航海154.doc

17What may affect the accuracy of sounding with echo sounder?A.Sea bottomB.Ships speedC.Speed of currentD.Water temperature and density18What often happens when using echo-sounder at river estuary where a layer of fresh water lies on the top of denser salt water?A.A scattering layer appears.B.Echo sounder stops working.C.shallow water appears.D.Nothing abnormal happens19Regarding the use of GPS, which one of the followings is incorrect?A.GPS is the most accurate global system today.B.Its use is still under the U.S. Department of Defences controlC.DGPS is more accurate than GPSD.GPS can provide a real-time position under any condition20Without doubt the radar is a highly important navigation aid. But duty officer shall aware that_when using it.A.Its range reading is more accurate than its bearing reading B.A low-lying coastline with a long, flat beach will show up properly on the radarC.Radar is only aimed at collision avoidance.D.The use of radar is necessary only when visibility is restricted.21As for racon,which one is incorrect. in the following?A.Racon is a radar transponder.B.Racon is often installed on major waypoints.C.When activated by a radar signal, the Racon sends it back with an identifierD.Racon can be used to take place of radar22What does a Racon help with?A.Measuring the distanceB.Measuring the relative speedC.Identifing a vessel D.Identifing a seamark23What does ECDIS stand for?A.Electrical Chart Display and Indication SystemB.Electronic Chart Display and Information SystemC.Electric Chart Display and Informing SystemD.Electronic Chart Display and Indicating System24The IALA buoyage system is divided into two categories:_.A.The buoy system and the lighthouse systemB.The central buoy system and the side buoy systemC.The lateral system and the cardinal systemD.The stripe system and the band system25The lateral system is used in_.A.restricted water such as shoals, reefs or wrecksB.restricted water such as buoyed channelsC.open waters such as shonls,reefs or wrecksD.open waters such as buoyed channels26In region A, The green buoys are kept to_and red to _when sailing from_to_.A.starboard,port,sea,landB.starboard,port,land,seaC.port,starboard,land,landD.port,starboard,sea,sea27Which one of the followings about Traffic Separation Scheme(TSS) is incorrect?A.TSS separates inbound and outbound traffic in well marked lanes.B.Regulations request all vessels to join or leave lanes at the extremities.C.If a TSS has to be crossed, it has to be carried out as close as possible to a right angleD.Being in the TSS does change the general rule of the Road convention28How do you take a running fix?A.By measuring the angle between to fixed landmarks and finding the sine of the angles.B.By taking bearings from a landmark at time intervals and finding the sine of the angles.C.By taking bearings from a landmark at time intervals and measuring the distance covered in the intervals.D.By taking the relative bearings from 2 sets of landmarks and plotting the difference.29Who has the right of way in a Traffic Separation Scheme?A.The inbound vesselB.The outbound vesselC.The vessel coming from the starboard sideD.The vessel coming from the port side30What would be the color of an IALA starboard hand lateral buoy, as seen when sailing toward land, in Europe?A.GreenB.RedC.Red and green stripesD.Black and yellow stripes31As the tide makes the water_twice a day a resulting current, or tidal stream, is generated.a resulting current, or tidal stream, is generated.A.rising and fallingB.Rose and fellC.the rise and fallD.rise and fall32When reversing, the tidal stream will have a period with little or no effect. This is called the_.A.RiseB.RangeC.SlackD.Spring33The average time between two high waters is 12 hours and 25 minutes because this is the time it takes for_.A.The sun to be at the opposite side of the moonB.The moon to be at the opposite side of the earthC.The moon to be at its apogeeD.The sun and the moon to be on the same side34What is the tidal height?A.Twice the tide amplitude B.The range of the tideC.The water above the Lowest Astronomical TideD.The height above or under the mean level35What is the right way to use VHF CH16 and working channel?A.Ships can call other ships on Ch16 but should move to a working channel as soon as possible.B.Ship should use working channel to call other ships at any time.C.Ch16 is only used as the international distress and calling frequency.D.Ship can use Ch16 or working channel as they like36How to report your ship call sign to a shore station?A.Use capital lettersB.Use phonetic alphabetC.Use letters and numbersD.Use flag signals37Which one of the followings is not a right way to call an unknown vessel of VHF?A.According to her characteristicsB.According to her cargoC.According to her movementsD.According to her crewmembers38If there were suddenly an immediate danger for both the vessel and its crew, would you send a MAYDAY on_?A.Ch06 with dual watchB.Ch06 with 25 watts ouputC.Ch16 with 1 watt ouputD.Ch16 with 25 watts ouput39In the unlikely event that a distress situation allows you to send only a very short message, after MAYDAY would you first say_?A.Your name and call signB.Your positionC.The number of persons on boardD.the nature of the distress situation40The GPS satellite orbits the earth in approximately_.A.3 hoursB.6 