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.
30: 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?
N a. 2 short blasts N b. 1 blast Y c. 3 short blasts N d. 4 blasts 45: INLAND ONLY You are overtaking another power-driven vessel in a narrow channel, and you wish to overtake on the other vessel's port side. You will sound a whistle signal of __________.
N a. one short blast Y b. two short blasts N c. two prolonged blasts followed by one short blast N d. two prolonged blasts followed by two short blasts 175: BOTH INTERNATIONAL & INLAND You see the display of lights shown. They indicate a vessel __________. (DIAGRAM 71 )
N a. trawling Y b. approaching head-on N c. fishing with nets extending more than 150 meters N d. dredging 238: BOTH INTERNATIONAL & INLAND Vessels "A" and "B" are meeting in a narrow channel as shown but are not in sight of one another due to restricted visibility. Which statement is TRUE concerning whistle signals between the vessels? (DIAGRAM 29 )
N a. Both vessels should sound two short blasts. N b. Both vessels should sound one short blast. N c. Vessel "A" should sound one short blast and vessel "B" should sound two short blasts. Y d. None of the above statements is TRUE. 265: INTERNATIONAL ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a vessel engaged in fishing. The vessels will pass within 1/2 mile of each other. Which action should you take? (DIAGRAM 36 )
N a. Hold course and speed without giving a signal. N b. Sound the danger signal and slow to moderate speed. Y c. Sound one short blast, turn to starboard. N d. Sound one short blast and hold course and speed. 284: 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 aground N b. mine clearance vessel N c. vessel not under command Y d. dredge pipeline 4083: BOTH INTERNATIONAL & INLAND All of the following are distress signals EXCEPT __________.
N a. the continuous sounding of any fog signal apparatus Y b. giving five or more short and rapid blasts of the whistle N c. firing a gun at intervals of about a minute N d. a barrel with burning oil in it, on deck 4089: BOTH INTERNATIONAL & INLAND A vessel engaged in mineclearing shows special identity lights __________.
N a. in addition to the lights required for a power-driven vessel N b. which mean that other vessels should not approach within 1000 meters of the mineclearing vessel N c. which are green and show all-round Y d. All of the above 4145: BOTH INTERNATIONAL & INLAND You are in charge of a 120-meter power-driven vessel at anchor in fog, sounding the required anchor signals. You hear the fog signal of a vessel underway off your port bow. You may sound __________.
N a. at least five short and rapid blasts N b. two short blasts Y c. one short, one prolonged, and one short blast N d. three short blasts 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 4188: 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. You may sound __________.
N a. one prolonged, one short and one prolonged N b. two short blasts Y c. one short, one prolonged, and one short blast N d. one prolonged blast 4309: BOTH INTERNATIONAL & INLAND What day-shape must be shown on a partly submerged vessel which is being towed?
Y a. A diamond N b. A cone N c. One black ball N d. Two black balls in a vertical line 4318: BOTH INTERNATIONAL & INLAND Which is NOT a distress signal?
N a. Flames on a vessel Y b. Vertical motion of a white lantern at night N c. Code flags "November" and "Charlie" N d. Dye marker on the water 4413: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning a 75-meter power-driven vessel underway at night?
N a. She must exhibit an all-round white light at the stern. Y b. She must exhibit forward and after masthead lights. N c. She must exhibit only a forward masthead light. N d. She may exhibit a red light over a green light forward. 4419: BOTH INTERNATIONAL & INLAND A vessel 25 meters in length must have which sound signaling appliance onboard?
N a. None is required N b. Whistle only Y c. Whistle and bell only N d. Whistle, bell, and gong 4504: BOTH INTERNATIONAL & INLAND While underway in a narrow channel, a vessel should stay __________.
N a. in the middle of the channel Y b. to the starboard side of the channel N c. to the port side of the channel N d. to the side of the channel that has the widest bends 4508: BOTH INTERNATIONAL & INLAND Which vessel may carry her sidelights and stern light in a combined lantern on the mast?
Y a. An 18-meter sailing vessel N b. A 10-meter sailing vessel also being propelled by machinery N c. A 25-meter sailing vessel N d. All of the above 4520: BOTH INTERNATIONAL & INLAND When anchoring a 20-meter vessel at night, you must show __________.
Y a. one all-round white light N b. two all-round white lights N c. one all-round white light and the stern light N d. one all-round white light and a flare up light 4541: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from 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 4573: BOTH INTERNATIONAL & INLAND A power-driven vessel shows the same lights as a __________.
N a. vessel engaged in towing, when not underway N b. vessel towing astern N c. sailing vessel Y d. pushing vessel and a vessel being pushed, when they are rigidly connected in a composite unit 4614: BOTH INTERNATIONAL & INLAND Which vessel may show identifying lights when not actually engaged in her occupation?
N a. A fishing vessel N b. A pilot vessel N c. A mineclearance vessel Y d. None of the above 4626: BOTH INTERNATIONAL & INLAND A vessel being towed astern, where the length of the tow exceeds 200 meters, will exhibit __________.
N a. two balls in a vertical line Y b. a diamond shape where it can best be seen N c. a ball on each end of the tow N d. no day-shape 4677: BOTH INTERNATIONAL & INLAND You are on vessel "A", as shown and hear vessel "B" sound a signal indicating his intention to overtake you. You feel it is not safe for vessel "B" to overtake you at the present time. You should __________. (DIAGRAM 32 )
N a. sound two short blasts Y b. sound five or more short and rapid blasts N c. not answer the whistle signal from vessel "B" N d. sound three blasts of the whistle 4678: 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?
Y a. Intermittent flashing amber (yellow) beacon for submarines N b. Green masthead and yardarm lights indicating mine clearance operations N c. Red-white-red lights in a vertical line for a carrier, launching aircraft N d. Yellow flares indicating torpedo firing exercises 4745: BOTH INTERNATIONAL & INLAND You are approaching a narrow channel. Another vessel in the channel can only be navigated safely in that channel. You should __________.
N a. hold your course and speed if he is on your port bow N b. sound three short blasts, and take all way off your vessel Y c. not cross the channel if you might impede the other vessel N d. sound two prolonged blasts followed by one short blast 4829: BOTH INTERNATIONAL & INLAND The term "restricted visibility", when used in the Rules, refers to __________.
N a. situations when you can see vessels on radar that you cannot see visually N b. visibility of less than half a mile Y c. any condition where visibility is restricted N d. visibility where you cannot see shore 8021: INTERNATIONAL ONLY Your vessel is crossing a narrow channel. A vessel to port is within the channel and crossing your course. She is showing a black cylinder. What is your responsibility?
N a. Hold your course and speed. N b. Sound the danger signal. N c. Begin an exchange of passing signals. Y d. Do not cross the channel if you might impede the other vessel. 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 8077: INTERNATIONAL ONLY Vessel "A" is overtaking vessel "B" on open waters and will pass without changing course. Vessel "A" should __________.
N a. sound two prolonged blasts followed by two short blasts N b. sound the danger signal Y c. not sound any whistle signals N d. sound one long blast 8121: INTERNATIONAL ONLY Which statement is TRUE, according to the Rules?
Y a. 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 b. A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver. N c. A fishing vessel while underway has the right-of-way over a vessel constrained by her draft. N d. A vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft.