CHESAPEAKE BAY: Icebreakers keep waters open for oystermen Published: Monday, February 24, 2014 Icebreaker ships this winter have kept the Chesapeake Bay open for oystermen during one of the coldest periods in years. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.