Last winter, a dark-blue barge temporarily "uglified" a residential area near me. (It was intentionally sunk at a damaged-dock work site for the winter).
When the ice melted in April, they pumped out the water and went off to parts unknown for months...then returned to repair the original site -- in September!
I "sort of" sympathize with the barges, but there should be an official single site where they can all overwinter for a nominal fee.