hoursC.12 hoursD.24 hours41GPS receiver errors depend on _.A.operationB.installationC.display typeD.construction42Error in the GPS positions has nothing to do with _.A.user clock biasB.satellite clock biasC.atmospheric interferenceD.ships position 43What is the main purpose of DGPS?A.Improve positioning accuracyB.Decrease positioning accuracyC.Reduce operational costD.I dont know44The accuracy of the DGPS mainly depends on_.A.The price of the equipmentB.The relative angle between the satelliteC.The position of the observerD.The age of the calculated correction45What is the purpose of a Pedestal（基座，柱脚） Roile?A.To change the direction of lead on a mooring lineB.To secure a chainC.To secure the eye of a mooring lineD.To facilitate towing46You stand a greater risk of injuring yourself or your shipmate during mooring and unmooring operations than at any other time. So remember_.A.Do not wear safety shoes, gloves and an overall with long sleevesB.Stand as closely as possible in the rope railC.Do not work too close to the drum when handling wires/ropesD.If the line takes charge, try to stop it with your feet/hands 47Which one of the followings is not a right way to behave during mooring unmooring operation?A.Stay close to the towline at all timeB.Beware the bightsC.When operating the winch/windlass, ensure that yourself understand the controlsD.When the tug is being secured or let go, monitor the operation closely48The most serious danger from synthetic ropes is_,which is the sudden release of the energy stored in the stretched synthetic line when it breaksA.RottingB.Wear and tearC.SnapbackD.Weakness49Unlike wires, synthetic ropes do not give audible_of pending failure and may not exhibit any broken elements before completely partingA.brokenB.slackC.trackD.sign50a ship does not possess an all-wire or all-synthetic mooring outfit, the best procedure is to use_ for spring and breast lines and _for headlines and stern lines.A.The synthetic ropes, the wiresB.The wires,the synthetic ropesC.The wires,the synthetic ropes with the wiresD.The synthetic ropes with the wires, the same as the former51The ideal rope for stoppers should satisfy the following requirements except that _. A. The stopper should be of synthetic fiber rope B. The size of the stopper should be as large as possible C. The stopper should be of low stretch material D. The stopper should be very flexible52. Usually, do not use more than _ complete rope turns around the drum. A. 1-2 B. 3-4 C. 5-6 D. 7-853If you have steel wire ropes leading in the same direction with other ropes, which will take the most of the load? A. Steel wire rope B. Manila C. Nylon D. Polypropylene rope54. Snapback is a serious danger when we are handling_. A. Wire rope B. Nylon ropes only C. Synthetic ropes D. Manila55. Choose one statement which is correct according to safe mooring practice. A. Synthetic rope can be used as a stopper on wires B. A safety helmet without chinstraps is allowed C. . have the same elongation as used ropes D. Two or more lines leading in the same direction should always be of the same material.56. What does a navigator who uses an ECDIS require? A. Good navigational knowledge and a professional job attitude B. Good computer knowledge C. Good system knowledge D. Nothing special57. When own ships position input to ECDIS wrong, what is the result? A. Nothing B. ECDIS will give warning C. ECDIS will automatically be switched off D. Position, range and bearing taken on the ECDIS will be wrong 58. What should you avoid when receiving work order? A. Having other people help you with your work B. Swearing C. Wasting time on having procedures explained D. Misunderstandings 59. What kind of information dose the fire plan contain? A. Fire alarm signal, fire instruction and your assignment B. location of firefighting equipment onboard C. How to use firefighting equipment onboard D. Information on how handle different types of fires 60. Do you need to measure oxygen levels before entering an enclosed space? A. Yes, always B. No C. Not if you measure for toxic gases D. Yes, but not if you ventilate properly first for 24 hours 61. What is the most important treatment concerning a foreign body in the eye? A. Rinsing of the eye B. anesthetic C. Wring the eye-lid to prevent blinking D. Close the eye for a while62. What is the meaning of UEL? A. Upper exposure level B. Upper explosion level C. Upper explosive level D. Upper evaporation level 63. In which way may intake of poisoning material not occur? A. By inhaling B. By skin penetrating and skin absorbing C. By swallowing D. By protective measures64. What is OPA 90? A. Oil Production Act of 1990 B. ore Pollution Act of 1990 C. Oil Pollution Act of 1990 D. Ore Production Act of 199065. What is the maximum oxygen percentage allowed in a tank? A. 12% B. 6% C. 8% D. 10%66. What does OBO mean? A. Oil Bulk Oil B. Ore Bulk Oil C. Only Bulk Ore D. Only Basic Oil67. What is the meaning of LEL? A. Low evaporation limit B. Lower exposure limit C. Lower explosive limit D. Low explosion level68. What kind of fixed extinguishing plant is installed in an oil tankers engine room and pump room? A. Powder plant B. Foam plant C. CO2 plant D. Water spray plant69.Before any portable gas indicators are brought to the measuring spot, what is very important to do with these analyzers first? A.To