After awhile speed was reduced and Barney relieved Frank.
The young explorer, somewhat fatigued, went into the cabin and sat down.
Roger Harmon joined him.
They could look through the bull’s-eye windows upon either side and watch the mighty panorama.
This was most interesting to Harmon especially.
“I don’t understand how you can make a course!” he said.
“Easy enough!” replied Frank. “I simply go by the chart as given of the sea’s surface.”
“Ah! but has any accurate chart been yet made of these waters?”
“I shall go by the chart of former explorers as far as I can.”
“And what then?”