Under these circumstances, Uncle Prudent and Phil Evans would have found some difficulty in carrying out their plan of escape, even admitting that they could leave the aeronef.
During the day, as Robur passed them he stopped for a moment, and without seeming to attach any importance to what he said, addressed them carelessly as follows: "Gentlemen, a sailing-ship or a steamship caught in a fog from which it cannot escape is always much delayed.
It must not move unless it keeps its whistle or its horn going.

It must reduce its speed, and any instant a collision may be expected.
The "Albatross" has none of these things to fear.

What does fog matter to her?
She can leave it when she chooses.

The whole of space is hers." And Robur continued his stroll without waiting for an answer, and the puffs of his pipe were lost in the sky.
"Uncle Prudent," said Phil Evans, "it seems that this astonishing "Albatross" never has anything to fear." "That we shall see!" answered the president of the Weldon Institute.
The fog lasted three days, the 19th, 20th, and 21st of June, with regrettable persistence.

An ascent had to be made to clear the Japanese mountain of Fujiyama.