航海英语航行值班与海上避碰章节练习(2019.04.23)

单项选择题
A vessel（）a crossing vessel，shall not normally enter a separation zone or cross a separation line.
A.including
B.inclusive of
C.except that
D.other than
单项选择题
In determining a safe speed（）shall not be among those taken into account.
A.the characteristics，efficiency and limitation of the radar equipment
B.any constraints imposed by the radar range scale in use
C.the effect on radar detection of the sea state，weather and other sources of interference
D.the safe working load of the cranes both on board and ashore
单项选择题
When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.
A.crossing situation
B.head-on situation
C.restricted visibility
D.overtaking situation
单项选择题
If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
A.gear extending from the side or stern
B.gear that restricts maneuverability
C.less than 50 percent trolling lines
D.None of the above
单项选择题
Which statement about the Navigation Rules is TRUE?（）.
A.The rules require vessels to comply with Traffic Separation Scheme regulations
B.The rules use the term safe speed
C.The Rules permit a stand-on vessel to take action prior to being in extremis
D.All of the above are correct
单项选择题
A vessel constrained by her draught may，in addition to the lights prescribed for power-driven vessels in Rule 23，exhibit where they can best be seen（）or a cylinder.
A.two all-round red lights in a vertical line
B.three all-round red lights in a vertical line
C.two all-round yellow lights in a vertical line
D.three all-round green lights in a vertical line
单项选择题
A vessel aground at night is required to show two red lights in a vertical line as well as （）.
A.not under command lights
B.restricted in her ability to maneuver lights
C.anchor lights
D.sidelights and a sternlight
单项选择题
The Rules state that vessels may depart from the Rules when（）.
A.there are other vessels in the vicinity
B.operating in a traffic separation scheme
C.engaged in a situation involving more than two vessels
D.necessary to avoid immediate danger
单项选择题
One of the factors which affects the circulation of ocean currents is（）.
A.humidity
B.varying densities of water
C.vessel traffic
D.the jet stream
单项选择题
A vessel engaged in mine clearance operations is called（）.
A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel constrained by her draught
D.a vessel not under way