Punctually at the appointed time, Peter Craddock and George Carline went on board the Thetis, where they introduced themselves to the owner.

Mr. Clifton was a thin, wiry man of about thirty. He was not tall—Peter could give him a couple of inches—but he was full of energy and as active as a kitten. He was deeply sunburnt, while his bony hands were as hard as iron—characteristics of a yachtsman who gets the very best out of the pastime by taking an active part in the management of his own craft.

"I'll like that chap," thought Peter as the owner and skipper of the Thetis shook hands.

"These are the fellows I want," decided Mr. Clifton, as he gave a swift, comprehensive glance at the two alert, well-set up Sea Scouts. "If appearances go for anything they know their job. Thank goodness they're wearing rubber shoes and not hob-nailed boots."

Viewed from the quayside the Thetis looked very little larger than the Puffin. She was ketch-rigged, with roller headsails. All her canvas was tanned, thus doing away with the necessity of sail-covers. What little brasswork she had shone like gold, but as far as possible all the metal work was galvanized iron, Her cockpit was small, but owing to her beam and the narrowness of her raised cabin-top, there was plenty of deck space. She was whaler-sterned—a great advantage in a heavy following sea. On the port side was a pair of davits from which hung a dinghy fitted with an outboard motor. Every rope was neatly coiled, the decks were spotlessly clean, while the white enamel on her sides glistened in the sunlight.

"Come on board," said Mr. Clifton, "and see what you think of my little ship."

The Sea Scouts descended the ladder from the quay, for the tide was almost at the last of the ebb, and gained the deck. Down below the accommodation was much larger than on board the Puffin. There was a spacious saloon, with a motor neatly stowed away under the companion-ladder. Beyond that were two small sleeping cabins separated by an alley-way so narrow that a bulky man would have to turn sideways to make his way along. Next to the cabins was a galley, while right for'ard was a roomy fo'c'sle with a couple of folding cots, above wide locker seats.

Lying at full length on one of the seats was a massive sheepdog, who, finding the visitors were accompanied by his master, lazily wagged his stumpy tail.

"Let me introduce you to Rex," said Mr. Clifton. "Rex, old boy, these aren't ordinary visitors, so don't look as if you were bored stiff. 'Shun, salute!"

With an agility that seemed remarkable from such a shaggy, ponderous animal, the sheepdog sat up and brought his left paw up.