The constituted authorities drew up a plan which Franklin was to follow, but he was left free to act as he thought proper when circumstances demanded alterations. The main thing was to sail north of America from the Atlantic side and come out into the Pacific Ocean through Behring Strait.

The Erebus and Terror left England on May 19, 1845. All officers and men were full of the most lively expectations of success, and were resolved to do all in their power to achieve the object of the expedition. They passed the Orkney Islands and on Midsummer Day saw the southern extremity of Greenland, Cape Farewell, disappear to windward. Next day they encountered the first ice, huge floating icebergs of wild, jagged form or washed into rounded lumps by the action of the waves, and ten days later the ships anchored near Disko Island, on the west coast of Greenland. Here they met another vessel which had come up north with an additional store of provisions and equipment. Its captain, the last man who spoke with Franklin and the members of the expedition, said that he had never seen a finer set of men so well prepared and so eager for their work. He thought that they could go anywhere.

On July 26 the Erebus and Terror were seen, for the last time, by an English whaler. After that day the fate of the most unfortunate of all Polar expeditions was involved in an obscurity much denser than that which surrounded Gordon in Khartum after the telegraph line was cut. What is known only came to light many years later through the relief expeditions that were sent out, or was communicated by parties of wandering Eskimos.

Meanwhile the voyage was continued north-westwards between two large islands into Lancaster Sound. Soon progress was delayed by masses of pack ice, and the engines were found to be so weak that they could be used only in smooth, open water. In another sound, to the north, the water was open, and here the ships managed to sail 150 miles before the ice set fast again. Then they passed through another open sound back to the south. Early autumn had now come, and all the hills and mountains were covered with snow and fresh ice was forming in the sound. Here Franklin laid the Erebus and Terror up for the winter, having found fairly sheltered anchorage at a small island.

What kind of life the men led on board during the long winter we do not know. We can only conjecture that the officers read and studied, and that the men were employed in throwing up banks of snow reaching up above the bulwarks to keep in the warmth; that snow huts were built on the ice and on land for scientific observations; and that a hole was kept open day and night that water might always be procurable in case of fire when the pumps were frozen into pillars of ice. When the long night was over and February came with a faint illumination to the south, and when the sky grew brighter day by day till at last the expedition welcomed the return of the sun, probably men and officers made excursions to the neighbouring islands to hunt. Their hopes revived with the increasing light. Only 260 miles of unknown coast remained of the north-west passage, and they believed that the New Year would see them return home. The sun remained longer and longer above the horizon, and at last the long Polar day commenced.

When the Erebus and Terror were released in late summer from their prison of ice, and the small island could at last be left, three sailors remained on the beach. Their gravestones, carved with a few simple words, were found five years later by a relief expedition, and they constitute the only proof that Franklin wintered at this particular spot.

To the south lay an open channel, and this southern passage must in time bend to the west. Mile after mile the vessels sailed southwards, carefully avoiding the drifting ice. East and west were seen the coasts of islands, and in front, in the distance, could be descried King William Land, a large island which is the nearest neighbour to the mainland. The north-west passage was nearly accomplished, for it was now only about 120 miles westward to coasts already known. How hopelessly long this distance seemed, however, when the vessels were caught in the grip of the ice only a day or two later! Firmer and firmer the ice froze and heaped itself up round the Erebus and Terror; the days became shorter, the second winter drew on with rapid strides, and preparations to meet it were made as in the preceding year. The vessels lay frozen in on the seventieth parallel, or a little south of the northernmost promontory of Scandinavia; but here there was no Gulf Stream to keep the sea open with its warm water. Little did the officers and crew suspect that the waves would never again splash round the hulls of the Erebus and Terror.

We can well believe that they were not so cheerful this winter as in the former. The vessels were badly placed in the ice, in an open roadstead without the shelter of a coast. They lay as in a vice, and the hulls creaked and groaned under the constant pressure. Life on board such an imprisoned vessel must be full of unrest. The vessel seems to moan and complain, and pray that it may escape to the waves again. The men must wonder how long it will hold out, and must be always prepared for a deafening crash when the planks will give way and the ship, crushed like a nutshell, will sink at once. But worst of all is the darkness when the sun sets for the last time.

However, the winter passed at last, and the sun came back. It grew gradually light in the passages below deck, and it was no longer necessary to light a candle to read by in the evening. Soon there was no night at all, but the sun shone the whole twenty-four hours, and all the brighter because the vessels were surrounded by nothing but ice and snow. Far to the south and east were seen the hills on King William Land. If only the ice would release its hold and begin to drift! But the pack-ice still remained to the westward, and it was possible of course that the vessels had been damaged by the pressure.

Two officers with six men undertook a journey to the south coast of King William Land, whence the mainland of North America could be descried in clear weather. At their turning-point they deposited in a cairn a narrative of the most important events that had happened on board up to date. This small document was found many years after. The little party returned with good news and bright hopes, but found sorrow on the ships. Admiral Franklin lay on his deathbed. The suspense had lasted too long for him. He just heard that the north-west passage had been practically discovered, and died a few days later, in June, 1847. This was fortunate for him. His life had been a career of manliness and courage, and he might well go to sleep with a smile of victory on his lips. But we can imagine the gloom cast upon the expedition by the death of its leader.