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.
20: INLAND ONLY Your vessel is proceeding down a channel, and can safely navigate only within the channel. Another vessel is crossing your bow from port to starboard, and you are in doubt as to her intentions. Which statement is TRUE?
N a. The sounding of the danger signal is optional. Y b. The sounding of the danger signal is mandatory. N c. You should sound two short blasts. N d. You should sound one prolonged and two short blasts. 50: INLAND ONLY Vessels "A" and "B" are meeting on a river as shown and will pass about 1/4 mile apart. Which statement is TRUE? (DIAGRAM 29 )
N a. Both vessels should continue on course and pass without sounding any whistle signals. N b. The vessels should exchange two blast whistle signals and pass port to port. Y c. The vessels should exchange two blast whistle signals and pass starboard to starboard. N d. The vessels should pass port to port and must sound whistle signals only if either vessel changes course. 54: INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?
N a. 1 Y b. 2 N c. 3 N d. None 130: INLAND ONLY Your vessel must stay within a narrow channel to be navigated safely. Another vessel is crossing your course from starboard to port. You do NOT think she will pass safely. You are required to __________.
N a. slow to bare steerageway N b. back down N c. sound one short blast to indicate that you are holding course and speed Y d. sound the danger signal 234: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Which color light will vessel "A" observe on vessel "B"? (DIAGRAM 17 )
N a. Green Y b. White N c. Flashing red N d. Yellow over yellow 274: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing, you should __________. (DIAGRAM 81 )
N a. wait until the vessel ahead crosses your bow N b. stop until the red lights turn green Y c. pass between the two sets of vertical red lights N d. proceed leaving all the lights on your starboard side 282: INLAND ONLY While underway you sight the lights shown with the yellow lights flashing. The lights displayed are from a __________. (DIAGRAM 81 )
N a. vessel not under command Y b. dredge pipeline N c. vessel aground N d. vessel engaged in fishing 319: BOTH INTERNATIONAL & INLAND Which dayshape(s) would be displayed by the vessel engaged in the operation indicated by the lights shown. (DIAGRAM 82 )
N a. a cylinder Y b. two cones with apexes together N c. a ball, a diamond and another ball N d. a diamond 356: INTERNATIONAL ONLY Two power-driven vessels are crossing within one half mile of each other as shown. Vessel "A" sounds one short blast of the whistle. This signal means __________. (DIAGRAM 42 )
N a. "I am intend to leave you on my port side" N b. "I intend to intend to overtake you on your port side" Y c. "I am altering my course to starboard" N d. None of the above 4044: BOTH INTERNATIONAL & INLAND You see a vessel's green sidelight bearing due east from you. The vessel might be heading __________.
N a. east (090°) N b. northeast (045°) N c. northwest (315°) Y d. southwest (225°) 4094: BOTH INTERNATIONAL & INLAND You are aboard vessel "A" which is towing on open waters when vessel "B", a sailing vessel, is sighted off your port bow as shown. Which vessel is the stand-on? (DIAGRAM 20 )
N a. Vessel "A" is the stand-on vessel because it is towing. N b. Vessel "A" is the stand-on vessel because it is to starboard of vessel "B". Y c. Vessel "B" is the stand-on vessel because it is sailing. N d. Vessel "B" is the stand-on vessel because it is to port of vessel "A". 4114: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the light used with whistle signals?
N a. Use of such a light is required. N b. The light shall have the same characteristics as a masthead light. Y c. It is only used to supplement short blasts of the whistle. N d. All of the above 4119: BOTH INTERNATIONAL & INLAND A lantern combining a vessel's navigation lights may be shown on a __________.
Y a. 15-meter sailing vessel N b. 20-meter vessel engaged in fishing and making way N c. 25-meter power-driven vessel trolling N d. 25-meter pilot vessel 4182: BOTH INTERNATIONAL & INLAND Distress signals may be __________.
N a. red flares N b. smoke signals N c. sound signals Y d. Any of the above 4208: BOTH INTERNATIONAL & INLAND Five or more short blasts on a vessel's whistle indicates that she is __________.
Y a. in doubt that another vessel is taking sufficient action to avoid a collision N b. altering course to starboard N c. altering course to port N d. the stand-on vessel and will maintain course and speed 4228: BOTH INTERNATIONAL & INLAND When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?
N a. When the two vessels are less than half a mile from each other. Y b. When the give-way vessel is not taking appropriate action to avoid collision. N c. When collision is imminent. N d. The stand-on vessel is never allowed to take action. 4262: BOTH INTERNATIONAL & INLAND A vessel not under command making way at night would show __________.
N a. two all-round red lights in a vertical line N b. anchor lights and sidelights N c. two all-round white lights in a vertical line, sidelights and a stern light Y d. two all-round red lights in a vertical line, sidelights, and a stern light 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 4410: BOTH INTERNATIONAL & INLAND The rules state that vessels may depart from the requirements of the Rules when __________.
N a. there are no other vessels around N b. operating in a narrow channel N c. the Master enters it in the ship's log Y d. necessary to avoid immediate danger 4484: BOTH INTERNATIONAL & INLAND A power-driven vessel at anchor, not fishing or otherwise restricted in its ability to maneuver, sounds her fog signal at intervals of not __________.
Y a. more than one minute N b. more than two minutes N c. more than three minutes N d. less than two minutes 4485: BOTH INTERNATIONAL & INLAND You are underway in reduced visibility. You hear the fog signal of another vessel about 20° on your starboard bow. Risk of collision may exist. You should __________.
N a. alter course to starboard to pass around the other vessel Y b. reduce your speed to bare steerageway N c. slow your engines and let the other vessel pass ahead of you N d. alter course to port to pass the other vessel on its portside 4559: BOTH INTERNATIONAL & INLAND A vessel aground at night is required to show two red lights in a vertical line as well as __________.
N a. not under command lights N b. restricted in her ability to maneuver lights Y c. anchor lights N d. sidelights and a stern light 4632: BOTH INTERNATIONAL & INLAND The Rules state that a seaplane shall __________.
N a. not be regarded as a vessel Y b. in general, keep well clear of all vessels N c. proceed at a slower speed than surrounding vessels N d. when making way, show the lights for a vessel not under command 4700: BOTH INTERNATIONAL & INLAND What does the word "length" refer to?
N a. Length between the perpendiculars Y b. Length overall N c. Waterline length N d. Registered length 4704: BOTH INTERNATIONAL & INLAND The masthead light may be located at other than the fore and aft centerline on a vessel __________.
N a. less than 50 meters in length N b. less than 20 meters in length Y c. of special construction N d. engaged in trolling 4710: BOTH INTERNATIONAL & INLAND Which vessel would exhibit sidelights when underway and not making way?
N a. A vessel engaged in fishing N b. A vessel not under command N c. A vessel engaged in dredging Y d. A power-driven vessel 8069: INTERNATIONAL ONLY Which signal is sounded ONLY by a vessel in sight of another and NOT in or near an area of restricted visibility?
N a. Four short blasts on the whistle N b. One prolonged blast on the whistle Y c. One short blast on the whistle N d. One short, one prolonged, and one short blast on the whistle 8071: INTERNATIONAL ONLY Which vessel is NOT regarded as being "restricted in her ability to maneuver"?
N a. A vessel servicing an aid to navigation N b. A vessel engaged in dredging N c. A towing vessel with tow unable to deviate from its course Y d. A vessel constrained by her draft 8127: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?
N a. A vessel constrained by her draft shall keep out of the way of a vessel engaged in fishing. 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 avoid impeding the safe passage of a vessel constrained by her draft. N d. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver.