I'll leave that for you to guess. Write me an e-mail and tell me what you think. We wandered in a maze of these trying to find the west end of a big ice-free crack north of Siple Island. The Nathaniel B. Palmer breaking ice. Notice the crack going off away from the ship, like a crack in breaking glass.
Older ice breaks in an entirely different way than new ice.
The ship slides up on top of old ice and smashes the ice with its weight. A grounded iceberg with a patch of fast ice attached to it on the left. It will make a big, cold splash when it goes.