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.
24: BOTH INTERNATIONAL & INLAND Which of the day-shapes shown would you show on the after end of an inconspicuous partially submerged vessel or object being towed less than 200 meters in length? (DIAGRAM 16 )
N a. A Y b. B N c. C N d. No day-shape would be shown. 63: INLAND ONLY A vessel of less than 20 meters in length at anchor at night in a "special anchorage area designated by the Secretary" __________.
N a. must show one white light Y b. need not show any lights N c. must show two white lights N d. need show a light only on the approach of another vessel 97: INLAND ONLY Which statement is TRUE concerning a passing agreement made by radiotelephone?
N a. Such an agreement is prohibited by the Rules. N b. A vessel which has made such an agreement must also sound whistle signals. N c. Whistle signals must still be exchanged when passing within half a mile of each other. Y d. If agreement is reached by radiotelephone, whistle signals are optional. 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 135: BOTH INTERNATIONAL & INLAND You are on a 30-meter trawler. Which day signal must you show while trawling? (DIAGRAM 16 )
N a. A N b. B Y c. C N d. None of these day signals are correct. 154: BOTH INTERNATIONAL & INLAND You are underway at night and you sight the lights shown. You know these lights indicate a __________. (DIAGRAM 47 )
Y a. sailing vessel N b. trawler dragging nets N c. vessel engaged in mine clearance N d. dredge at work 250: INLAND ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a power-driven vessel engaged in fishing that will pass within 1/2 a mile of your vessel. You sound one short blast on the whistle. Vessel "II" does not sound any signal. Which action should you take? (DIAGRAM 36 )
N a. Hold course and speed without giving a signal. Y b. Sound the danger signal and reduce speed. N c. Sound one short blast, reduce speed and turn to starboard. N d. Sound two short blasts and change course to port. 263: INTERNATIONAL ONLY You are on a power-driven vessel "I" as shown. Vessel "II" is a vessel engaged in fishing within 1/2 a mile of your vessel. Which action should you take? (DIAGRAM 36 )
N a. Hold course and speed without giving a signal. Y b. Change course or speed to avoid vessel "II". N c. Sound one short blast, and await a response. N d. Sound two short blasts, and await a response. 314: INLAND ONLY Identify the operation indicated by the lights shown. (DIAGRAM 85 )
N a. An aircraft carrier engaged in the launching and recovery of aircraft N b. A submarine engaged in underway replenishment at sea Y c. A dredge engaged in dredging operations N d. A vessel aground assisted by tugs 332: BOTH INTERNATIONAL & INLAND Diagram "A" shows the arc of visibility of a __________. (DIAGRAM 23 )
Y a. red sidelight N b. green sidelight N c. masthead light N d. stern light 4100: BOTH INTERNATIONAL & INLAND A 45-meter vessel is pulling a 210-meter tow. She may exhibit __________.
N a. a masthead light forward, and two masthead lights in a vertical line aft Y b. three masthead lights forward and one aft N c. two masthead lights forward and no after masthead light N d. three masthead lights aft and none forward 4116: BOTH INTERNATIONAL & INLAND The towing light is a(n) __________.
N a. flashing amber light Y b. yellow light with the same characteristics as the stern light N c. all-round yellow light N d. yellow light with the same characteristics as the masthead light 4127: BOTH INTERNATIONAL & INLAND A vessel will NOT show sidelights when __________.
N a. underway but not making way N b. making way, not under command Y c. not under command, not making way N d. trolling underway 4130: BOTH INTERNATIONAL & INLAND The duration of each blast of the whistle signals used in meeting and crossing situations is __________.
Y a. about 1 second N b. 2 or 4 seconds N c. 4 to 6 seconds N d. 8 to 10 seconds 4161: BOTH INTERNATIONAL & INLAND A continuous sounding of a fog-signal apparatus indicates __________.
Y a. the vessel is in distress N b. the vessel has completed loading dangerous cargo N c. it is safe to pass N d. the vessel is anchored 4170: BOTH INTERNATIONAL & INLAND A 20-meter vessel is towing another vessel astern. The length of the tow from the stern of the towing vessel to the stern of the tow is 75 meters. How many white towing masthead lights shall the towing vessel show at night?
