Not learned 115. INLAND ONLY Two power-driven vessels are meeting in the situation as shown in illustration D037RR below and will pass within 1/2 mile of each other. What does two short blasts from either vessel mean?Not learned 116. INLAND ONLY You are underway in a narrow channel, and are being overtaken by another power-driven vessel. The overtaking vessel sounds the signal indicating his intention to pass you on your starboard side. What is your signal of agreement?Not learned 117. INLAND ONLY Vessels "A" and "B" are meeting on a river as shown in illustration D041RR below and will pass 1/4 mile apart. Which is one of the lights on vessel "B" that you will see if you are on vessel "A"?Not learned 118. INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. Which of the following vessels may exhibit this special light?Not learned 119. INLAND ONLY A vessel engaged in public safety activities may display an alternately flashing red and yellow light. This special light may be used by a vessel engaged in which of the following?Not learned 120. INLAND ONLY A vessel leaving a dock or berth must sound a prolonged blast of the whistle only if __________.Not learned 121. INLAND ONLY Yellow lights are NOT used to identify which of the following?Not learned 122. BOTH INTERNATIONAL & INLAND According to the Navigation Rules, all of the following are engaged in fishing EXCEPT a vessel __________.Not learned 123. 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 bow. Which signal may you sound to warn of your position?Not learned 124. BOTH INTERNATIONAL & INLAND In a crossing situation of two power-driven vessels, the vessel which has the other on her own starboard side shall take which action?Not learned 125. BOTH INTERNATIONAL & INLAND While underway in fog, you hear a signal of one prolonged blast followed by three short blasts. Which vessel shall sound this fog signal?Not learned 126. BOTH INTERNATIONAL & INLAND Which describes a head-on situation?Not learned 127. BOTH INTERNATIONAL & INLAND Which is a distress signal?Not learned 128. BOTH INTERNATIONAL & INLAND Which are Distress signals?Not learned 129. BOTH INTERNATIONAL & INLAND When is a vessel which is fishing, required to show sidelights and a stern light?Not learned 130. BOTH INTERNATIONAL & INLAND What does five or more short blasts on a vessel's whistle indicate?Not learned 131. BOTH INTERNATIONAL & INLAND A "flashing light", by the definition given in the rules, is a light that __________.Not learned 132. BOTH INTERNATIONAL & INLAND Which of the following describes a vessel displaying the lights shown in illustration D057RR below?Not learned 133. BOTH INTERNATIONAL & INLAND A head-on situation at night occurs when you can see which light(s)?Not learned 134. BOTH INTERNATIONAL & INLAND For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?Not learned 135. BOTH INTERNATIONAL & INLAND In illustration D023RR below which represents the arc of visibility of a red sidelight?Not learned 136. BOTH INTERNATIONAL & INLAND You are involved in a crossing situation with a vessel off your port bow. The other vessel is showing a high intensity all-round flashing red light. Which action should you take?Not learned 137. BOTH INTERNATIONAL & INLAND Which is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?Not learned 138. A man aboard a vessel, is signaling by raising and lowering his outstretched arms to each side. What does this signal indicate?Not learned 139. BOTH INTERNATIONAL & INLAND When may a pilot vessel continue to sound an identity signal in fog?Not learned 140. BOTH INTERNATIONAL & INLAND What is the minimum length of vessels required to show two anchor lights?Not learned 141. BOTH INTERNATIONAL & INLAND When navigating in thick fog with the radar on, which action should you take?Not learned 142. BOTH INTERNATIONAL & INLAND At night, the lights shown in illustration D076RR would indicate a vessel engaged in which of the operations?Not learned 143. BOTH INTERNATIONAL & INLAND At night you sight a vessel displaying a single green light. Which vessel have you sighted?Not learned 144. BOTH INTERNATIONAL & INLAND At night, you are towing a partly submerged vessel, 20 meters in length and 4 meters in breadth. What lights must you display on the towed vessel?Not learned 145. BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown in illustration D052RR below represents which of the following?Not learned 146. BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights shown in illustration D065RR is doing which of the following?Not learned 147. BOTH