James Clark Ross | Explorer of the Poles and the Magnetic North

Arctic Explorations

Northwest Passage

Ross began his career exploring the Arctic under the command of his uncle, Sir John Ross. Their first major journey together was the 1818 expedition to find the Northwest Passage, a treacherous and elusive sea route within the archipelago of islands in the high Canadian Arctic. Although they did not succeed in finding the Northwest Passage, this mission laid the foundation for future explorations.

Ross continued Arctic exploration alongside Sir William Edward Parry, taking part in multiple voyages aboard Hecla and Fury  between 1819 and 1827. During these expeditions, Ross demonstrated exceptional navigational skills and became known for his keen ability to conduct scientific observations in extreme environments. 

In 1829, James Clark Ross embarked on an Arctic expedition aboard the Victory, again under the leadership of his uncle, Sir John Ross. During this voyage, Ross pinpointed the Magnetic North Pole on the Boothia Peninsula in present-day Canada. They determined this by using a dip circle, a scientific instrument that measures the angle at which a compass needle is pulled downward by the Earth's magnetic field. When the needle stood perfectly vertical, they knew they had found the pole.

This discovery had enormous implications for navigation and scientific research, as it provided a crucial reference point for understanding Earth's geomagnetic properties—something that remains important for global navigation systems today. This achievement cemented  Ross's reputation as a pioneering figure in the Arctic exploration and laid the groundwork for future studies in Earth’ magnetism.

Antarctic Expedition (1839-1843)

Ross’s iconic Antarctic expedition aboard HMS Erebus and HMS Terror 

After cementing his reputation in the Arctic, Ross was chosen to lead the British Antarctic Expedition of 1839–1843. Commanding HMS Erebus and HMS Terror, Ross and his crew set sail to  expand scientific knowledge of Antarctica, particularly in the field of magnetism.

Navigating through treacherous ice fields, Ross's expedition became the first to break through  the Antarctic pack ice and reach open waters. His voyage marked one of the earliest and most significant explorations of Antarctica, revealing its mysteries to the world. In January 1841, he discovered the Ross Sea, a deep bay of the Southern Ocean that remains a key area for scientific research today. He also identified and named the Ross Ice Shelf, the largest ice shelf in Antarctica, which extends over 500,000 square kilometres.

Ross’s major discoveries and mapping achievements

Ross's Antarctic expedition made several groundbreaking discoveries, including:

• Ross Sea – A major embayment of the Southern Ocean, named in his honour.

• Ross Ice Shelf – The largest ice shelf in Antarctica, which still bears his name.

• Ross Island – Home to Mount Erebus and Mount Terror, two volcanic peaks named after his ships.

Ross’s expeditions were not merely about geographical discovery; they were also driven by scientific inquiry. His team conducted extensive studies on Earth's magnetism, ocean currents, and the behaviour of sea ice. These observations laid the groundwork for future scientific research in the polar regions, contributing significantly to our understanding of Antarctica's unique environment.

Ross’s magnetic surveys in Antarctica provided critical data that helped scientists refine their understanding of the Earth’s magnetic field. His recordings were used to adjust navigational charts and influenced the development of geomagnetic models. 

His meticulous documentation of Antarctic wildlife, including penguins and seals, offered early insights into the continent's ecosystem, paving the way for modern conservation efforts.

However, the thick pack ice prevented him from reaching the continent itself. His expedition was groundbreaking in mapping Antarctica's coastline and conducting scientific studies, but physical landings on the continent would come later with explorers like Carsten Borchgrevink and Robert Falcon Scott.

Why choose our Antarctic cruises?

Our Antarctic Expedition Micro Cruises are designed to offer an unparalleled experience, with small groups that permit a deeper sense of immersion into the wild. We combine adventure with education enhanced by a safari-like sense of awe—intimate, small-group encounters with wildlife and wilderness that bring you closer to Antarctica than you ever imagined. 

Led by expert guides, you'll have the chance to explore the pristine beauty of Antarctica while learning about its rich history and ecological significance. From observing majestic icebergs to encountering penguin colonies, each moment is an opportunity to connect with the natural world. Like James Ross, you’ll see it all for yourself with fresh eyes and experience the first-time checklist that only an expedition to Antarctica can promise and deliver.

Book your Antarctic Expedition Micro Cruise adventure today

Ready to embark on a journey of discovery? Book your trip on one of our Expedition Micro Cruises or join our Antarctic expeditions for an unforgettable adventure. Experience the thrill of exploration and witness the wonders of Antarctica, just as James Clark Ross did over a century ago.