A small ship had crashed into their shore after a fire storm occurred stowing it away and it carried several crates of the stones.
The previous priestesses before her had been studying the summoning magic circle for generations since the calamity but each time they were unsuccessful up until yesterday.
The boiler room was simply a space where water is brought to a boil. The steam was transmitted to a separate engine room located at the next room through a connecting flue (a duct for smoke and gasses), where it was utilized to power the vessel.
And with such a large ice ship weighing more than the cargo ship on almost full load, a single boiler wouldn't suffice.
