But Jay was insistent.

"Please, Captain Austin, I'm sure I can get away with this and rescue those plans belonging to the government——"

Captain Austin, looking over Jay's shoulder, saw some one approaching and bade the young diver speak softly of the stolen plans.

The intruder was Weddigen! Jay eyed him keenly, trying to fathom whether the burly diver had overhead the remark. A cynical smile played at the corners of Carl's mouth and he smirked at Jay in a leering way.

"Well, all right, Thacker, I suppose you will have your own way," decided the ship's captain. "Go ahead, I'll wait the afternoon out for you; but, remember, we weigh anchor for home to-night."

Jay climbed on deck and prepared again to don his armor.

"Bring me a crowbar and that old mushroom anchor that lies up front in the forward compartment," he asked of one of the deckmen.

Dick was assisting his chum to get into his diving suit.

"What are you going to do this time?" asked Dick inquisitively.

"Well, I've got an idea and I want to see how it works out," replied Jay. "That freak undertow is doing some funny stunts and I think I can use it to suit my purposes. I'll let you know after I've had another look at that periscope pole."