There is no doubt that in the modern age of working on the water, people have to want it passionately in order to succeed.  This especially applies to women.  Historically speaking, referring to the works we have read (Rediker, and Melville just to name two) passion for the sea was not a prerequisite.  Men in port towns were taken off the street and conscripted into service.  But now the job is all about passion.  Whether or not one is in love with the sea or is willing to risk everything for lots of money there has to be a strong pull to work on the water.  Every time a commercial fisherman goes out to work, he, or she, is risking their life. 

-mention higher death rates than any other job/career in the country

-mention additional risk for women because of smaller stature as well as harrasment, etc. 

-mention loneliness, the loss of social connections