Jules Verne: Twenty Thousand Leagues Under the Seas

SECOND PART
CHAPTER 12: Sperm Whales and Baleen Whales (continued)

"Perhaps," Conseil said, "but in a nutshell, the Nautilus can hold only a certain number of men, so couldn't master estimate their maximum?"

"How, Conseil?"

"By calculating it. Master is familiar with the ship's capacity, hence the amount of air it contains; on the other hand, master knows how much air each man consumes in the act of breathing, and he can compare this data with the fact that the Nautilus must rise to the surface every twenty-four hours . . ."

Conseil didn't finish his sentence, but I could easily see what he was driving at.

"I follow you," I said. "But while they're simple to do, such calculations can give only a very uncertain figure."

"No problem," the Canadian went on insistently.

"Then here's how to calculate it," I replied. "In one hour each man consumes the oxygen contained in 100 liters of air, hence during twenty-four hours the oxygen contained in 2,400 liters. Therefore, we must look for the multiple of 2,400 liters of air that gives us the amount found in the Nautilus."

"Precisely," Conseil said.

"Now then," I went on, "the Nautilus's capacity is 1,500 metric tons, and that of a ton is 1,000 liters, so the Nautilus holds 1,500,000 liters of air, which, divided by 2,400 . . ."

I did a quick pencil calculation.

". . . gives us the quotient of 625. Which is tantamount to saying that the air contained in the Nautilus would be exactly enough for 625 men over twenty-four hours."

"625!" Ned repeated.

"But rest assured," I added, "that between passengers, seamen, or officers, we don't total one-tenth of that figure."

"Which is still too many for three men!" Conseil muttered.

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