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.
47: INLAND ONLY A flashing blue light is used to identify __________.
Y a. law enforcement vessels N b. U.S. submarines N c. air-cushion vessels in the nondisplacement mode N d. dredge pipelines on trestles 66: INLAND ONLY A towing vessel pushing ahead on the Western Rivers above the Huey P. Long bridge must show __________.
N a. sidelights only Y b. sidelights and towing lights N c. sidelights, towing lights, and two masthead lights N d. sidelights, towing lights, and three masthead lights 117: INLAND ONLY Which is a characteristic of a "special flashing light"?
N a. It is required for all vessels being pushed ahead as part of a composite unit. Y b. It must show through an arc of not less than 180° nor more than 225°. N c. It must be of the same character and construction as the masthead light. N d. All of the above 134: INLAND ONLY Which is TRUE of a vessel downbound with a following current when meeting an upbound vessel on the Western Rivers?
N a. Neither vessel has the right-of-way. Y b. She has the right-of-way only if she is power-driven. N c. She does not have the right-of-way, since the other vessel is not crossing the river. N d. She must wait for a whistle signal from the upbound vessel. 218: INLAND ONLY Your tug is pushing a barge ahead at night. What light(s) should show aft on your vessel? DIAGRAMS60,75,46,70
N a. The light(s) in Diagram 60. Y b. The light(s) in Diagram 75. N c. The light(s) in Diagram 46. N d. The light(s) in Diagram 70. 242: BOTH INTERNATIONAL & INLAND You are on Vessel "A" engaged in fishing as shown in a narrow channel. Vessel "B" is a tanker proceeding in the channel. Vessel "B" sounds five short and rapid blasts. You should __________. (DIAGRAM 37 )
N a. not answer the whistle signals from vessel "B" N b. maintain course and speed Y c. not impede the passage of vessel "B" N d. sound one prolonged followed by two short blasts 262: INLAND ONLY When power-driven vessels are in sight of one another, passing signals shall be sounded when __________.
Y a. meeting or crossing within half a mile of each other N b. meeting within one mile of each other N c. meeting or crossing at any distance N d. crossing within one mile of each other 4017: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?
N a. A bell signal N b. A gong signal Y c. A whistle signal N d. All of the above 4038: BOTH INTERNATIONAL & INLAND A bell is used to sound a fog signal for a __________.
N a. power-driven vessel underway Y b. sailing vessel at anchor N c. vessel engaged in fishing N d. vessel not under command 4106: BOTH INTERNATIONAL & INLAND What type of vessel or operation is indicated by a vessel showing two cones with the apexes together?
N a. Sailing vessel Y b. Vessel trawling N c. Mineclearing N d. Dredge 4111: BOTH INTERNATIONAL & INLAND A 50-meter vessel is towing astern and the length of the tow is 100 meters. In addition to sidelights, which lights may she show to fully comply with the Rules?
N a. Two masthead lights forward, a stern light, and a towing light above the stern light Y b. A masthead light forward, two masthead lights aft, a stern light, and a towing light above the stern light N c. No masthead light forward, two masthead lights aft, a stern light, and a towing light above the stern light N d. Three masthead lights forward, one masthead light aft, and two towing lights in a vertical line at the stern 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 4134: BOTH INTERNATIONAL & INLAND Vessel "A" is overtaking vessel "B" as shown. Which vessel is the stand-on vessel? (DIAGRAM 9 )
N a. Vessel "A" Y b. Vessel "B" N c. Neither vessel N d. Both vessels must keep clear of the other. 4178: BOTH INTERNATIONAL & INLAND You are underway in fog and you hear one prolonged blast followed by two short blasts. This is a vessel __________.
Y a. towing N b. engaged on pilotage duty N c. aground in a fairway N d. stopped and making no way through the water 4266: BOTH INTERNATIONAL & INLAND On open waters, a power-driven vessel shall keep out of the way of a __________.
N a. vessel on her port side that is crossing her course N b. vessel that is overtaking her N c. seaplane on the water Y d. sailing vessel 4279: BOTH INTERNATIONAL & INLAND You are watching another vessel approach and her compass bearing is not changing. This means that __________.
N a. you are the stand-on vessel Y b. a risk of collision exists N c. a special circumstances situation exists N d. the other vessel is dead in the water 4316: BOTH INTERNATIONAL & INLAND When shall the stand-on vessel in a crossing situation take action to avoid the other vessel?
N a. When a risk of collision exists Y b. When action by the give-way vessel alone will not prevent a collision N c. When the bearing to give-way vessel becomes steady N d. When the vessels become less than 1/2 mile apart 4320: 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 above 4330: BOTH INTERNATIONAL & INLAND While underway in fog, you hear a short blast, a prolonged blast, and a short blast of a whistle. This signal indicates a __________.
N a. vessel towing in fog N b. sailboat underway in fog N c. vessel being towed in fog Y d. vessel anchored in fog 4400: BOTH INTERNATIONAL & INLAND When action to avoid a close quarters situation is taken, a course change alone may be the most effective action provided that __________.
N a. it is done in a succession of small course changes N b. it is NOT done too early Y c. it is a large course change N d. the course change is to starboard 4402: BOTH INTERNATIONAL & INLAND A vessel at anchor will show a __________.
Y a. ball N b. cone N c. cylinder N d. double cone, apexes together 4415: BOTH INTERNATIONAL & INLAND Which signal may be used by a vessel that is in doubt as to whether sufficient action is being taken by another vessel to avoid collision?
N a. A continuous sounding of the fog horn 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 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 4617: BOTH INTERNATIONAL & INLAND A vessel proceeding along a narrow channel shall __________.
N a. avoid crossing the channel at right angles N b. not overtake any vessels within the channel Y c. keep as near as safe and practicable to the limit of the channel on her starboard side N d. when nearing a bend in the channel, sound a long blast of the whistle 4686: BOTH INTERNATIONAL & INLAND If underway in low visibility and sounding fog signals, what changes would you make in the fog signal IMMEDIATELY upon losing the power plant and propulsion?
Y a. Begin sounding one prolonged blast followed by two short blasts at two-minute intervals. N b. Begin sounding one prolonged blast followed by three short blasts at two-minute intervals. N c. Begin sounding two prolonged blasts at two-minute intervals. N d. No change should be made in the fog signal. 4691: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in fog. Which signal is optional?
N a. A bell signal Y b. A whistle signal N c. A gong signal N d. All of the above are mandatory. 4837: BOTH INTERNATIONAL & INLAND A vessel "restricted in her ability to maneuver" is one which __________.
N a. through some exceptional circumstance is unable to maneuver as required by the Rules Y b. from the nature of her work is unable to maneuver as required by the Rules N c. due to adverse weather conditions is unable to maneuver as required by the Rules N d. has lost steering and is unable to maneuver 4876: 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. sound two prolonged blasts followed by one short blast Y b. not cross the channel if you might impede the other vessel N c. sound three short blasts, and take all way off your vessel N d. hold your course and speed if he is on your port bow 5200: BOTH INTERNATIONAL & INLAND In a traffic separation scheme, when joining a traffic lane from the side, a vessel shall do so __________.
N a. only in case of an emergency or to engage in fishing within the zone N b. as nearly as practical at right angles to the general direction of traffic flow Y c. at as small an angle as possible N d. only to anchor within the zone 8116: INTERNATIONAL ONLY Which vessel shall avoid impeding the safe passage of a vessel constrained by her draft?
N a. A vessel not under command Y b. A sailing vessel N c. A vessel restricted in her ability to maneuver N d. All of the above