This is an interactive test. Read each question and select the proper answer by clicking on the appropriate answer. If a "Y" appears, your choice is correct. If a "N" appears, more study may be in order.
22: 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 __________.
N a. sound one short blast N b. sound two short blasts N c. change course to starboard Y d. None of the above 31: INLAND ONLY At night, a light signal consisting of two flashes by a vessel indicates __________.
N a. an intention to communicate over radiotelephone N b. that the vessel is in distress N c. an intention to leave another vessel to port Y d. an intention to leave another vessel to starboard 144: INLAND ONLY A light used to signal passing intentions must be an __________.
N a. all-round yellow light only N b. all-round white light only N c. alternating red and yellow light Y d. all-round white or yellow light 200: INLAND ONLY A partially submerged object towed by a vessel must show during the day one __________.
Y a. diamond shape regardless of length of the tow N b. diamond shape only when the length of the tow exceeds 200 meters in length N c. black ball N d. black ball only when the length of the tow exceeds 200 meters in length 313: INLAND ONLY You see the lights shown while proceeding in a channel. Where should you pass? (DIAGRAM 85 )
Y a. A N b. B N c. C N d. D 330: BOTH INTERNATIONAL & INLAND Diagram "B" shows the arc of visibility of a __________. (DIAGRAM 23 )
N a. white masthead light Y b. green sidelight N c. red sidelight N d. stern light 332: BOTH INTERNATIONAL & INLAND Diagram "A" shows the arc of visibility of a __________. (DIAGRAM 23 )
Y a. red sidelight N b. green sidelight N c. masthead light N d. stern light 361: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds two short blasts on the whistle. You are on vessel "B" and are in doubt that sufficient action is being taken by vessel "A" to avoid collision. You should __________. (DIAGRAM 42 )
N a. maintain course and speed N b. alter course to the left and increase speed Y c. sound five or more short and rapid blasts N d. None of the above 4024: BOTH INTERNATIONAL & INLAND The word "vessel", in the Rules, includes __________.
N a. sailing ships N b. nondisplacement craft N c. seaplanes Y d. All of the above 4125: BOTH INTERNATIONAL & INLAND If you saw flames aboard a vessel but could see the vessel was not on fire, you would know that the __________.
N a. crew was trying to get warm Y b. vessel required immediate assistance N c. vessel was attempting to attract the attention of a pilot boat N d. vessel was being illuminated for identification by aircraft 4181: BOTH INTERNATIONAL & INLAND According to the Rules, which vessel is NOT "restricted in her ability to maneuver"?
N a. A vessel servicing a navigation marker Y b. A sailing vessel N c. A vessel mineclearing N d. A vessel dredging 4206: BOTH INTERNATIONAL & INLAND At night, a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two __________.
N a. red lights N b. red lights and two white lights Y c. red lights with a white light in between N d. white lights with a red light in between 4215: BOTH INTERNATIONAL & INLAND An inconspicuous, partly submerged vessel or object being towed, where the length of tow is 100 meters, shall show __________.
N a. yellow lights at each end N b. two red lights in a vertical line N c. a black ball Y d. a diamond shape 4218: BOTH INTERNATIONAL & INLAND A vessel displaying the day signal shown is __________. (DIAGRAM 7 )
Y a. not under command N b. a dredge underway and dredging N c. fishing N d. a hydrographic survey vessel underway 4352: BOTH INTERNATIONAL & INLAND What is the minimum vessel length which must show two white masthead lights, one forward and one aft, when underway at night?
N a. 7 meters N b. 20 meters Y c. 50 meters N d. 100 meters 4437: BOTH INTERNATIONAL & INLAND What is the minimum length of an anchored vessel which is required to show a white light both forward and aft?
Y a. 50 meters N b. 100 meters N c. 150 meters N d. 200 meters 4489: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a vessel of 150 meters in length, at anchor?
N a. She may show an all-round white light where it can best be seen. Y b. She must show all-round white lights forward and aft. N c. The showing of working lights is optional. N d. None of the above 4522: BOTH INTERNATIONAL & INLAND When a vessel sounds three short blasts on the whistle, this indicates that __________.
N a. danger is ahead Y b. her engines are going astern N c. the vessel is not under command (broken down) N d. all other vessels should stand clear 4525: BOTH INTERNATIONAL & INLAND Sailing vessels are stand-on over power-driven vessels except __________.
N a. in a crossing situation N b. in a meeting situation Y c. when they are the overtaking vessel N d. on the inland waters of the U.S. 4622: BOTH INTERNATIONAL & INLAND The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within __________.
N a. the distance of visibility N b. 1/2 the distance of visibility Y c. a distance appropriate to the existing circumstances and conditions N d. the distance that it would require for the propeller to go from full ahead to full astern 4668: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds three short blasts on the whistle. This signal means that vessel "A" __________. (DIAGRAM 42 )
N a. intends to hold course and speed N b. is uncertain about the actions of "B" N c. proposes to cross ahead of the other vessel Y d. is backing engines 4681: BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.
N a. are not the same color as either side light N b. have a lesser range of visibility than the prescribed lights Y c. do not impair the visibility or distinctive character of the prescribed lights N d. All of the above 4729: BOTH INTERNATIONAL & INLAND Which statement is TRUE, according to the Rules?
N a. A vessel engaged in fishing shall keep out of the way of a sailing vessel. Y b. A vessel engaged in fishing while underway shall, so far as possible, keep out of the way of a vessel restricted in her ability to maneuver. N c. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver. N d. A vessel not under command shall keep out of the way of a vessel engaged in fishing. 4857: BOTH INTERNATIONAL & INLAND A vessel approaching a narrow channel shall __________.
Y a. avoid crossing the channel if it impedes another vessel navigating in the channel N b. not overtake any vessels within the channel N c. keep as close as possible to the edge of the channel on her port side N d. anchor only in the middle of the channel 6500: BOTH INTERNATIONAL & INLAND A towing vessel and her tow are severely restricted in their ability to change course. When making way, the towing vessel will show ONLY __________.
N a. the masthead lights for a towing vessel N b. the lights for a vessel restricted in her ability to maneuver N c. sidelights, stern light, and towing light Y d. All of the above. 8001: INTERNATIONAL ONLY In addition to other required lights, a power-driven vessel pushing ahead or towing alongside displays __________.
N a. two all-round red lights in a vertical line N b. two yellow towing lights in a vertical line Y c. two white masthead lights in a vertical line N d. two lights on the stern, one yellow and one white 8020: INTERNATIONAL ONLY A vessel not under command sounds the same fog signal as a vessel __________.
N a. towing N b. constrained by her draft N c. under sail Y d. All of the above 8022: INTERNATIONAL ONLY You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made. You should __________.
N a. hold course and sound a two blast whistle signal Y b. hold course and sound no whistle signal N c. change course to the right and sound one blast N d. hold course and sound two prolonged and two short blasts 8063: INTERNATIONAL ONLY On open water two vessels are in an overtaking situation. The overtaking vessel has just sounded one short blast on the whistle. What is the meaning of this whistle signal?
N a. "I request permission to pass you on my port side." N b. "I will maintain course and speed and pass you on your starboard side." N c. "On which side should I pass?" Y d. "I am changing course to starboard." 8099: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.
N a. restricted in her ability to maneuver N b. not under command N c. engaged in mineclearing operations Y d. constrained by her draft