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.
21: INLAND ONLY The stand-on vessel in a crossing situation sounds one short blast of the whistle. This means that the vessel __________.
N a. intends to hold course and speed N b. is changing course to starboard N c. is changing course to port Y d. intends to leave the other on her port side 57: INLAND ONLY While underway during the day you sight a small motorboat showing a flashing blue light. The blue light indicates a __________.
Y a. law enforcement boat N b. boat involved in a race N c. Coast Guard Auxiliary Vessel on regatta patrol N d. rescue boat 78: INLAND ONLY Under the Inland Navigation Rules, what is the meaning of a one short blast signal used when meeting another vessel?
N a. "I am turning to starboard." N b. "I am turning to port." N c. "I intend to leave you on my starboard side." Y d. "I intend to leave you on my port side." 143: INLAND ONLY A light used to signal passing intentions must be an __________.
N a. alternating red and yellow light N b. alternating white and yellow light Y c. all-round white or yellow light N d. all-round white light only 174: BOTH INTERNATIONAL & INLAND You see the display of lights shown. They could indicate a vessel __________. (DIAGRAM 71 )
N a. under sail and power N b. dredging while underway N c. fishing with nets extending more than 150 meters Y d. power-driven and approaching head-on 244: BOTH INTERNATIONAL & INLAND You are on a 15-meter vessel "A" in a narrow channel as shown. Vessel "B", a large tanker which can safely navigate only within the channel, sounds five short and rapid blasts. You should __________. (DIAGRAM 32 )
N a. sound one prolonged followed by two short blasts N b. not answer the whistle signal from vessel "B" N c. maintain course and speed Y d. not impede the passage of vessel "B" 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 350: 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. Vessel "B" should sound __________. (DIAGRAM 42 )
N a. one prolonged, one short, one prolonged and one short blasts N b. one prolonged blast N c. two short blasts Y d. None of the above 4035: BOTH INTERNATIONAL & INLAND When underway in restricted visibility, you might hear, at intervals of two minutes, any of the following fog signals EXCEPT __________.
N a. one prolonged blast N b. two prolonged blasts N c. one prolonged and two short blasts Y d. ringing of a bell for five seconds 4072: BOTH INTERNATIONAL & INLAND A 30-meter tug is underway and NOT towing. At night, this vessel must show sidelights and __________.
Y a. one masthead light and a stern light N b. two masthead lights and a stern light N c. three masthead lights and a stern light N d. a stern light ONLY 4154: BOTH INTERNATIONAL & INLAND Which vessel, when anchored at night, is NOT required to show anchor lights?
N a. A power-driven vessel N b. A vessel engaged on pilotage duty Y c. A vessel dredging N d. A vessel restricted in her ability to maneuver 4235: BOTH INTERNATIONAL & INLAND A vessel displaying the day-shapes shown is __________. (DIAGRAM 7 )
Y a. broken down N b. fishing N c. a minesweeper N d. transferring dangerous cargo 4261: BOTH INTERNATIONAL & INLAND What light(s), if any, would you show at night if your vessel was broken down and being towed astern by another vessel?
N a. None N b. Same lights as for a power-driven vessel underway N c. A white light forward and a white light aft Y d. The colored sidelights and a white stern light 4270: BOTH INTERNATIONAL & INLAND A vessel displaying the lights shown is a __________. (DIAGRAM 70 )
N a. pilot boat N b. sailboat Y c. fishing vessel N d. motorboat 4336: BOTH INTERNATIONAL & INLAND While underway and in sight of another vessel crossing less than .5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE?
Y a. You must sound three short blasts on the whistle. N b. You must sound one blast if backing to starboard. N c. You must sound whistle signals only if the vessels are meeting. N d. You need not sound any whistle signals. 4445: BOTH INTERNATIONAL & INLAND Which vessel must show a towing light above the stern light?
N a. A vessel pushing three barges ahead N b. A vessel towing alongside Y c. A vessel with a 150-meter tow astern N d. None of the above 4501: BOTH INTERNATIONAL & INLAND For identification purposes at night, U.S. Navy submarines on the surface may display an intermittent flashing light of which color?
Y a. Amber (yellow) N b. White N c. Blue N d. Red 4516: BOTH INTERNATIONAL & INLAND Which vessel is, by definition, unable to keep out of the way of another vessel?
N a. Vessel engaged in fishing Y b. Vessel restricted in her ability to maneuver N c. Sailing vessel N d. Vessel towing 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 4524: BOTH INTERNATIONAL & INLAND What equipment for fog signals is required for a vessel 20 meters in length?
N a. Whistle only N b. Bell only Y c. Whistle and bell only N d. Whistle, bell, and gong 4539: BOTH INTERNATIONAL & INLAND All of the following are distress signals under the Rules EXCEPT __________.
Y a. a green star signal N b. orange-colored smoke N c. red flares N d. the repeated raising and lowering of outstretched arms 4554: BOTH INTERNATIONAL & INLAND Which vessel must have a gong, or other equipment which will make the sound of a gong?
N a. A sailing vessel N b. Any vessel over 50 meters Y c. Any vessel over 100 meters N d. A power-driven vessel over 75 meters 4605: BOTH INTERNATIONAL & INLAND When two power-driven vessels are meeting head-on and there is a risk of collision, each shall __________.
N a. stop her engines Y b. alter course to starboard N c. sound the danger signal N d. back down 4622: BOTH INTERNATIONAL & INLAND The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within __________.
N a. the distance of visibility N b. 1/2 the distance of visibility Y c. a distance appropriate to the existing circumstances and conditions N d. the distance that it would require for the propeller to go from full ahead to full astern 4706: BOTH INTERNATIONAL & INLAND A "flashing light" is a light that __________.
Y a. flashes at regular intervals at a frequency of 120 flashes or more per minute N b. is yellow in color N c. is visible over an arc of the horizon of not less than 180° nor more than 225° N d. All of the above 4714: BOTH INTERNATIONAL & INLAND Which vessel would exhibit sidelights when underway and not making way?
N a. A vessel not under command Y b. A vessel pushing ahead N c. A vessel engaged in dredging N d. A vessel trawling 4859: BOTH INTERNATIONAL & INLAND A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel. The sailing vessel approaches a vessel engaged in fishing in the narrow channel. Which statement is TRUE?
N a. Each vessel should move to the edge of the channel on her port side. N b. The vessels are required to exchange signals. Y c. The fishing vessel is directed not to impede the passage of the sailing vessel. N d. Each vessel should be displaying signals for a vessel constrained by her draft. 5400: BOTH INTERNATIONAL & INLAND A vessel using a traffic separation scheme shall NOT __________.
N a. cross a traffic lane N b. engage in fishing the separation zone Y c. proceed in an inappropriate traffic lane N d. enter the separation zone 8010: INTERNATIONAL ONLY A vessel displaying three red lights in a vertical line is __________.
N a. not under command N b. aground N c. dredging Y d. constrained by her draft 8120: INTERNATIONAL ONLY A light used to signal passing intentions must be an __________.
N a. all-round yellow light only Y b. all-round white light only N c. all-round blue light only N d. alternating red and yellow light