“Say, where do you get that Navy stuff?”

“Gobs?” Charlie chuckled. “Oh, I’ve got a sea-goin’ dad. He had a U.S.N.R.F. commission during the war.”

“That so? Great!”

“You bet yer. Say, Bill, hadn’t you better get our own engine going? The Flying Fish will be taking off right away. She’s a regular monoplane now.”

Bill shook his head, and turned to face the submarine again.

“They won’t take off for a few minutes yet. As she is, those wings will never hold her weight in the air. And for another thing, she sets much too low in the water to ever get off.”

“But, see, Bill—she’s rising. She’s getting higher in the water all the time.”

“By Jingoes! She is, at that!”

“How do they do it?”

“Same method as a submarine helps to raise itself from the bottom. Water is forced out of certain compartments and air pumped in.”