A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECT

In a narrow channel or fairway when overtaking can take place only if the vessel to be over-taken has to take action to permit safe passing， the vessel intending to overtake shall indicate her intention by sounding appropriate signal． This means that ________ ．

A.the vessel to be overtaken shall sound appropriate signal first

B.the overtaking vessel shall sound appropriate signal first

C.the overtaking vessel shall take action to permit safe passing

D.the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal

A vessel may use any sound or light signals to attract the attention of another vessel as long as ______.

A.white lights are not used

B.red and green lights are not used

C.the signal cannot be mistaken for a signal authorized by the Rules

D.the vessel signals such intentions over the radiotelephone

Echo sounder sends a (无线电信号)from the bottom of the ship to the seabed

A.radio signal

B.radio wave

C.signal

D.signal radio

A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the ______.

A.distress position

B.spoken words “Mayday, Mayday, Mayday”

C.ship’s name

D.ship’s call letters

A vessel is "in sight" of another vessel when ______.

A.she can be observed by radar

B.she can be observed visually from the other vessel

C.she can be plotted on radar well enough to determine her heading

D.her fog signal can be heard

Which statement concerning satellite EPIRBs is TRUE ________．

A.Once activated，these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon

B.The coded signal identifies the nature of the distress situation

C.The coded signal only identifies the vessel's name and port of registry

D.If the GMDSS Radio Operator does not program the EPIRB，it will transmit default information such as the follow-on communications frequency and mode

________is the most visible signal of distress from a lifeboat at sea in the daytime.

A.Smoke signal

B.Flash signal

C.Fire signal

D.Radio emergency transmission

Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.

A.When at anchor, the pilot vessel is only required to sound anchor signals

B.The identification signal must be sounded any time the pilot vessel is underway

C.The pilot vessel may only sound the identity signal when making way

D.All of the above