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.
101: 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. Your first whistle signal should be __________.
Y a. one short blast N b. two short blasts N c. two prolonged blasts followed by one short blast N d. two prolonged blasts followed by two short blasts 114: INLAND ONLY At night, what lights are required on barges moored in a group formation more than two barges wide?
N a. All-round yellow lights placed at the corners of each barge in the group N b. Two yellow lights in a vertical line at the corner extremities of the group Y c. Two unobstructed all-round white lights N d. Two unobstructed all-round red lights 120: INLAND ONLY What shall be used to indicate the presence of a partly submerged object being towed?
N a. A black cone, apex downward Y b. An all-round white light at each end of the tow N c. A flare-up light N d. All of the above 139: INTERNATIONAL ONLY Which day-shape must you show on the forward end of an inconspicuous partially submerged vessel or object being towed more than 200 meters in length? (DIAGRAM 16 )
N a. A Y b. B N c. D N d. No day-shape must be shown. 166: BOTH INTERNATIONAL & INLAND You are on a vessel heading due north and see the lights shown one point on your port bow. This vessel could be heading __________. (DIAGRAM 51 )
Y a. SE N b. NE N c. SW N d. NW 226: INLAND ONLY While underway and in sight of another vessel a mile ahead you put your engines on astern propulsion. Which statement concerning whistle signals is TRUE?
N a. You must sound three short blasts on the whistle. N b. You must sound one blast if backing to starboard. N c. You must sound whistle signals only if the vessels are meeting. Y d. You need not sound any whistle signals. 252: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. Which action should the vessels take? (DIAGRAM 41 )
Y a. The vessels should continue on course and pass without sounding any whistle signals. N b. The vessels should exchange two blast whistle signals and pass starboard to starboard. N c. The vessels should exchange one blast whistle signals and pass starboard to starboard. N d. The vessel with the tow should initiate the whistle signals. 386: INLAND ONLY Which statement is TRUE concerning the fog signal of a barge 35 meters in length, anchored in a "special anchorage area" approved by the Secretary?
N a. The vessel shall ring a bell for 5 seconds every minute. Y b. The vessel is not required to sound a fog signal. N c. The vessel shall sound one blast of the whistle every 2 minutes. N d. The vessel shall sound three blasts on the whistle every 2 minutes. 4138: BOTH INTERNATIONAL & INLAND A vessel may use any sound or light signals to attract the attention of another vessel as long as __________.
N a. white lights are not used N b. red and green lights are not used N c. the vessel signals such intentions over the radiotelephone Y d. the signal cannot be mistaken for a signal authorized by the Rules 4143: BOTH INTERNATIONAL & INLAND Which statement is true concerning a towing light when a towing vessel is towing astern?
N a. When a towing light is shown, no stern light is necessary. N b. When a stern light is shown, no towing light is necessary. N c. The towing light is shown below the stern light. Y d. The towing light is shown above the stern light. 4160: BOTH INTERNATIONAL & INLAND A fog signal of one short, one prolonged, and one short blast may be sounded by a __________.
Y a. vessel at anchor N b. vessel not under command N c. vessel towing N d. All of the above 4174: BOTH INTERNATIONAL & INLAND A vessel sounding a fog signal of one short, one prolonged, and one short blast is indicating that the vessel is __________.
N a. fishing N b. in distress Y c. at anchor N d. not under command 4175: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is __________. (DIAGRAM 57 )
Y a. restricted in her ability to maneuver and not making way N b. engaged in fishing and not making way N c. a pilot vessel underway and making way on pilotage duty N d. towing and making way 4201: BOTH INTERNATIONAL & INLAND A power-driven vessel towing astern shall show __________.
N a. two towing lights in a vertical line Y b. a towing light in a vertical line above the stern light N c. two towing lights in addition to the stern light N d. a small white light in lieu of the stern light 4204: BOTH INTERNATIONAL & INLAND Fog signals, required under the Rules for vessels underway, shall be sounded __________.
