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 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. 150: INLAND ONLY A power-driven vessel, when leaving a dock or berth, must sound what signal?
N a. Three short blasts N b. A long blast Y c. A prolonged blast N d. No signal is required. 199: INLAND ONLY You are on a vessel that the Secretary has determined cannot comply with the spacing requirement for masthead lights. What is required in this situation?
N a. The vessel must carry only the lights that comply with the rules; the others may be omitted. Y b. The vessel's lights must comply as closely as possible. N c. The vessel must be altered to permit full compliance with the rules. N d. An all-round light should be substituted for the after masthead light and the stern light. 243: INTERNATIONAL ONLY You are on vessel "A" as shown. Vessel "B" sounds two short blasts. You should __________. (DIAGRAM 32 )
N a. sound two prolonged blasts followed by two short blasts Y b. not answer the whistle signal from vessel "B" N c. sound two short blasts and maintain course and speed N d. sound one prolonged, one short, one prolonged and one short blasts 270: INLAND ONLY Two power-driven vessels are meeting in a narrow channel as shown. Which statement is TRUE? (DIAGRAM 37 )
N a. Whistle signals must be exchanged in all situations when passing within one half mile of each other. Y b. If agreement is reached by radiotelephone whistle signals are optional. N c. If agreement is reached by radiotelephone whistle signals must still be exchanged. N d. None of the above 294: BOTH INTERNATIONAL & INLAND The display of lights shown could represent a __________. (DIAGRAM 48 )
N a. a submarine on the surface N b. sailing vessel N c. a vessel not under command Y d. None of the above 317: BOTH INTERNATIONAL & INLAND At night a vessel displaying the lights as shown is __________. (DIAGRAM 82 )
N a. a pilot boat N b. sailing N c. anchored Y d. fishing 345: INLAND ONLY Two power-driven vessels are crossing within a half a mile of each other as shown. Vessel "A" sounds one short blast on the whistle. This signal means __________. (DIAGRAM 42 )
N a. "I intend to overtake you on my starboard side" N b. "I am operating astern propulsion" Y c. "I intend to leave you on my port side" N d. None of the above 359: BOTH INTERNATIONAL & INLAND Two power-driven vessels are crossing as shown. Vessel "A" sounds one short blast on the whistle. You are on vessel "B" and doubt that sufficient action is being taken by vessel "A" to avoid collision. You should __________. (DIAGRAM 42 )
N a. maintain course and speed N b. alter course to the left and increase speed N c. sound one short blast and maintain course and speed Y d. None of the above 4033: BOTH INTERNATIONAL & INLAND The duration of a prolonged blast of the whistle is __________.
N a. 2 to 4 seconds Y b. 4 to 6 seconds N c. 6 to 8 seconds N d. 8 to 10 seconds 4084: BOTH INTERNATIONAL & INLAND If you are approaching a bend, and hear a whistle signal of one prolonged blast from around the bend, you should answer with a signal of __________.
N a. a short blast Y b. a prolonged blast N c. one short, one prolonged, and one short blast N d. a long blast 4109: BOTH INTERNATIONAL & INLAND A vessel towing in fog shall sound a fog signal of __________.
N a. one prolonged blast every one minute N b. two prolonged blasts every two minutes Y c. one prolonged and two short blasts every two minutes N d. one prolonged blast every two minutes 4159: BOTH INTERNATIONAL & INLAND A power-driven vessel underway shall keep out of the way of a __________.
N a. vessel not under command N b. vessel engaged in fishing N c. sailing vessel Y d. All of the above 4163: BOTH INTERNATIONAL & INLAND You are underway in restricted visibility. You hear the fog signal of another vessel about 22° on your starboard bow. If danger of collision exists you must __________.
Y a. reduce your speed to bare steerageway N b. slow your engines and let the other vessel pass ahead of you N c. alter the course to starboard to pass around the other vessel's stern N d. alter course to port to pass the other vessel on its port side 4325: BOTH INTERNATIONAL & INLAND A vessel aground in fog shall sound, in addition to the proper anchor signal, which of the following?
N a. Three strokes on the gong before and after sounding the anchor signal Y b. Three strokes on the bell before and after the anchor signal N c. Four short blasts on the whistle N d. One prolonged and one short blast on the whistle 4334: 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 meters 4344: BOTH INTERNATIONAL & INLAND "safe speed" is defined as that speed where __________.
N a. you can stop within your visibility range Y b. you can take proper and effective action to avoid collision N c. you are traveling slower than surrounding vessels N d. no wake comes from your vessel 4407: BOTH INTERNATIONAL & INLAND A 200-meter vessel is aground in restricted visibility. 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 4425: BOTH INTERNATIONAL & INLAND A power-driven vessel exhibits the same lights as a __________.
N a. vessel towing, when not underway N b. vessel towing astern N c. sailing vessel Y d. pushing vessel and a vessel being pushed, when they are in a composite unit 4463: BOTH INTERNATIONAL & INLAND You are underway on vessel "B" approaching vessel "A", as shown. You are unable to see any sidelights on vessel "A". This is a(n) __________. (DIAGRAM 38 )
N a. meeting situation N b. crossing situation Y c. overtaking situation N d. special circumstances situation 4472: BOTH INTERNATIONAL & INLAND Which statement is TRUE concerning seaplanes on the water?
N a. A seaplane must exhibit appropriate lights but need not exhibit shapes. N b. A seaplane should show the lights for a vessel constrained by her draft. N c. In situations where a risk of collision exists, a seaplane should always give way. Y d. A seaplane on the water shall, in general, keep well clear of all vessels. 4541: BOTH INTERNATIONAL & INLAND The Rules state that vessels may depart from 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 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 4628: BOTH INTERNATIONAL & INLAND A sailing vessel displaying the day-shape shown is indicating that she is __________. (DIAGRAM 35 )
Y a. being propelled by power as well as sail N b. on a starboard tack N c. close-hauled and has difficulty maneuvering N d. fishing as well as sailing 4678: BOTH INTERNATIONAL & INLAND Which is a light signal authorized by the Secretary of the Navy as an additional navigational light for a ship of war?
Y a. Intermittent flashing amber (yellow) beacon for submarines N b. Green masthead and yardarm lights indicating mine clearance operations N c. Red-white-red lights in a vertical line for a carrier, launching aircraft N d. Yellow flares indicating torpedo firing exercises 4734: BOTH INTERNATIONAL & INLAND A vessel may use any sound or light signals to attract the attention of another vessel as long as __________.
N a. white lights are not used N b. red and green lights are not used Y c. the signal cannot be mistaken for a signal authorized by the Rules N d. the vessel signals such intentions over the radiotelephone 8024: INTERNATIONAL ONLY Which signal is required to be sounded by a power-driven vessel ONLY?
Y a. A signal meaning, "I am altering my course to starboard." N b. A signal meaning, "I intend to overtake you on your starboard side." N c. A signal meaning that the vessel sounding it is in doubt as to the other vessel's actions. N d. A signal sounded when approaching a bend. 8051: INTERNATIONAL ONLY A vessel constrained by her draft may display __________.
Y a. three all-round red lights N b. two 225° red lights N c. three all-round blue lights N d. two 225° blue lights 8104: INTERNATIONAL ONLY Your vessel is constrained by her draft and operating in a narrow channel. Another vessel is crossing your course from starboard to port. You are in doubt as to her intentions. According to Rule 9, you __________.
N a. should sound one short blast to indicate that you are holding course and speed N b. must sound one prolonged blast Y c. may sound the danger signal N d. are required to back down