1、Two vessels are abreast of each other and passing port to port in a confined waterway. What should you expect as your bow approaches the screws of the other vessel?A. Your speed will significantly increaseB. Your drift will significantly decreaseC. Your bow will sheer towards the other vesselD. Your
2、 bow will sheer away from the other vesselThe height of a tide can be increased by_.A. A storm surge B. A high pressure areaC. The jet streamD. A cold frontThe four standard light colors used for lighted aids to navigation are red, green, white, and _A. PurpleB. OrangeC. BlueD. YellowEcdis must be a
3、ble to perform all of the following except _A. Determine true bearing and distance between two geographical pointsB. Determine magnetic compass deviationC. Transform a local datum to the wgs84 datumD. Convert graphical coordinates to display coordinatesIf practical, when shall a manned vessel being
4、towed sound her fog signal?A. Immediately before the towing vessel sounds hersB. Immediately after the towing vessel sounds hersC. As close to the mid-cycle of the towing vessels signals as possibleD. At any times as long as the interval is correctWhich information does the outer ring of a compass r
5、ose on a nautical chart provide?A. VariationB. Magnetic directionsC. True directionsD. Annual rate of variation changeWhen steering a vessel, a good helmsman does not _A. Use as much rudder as possible to maintain courseB. Consider steering a vessel a highly responsible jobC. Use as little rudder as
6、 possible to maintain courseD. Advise his relief of the course being steeredWhich statement is true concerning the light used to accompany whistle signals?A. It is only used to supplement short blasts of the whistleB. It is mandatory to use such a lightC. The light shall have the same characteristic
7、s as a masthead lightD. All of the aboveThe easiest way to anchor a vessel in a current is to _AStem the current and make very slow headway when the anchor is droppedBStem the current and be falling aft very slowly when the anchor is droppedCStem the current and endeavor to make neither headway nor
8、sternway when the anchor is droppedDStop all headway through the water and keep the current astern when the anchor is droppedThe type of current which will have the greatest effect on the course made good for your vessel is _Aone flowing in the same direction as your course steeredBone flowing in th
9、e opposite direction as your course steeredCone that flows at nearly right angles to your course steeredDa rotary current in which the direction of current flow constantly changesThe velocity of the wind， its steady direction，and the amount of time it has blown determines a wind driven currents _ATe
10、mperatureBDensityCDeflectionDSpeedTides are superimposed on nontidal rising and falling water levels，caused by _AfreshetsBfloodsCriver flowsDseismic eventsWhich statement is TRUE concerning apogean tides _AThey occur only at quadratureBThey occur when the Moon is nearest the EarthCThey cause diurnal
11、 tides to become mixedDThey have a decreased range from normalWhich statement is TRUE concerning equatorial tides _AThey occur when the Sun is at minimum declination north or southBThey occur when the Moon is at maximum declination north or southCThe difference in height between consecutive high or
12、low tides is at a minimumDThey are used as the basis for the vulgar establishment of the portYou are anchoring in a river where the current is from one direction onlyThe best way to lay out two anchors is to have them _ADirectly in line with the bowBSide by side，with their lines on the port and star
13、board sideCSo that their lines form an angleDOn top of one anotherYou are docking a vesselWind and current are most favorable when they are _Acrossing your course in the same directionBcrossing your course in opposite directionsCparallel to the pier from aheadDsetting you on the pierA type of precip
14、itation that occurs only in thunderstorms with strong convection currents that convey raindrops above and below the freezing level is known as _ASleetBHailCFreezing rainDRimeIf the center of low pressure is due west of you in the Northern Hemisphere，which wind direction should you expect _ASouth to
15、westBSouth to eastCWest to northDNorth to eastThe AMVER system requires _ASailing plans to be sent before departureBMore frequent reports in heavy weatherCArrival reports to be sent within 8 hours of arrivalDA position report within 24 hours of departureThe apparent winds speed can be zero，but only
16、when two conditions are presentOne condition is that the true wind _AMust be from dead aheadBSpeed must be zeroCMust be from dead asternDMust be on the beamThe dense black cumulonimbus clouds surrounding the eye of a hurricane are called _ASpiral rainbandsBCloud wallsCFunnel cloudsDCyclonic spiralsWeather conditions in the middle latitudes generally move _AEastwardBWestwardCNorthwardDSouthward
