If you do NOT understand the course or intention of an approaching vessel you should sound ___________.A.one short blastB.one prolonged blastC.not less than five short blastsD.not less than five prolonged blasts
If you do NOT understand the course or intention of an approaching vessel you should sound ___________.
A.one short blast
B.one prolonged blast
C.not less than five short blasts
D.not less than five prolonged blasts
相关考题：
You are approaching another vessel and see that she has the signal flag "J" hoisted. What should you do?A.Keep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargoB.Attempt to call the vessel on VHF radiotelephone because she is requesting to communicateC.Approach the vessel with caution because she is dragging her anchorD.Proceed on present course and speed since the vessel is requesting a tug
While proceeding to a distress site，you hear the words “Seelonce mayday” on the radiotelephone．Which action should you take ________．A.Resume base course and speed as your assistance is no longer requiredB.Acknowledge receipt and advise your course，speed，and ETAC.Relay the original distress message as no other vessel has acknowledged itD.Monitor the radiotelephone but do not transmit
Your vessel is crossing a narrow channel．A vessel to port is within the channel and crossing your course．She is showing a black cylinder．What is your responsibility ________．A.Hold your course and speedB.Sound the danger signalC.Begin an exchange of passing signalsD.Do not cross the channel if you might impede the other vessel
A vessel is approaching from dead ahead.Both of her sidelights are visible and her range lights are in line. Which of the following could you do first? ______.A.Sound one blast of the whistleB.Alter course to starboardC.Construct a radar plotD.Sound the danger signal
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 ______.A.turn to portB.turn to starboardC.maintain course and speed and sound the danger signalD.maintain course and speed and sound no signal
If your vessel is the stand-on vessel in a crossing situation ______.A.you must keep your course and speedB.you may change course and speed as the other vessel must keep clearC.the other vessel must keep her course and speedD.both vessels must keep their course and speed
In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should ______.A.stop your enginesB.sound the danger signal at two-minute intervalsC.hold course and speed until the other vessel is sightedD.take avoiding action as soon as possible
单选题You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen．You should sound（）.Aone blast，4 to 6 seconds in durationBthree blasts，4 to 6 seconds in durationCone continuous blast until you are able to see around the bendDone blast，8 to 10 seconds in duration
单选题You are in charge of a stand-on vessel in a crossing situation.The other vessel is 1.5 miles to port.You believe that risk of collision exists.You should（）.Atake avoiding action immediately upon determining that risk of collision existsBimmediately sound the danger signalCtake avoiding action only after providing the give-way vessel time to take action ,and determining that her action is not appropriateDhold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision
单选题Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.AThe first vessel to sight the other should give wayBThe vessel making the slower speed should give wayCBoth vessels should alter course to starboardDBoth vessels should alter course to port
单选题You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel.You should（）.Across the channel as you are the stand-on vesselBcross only if the vessel in the channel is approaching on your port sideCnot cross the channel if you might impede the other vesselDsound the danger signal
单选题You are aboard the give-way vessel in a crossing situation．What should you NOT do in obeying the Rules（）.ACross ahead of the stand-on vesselBMake a large course change to starboardCSlow your vesselDBack your vessel
单选题Your vessel is approaching a bend. You hear a prolonged blast from around the bend. You should （）.Aback your enginesBstop your engines and driftCanswer with one prolonged blastDsound the danger signal
单选题You are in charge of a power-driven vessel navigating at night.You sight the red sidelight of another vessel on your port bow.The other vessel’s aft masthead light is to the right of her forward masthead light. You should（）.Astop enginesBhold course and speedCalter course to portDsound the danger signal
单选题Which statement is TRUE concerning the danger signal?（）.AWhen any vessel fails to understand the intentions of an approaching vessel she must sound the danger signalBOnly the stand-on vessel can sound the danger signalCDistress signals may be used in place of the danger signalDThe danger signal consists of 4 or more short blasts of the whistle
单选题If you do NOT understand the course or intention of an approaching vessel you should sound （）.Aone short blastBone prolonged blastCnot less than five short blastsDnot less than five prolonged blasts
单选题You are on watch and the Pilot has the conn.The Master has temporarily gone below.The Pilot orders a course change which you are certain will put the vessel into imminent danger.Your first action should be to（）.ACountermand the order and immediately notify the MasterBMake an appropriate entry in the deck log concerning the Pilot's orderCImmediately call the Master and await further orders from himDImmediately sound a short ring on the general alarm
单选题A vessel is approaching from dead ahead． Both of her sidelights are visible and her range lights are in line. Which of the following could you do first?（）.ASound one blast of the whistleBAlter course to starboardCConstruct a radar plotDSound the danger signal
单选题Your vessel is NOT making way，but is not in any way disabled.Another vessel is approaching you on your starboard beam.Which statement is TRUE（）.AYour vessel is obligated to stay out of the wayBThe other vessel must give way，since your vessel is stoppedCYou should be showing the lights or shapes for a vessel not under commandDYou should be showing the lights or shapes for a vessel restricted in her ability to maneuver
单选题You are approaching another vessel and see that it has the signal flag “O” hoisted．What is your next action（）.AProceed on present course and speed since the vessel is requesting a pilotBAttempt to call the vessel on VHF radiotelephone and begin a search because the vessel has a man overboardCAttempt to call the vessel on VHF radiotelephone because it is disabledDApproach with caution because the vessel is stopped and making no way through the water
单选题While proceeding to a distress site，you hear the words “Seelonce mayday” on the radiotelephone.Which action should you take（）.AResume base course and speed as your assistance is no longer requiredBAcknowledge receipt and advise your course，speed，and ETACRelay the original distress message as no other vessel has acknowledged itDMonitor the radiotelephone but do not transmit
单选题If help has not arrived in 10-12 hours after you abandon a vessel in a survival craft，you should（）.Ago in one direction until the fuel runs outBplot a course for the nearest landCtake a vote on which direction you should goDshut down the engine(s) and set the sea anchor
单选题You are underway in reduced visibility.You hear the fog signal of another vessel about 20° on your starboard bow.Risk of collision may exist.You should（）.Aalter course to starboard to pass around the other vesselBreduce your speed to bare steeragewayCslow your engines and let the other vessel pass ahead of youDalter course to port to pass the other vessel on its portside
单选题You are approaching another vessel and see that she has the signal flag “J” hoisted. What should you do?（）AKeep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargoBAttempt to call the vessel on VHF radiotelephone because she is requesting to communicateCApproach the vessel with caution because she is dragging her anchorDProceed on present course and speed since the vessel is requesting a tug
单选题At sea，you are approaching a small vessel and see that it has the signal flag P hoisted. What should you do?（）.AProceed on present course and speed since the vessel is stopped and making no way through the waterBKeep clear of the vessel because it has a diver downCAttempt to call the vessel on VHF radiotelephone because someone on board requires medical assistanceDApproach with caution because the vessel is a fishing vessel and its nets are fouled on an obstruction
单选题You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.Ahold course and sound a two blast whistle signalBhold course and sound no whistle signalCchange course to the right and sound one blastDhold course and sound two prolonged and two short blasts
单选题At night，if you see a vessel ahead displaying the lights shown you should（）.Aprovide assistance as the vessel is in distressBstay clear as the vessel is transferring dangerous cargoCstay clear as the vessel is fishingDchange course to the right as the vessel is crossing your bow