“Better turn in and get a nap, Danny-boy,” he urged, in an undertone.

“Say!” uttered Danny Grin. “You must know something big is coming off, and you don’t want me to have a hand in it!”

Dave picked up his night glass and began to use it in an effort to help out his subordinate, who stood near him. From time to time Dan also used a glass. A freshening breeze blew in their faces as the boat lounged indolently along on its way. It was drowsy work, yet every officer and man needed to be constantly on the alert.

Despite his denials that he was sleepy, Danny Grin braced himself against a stanchion of the bridge frame and closed his eyes briefly, just before dawn. He wouldn’t have done it had he been the ranking officer on the bridge, but he felt ghastly tired, and Darrin and Ensign Tupper were there and very much awake.

With a start Dan presently came to himself, realizing that he had lost consciousness for a few seconds.

“Oh, it’s all right,” Dan murmured to himself. “Neither Davy nor Tup will know that I’m slipping in half a minute of doze.”

His eyes closing again, despite the roll of the craft, he was soon sound enough asleep to dream fitfully.

And so he stood when the first streaks of dawn appeared astern. It was still dark off over the waters, but the slow-moving destroyer stood vaguely outlined against the eastern streaks in the sky.

Ensign Tupper was observing the compass under the screened binnacle light, and Darrin, glass to his eyes, was peering off to northward when the steady, quick tones of a man of the bow watch reached the bridge:

“’Ware torpedo, coming two points off port bow!”