单项选择题
A.you can stop within your visibility range
B.you can take proper and effective action to avoid collision
C.you are traveling slower than surrounding vessels
D.no wake comes from your vessel
单项选择题 Every vessel shall proceed at a safe speed（）the prevailing circumstances and conditions
单项选择题 Every vessel shall at all times proceed at a safe speed so that she can（）.
单项选择题 As you approach Shreves cut-off you see Red River LandingGage (302.4 AHP) which reads 4.2 feet. Which of thefollowing statements is TRUE? （）