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.
2: INLAND ONLY What is the required whistle signal for a power-driven vessel leaving a dock or berth?
N a. One short blast Y b. One prolonged blast N c. Two short blasts N d. Two prolonged blasts 25: INLAND ONLY In a narrow channel, a power-driven vessel desiring to overtake another power-driven vessel on the other vessel's starboard side will sound a whistle signal of __________.
Y a. one short blast N b. two short blasts N c. two prolonged blasts followed by one short blast N d. two prolonged blasts followed by two short blasts 29: INLAND ONLY A fleet of moored barges extends into a navigable channel. What is the color of the lights on the barges?
N a. Red N b. Amber Y c. White N d. Yellow 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 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 54: INLAND ONLY A barge more than 50 meters long would be required to show how many white anchor lights when anchored in a Secretary approved "special anchorage area"?
N a. 1 Y b. 2 N c. 3 N d. None 61: INLAND ONLY Your power-driven vessel is overtaking another power-driven vessel in a narrow channel. You wish to overtake her on her starboard side. You should sound a whistle signal of __________.
Y a. one short blast N b. two prolonged blasts followed by one short blast N c. one prolonged and one short blast N d. at least five short blasts 103: INLAND ONLY Which light display would mark the opening in a pipeline where vessels could pass through?
N a. Three red lights in a vertical line on each side of the opening Y b. Two red lights in a vertical line on each side of the opening N c. Three white lights in a vertical line on each side of the opening N d. Two white lights in a vertical line on each side of the opening 144: INLAND ONLY A light used to signal passing intentions must be an __________.
N a. all-round yellow light only N b. all-round white light only N c. alternating red and yellow light Y d. all-round white or yellow light 394: BOTH INTERNATIONAL & INLAND You see ONLY the light shown. This could be a __________. (DIAGRAM 80 )
N a. law enforcement vessel N b. vessel on pilotage duty Y c. sailing vessel N d. power-driven vessel 4103: BOTH INTERNATIONAL & INLAND Which is the danger signal?
N a. A continuous sounding of the fog signal N b. Firing a gun every minute Y c. Five or more short rapid blasts on the whistle N d. One prolonged blast on the whistle 4136: BOTH INTERNATIONAL & INLAND The white masthead light required for a power-driven vessel under the Rules is visible over how many degrees of the horizon?
N a. 022.5° N b. 112.5° Y c. 225.0° N d. 360.0° 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 4230: BOTH INTERNATIONAL & INLAND In restricted visibility, a vessel restricted in her ability to maneuver, at anchor, would sound a fog signal of __________.
N a. the rapid ringing of a bell for five seconds every minute N b. two prolonged and two short blasts every two minutes Y c. one prolonged and two short blasts every two minutes N d. two prolonged and one short blast every two minutes 4278: BOTH INTERNATIONAL & INLAND A light signal consisting of three flashes means __________.
N a. "I am in doubt as to your actions" N b. "My engines are full speed astern" N c. "I desire to overtake you" Y d. "I am operating astern propulsion" 4306: BOTH INTERNATIONAL & INLAND Which vessel is directed not to impede the passage of a vessel which can only navigate inside a narrow channel?
Y a. A vessel of less than 20 meters in length N b. A vessel not under command N c. A vessel engaged in surveying N d. All of the above 4410: BOTH INTERNATIONAL & INLAND The rules state that vessels may depart from the requirements of 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 4426: BOTH INTERNATIONAL & INLAND A power-driven vessel is underway in fog but stopped and making no way through the water. What is the required fog signal?
N a. One prolonged blast at not more than one-minute intervals N b. Two prolonged blasts at not more than one-minute intervals N c. One prolonged blast at not more than two-minute intervals Y d. Two prolonged blasts at not more than two-minute intervals 4471: BOTH INTERNATIONAL & INLAND A vessel towing astern in an operation which severely restricts the towing vessel and her tow in their ability to deviate from their course shall, when making way, show __________.
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 4546: BOTH INTERNATIONAL & INLAND Which vessel may use the danger signal?
N a. The vessel to starboard when two power-driven vessels are crossing N b. A vessel engaged in fishing, crossing the course of a sailing vessel N c. Either of two power-driven vessels meeting head-on Y d. All of the above 4583: BOTH INTERNATIONAL & INLAND An anchor ball need NOT be exhibited by an anchored vessel if she is __________.
N a. under 50 meters in length, and anchored in an anchorage N b. over 150 meters in length N c. rigged for sail Y d. less than 7 meters in length, and not in or near an area where other vessels normally navigate 4584: INTERNATIONAL AND INLAND A vessel that is not equipped with towing lights should show that it has a vessel in tow by_________________.
N a. continuously sounding its horn N b. sounding one prolonged followed by two short blasts at intervals of not more than two minutes Y c. shining a searchlight on the towline of the towed vessel N d. None of the above; a vessel shall not engage in towing at night without proper navigation lights 4642: BOTH INTERNATIONAL & INLAND By radar alone, you detect a vessel ahead on a collision course, about 3 miles distant. Your radar plot shows this to be a meeting situation. You should __________.
N a. turn to port Y b. turn to starboard N c. maintain course and speed and sound the danger signal N d. maintain course and speed and sound no signal 4672: 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. 4684: BOTH INTERNATIONAL & INLAND You see a red sidelight bearing NW (315°). That vessel may be heading __________.
N a. northwest (315°) N b. east (090°) Y c. southwest (225°) N d. west (270°) 4827: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from the requirements of the Rules when __________.
N a. operating in restricted visibility N b. operating in a narrow channel Y c. necessary to avoid immediate danger N d. the Master enters it in the ship's log 8013: INTERNATIONAL ONLY When two vessels are in sight of one another, all of the following signals may be given EXCEPT __________.
N a. a light signal of at least five short and rapid flashes Y b. four short whistle blasts N c. one prolonged, one short, one prolonged and one short whistle blasts N d. two short whistle blasts 8048: INTERNATIONAL ONLY You are underway in a narrow channel, and you are being overtaken by a vessel astern. After the overtaking vessel sounds the proper signal indicating his intention to pass your vessel on your starboard side, you signal your agreement by sounding __________.
N a. one short blast N b. two prolonged blasts N c. two prolonged followed by two short blasts Y d. one prolonged, one short, one prolonged, and one short blast in that order 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 8131: INTERNATIONAL ONLY What characteristic must a light have if used to signal passing intentions?
Y a. It must be an all-round white light. N b. It must be an alternating blue and white light. N c. It must be an all-round white or yellow light. N d. It must be an alternating red and yellow light.