"How do we handle the oxygen supply?"
"Simple, soul candles from the West Sea can meet that need. Although they were not originally intended for this purpose, they do indeed provide oxygen when lit."
Several blue candles appeared in the calloused hands of the seasoned craftsman. Charles had seen these once before; they seemed to be a medium used to summon little black paper figures.
He truly had not expected that they could also supply oxygen.
After making his rounds on the ship, Charles nodded in satisfaction. Truly worthy of a top-notch ship designer—everything he had anticipated and even what he hadn't, the designer had already thought of.
Such extensive modifications were on par with building a brand-new ship, yet astonishingly, these people achieved it in just one month.
"Not bad, I quite like it. Although I didn't say it before, I will prepare the funds for the ship modification."