When a vessel signals her distress by means of a gun or other explosive signal，the firing should be at intervals of approximately（）.

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• When one of two vessels（）is required to keep out of the way the other must keep her course and speed.

  A . In sight of another B . Sights the another C . Not in sight of the other D . In sight of one another

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• Concerning the identification signal for a pilot vessel，in fog，which statement is TRUE?（）

  A . When at anchor，the pilot vessel is only required to sound anchor signals B . The identification signal must be sounded any time the pilot vessel is underway C . The pilot vessel may only sound the identity signal when making way D . All of the above

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• One of the signals，other than a distress signal，that can be used by a vessel to attract attention is a(n)（）.

  A . red star shell B . searchlight C . burning barrel D . orange smoke signal

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• A whistle signal of one prolonged，one short，one prolonged and one short blast，is sounded by a vessel（）.

  A . at anchor B . towing a submerged object C . being overtaken in a narrow channel D . in distre

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• A 200-meter vessel is aground in fog. Which signal is optional? （）

  A . A bell signal B . A gong signal C . A whistle signal D . All of the above

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• You have berthed in a area with other tank vessels. What signal is displayed by a vessel to indicate it is transferring flammable or combustible liquid cargo?（）.

  A . A flashing yellow light B . A red light visible all around the horizon C . A green light visible all around the horizon D . An illuminated red and yellow caution flag

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• A vessel constrained by her draught shall，when risk of collision with another vessel in a crossing or head-on situation exists，（）.

  A . apply the relevant Steering and Sailing Rules as a power-driven vessel B . apply the relevant Steering and Sailing Rules as a Sailing vessel C . apply the relevant Steering and Sailing Rules as a vessel not under command D . apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operatio

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• 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（）.

  A . the masthead lights for a towing vessel B . the lights for a vessel restricted in its ability to maneuver C . sidelights，stern light and towing light D . All of the above

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• A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.

  A . danger，stay away B . all is clear，it is safe to pass C . all is clear，it is safe to approach D . a distress signal

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• The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?（）

  A . One blast at one-minute intervals B . One blast at two-minute intervals C . Two blasts at one-minute intervals D . One prolonged and two short blasts at two-minute interval

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• While underway，in fog，you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel（）.

  A . not under command B . being towed C . on pilotage duty D . aground

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• A pilot vessel may continue to sound an identity signal if she is （）.

  A . underway，but not making way B . aground C . being towed D . not engaged in pilotage duty

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• A towing vessel and her tow are severely restricted in their ability to change course. When making way，the towing vessel will show ONLY（）.

  A . the masthead lights for a towing vessel B . the lights for a vessel restricted in her ability to maneuver C . sidelights，stern light，and towing light D . All of the above

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• A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.

  A . moderate speed B . safe speed C . half speed D . bare steerageway

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• A list signal of one white light indicates that the vessel is （）.

  A . on an even keel B . listing about 1° to the side the light is displayed on C . listing over 5° With the light displayed on the high side D . listing，and the chutes should be directed to the side where the light is displayed

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• A power-driven vessel shall have her engine ready for（）when the visibility is restricted.

  A . immediately stop B . immediately maneuvering C . immediately anchoring D . immediately going aster

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• A vessel constrained by her draft may display（）.

  A . three all-round red lights instead of the lights required for a power-driven vessel of her class B . the same lights as a vessel restricted in her ability to maneuver C . three all-round red lights in addition to the lights required for a power-driven vessel of her class D . the lights for a power-driven vessel which is not under command

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• The rule state that a vessel overtaking another vessel is relieved of her duty to keep clear when（）.

  A . she is forward of the other vessel’s beam B . the overtaking situation become crossing situation C . She is past and clear of the other vessel D . the other vessel is no longer in sight

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• A 200-meter vessel restricted in her ability to maneuver，at anchor，will sound a fog signal of（）.

  A . a 5 second ringing of a bell forward and a 5 second sounding of a gong aft at intervals of 1 minute B . one prolonged followed by two short blasts every 2 minutes C . one prolonged followed by three short blasts every minute D . one prolonged followed by three short blasts every 2 minute

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• All fog signals shall be sounded every two minutes with the exception of a vessel（）.

  A . underway or making way B . under sail or under tow C . anchored or aground D . not under command or restricted in her ability to maneuver

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• At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.

  A . in distress B . approaching a bend in the channel C . operating astern propulsion D . intending to overtake another vessel

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• When two vessels are in sight of one another and NOT in or near an area of restricted visibility，any of the following signals may be given EXCEPT（）.

  A . a light signal of at least five short and rapid flashes B . one prolonged，one short，one prolonged，and one short whistle blasts C . four short whistle blasts D . two short whistle blast

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