Then in 1845, when he was in his sixtieth year, he went out in the service of the Admiralty to attempt the passage through the Arctic Ocean. Leaving England in May, 1845, in command of the _Erebus_ and _Terror_, with a body of the most staunch and experienced seamen, he sailed into the Arctic Seas. They were last seen by a whaler on the 26th of July that year, and then for years no word of their fate reached Great Britain.