Marina Exam Reviewer: An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter S (Sierra) to signify that ________________.

Marina Exam Reviewer 

An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter S (Sierra) to signify that ________________. 

A. I am operating astern propulsion 
B. I am altering my course to starboard 
C. My vessel is stopped and making no way through the water 
D. I am altering my course to port 


Answer:     A. I am operating astern propulsion 

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