N a. only on the approach of another vessel N b. only when vessels are in sight of each other N c. at intervals of not more than one minute Y d. at intervals of not more than two minutes 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 4211: BOTH INTERNATIONAL & INLAND In order for a stand-on vessel to take action in a situation, she must determine that the other vessel __________.
N a. is restricted in her ability to maneuver N b. has sounded the danger signal Y c. is not taking appropriate action N d. has not changed course since risk of collision was determined 4301: BOTH INTERNATIONAL & INLAND In which situation would risk of collision definitely exist?
N a. A vessel is 22 degrees on your port bow, range increasing, bearing changing slightly to the right. N b. A vessel is broad on your starboard beam, range decreasing, bearing changing rapidly to the right. N c. A vessel is 22 degrees abaft your port beam, range increasing, bearing is constant. Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant. 4323: BOTH INTERNATIONAL & INLAND A vessel displaying ONLY the lights shown is a __________. (DIAGRAM 53 )
Y a. vessel engaged on pilotage duty underway N b. vessel engaged in fishing N c. vessel under sail N d. power-driven vessel underway 4390: BOTH INTERNATIONAL & INLAND What lights must sailboats show when underway at night?
N a. One all-round white light N b. A stern light N c. Red and green sidelights Y d. Red and green sidelights and a stern light 4443: BOTH INTERNATIONAL & INLAND Which statement is TRUE in an overtaking situation?
N a. An overtaking situation exists when one vessel is approaching another vessel from anywhere abaft the beam. N b. It is the duty of the vessel being overtaken to get out of the way. Y c. Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel. N d. All of the above 4453: BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are crossing as shown. Which statement is TRUE? (DIAGRAM 30 )
N a. The vessels should pass starboard to starboard. N b. Vessel "B" should pass astern of vessel "A". N c. Vessel "B" should alter course to the right. Y d. Vessel "A" must keep clear of vessel "B". 4490: BOTH INTERNATIONAL & INLAND Which vessel would be required to show a white light from a lantern exhibited in sufficient time to prevent collision?
N a. A 9-meter sailing vessel Y b. A rowboat N c. A 6-meter motorboat N d. A small vessel fishing 4558: BOTH INTERNATIONAL & INLAND The stern light shall be positioned such that it will show from dead astern to how many degrees on each side of the stern of the vessel?
N a. 22.5° Y b. 67.5° N c. 112.5° N d. 135.0° 4595: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, would NOT be required to show anchor lights?
N a. A power-driven vessel N b. A vessel on pilotage duty Y c. A vessel dredging N d. A vessel restricted in her ability to maneuver 4734: BOTH INTERNATIONAL & INLAND A vessel may use any sound or light signals to attract the attention of another vessel as long as __________.
N a. white lights are not used N b. red and green lights are not used Y c. the signal cannot be mistaken for a signal authorized by the Rules N d. the vessel signals such intentions over the radiotelephone 4835: BOTH INTERNATIONAL & INLAND The word "vessel", in the Rules, includes __________.
N a. a barge permanently affixed to the shore Y b. nondisplacement craft N c. a drilling unit attached to the Outer Continental Shelf N d. All of the above 8010: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.
N a. not under command N b. aground N c. dredging Y d. constrained by her draft 8018: INTERNATIONAL ONLY On open water, a power-driven vessel coming up dead astern of another vessel and altering her course to starboard so as to pass on the starboard side of the vessel ahead would sound __________.
N a. two short blasts Y b. one short blast N c. two prolonged blasts followed by one short blast N d. one long and one short blast 8100: INTERNATIONAL ONLY The International Rules of the Road apply __________.
N a. to all waters N b. to any waters inside the territorial waters of the U.S. N c. only to waters where foreign vessels travel Y d. upon the high seas and connecting waters navigable by seagoing vessels