The pirates were still deep in their game. Deftly Alwyn placed a pair of stout ash oars by the side of the lifeboat's masts and sails, so that they would be invisible from the floor; then selecting another couple and four pairs of rowlocks he returned to the boat.

It took the united efforts of four men to run her down the beach into the water, but, Burgoyne reflected, two might perform the operation if there were rollers to assist in the launching. Then, again, there was the weight of the Chinaman, who had already clambered in and was sitting aft and holding the tiller.

Thigh-deep in water, the Donibristle's men waded before they scrambled on board. The oars were shipped, and with long easy strokes the boat headed towards the entrance of the harbour.

Passing within a couple of boats' lengths of their former ship, the men gave curious glances at the old Donibristle, on board of which Branscombe's party were unloading No. 1 hold. Standing at the head of the accommodation ladder was Black Strogoff.

"No tricks, you fellows!" he shouted. "You'll be under observation all the time." Then he added something in Chinese, and the Oriental seated aft solemnly held up an automatic pistol before returning it to the folds of his loose, blue linen jacket.

The warning was unnecessary. Burgoyne had not the slightest intention of giving his captors the slip. When he did he would take good care that his revolver, which was now hidden under the floor of his hut, would once again be nestling against his ankle.

Again luck was in his favour. The pirate in charge of the boat signed for the men to continue rowing, and steered towards the entrance. They were going to fish in the lagoon it appeared.

Although working an oar, Burgoyne frequently looked ahead over his shoulder. He noted the mass of towering rock that formed the screen to the entrance when viewed from seaward. He wondered which of the two channels was the main approach; the northern one was the broader, but the boat was taking the southern approach, which was barely fifty yards wide between the southern arm of the harbour and the inner side of the barrier island.

A quarter of a mile's steady pull brought the boat clear of the mass of rock on their port hand, and afforded an uninterrupted view seaward. Half a mile away was the coral reef, pierced by a deep channel through which at that moment the Malfilio was returning. She was moving slowly, but before the lifeboat had rounded the south-eastern point of the island the pirate cruiser had turned into the northern approach channel. So far so good; Burgoyne had learnt the secrets of the big-ship channel leading to the pirates' lair.

It was hot work rowing under the blazing sun, but Burgoyne was not in the least keen to stop. It was an unknown water. He was now for the first time making the acquaintance of the southern side of the island, and if the boat carried on long enough they would soon open up the western side, which Alwyn had already studied from the cliffs of the compound.