A.reduce the length of the cable
B.pay out more anchor cable
C.back the engines
D.swing the rudder several times to work the anchor into the bottom
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A.Distress
B.Safety
C.All clear
D.Urgency
A.a ship is threatened by grave and imminent danger and requests immediate assistance
B.a calling station has an urgent message about the safety of a person
C.the message following the prefix will be about the safety of navigation
D.the message following is a meteorological warning
A.is 50% water saturated
B.is 90% water saturated
C.temperature is greater than the dew point temperature
D.temperature is equal to,or below the dew point temperature
A.in doubt that another vessel is taking sufficient action to avoid a collision
B.altering course to starboard
C.altering course to port
D.the stand-on vessel and will maintain course and speed
A.SOS three times
B.Additional transmissions to aid direction finding
C.E for one minute,followed by T for one minute
D.Two tones,10-15 seconds each
最新試題
The best method to stop a vessel from dragging anchor in a sand bottom is to().
There is not()depth of water around the area centered at the lighthouse.
Tripping defects in anchors frequently occur in().
Fog forms when the air().
There is plenty of()at this area.
PAN-PAN repeated three times over the radiotelephone indicates which type of message will follow?()
What is normally used to pass a mooring line to a dock?()
To develop maximum anchor holding power,the optimum angle between the anchor’s shank and the mooring lines is().
Which is NOT a distress signal?()
Which radiotelephone signal indicates receipt of a distress message?()