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 blasts212: BOTH INTERNATIONAL & INLAND You see the display of lights shown. This indicates a vessel __________. (DIAGRAM 54 )
Y a. engaged in fishing, making way N b. engaged in fishing, at anchor N c. engaged in trawling, making way N d. on pilotage duty, making way215: INTERNATIONAL ONLY At night you sight the lights shown. What do the lights indicate? (DIAGRAM 66 )
N a. Two vessels pair trawling Y b. A tug with a tow alongside N c. A ship being assisted by a tug N d. A vessel engaged in fishing288: 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 above290: BOTH INTERNATIONAL & INLAND The tow shown is greater 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 )
N a. ball-diamond-ball on the towing vessel N b. diamond on the towing vessel N c. diamond on the barges Y d. All of the above311: INLAND ONLY Identify the operation indicated by the lights exhibited as shown. (DIAGRAM 85 )
N a. Aircraft carrier engaged in the launching and recovery of aircraft N b. A submarine engaged in underway replenishment N c. A vessel aground assisted by tugs Y d. None of the above4090: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when __________.
N a. no vessels are in sight visually N b. no vessels are visible on radar Y c. you are in immediate danger N d. out of sight of land4099: BOTH INTERNATIONAL & INLAND During the day, a dredge will indicate the side on which it is safe to pass by displaying __________.
N a. two balls in a vertical line Y b. two diamonds in a vertical line N c. a single black ball N d. no shape is shown during the day4113: BOTH INTERNATIONAL & INLAND Which signal, other than a distress signal, can be used by a vessel to attract attention?
Y a. Searchlight beam N b. Continuous sounding of a fog signal apparatus N c. Burning barrel N d. Orange smoke signal4195: BOTH INTERNATIONAL & INLAND All of the following vessels are "restricted in their ability to maneuver" EXCEPT a vessel __________.
N a. laying a pipeline N b. dredging N c. mineclearing Y d. not under command4229: BOTH INTERNATIONAL & INLAND You are crossing a narrow channel in a 15-meter vessel when you sight a tankship off your port bow coming up the channel. Which statement is TRUE?
N a. Yours is the give-way vessel because it is less than 30 meters long. Y b. You shall not impede the safe passage of the tankship. N c. The tankship is the stand-on vessel because it is to port of your vessel. N d. The tankship is the stand-on vessel because it is the larger of the two vessels.4241: BOTH INTERNATIONAL & INLAND A tug is towing three manned barges in line in fog. The first vessel of the tow should sound __________.
Y a. no fog signal N b. one short blast N c. one prolonged and three short blasts N d. one prolonged, one short, and one prolonged blast4277: BOTH INTERNATIONAL & INLAND You are underway in a fog when you hear a whistle signal of one prolonged blast followed by two short blasts. This signal could indicate all of the following EXCEPT a vessel __________.
Y a. being towed N b. not under command N c. fishing with trawls N d. towing astern4320: BOTH INTERNATIONAL & INLAND Which vessel shall NOT impede the passage of a vessel which can safely navigate only within a narrow channel or fairway?
N a. A vessel of less than 20 meters in length N b. A vessel sailing N c. A vessel fishing Y d. All of the above4334: BOTH INTERNATIONAL & INLAND In narrow channels, vessels of less than what length shall not impede the safe passage of vessels which can navigate only inside that channel?
Y a. 20 meters N b. 50 meters N c. 65 meters N d. 100 meters4368: BOTH INTERNATIONAL & INLAND In a dense fog you hear a whistle signal ahead of one prolonged blast followed by three short blasts. This signal indicates a __________.
N a. fishing vessel underway trawling Y b. manned vessel being towed N c. pilot vessel underway making a special signal N d. vessel not under command4374: BOTH INTERNATIONAL & INLAND A vessel aground would show the same day-shape as a __________.
N a. vessel towing a submerged object N b. dredge underway and dredging N c. hydrographic survey vessel at anchor and surveying Y d. None of the above4562: BOTH INTERNATIONAL & INLAND In a crossing situation, the vessel which has the other on her own starboard side shall __________.
Y a. if the circumstances of the case admit, avoid crossing ahead of the other N b. change course to port to keep out of the way N c. reduce her speed N d. All of the above4613: BOTH INTERNATIONAL & INLAND Working lights shall be used to illuminate the decks of a vessel __________.
Y a. over 100 meters at anchor N b. not under command N c. constrained by her draft N d. Any of the above4624: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown could be a vessel __________. (DIAGRAM 56 )
N a. towing a barge alongside Y b. underway and laying cable N c. at anchor and dredging N d. underway and carrying dangerous cargo4640: BOTH INTERNATIONAL & INLAND When two power-driven vessels are crossing, which vessel is the stand-on vessel?
Y a. The vessel which is to starboard of the other vessel N b. The vessel which is to port of the other vessel N c. The larger vessel N d. The vessel that sounds the first whistle signal4672: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning the danger signal?
N a. Only the stand-on vessel can sound the danger signal. N b. Radio transmissions may be used in place of the danger signal. Y c. A vessel in doubt as to the other vessel's intentions must sound the danger signal. N d. The danger signal consists of 5 or more prolonged blasts of the whistle.4830: BOTH INTERNATIONAL & INLAND The Navigation Rules define a "vessel not under command" as a vessel which __________.
N a. from the nature of her work is unable to keep out of the way of another vessel N b. does not have a proper look-out N c. by taking action contrary to the Rules has created a special circumstance situation Y d. through some exceptional circumstance is unable to maneuver as required by the Rules4853: BOTH INTERNATIONAL & INLAND You are approaching another vessel on crossing courses. She is about one mile distant and is on your starboard bow. You believe she will cross ahead of you but she sounds a whistle signal of five short blasts. You should __________.
N a. answer the signal and hold course and speed N b. reduce speed slightly N c. initiate a passing signal that will allow for a half mile clearance Y d. make a large course change, and slow down if necessary4870: BOTH INTERNATIONAL & INLAND When do the Rules require both vessels to change course?
N a. Any time the danger signal is sounded N b. When two power-driven vessels are crossing and it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate action Y c. When two power-driven vessels are meeting head-on N d. All of the above8021: 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.8062: INTERNATIONAL ONLY If you sighted three red lights in a vertical line on another vessel at night, it would be a vessel __________.
N a. aground Y b. constrained by her draft N c. dredging N d. moored over a wreck8080: INTERNATIONAL ONLY Which signal is sounded ONLY by a vessel in sight of another?
Y a. One short blast on the whistle N b. Four short blasts on the whistle N c. One prolonged blast on the whistle N d. One short, one prolonged, and one short blast on the whistle8099: 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 draft8111: INTERNATIONAL ONLY Your vessel is backing out of a slip in a harbor. Visibility is restricted. You should sound __________.
Y a. one prolonged blast only N b. one prolonged blast followed by three short blasts when the last line is taken aboard N c. one prolonged blast followed by three short blasts when leaving the slip N d. the danger signal