He hardly breathed as the vessel glided down upon these two black sentinels, and, for an instant, he fancied the wind or the current had interfered with their positions. It was now too late, however, to attempt any change, and Mark saw the ship surging onward on the swells of the ocean, which made their way thus far within the reefs, with a greater intensity of anxiety than he had ever before experienced in his life. Away went the ship, and each time she settled in the water, our young man expected to hear her keel grating on the bottom, but it did not touch. Presently the buoys were on her quarters, and then Mark knew that the danger of this one spot was passed!

The next step was to find the southern end of the outer ledge that formed the succeeding passage. This was not done until the ship was close aboard of it. A change had come over the spot within the last few hours, in consequence of the increase of wind, the water breaking all along the ledge, instead of on its end only; but Mark cared not for this, once certain he had found that end. He was now half-way between his former anchorage and the crater, and he could distinguish the latter quite plainly. But sail was necessary to carry the ship safely through the channel ahead, and Mark called to Bob to lash the helm a-midships after luffing up to his course, and to spring to the main-topmast staysail halliards, and help him hoist the sail. This was soon done, and the new sail was got up, and the sheet hauled aft. Next followed the mizen staysail, which was spread in the same manner. Bob then flew to the wheel, and Mark to his knight-heads again. Contrary to Mark's apprehensions, he saw that the ship was luffing up close to the weather ledge, leaving little danger of her going on to it. As soon as met by the helm, however, she fell off, and Mark no longer had any doubt of weathering the northern end of the inner ledge of this passage. The wind coming in fresher puffs, this was soon done, when the ship was kept dead away for the crater. There was the northern end of the reef, which formed the inner basin of all, to double, when that which remained to do was merely to range far enough within the reef to get a cover, and to drop the anchor. In order to do this with success, Mark now commenced hauling down the jib. By the time he had that sail well in, the ship was off the end of the sunken reef, when Bob put his helm a-starboard and rounded it. Down came the main-topmast staysail, and Mark jumped on the forecastle, while he called out to Bob to lash the helm a-lee. In an instant Bob was at the young man's side, and both waited for the ship to luff into the wind, and to forge as near as possible to the reef. This was successfully done also, and Mark let go the stopper within twenty feet of the wall of the sunken reef, just as the ship began to drive astern. The canvas was rolled up and secured, the cable payed out, until the ship lay just mid-channel between the island and the sea-wall without, and the whole secured. Then Bob took off his tarpaulin and gave three cheers, while Mark walked aft, silently returning thanks to God for the complete success of this important movement.

Important most truly was this change. Not only was the ship anchored, with her heaviest anchor down, and her best cable out, in good holding ground, and in a basin where very little swell ever penetrated, and that entering laterally and diminished in force; but there she was within a hundred and fifty feet of the island, at all times accessible by means of the dingui, a boat that it would not do to trust in the water at all outside when it blew in the least fresh. In short, it was scarcely possible to have a vessel in a safer berth, so long as her spars and hull were exposed to the gales of the ocean, or one that was more convenient to those who used the island. By getting down her spars and other hamper, the power of the winds would be much lessened, though Mark felt little apprehension of the winds at that season of the year, so long as the sea could not make a long rake against the vessel. He believed the ship safe for the present, and felt the hope of still finding a passage, through the reef to leeward, reviving in his breast.

Well might Mark and Bob rejoice in the great feat they had just performed. That night it blew so heavily as to leave little doubt that the ship never could have been kept at her anchor, outside; and had she struck adrift in the darkness nothing could have saved them from almost immediate destruction. The rollers came down in tremendous billows, breaking and roaring on all sides of the island, rendering the sea white with their foam, even at midnight; but, on reaching the massive, natural wall that protected the Rancocus, they dashed themselves into spray against it, wetting the vessel from her truck down, but doing her no injury. Mark remained on deck until past twelve o'clock, when finding that the gale was already breaking, he turned in and slept soundly until morning. As for Bob, he had taken his watch below early in the evening, and there he remained undisturbed until the appearance of day, when he turned out of his own accord.

Mark took another look at the sea, reefs and islands, from the main-topmast cross-trees of the ship, as she lay in her new berth.