Aw, you don't either!" he
declared, after searching his comrade's face intently.

"All right," admitted Jimmie, laughing. "I just wanted to take some of
that overconfidence out of your system, that's all!"

"Where do you think we are bound for, Frank?" inquired Ned.

Frank placed a finger on his lips, glancing about to make sure that no
one was close enough to overhear his whispered words.

"Helgoland!" he said, cautiously.

Instantly the others jumped to their feet, slapping Frank's shoulders,
shaking his hands and otherwise showing their appreciation of his
shrewdness. Their enthusiasm could scarcely be restrained.

"Sherlock Shaw, The Scout Sleuth!" shouted Jimmie.

"Frank, you're the real, old-fashioned guesser!" declared Jack.

"How did you do it, Frank?" asked Harry, admiringly.

"Well, the commander said we were destined for a lonely island in the
North Sea that was heavily guarded. I guess Helgoland fits that
description right enough. Besides, as I remember the geography of these
parts, that's about the first land we'd strike going on this course."

"But I understand that is a sort of naval base," put in Harry. "Isn't
that the island where the Germans are fitting out so many of their
Zeppelins? Seems to me I read something about that in a paper."

"That's the very place!" put in Ned. "The paper said it was a lonely,
rocky island, difficult of approach and quite well fortified."

"And book agents, canvassers, peddlers and rag men are not allowed there
at all!" asserted Jimmie, gravely.

"Take his pie away!" shouted Jack. "He's raving again!"

"And you have to deliver all goods in the rear," added Jimmie, as Jack
reached for the plate containing the lad's breakfast.

"Hurry up, let's finish this food and get out on deck, where we will be
able to see something," suggested Harry. "This is interesting!"

Directly the boys were standing in the lee of a deck house eagerly
scanning the horizon for some sign of the island where they expected to
be landed as prisoners of war.

The gale gave no hint of abating. Indeed, the motion of the waves was
much more noticeable. Jack attributed this partly to the build of the
craft, whose lines were sharper than those of the Lena Knobloch. The
sharp prow cut the water like a knife, while the slender, tapering stern
slipped through the seas without making a roller of large proportions.

Presently, just as Jack declared he could see a blue smudge in the
distance, in