HMS Raisonnable had been commissioned during a period of tension with Spain, but when this passed, Suckling was transferred to the Nore guardship HMS Triumph and Nelson was dispatched to serve aboard the West Indiamen Mary Ann of the merchant shipping firm of Hibbert, Purrier and Horton, in order to gain experience at sea; he sailed from Medway, Kent, on 25 July 1771 sailing to Jamaica and Tobago, returning to Plymouth on 7 July 1772. He twice crossed the Atlantic, before returning to serve under his uncle as the commander of Suckling's longboat, which carried men and dispatches to and from the shore. Nelson then learned of a planned expedition under the command of Constantine Phipps, intended to survey a passage in the Arctic by which it was hoped that India could be reached: the fabled North West Passage. At his nephew's request, Suckling arranged for Nelson to join the expedition as coxswain to Commander Lutwidge aboard the converted bomb vessel HMS Carcass. The expedition reached within ten degrees of the North Pole, but, unable to find a way through the dense ice floes, was forced to turn back. By 1800 Lutwidge began to circulate a story that while the ship had been trapped in the ice, Nelson had seen and pursued a polar bear, before being ordered to return to the ship. Lutwidge's later version, in 1809, reported that Nelson and a companion had given chase to the bear, but on being questioned why, replied that "I wished, Sir, to get the skin for my father."