單項選擇題You are advised to enter the traffic route at about 1730 hours,because a vessel is scheduled to enter at the time when you intended to enter.What can you understand from this seaspeak?().

A.It's a warning of navigation for my vessel
B.It's an advice from Port Control to order my vessel not enter the traffic route of the harbor
C.It's an advice to change my estimated time of entering the traffic route
D.It's an order from the VTS to indicate my vessel to follow the traffic route


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1.單項選擇題A vessel displaying three red lights in a vertical line is().

A.not under command
B.aground
C.dredging
D.constrained by her draft

2.單項選擇題A towing light is().

A.shown below the sternlight
B.white in color
C.displayed at the masthead
D.a yellow light having the same characteristics as the stern light

3.單項選擇題A signal of intent must be sounded in international waters by().

A.a vessel meeting another head-on
B.a vessel overtaking another in a narrow channel
C.a vessel crossing the course of another
D.the give-way vessel in a crossing situation

4.單項選擇題A power-driven vessel leaving a quay or wharf must sound what signal? ()

A.Three short blasts
B.A long blast
C.A prolonged blast
D.No signal is required

7.單項選擇題A power-driven vessel pushing aheador towing alongside displays navigation lights and().

A.two all-round red lights in a vertical line
B.two yellow towing lights in a vertical line
C.two white masthead lights in a vertical line
D.two lights on the stern,one yellow and one white

8.單項選擇題A signal of one prolonged,one short,one prolonged,and one short blast,in that order is given by a vessel().

A.engaged on pilotage duty
B.in distress
C.at anchor
D.being overtaken in a narrow channel

9.單項選擇題A vessel constrained by her draft may display().

A.three all-round red lights
B.two 225°red lights
C.three all-round blue lights
D.two 225°blue lights

10.單項選擇題A sailing vessel shall not impede the safe passage of a().

A.power-driven vessel following a traffic lane
B.pilot vessel enroute to a pilot station
C.law enforcement vessel
D.All of the above