Hello, all! Thanks for all the help I have received on other threads. My latest science fiction invention is an battle ice cruiser. I have done the math for how to use energy weapons to compromise the ice shield around my ice ship but have no clue as to how to calculate how much impact ice at -200 degrees centigrade can handle before shattering. The ice ship is five miles long and 2.5 miles thick and is propelled by an Orion type stardrive. The thinest area of ice around the rocky core of the ice ship is 1000 feet. My estimate on the mass of the ice is 4.35 billion metric tons. please help. My question I want to know is how much punishment from kinetic kill weapons or nukes can it handle?