Any fears of the ice sinking that ship?
Not the ice. We went in summer (January) when the sea ice is the thinnest and the icebergs, while pretty big, are spaced out so that the ship could easily navigate around them.
However, the very next excursion after we finished our cruise our icebreaker ship hit some uncharted rocks near the Antarctic Peninsula and............wait for it.............
.....sank. Yep. It went to the bottom. Fortunately, since it was very shallow there (obviously, the effin ship hit underwater ROCKS there!) no one was hurt. But another ship had to come pluck the passengers from the ship and take them back to Argentina. The ship had to be scrapped.
True story! But we made it fine.
I would never do it again, but it was quite an experience, including passing through Drake's Passage between the tip of S. America and the Antarctic Peninsula, which has the strongest and roughest ocean current in the world. The entire South Pacific current has to curl around the tip of S. America to get to the S. Atlantic in just under 600 miles of open water.
Save your money. It ain't