At 4 a.m. the duty watch was called, and twenty minutes later the _Titania_ passed through the gap in the reef under power alone. Directly she rounded the north-eastern extremity of the reef all plain sail was made and the heavy oil engines shut down. For the present, speed was neither necessary nor desirable. The first streaks of dawn found the yacht ten miles from Nua Leha, doing about five knots before a steady following breeze. A merchantman entering the danger-zone during the height of the unrestricted U-boat campaign could not have kept a sharper look-out than did the crew of the _Titania_ for any sign of the overdue _Cormorant_. It was noon before the peaks of Ni Telang showed above the blue horizon. Only once had the _Titania_ altered her course, and that was to run two miles to the nor'ard to investigate a floating object that turned out to be a large open crate, possibly washed from the deck of a tramp during the hurricane. "We'll pay friend von Giespert a visit," said Harborough. "Probably he'll wonder what we want, probably he won't. Time will prove." The _Titania_ was from two to three miles from the reef when Swaine, who had betaken himself to the cross-trees and was making good use of his powerful binoculars, hailed the deck. "There's the sea-plane, sir," he announced. "Close to the beach, about a hundred yards to the right of that dark bluff." Harborough, closely followed by Villiers and Bobby Beverley, swarmed up the rigging. There was little doubt about it. They could distinguish what looked like the sea-plane, floating head to wind, at about a quarter of a mile from the _Zug's_ berth. Even as they looked a wreath of haze drifted down and hid a considerable portion of the island from view. "Wonder if von Giespert's spotted us?" said Harborough, as the three men regained the deck, leaving Swaine to perform the task of conning the yacht through the passage between the reefs. "They've got the _Cormorant_ right enough, unless our eyesight's very much at fault. Let's only hope that Claverhouse is safe." Villiers went for'ard to see that the anchor was ready for letting go, and the anchor-buoy ready for streaming. He had not been there more than a couple of minutes before Swaine hailed again. "Haze's cleared," he reported; "but I can't see the sea-plane." The anchorage was now clearly visible from the deck, and, as the mast-head man had stated, there was not a sign of the _Cormorant_. "Either she's been spirited away," thought Villiers, "or else we've been victims of an hallucination." It was a tricky passage into the lagoon, for a fairly heavy ground-swell, hardly perceptible off the island, made the _Titania_ evince a tendency to yaw just at the critical moment. Scraping a ledge of coral by a none-too-wide margin, she gained the sheltered lagoon, rounded-to, and dropped anchor.