do a full calibration B.Just renew the batteries C .Zero adjust them D.Just check the filters70. Which one of the following factors does not reduce the effect of free surface? A. Minimum number of daily service tanks in use B. Where possible, tanks either full or empty C. GZmax at minimum 25 D. Bilges pumped out71. Where is the draft largest when the ship has an aft trim? A.Forward B.Aft C.Midships D.The drafts are equal all over the ship72. What percentage of the baggage is required to be checked at Security Level 1? A. 25-50% B. The percentage is not specified C. 100% D. 5-15%73. Who is responsible for the development of the ship security plan? A. The company security officer B. The classification society C. The port facility security officer D. The ship security officer74. Who is responsible for the regular security inspections of the ship? A. The company security officer B. The classification society C. The port facility security officer D. The ship security officer 75. For whom is the ISM Code mandatory? A. All vessels 500 GRT and above B. All tankers C. All vessels built after 1998 D. All vessels on international routes 76. Who can contact the Designated Person? A. The designated person B. The captain C. All senior officer D. All officers and crew77. Who can suggest changes to the SMS? A. The designated person B. The captain C. All officer and crew D. All senior officer78. How many hours of rest is the minimum required in a normal day? A. 14 hours B. 10 hours C. 6 hours D. It does not matter as long as my overtime is paid for79. The ISM code is pat of _. A. SOLAS B. STCW C. MARPOL D. High Speed Craft Code80. When are you allowed to throw plastic garbage overboard? A. Being more than 25 miles from shore B. Only at night when its dark C. Being more than 6 miles from shore D. Never 81. Why is the ISM Code mandatory? A. To satisfy US Coastguard B. To improve safety C. To save money for the company D. To get lover insurance premiums82. Why should you report accident to the Designated Person? A. To find some one to blame B. To prevent it from happening again C. So the company can calculate your safety bonuses D. To be able to receive an insurance claim83. Shipboard Emergency Drills must be carried out at least_? A. Once every third year B. Once a month C. Once a year D. Once a week84. What is the purpose of the girders in the tank? A. They support the stiffeners B. They transfer all the sea forces acting on the plating C. They support the stiffeners and take up some of the sea forces D. I dont know85. When dose a bulk carrier experience extreme tension in bottom structure during fast rate loading? A. During ballasting in port B. During loading of heavy cargo in mid-ship holds C. During correct loading pattern, but with heavy cargo D. During loading light cargo in end holds86. What is the difference between static and dynamic forces on a ship hull? A. The former is set up by cargo and sea while the latter by wave action B. The former is acting during loading and from wave action while the latter before and after the ship has been loaded C. The former is set up by cargo while the latter by wave action D. I dont know87. What is the worse case consideration for the hull girder at sea? A. When the wave crest are fore and aft B. When a wave length between the crests is approximately equal to the length of the ship C. If the wave crest is amidships D. When a wave length is two times of that of the ship88. Who is normally deciding which search pattern to use? A. CRS B. OSC C. SMC D. SRU89. What is the meaning of the word “ROGER” when used in radio communication? A. Please repeat your message B. Not readable C. Correct D. I have received your transmission satisfactorily90. What type of oil is most suitable for reducing the effect of heavy seas? A. Crude oil B. Fuel oil C. Vegetable oil D. Lubricating oil91. Communication between ship and aircraft is _. A. Easy and straight forward B. Difficult because of different radio bands C. Not possible D. Not allowed92. When is the parallel sweep search used? A. When searching a small area B. When searching a large area C. When searching over hilly terrain D. When searching during night93. The following information may not be required to be communicated to a distressed craft? A. Own vessels identity, call sign, name and position B. Own vessel speed and ETA to distressed craft C. Distresses crafts true bearing and distance from ship D. Rescue award if successful94. A search and rescue region is _. A. A search area B. An area covered by air surveillance C. An area covered by radar surveillance D. An area of defined dimensions95. The first ship arriving of a SAR incident should _. A. Assume OSC duties B. Assume SMC duties C. Assume ACO duties D. Assume SRU duties96. Which standard man overboard manoeuvre is considered the best during bad visibility conditions? A. The Anderson turn B. The single turn C. The one turn D. The Williamson turn 97. Can the RCC and RSC use NAVTEX for shore to ship distress traffic? A. Yes B. No C. Only if no other communication is available D. Only at night time 98. What is most important when using expanded square search? A. Accurate navigation B. Constant speed C. Fixed ROT D. Fixed turn radius99. What is most important for visual search purposes? A. Design of individual search patterns B. Design of specia