PREVIEW

... >This is calculated on the basis of at least twenty hours of sailing per day.

Aside from the time to collect supplies and rest in the water, there is hardly much free time to squander.

In particular, with the current energy reserves of the submarine, it can only support the power output of about three days at most.

Before the energy is completely consumed, it is necessary to find a way to find enough energy ore to replenish it.

Or, you have to hunt alien sea monsters ...

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