white light FL (2) and a topmark of 2 black spheres
occulting green light and may be lettered
yellow light and will be numbered
continuous quick white light and may be numbered
单选题When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.A a junction with the preferred channel to the leftB a sharp turn in the channel to the rightC the starboard side of the channelD a wreck to be left on the vessel's port side
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单选题A preferred-channel buoy will show a（）.A white light whose characteristic is Morse (A)B group-occulting white lightC composite group-flashing (2 + 1) white lightD composite group-flashing (2 + 1) red or green light
单选题A buoy with a composite group-flashing light indicates a(n)（）.A bifurcationB fish net areaC anchorage areaD dredging area
单选题You are entering an east coast port and see a buoy with a yellow triangle painted on it.This indicates（）.A you are in the vicinity of the ICWB the buoy is a special markC the buoy is off stationD the buoy designates a sharp turn in the channel
单选题When using a buoy as an aid to navigation which of the following should be considered?（）A The buoy should be considered to always be in the charted locationB If the light is flashing，the buoy should be considered to be in the charted locationC The buoy may not be in the charted positionD The buoy should be considered to be in the charted position if it has been freshly painted
单选题A lighted preferred-channel buoy may show a（）.A fixed red lightB Morse (A) white lightC composite group-flashing lightD yellow light
单选题A mid-channel buoy，if lighted，will show a（）.A fixed red lightB Morse (A) white lightC green lightD flashing red light
