HMS Investigator (1848)

HMS Investigator (1848) was a merchant vessel purchased by the Royal Navy and converted for Arctic exploration. It is most famous for its role in the mid-19th century search for the lost expedition of Sir John Franklin, becoming the first ship to navigate and circumnavigate Banks Island while simultaneously transiting the final leg of the Northwest Passage. Commanded by Captain Robert McClure, the ship and its crew were ultimately abandoned in the ice of Mercy Bay, where it lay undiscovered for over 150 years.

Construction and design

The vessel was originally constructed as a merchant barque in 1848 by the Scotts of Greenock shipyard in Scotland. Purchased by the Admiralty in 1849, it was hastily refitted for polar service to join the expanding fleet of ships searching for Franklin's missing expedition. Modifications included substantial internal strengthening with timber and iron braces to withstand ice pressure, along with the installation of a Sylvester's heating apparatus for crew comfort. With a length of 118 feet and a burden of 422 tons, its design was typical of sturdy, deep-waisted merchant ships of the period, chosen for cargo capacity and seaworthiness rather than speed.

Search for Franklin's expedition

In January 1850, under the command of Captain Robert McClure, HMS *Investigator* sailed from England as part of a two-pronged search effort led by Captain Richard Collinson aboard HMS *Enterprise*. The ships became separated after passing through the Strait of Magellan, and McClure proceeded independently. He entered the Arctic Ocean via the Bering Strait and sailed eastward along the northern coast of Alaska. In a bold maneuver, McClure navigated through the Prince of Wales Strait and sighted Banks Island, thereby connecting the Pacific approach with the waterways discovered from the Atlantic by explorers like Sir William Edward Parry. Although the ship became trapped in the pack ice of the Bay of Mercy on northern Banks Island in September 1851, sledge parties discovered a ice-choked channel leading to Melville Island and Viscount Melville Sound, thus proving the existence of a complete, albeit impassable, Northwest Passage.

Fate and wreck discovery

Trapped and unable to free itself, HMS *Investigator* remained ice-bound in Mercy Bay for two winters. Facing severe scurvy and dwindling supplies, McClure and his remaining crew were eventually rescued in the spring of 1853 by a sledge party from HMS *Resolute*, which was part of the search expedition led by Sir Edward Belcher. The crew abandoned the ship on 3 June 1853, leaving it locked in the ice. The wreck site was lost until July 2010, when a team of Parks Canada marine archaeologists, using sonar technology, located its remarkably well-preserved hull sitting upright on the seabed in Mercy Bay. The discovery was made during a larger mission led by the research vessel *Sir Wilfrid Laurier* to also locate Franklin's ships, HMS *Erebus* and HMS *Terror*.

Legacy and significance

The voyage of HMS *Investigator* under Robert McClure is historically credited with the first successful navigation of the Northwest Passage, a feat for which McClure and his crew received a financial reward from the British Parliament. The ship's discovery in 2010 provided an exceptionally intact time capsule of mid-19th century naval exploration, with artifacts like the heating apparatus, ceramic plates, and brass fittings found on the deck. The wreck is now protected as a National Historic Site of Canada and a designated site under the UNESCO World Heritage Site of the Nunavut settlement area. Its story intertwines with the larger narrative of Arctic exploration, the Franklin search, and the enduring human cost of imperial geographical ambition.

Category:Exploration ships of the Royal Navy Category:Ships built on the River Clyde Category:Maritime incidents in 1853 Category:Wreck diving sites in Canada