You can fortify the blocks, With larger ships I fortify edges and leave a few squares for him to chomp on. This way I always know where the damage will spawn.
@@user-gh9lc5wv6c - it's alotttt of metal to collect in survival. I found it easier at the time to just fortify the outside edges and leave a single edge for him to chomp on. I think I later went back and completed the floor fortifications.
The calendar on the bridge is reading 346 days. So this ship was at about 115 hours of game play. It could definitely be done faster but I was enjoying the game!