"It's a guess I've been making myself," answered Jack.

Their surmises were all too true, for very soon Commander McClure, who had been ashore for some hours now while the businesslike preparations were in progress, came alongside in the launch of the commandant of the yard and called his staff of officers into executive conference down in the officers' quarters. The news spread quickly through the Dewey as though by magic, that the submarine was due to get away during the night under sealed orders. A few minutes later Bill Witt confirmed the news. He was on night watch and had heard it from the officer of the deck.

Under sealed orders! Where and what!

CHAPTER IV

SOMEWHERE IN THE NORTH SEA

The Dewey was off! Shortly after midnight the little craft got under way, with her nose pointed out of the harbor.

"I guess it's 'so long U.S.A.' this time," confided Jack to his chum, as they stood together, aft the conning tower.

"Gee, I'm glad we're off!" answered Ted. "I only hope we are going over there with the rest of the boys."

Although they had yet to learn officially their destination, the Brighton boys, together with other members of the crew of the Dewey, took it for granted they now were on their way to Europe to join the great American fleet and battle with the Imperial German Navy for the mastery of the sea. It had been noised about ever since their enlistment that Uncle Sam's submarine fleet was soon to be sent abroad.

"Going to fight the U-boat snakes with made-in-America snakes!" was the way Bill Witt had sized up, the situation one evening when he and the Brighton recruits had been discussing the likelihood of their getting out on the firing line at an early date.