it would be cool to have ice floes in the game IMO, but I am not getting my hopes up. Would take a lot of work to get the dynamics of something that complex to work, interaction with ships, damage and so on. But yes, it would be a cool feature.
How many of the ships in the game are even ice capable? The Esperanza of course. The Igor K to some degree? Whatever it would be doing that far from port - swept away by a tsunami or something... the supply ship perhaps?
