The Lieutenant was right, up to a certain point. Had he known exactly the nature of the vessel's cargo, he might have evinced far greater interest in her; for, stowed away in the dark and ill-ventilated fore-hold, was the spy Hymettus.

On his escape from prison—a feat rendered comparatively easy by the connivance of the authorities—he decided that the wireless business was far too risky—at least for the present. He had also developed a sense of distrust against his supposed Arab accomplice, notwithstanding the active aid given him by the latter in shaking off the bonds of captivity. He had, therefore, succeeded in giving Major Ferriter the slip, and, by his intimate knowledge of the native quarter of Alexandria, had been able to secrete himself until arrangements were made for him to stow himself away on board the Greek tramp.

The Sinai's run from Alexandria to Valetta was brief and uneventful. There was not even a false alarm of the appearance of a U-boat's periscopes. For the present, at least, German submarines had been effectually "warned off" the Egyptian coast; yet, as there was likely to be a fresh outburst on the part of these modern pirates, the authorities were strenuous in their efforts to anticipate the next display of maritime frightfulness.

"By Jove, what luck!" ejaculated Osborne soon after the Sinai had moored to a buoy in the Grand Harbour. "I've got a command, Webb, my boy. They've given me 0916."

"Good luck, old man!" replied Webb heartily; then with a tinge of regret: "I suppose it means that we won't see much of each other in future."

"Wrong again, my festive," said Osborne. "You've been appointed to the same packet."

"That's good," declared the Sub. "Any idea what she's like?"

"Yes; a Yankee-built, sixty-footer motor-patrol boat. You know the type well enough: V-sectioned with flush deck, and a small chart-house and steering platform for'ard. She's a flier, from all accounts. Goes twenty-six knots with her three eight-cylindered 160-horse-power motors. She carries two officers and a crew of six."

"Sounds promising," remarked Webb. "Wonder where our cruising ground will be?"

"In and around the Archipelago," replied the Lieutenant. "Part of our duties is, I believe, to dance attendance upon the sea-plane carrier, Fleetwing. She's a stranger to me, but I dare say we'll both make her acquaintance before very long. Well, buck up, and get ashore. Here's a tender coming alongside. We've quite enough to do before Monday."