“Now, by the same methods, echoes may be obtained from icebergs. Precautionary signals are being sent out all the time by the transmitter on board, and when the echoes come back, we can tell if there are any icebergs in the vicinity, just how far off they are, and govern the ship’s movements accordingly.”
“It’s a sort of comforting feeling,” said Herb, “to know that tonight and every night, even while we’re asleep, the iceberg alarm is on the job.”
“Never thought of it before, did you?” asked the ensign. “Uncle Sam’s a pretty good relative, and he looks after the safety of his nephews. This ship has a good many wonders packed between the bow and stern, and you’ll learn more of them before your voyage is over.”
“I guess that’s one of the things that Johnson meant when he was talking to us last night,” observed Joe. “He told us to come into the wireless room some time, and he’d show us what a busy place it is.”
“No time like the present!” exclaimed Bob. “Let’s go now.”
CHAPTER XXII
STARTLING NEWS
There was a chorus of approval from all but Jimmy.
“Don’t forget it’s near supper time,” he objected.
Joe threw up his hands in mock despair.
“That precious stomach of yours!” he groaned.