"Here!" called another midshipman, overtaking the pair with lusty strokes.
"Keep Mr. Driscoll up," called Dave, as he swam away. "I've got to count heads fast."
Another midshipman came above water, and Dan Dalzell was at him, like a flash, supporting the new arrival, who was one of the poor swimmers.
That left three men to be accounted for.
Further down the stream still another head appeared. Only for a moment or two, this midshipman succeeded in keeping his head above water.
"I'll get that man," cried Farley, as he and another midshipman started with powerful strokes after the man who was going down for the second time.
"There's a seat floating!" shouted Dalzell.
Darrin plunged forward for it, until he saw one of his crew nearing it ahead of him.
"Hold that as a life-buoy!" called Dave.
Hardly had he given this order when another midshipman made himself heard, as he trod water.