INTERNATIONAL & INLAND What is the optional whistle signal which may be sounded by a vessel at anchor?Not learned 148. BOTH INTERNATIONAL & INLAND You are overtaking a vessel at night and you see a yellow light showing above the stern light of the overtaken vessel. Which is TRUE of the vessel being overtaken?Not learned 149. BOTH INTERNATIONAL & INLAND Your power-driven vessel is stopped and making no way, but is not in any way disabled. Another vessel is approaching you on your starboard beam. Which statement is TRUE?Not learned 150. BOTH INTERNATIONAL & INLAND For the purpose of the Rules, except where otherwise required, the term __________.Not learned 151. BOTH INTERNATIONAL & INLAND Which requirement must be met in order for a stand-on vessel to take action to avoid collision?Not learned 152. BOTH INTERNATIONAL & INLAND Rule 14 describes the action to be taken by vessels meeting head-on. Which of the following conditions must exist in order for this rule to apply?Not learned 153. BOTH INTERNATIONAL & INLAND When does the rule regarding look-outs apply?Not learned 154. BOTH INTERNATIONAL & INLAND You are on a sailing vessel. While under sail you decide to use your engine to assist in propulsion. Which of the shapes shown in illustration D016RR below would you exhibit?Not learned 155. BOTH INTERNATIONAL & INLAND You are on a sailing vessel with the wind on the starboard side and are approaching another sailing vessel that has the wind on the port side. Which action should you take?Not learned 156. BOTH INTERNATIONAL & INLAND You see the lights shown in illustration D077RR below. This could be which of the following?Not learned 157. BOTH INTERNATIONAL & INLAND You see ONLY the light shown in illustration D080RR below. Which type of vessel are you observing?Not learned 158. BOTH INTERNATIONAL & INLAND You see a red sidelight bearing NW (315°). That vessel may be heading in which direction?Not learned 159. BOTH INTERNATIONAL & INLAND When shall a proper look-out be maintained?Not learned 160. BOTH INTERNATIONAL & INLAND Which of the signals, other than a distress signal, can be used by a vessel to attract attention?Not learned 161. BOTH INTERNATIONAL & INLAND What would be a "special circumstance" under the Rules?Not learned 162. BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?Not learned 163. BOTH INTERNATIONAL & INLAND You are towing several barges astern at night. Which statement is TRUE?Not learned 164. BOTH INTERNATIONAL & INLAND Which is TRUE for barges being towed at night?Not learned 165. BOTH INTERNATIONAL & INLAND Which is TRUE for a fishing vessel displaying the lights shown in illustration D067RR below?Not learned 166. BOTH INTERNATIONAL & INLAND Which is TRUE for a self-propelled dredge NOT engaged in dredging, but proceeding to a dredging location at night?Not learned 167. BOTH INTERNATIONAL & INLAND Which is TRUE of the signal consisting of five or more short blasts on the ship's whistle?Not learned 168. BOTH INTERNATIONAL & INLAND Which is TRUE when a vessel uses any sound or light signals to attract the attention of another vessel?Not learned 169. BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown in illustration D042RR below. Vessel "A" sounds three short blasts on the whistle. What is the meaning of this signal?Not learned 170. BOTH INTERNATIONAL & INLAND If two sailing vessels are running free with the wind on the same side, which one must keep clear of the other?Not learned 171. BOTH INTERNATIONAL & INLAND Two vessels are meeting head-on. How must the vessels pass?Not learned 172. BOTH INTERNATIONAL & INLAND Which type of vessel is required to display the lights shown in illustration D070RR below?Not learned 173. 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 about five seconds. This signal came from which vessel?Not learned 174. BOTH INTERNATIONAL & INLAND While underway in fog, you hear a vessel sound one prolonged blast followed by two short blasts on the whistle. What does this signal indicate?Not learned 175. BOTH INTERNATIONAL & INLAND You are underway in a narrow channel and are being overtaken by a vessel astern. The overtaking vessel sounds a signal indicating her intention to pass you on your starboard side. If such an action appears dangerous, which signal are you required to sound?Not learned 176. BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown in illustration D047RR below. You know these lights indicate which of the following?Not learned 177. BOTH INTERNATIONAL & INLAND While underway you sight a vessel displaying the shapes shown in illustration