N a. 1 Y b. 2 N c. 3 N d. 4 4213: BOTH INTERNATIONAL & INLAND Which statement concerning whistle signals is FALSE?
N a. When a pushing vessel and a vessel pushed are connected in a composite unit, the unit sounds the fog signal of a power-driven vessel. N b. A vessel at anchor may sound one short, one prolonged, and one short blast. N c. A pilot vessel may sound an identity signal on the whistle. Y d. A vessel engaged in towing in fog shall sound a fog signal at intervals of one minute. 4219: BOTH INTERNATIONAL & INLAND Your 15-meter vessel is crossing a narrow channel and a large cargo vessel to port is within the channel and crossing your course. You must __________.
N a. hold course and speed N b. sound the danger signal N c. initiate an exchange of passing signals Y d. do not cross the channel if you might impede the other vessel 4304: BOTH INTERNATIONAL & INLAND A vessel being towed will show __________.
N a. a forward masthead light Y b. sidelights and a stern light N c. a towing light N d. All of the above 4322: BOTH INTERNATIONAL & INLAND In which situation do you think a risk of collision exists?
N a. A vessel is 22° 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° abaft your port beam, range increasing, bearing is constant. Y d. A vessel is on your starboard quarter, range decreasing, bearing is constant. 4352: BOTH INTERNATIONAL & INLAND What is the minimum vessel length which must show two white masthead lights, one forward and one aft, when underway at night?
N a. 7 meters N b. 20 meters Y c. 50 meters N d. 100 meters 4404: BOTH INTERNATIONAL & INLAND A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to change course shall, when making way, exhibit __________.
N a. the masthead lights for a towing vessel N b. the lights for a vessel restricted in its ability to maneuver N c. sidelights, stern light and towing light Y d. All of the above 4448: BOTH INTERNATIONAL & INLAND Vessel "A" is underway and pushing ahead when vessel "B" is sighted off the starboard bow as shown. Which statement is TRUE? (DIAGRAM 5 )
N a. Vessel "A" is the stand-on vessel because it is to the port side of vessel "B". N b. Vessel "A" is the stand-on vessel because it is pushing ahead. Y c. Vessel "B" is the stand-on vessel because it is to starboard of vessel "A". N d. Neither vessel is the stand-on vessel. 4570: BOTH INTERNATIONAL & INLAND Which signal may at some time be exhibited by a vessel trawling?
N a. Two white lights in a vertical line N b. A white light over a red light in a vertical line N c. Two red lights in a vertical line Y d. All of the above 4572: BOTH INTERNATIONAL & INLAND You are underway in low visibility and sounding fog signals. What changes would you make in the fog signal immediately upon losing propulsion?
N a. Begin sounding two prolonged blasts at two-minute intervals. N b. Begin sounding one prolonged blast followed by three short blasts at two-minute intervals. Y c. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals. N d. No change should be made in the fog signal. 4654: BOTH INTERNATIONAL & INLAND A vessel engaged in fishing shall keep out of the way of a vessel __________.
N a. under sail Y b. restricted in her ability to maneuver N c. crossing a channel N d. All of the above 4682: BOTH INTERNATIONAL & INLAND A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights __________.
N a. do not interfere with the keeping of a proper look-out N b. do not impair the visibility or distinctive character of the prescribed lights N c. cannot be mistaken for the lights specified elsewhere in the Rules Y d. All of the above 4826: BOTH INTERNATIONAL & INLAND According to the Navigation Rules, you may depart from the Rules when __________.
Y a. you do so to avoid immediate danger N b. no vessels are visible on radar N c. you are in a close quarters situation N d. out of sight of land 8000: INTERNATIONAL ONLY To indicate that a vessel is constrained by her draft, a vessel may display, in a vertical line, __________.
Y a. three 360° red lights N b. two 225° red lights N c. three 360° blue lights N d. two 225° blue lights 8020: INTERNATIONAL ONLY A vessel not under command sounds the same fog signal as a vessel __________.
N a. towing N b. constrained by her draft N c. under sail Y d. All of the above