"Then we strike across that inlet soon?" suggested George, showing just the slightest sign of nervousness, Jack thought.

Of the three skippers, George had the most cause for looking serious whenever there arose any chance for trouble, either through a storm, or tidal currents. His speed boat, being so very narrow in beam, and cranky, was least fitted to contend with raging seas; since there must always be great danger of an upset.

"In less than half an hour we'll spin across and get behind Wallop's Island. As the tide is pretty well up, we ought to make the riffle there. I'd hate to get stuck in the mud, and have to wait ten or twelve hours for another tide to float us off," Jack made answer; for, as he had the charts, they always looked to him for information.

"Then what next?" asked Herb, wishing to be posted.

"In an hour or more we ought to reach Assawaman Inlet, and after that will come Gargathy, Matomkin, and then Watchapreague; which last is said to be the most dangerous along the whole coast," replied the commodore of the fleet.

"You don't say!" ejaculated George, pretending to look unconcerned; "and just why is that, please?"

"Well, it happens to be wider than any other, and the currents are fierce. Besides, some of the natives declare there are mermaids, or something after that order, that try to overturn boats crossing."

At that the boys let out a combined yell.

"Me for a pretty mermaid, then!" cried Nick. "I always did want to have a chat with one of those fair damsels of the sea, ever since I read how they used to comb their hair and sing to the mariners in those old days of Greece."

"Makes a fellow think of all the old mythological things," declared George.