单项选择题

A vessel is in sight of another vessel when she（）.

A.can be observed by radar
B.has determined that risk of collision exists
C.is sounding a fog signal which can be heard on the other vessel
D.can be observed visually from the other vessel

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单项选择题

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

单项选择题

A vessel is approaching from dead ahead． Both of her sidelights are visible and her range lights are in line. Which of the following could you do first?（）.

A.Sound one blast of the whistle
B.Alter course to starboard
C.Construct a radar plot
D.Sound the danger signal