"Nothing doing!" the Yank snapped. "Up with you. This is more fun, see? Maybe some other dope will stick his head through a door. I can do with a little side-arms practice. Get going!"

Freddy didn't bother arguing after that. With Squadron Leader Hixon, and a couple of the Lockheed's crew, he went scrambling up the companion ladder, and out onto the conning tower bridge. Down below, Dawson and the remaining two of the Lockheed's crew kept their eyes and their captured Lugers fixed on the Germans in the central control room. Seconds ticked by to add up to a minute. And the minutes added up to total three, then four. Tension began to tell on Dawson, and a whole flock of little worries and doubts began to play about in his brain. True, he was standing guard over the "nerve center" of the U-boat. And true, his prisoners were the commander and his junior officers. Just the same, he couldn't hope to keep the situation just as it was indefinitely. Maybe the commander and his officers were cringing cowards, but that didn't guarantee that it was the same with every member of the U-boat's crew. Maybe there was a hero or two among them who would rather take death than capture and imprisonment. Or, at least, perhaps there was one among them who might crack easily. One who might go clean off his nut, and do anything, such as open the sea valves, to break the terrific, tormenting strain. And whether a brave hero or a man gone mad opened the sea valves and let the ocean come pouring in, the result would be the same!

And so, as each new second ticked by, another little bead of cold, clammy sweat formed on Dawson's forehead. And with each passing instant of time he had to battle harder to keep from showing his nervousness by yelling up to Freddy Farmer to find out if anything had been sighted. Finally, when his nerves were so tightly drawn that they threatened to snap and fly off in small pieces at almost any second, he suddenly heard the welcoming sound of the English youth's voice.

"Cheerio, Dave, old thing!" Freddy shouted down the hatch. "Luck of the Devil for us, for fair. The King's Navy, no less, Dave, my lad. What a beautiful sight to see, and—"

"Save it!" Dawson roared back at him. "What in thunder do you see?"

"A British cruiser, of course!" the English youth told him. "Didn't I say the King's Navy? Well, there she is, and coming right for us. Happy days are here again, what?"

Dawson gave a little shake of his head, and dropped the crazy conversation. He realized that Farmer's joy at sighting a British cruiser, which had come up out of nowhere, had sent him just a little joyously haywire for the moment. As a matter of fact, Dawson's own head felt a little light, and he almost smiled at the U-boat commander as he jerked his head upward and gave the order.

"Top-side for you!" he said in German. "A British cruiser is bearing down toward us. Get up there and get an eyeful. Hey, Freddy! Stupid is coming up! Keep your eye on him. I'll be up in a minute."

Right after he had shouted the last in English to Freddy Farmer up on the conning tower bridge, Dave turned to the two members of the Lockheed's crew who had remained below decks with him, and gave them a happy grin and a nod.

"Okay, up you go, too," he said. "And thanks for giving me a hand down here. Too bad we didn't get some—"