The expedition being determined on, two vessels, the Hecla, of three hundred and seventy-five tons, carrying fifty-eight men, and the Griper, a gun brig of one hundred and eighty tons, with thirty-six persons on board, were forthwith got ready for sea. Both vessels were strengthened as much as possible, and stored with provisions for two years, including an ample supply of anti-scorbutics, and everything which could be thought of to enable the crews to endure the extreme rigours of a polar winter. Captain Sabine accompanied Lieutenant Parry as astronomer, and Mr Beechy as lieutenant. Among the midshipmen were Joseph Nias and James Clark Ross, who became eminent arctic explorers. The Griper was commanded by Lieutenant Siddon, and his first lieutenant was Mr Hoppner.

The two vessels sailed from the Nore on the 11th of May, 1819, and having rounded the Orkneys, stood across the Atlantic. Having contrary winds, they made but slow progress. On the 18th of June they first fell in with icebergs, flying amid which were numberless petrels, kittiwakes, tarns, and other winged inhabitants of the northern regions. Some of these bergs, of which fifty were seen at a time, were of great size. The heavy southern swell dashed the loose ice with tremendous force against them, sometimes raising a cloud of white spray, which broke over their tops to the height of more than a hundred feet, accompanied by a loud noise, resembling distant thunder. As the Hecla was drifting on with a southerly current, she was nearly nipped by a detached floe, which drove her against a berg aground, one hundred and forty feet high, where the depth of water was one hundred and twenty fathoms, so that its whole height must have exceeded eight hundred feet.

Parry at first attempted to force his way north and west, amid the masses of ice, in the direction of Lancaster Sound; but as the vessels were sailing on, the floes suddenly closed round them, and on the 25th both were so completely beset that it was impossible to turn their heads in any direction. Here they were fixed, though in no danger, until the morning of the second day, when the violence of the sea loosening the ice, it was driven against the ships’ sides with such force that, had they not been strongly built, they would probably have been destroyed. At this time, from the crow’s nest, upwards of eighty-eight enormous icebergs were seen, besides many smaller ones. The vessels being at length freed, Lieutenant Parry came to the resolution of abandoning the attempt to reach Lancaster Sound by a direct course, and instead steered northward along the border of the great ice-field, in the hopes of finding open water farther to the north. He steered on that course until he reached latitude 73 degrees, when he resolved upon making a determined push to the westward.

A favourable breeze springing up, the ships stood on among the detached floes, through which they were warped by securing ice-anchors with hawsers to the more solid pieces ahead. Before they had made much progress, a thick fog came on, which prevented the open lanes ahead being seen. Still they continued to make way, sometimes dangerously beset by masses of ice; yet by persevering efforts, they first got into one lane, then into another, till, the fog clearing, they saw only one long floe separating them from the open sea. The ice-saws were therefore set to work, and with great labour cutting through the floe, they had the satisfaction of seeing the shore clear of ice extending out before them. They now steered for Lancaster Sound, and on the 30th of July they gained its entrance. As they sailed on, under a press of canvas, westward, the mast-heads were crowded by officers and men, eagerly looking out to ascertain if the supposed mountain barrier lay across their course.

The sound continued open, and it was calculated that the two shores were still thirteen leagues apart, without the slightest appearance of land to the westward.

Again and again a report was received from aloft that all was clear ahead, and the explorers began to flatter themselves that they had fairly entered the polar sea. Several headlands were passed, and wide openings to the north and south. With a strong breeze from the eastward, running on until midnight, they found themselves in latitude 83 degrees 12 minutes, nearly one hundred and fifty miles from the entrance of the sound, which was fully fifty miles in breadth. The Griper, which had fallen astern, joining the Hecla, they together reached latitude 86 degrees 30 minutes, when two other inlets were discovered, and named Burnet and Stratton; and then a bold headland, to which the name of Fellfoot was given. A lengthened swell rolling in from the north and west, gave them hopes that they had now really reached the wide expanse of the polar basin, and that nothing would stop their progress to Icy Cape, the western boundary of America.

While their hopes were at the highest land ahead was seen, but it proved only to be a small island. Very soon afterwards more land was seen, with a broad inlet, named Maxwell Bay. Still the sea stretched out uninterruptedly before them, but their hopes fell when, in a short time, they saw to the south a line of continuous ice.

Shortly afterwards an open passage appeared, through which it was hoped the ships would make their way westward. On proceeding on, however, the explorers discovered, to their sorrow, that this ice was joined to a compact and impenetrable body of floes, completely crossing the channel. They had therefore to haul their wind and stand away from it, for fear of being caught in the ice, along the edges of which a violent surf was beating.

As soon as the weather, which had been thick, became clear, an open sea, with a dark water sky, was seen to the south. In the hopes that this might lead to a passage, unencumbered with ice, the commander steered for it, and shortly reached the mouth of a large inlet, ten leagues broad, with no visible termination. The names of Clarence and Seppings were given to the two capes at its entrance.

Avoiding the ice on one side, the ships entered a broad open channel. The coast was dreary in the extreme, while the irregularity of the compass showed that they were approaching the magnetic pole, and increased the difficulties of navigation. They had run one hundred and twenty miles up this inlet, to which the name of Prince Regent was given, when the ice was found extending across it. Standing out of it, Parry steered across the channel, until he came off another broad inlet, leading north, which was called Wellington Inlet.