D006RR below. What action should you take?Not learned 178. BOTH INTERNATIONAL & INLAND A vessel aground in fog shall sound, in addition to the proper anchor signal, which of the following?Not learned 179. BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are power-driven vessels and crossing as shown in illustration D026RR below. Which statement is TRUE?Not learned 180. BOTH INTERNATIONAL & INLAND A vessel which displays the day signal shown in illustration D006RR below may be engaged in which task?Not learned 181. BOTH INTERNATIONAL & INLAND A vessel is "engaged in fishing" when __________.Not learned 182. BOTH INTERNATIONAL & INLAND A vessel engaged in fishing while at anchor shall sound which fog signal?Not learned 183. BOTH INTERNATIONAL & INLAND You are on a vessel engaged in fishing, other than trawling, and have gear extending more than 150 meters horizontally from the vessel. Which of the shapes shown in illustration D016RR below must you show in the direction of the outlying gear?Not learned 184. BOTH INTERNATIONAL & INLAND Vessels "I" and "II" are power-driven vessels. You are on vessel "I" as shown in illustration D036RR below. In this scenario you are which of the following?Not learned 185. BOTH INTERNATIONAL & INLAND Which vessel should not impede the navigation of a power-driven vessel?Not learned 186. BOTH INTERNATIONAL & INLAND Which vessel may combine her sidelights and stern light in one lantern on the fore and aft centerline of the vessel?Not learned 187. BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.Not learned 188. BOTH INTERNATIONAL & INLAND Which vessel must show a towing light above the stern light?Not learned 189. BOTH INTERNATIONAL & INLAND A vessel nearing a bend where other vessels may be obscured is required to sound which signal?Not learned 190. BOTH INTERNATIONAL & INLAND A vessel is being propelled both by sail and by engines. Under the Rules, the vessel is in which category?Not learned 191. BOTH INTERNATIONAL & INLAND You are on vessel "A" pushing a barge ahead and meeting vessel "B" as shown in illustration D012RR below. How should the vessels pass?Not learned 192. BOTH INTERNATIONAL & INLAND Which vessel(s) is/are required to sound a fog signal of one prolonged followed by two short blasts?Not learned 193. BOTH INTERNATIONAL & INLAND When a vessel signals her distress by means of a gun or other explosive signal, which firing intervals should be used?Not learned 194. BOTH INTERNATIONAL & INLAND Which vessel sounds the same fog signal when underway or at anchor?Not learned 195. BOTH INTERNATIONAL & INLAND A vessel towing astern is severely restricted in its ability to maneuver. Which lights shall it exhibit while underway?Not learned 196. BOTH INTERNATIONAL & INLAND Which vessel is "underway" according to the Rules?Not learned 197. BOTH INTERNATIONAL & INLAND Which vessel is "underway" within the meaning of the Rules?Not learned 198. BOTH INTERNATIONAL & INLAND You are the watch officer on a power-driven vessel and notice a large sailing vessel approaching from astern. Which action should you take?Not learned 199. BOTH INTERNATIONAL & INLAND A white masthead light shows through an arc of how many degrees?Not learned 200. BOTH INTERNATIONAL & INLAND The rules require that a stand-on vessel SHALL take action to avoid collision when she determines that __________.Not learned 201. When steering a vessel, which of the following will an effective helmsman do?Not learned 202. As look-out, you spot an object 45° off your port bow. How should you report the object?Not learned 203. On approaching the English Channel on course 080°T, you note the symbol YBY near a charted buoy. How should you pass this buoy?Not learned 204. What does the helm command "Nothing to the left" mean?Not learned 205. When entering a channel from seaward, which is TRUE concerning the numbers on buoys?Not learned 206. When relieving the helm, the new helmsman should know which of the following before assuming the watch?Not learned 207. Which of the following is a compass card without north-seeking capability that is used for relative bearings?Not learned 208. BOTH INTERNATIONAL & INLAND For the purpose of the Rules, except where otherwise required, the term __________.Not learned 209. The luminous range of a light takes into account which factor?Not learned 210. The nominal range of a light may be accurately defined as the maximum distance at which a light may be seen __________.Not learned 211. Geographic range is the maximum distance at which a light may be seen under which conditions?Not learned