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.
34: 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"?
Y a. 2 N b. 1 N c. 3 N d. None 128: BOTH INTERNATIONAL & INLAND You are on a sailing vessel. While under sail you decide to use your engine to assist in propulsion. Which day signal would you show? (DIAGRAM 16 )
N a. D N b. C N c. B Y d. None of these day signals are correct. 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. 164: BOTH INTERNATIONAL & INLAND You are on a vessel heading due south and see the lights shown one point on your port bow. This vessel could be heading __________. (DIAGRAM 51 )
N a. SE N b. NE Y c. NW N d. SW 256: INTERNATIONAL ONLY Vessels "A" and "B" are meeting on a river as shown and will pass 1/4 mile apart. If you are on vessel "A", in addition to the sidelight, which other light(s) will you see on vessel "B"? (DIAGRAM 41 )
N a. special flashing yellow light Y b. two white masthead lights in a vertical line N c. two yellow towing lights N d. None of the above 288: BOTH INTERNATIONAL & INLAND The tow shown is less than 200 meters in length and severely restricted in her ability to deviate from her course. Which dayshape(s) would be displayed by day from the vessel(s)? (DIAGRAM 24 )
Y a. ball-diamond-ball on the towing vessel N b. diamond on the towing vessel N c. diamond on the last barge N d. All of the above 335: BOTH INTERNATIONAL & INLAND Diagram "C" shows the arc of visibility of a __________. (DIAGRAM 23 )
N a. yellow flashing light N b. red sidelight N c. green sidelight Y d. None of the above 365: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. Vessel "B" is the __________. (DIAGRAM 42 )
Y a. stand-on vessel N b. give-way vessel N c. overtaking vessel N d. None of the above 4046: BOTH INTERNATIONAL & INLAND You are underway on vessel "A" and sight vessel "B" which is a vessel underway and fishing as shown. Which statement is true? (DIAGRAM 14 )
N a. Vessel "A" must keep out of the way of vessel "B" because "B" is to port. Y b. Vessel "A" must keep out of the way of vessel "B" because "B" is fishing. N c. Vessel "B" must keep out of the way of vessel "A" because "A" is to starboard. N d. In this case, both vessels are required by the Rules to keep clear of each other. 4164: BOTH INTERNATIONAL & INLAND While underway in fog you hear a whistle signal consisting of one prolonged blast followed immediately by two short blasts. This signal is sounded in fog by __________.
N a. vessels at anchor, not engaged in fishing Y b. vessels underway and towing N c. vessels in danger N d. pilot vessels 4202: BOTH INTERNATIONAL & INLAND You are underway in fog when you hear the following signal: one short blast, one prolonged blast and one short blast in succession. Which of the following would it be?
N a. A sailing vessel underway with the wind abaft the beam N b. A power-driven vessel underway and making way through the water Y c. A vessel at anchor N d. A vessel towing 4205: BOTH INTERNATIONAL & INLAND A towing vessel is towing two barges astern. The length of the tow from the stern of the tug to the stern of the last barge is 250 meters. The towing vessel is 45 meters in length. How many white masthead lights should be displayed on the tugboat at night?
N a. 1 N b. 2 Y c. 3 N d. 4 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 4272: BOTH INTERNATIONAL & INLAND A power-driven vessel, when towing another vessel astern shall show the light(s) in Diagram __________. (DIAGRAMS 46, 54, 60 )
N a. 75 Y b. 60 N c. 54 N d. 46 4297: BOTH INTERNATIONAL & INLAND Which requirement must be met in order for a stand-on vessel to take action to avoid collision?
Y a. Risk of collision must exist. N b. The give-way vessel must have taken action first. N c. The vessels must be within half a mile of each other. N d. There are no requirements to be met. The stand-on vessel may take action anytime. 4395: BOTH INTERNATIONAL & INLAND The lights displayed indicate a __________. (DIAGRAM 73 )
N a. fishing vessel trolling N b. vessel laying submarine cable Y c. vessel towing astern N d. vessel dredging 4503: BOTH INTERNATIONAL & INLAND Which vessel must show a masthead light abaft of and higher than her identifying lights?
N a. A 55-meter vessel fishing Y b. A 55-meter vessel trawling N c. A 100-meter vessel not under command N d. A 20-meter vessel engaged on pilotage duty 4528: BOTH INTERNATIONAL & INLAND Which vessel is to sound a fog signal of one prolonged followed by two short blasts?
N a. A vessel not under command N b. A sailing vessel, underway N c. A vessel restricted in her ability to maneuver when carrying out her work at anchor Y d. All of the above 4537: BOTH INTERNATIONAL & INLAND Vessel "A" is on course 000°T. Vessel "B" is on a course such that she is involved in a head-on situation and is bearing 355°T, 2 miles away from vessel "A". To ensure a safe passing, vessel "A" should __________.
N a. maintain course N b. alter course to port N c. alter course to ensure a starboard to starboard passing Y d. maneuver to ensure a port to port passing 4550: BOTH INTERNATIONAL & INLAND Which statement concerning an overtaking situation is correct?
N a. The overtaking vessel is the stand-on vessel. N b. Neither vessel is the stand-on vessel. N c. The overtaking vessel must maintain course and speed. Y d. The overtaking vessel must keep out of the way of the other. 4657: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing or risk of collision exists. If so, she shall __________.
N a. sound the danger signal N b. when taking action, make only course changes Y c. avoid altering course toward a vessel abaft the beam N d. All of the above 4675: BOTH INTERNATIONAL & INLAND In a meeting situation, which vessel may sound the danger signal?
N a. Stand-on vessel N b. Give-way vessel Y c. Either vessel N d. Neither vessel 4709: BOTH INTERNATIONAL & INLAND At night, a vessel displaying the lights shown is __________. (DIAGRAM 52 )
N a. aground Y b. underway N c. at anchor N d. transferring dangerous cargo 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 4730: INLAND ONLY Which of the following signals may be exhibited by a vessel trawling in close proximity to other fishing vessels?
Y a. Two white lights in a vertical line N b. A red light over a white light in a vertical line N c. Two fixed yellow lights in a vertical line N d. All of the above 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 8056: INTERNATIONAL ONLY A whistle signal of one prolonged, one short, one prolonged and one short blast, is sounded by a vessel __________.
N a. at anchor N b. towing a submerged object Y c. being overtaken in a narrow channel N d. in distress 8059: INTERNATIONAL ONLY You are in sight of a power-driven vessel that sounds two short blasts of the whistle. This signal means that the vessel __________.
Y a. is altering course to port N b. is altering course to starboard N c. intends to leave you on her port side N d. intends to leave you on her starboard side 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 8104: INTERNATIONAL ONLY Your vessel is constrained by her draft and operating in a narrow channel. Another vessel is crossing your course from starboard to port. You are in doubt as to her intentions. According to Rule 9, you __________.
N a. should sound one short blast to indicate that you are holding course and speed N b. must sound one prolonged blast Y c. may sound the danger signal N d. are required to back down