arine surveys are essential for navigation. Britain
Transcription
arine surveys are essential for navigation. Britain
A portion of George Vancouver's 1792 chart of the north west coast. A portion of Francisco Eliza's chart of the Strait of Georgia, 1791. arine surveys are essential for navigation. Britain established a Hydrographic Office in 1795, the United States in 1807. Hydrography became a naval profession, and charts were made public to facilitate international trade. Although the instruments were rudimentary, a chronometer, sextant or theodolite for position and a sounding pole and lead line for depth, charts of remarkable accuracy were produced. Portrait of Captain George Vancouver RN (1757-1798). Lt. Charles Wilkes, USN (1798-1877) Between 1838 and 1842 Wilkes led a major scientific expedition around the world. His hydrographic surveys of the Oregon coast were particularly fine. Retired a Rear-Admiral. A harsh disciplinarian, he was the model for Captain Ahab in Moby Dick. Officers of HMS Plumper c.1860 (standing, l. to r.) Surgeon David Lyell, Paymaster William HJ Brown, Captain George H. Richards, Second Master Daniel Pender. (sitting) Second Master EP Bedwell, Lieutenant. Richard C Mayne, Mrs Richards, Lieutenant William Moriarty. In 1791 the Spanish explorer, Francisco Eliza, made the first survey of the Strait of Georgia, and named the San Juan Islands; in 1792, in cooperation with Galiano and Valdes, George Vancouver made surveys of the coast of North America, including Haro Strait; in 1840 the American Charles Wilkes led a major naval expedition which included detailed mapping of the west coast. However, after 1846, when the boundary was set at the 49th parallel, there was a frenzy of mapping in Haro Strait to determine the boundary through the San Juan Islands. The Royal Navy was represented by Captain Henry Kellett in HMS Herald, Lieutenant James Wood in HMS Pandora, Commander James Prevost in the sloop HMS Virago and particularly Captain George Richards in HMS Plumper and HMS Hecate. The United States Coast Survey was led by Captain James Alden in the US Survey Ship Active. Eventually the dispute was settled in favour of the United States. MMBC-P553 HMS Plumper A sloop with screw propulsion and eight guns, she was designed for survey work. Note the small rowboats with crews taking depths and the survey marker on the shore. Captain James Alden, US Navy (1810-1877). Having served as a Midshipman on the Wilkes Expedition, Alden knew the Pacific Northwest. Together with George Richards RN he was a appointed a member of the Boundary Commission to survey the San Juan Islands. Following duty in the Civil War he retired a Rear-Admiral. Today, from a regional office at the Institute of Ocean Sciences near Sidney, the Canadian Hydrographic Service continues mapping the Pacific coast. Global Positioning System technology and instruments including Multibeam Echo Sounders result in better charts, safer waterways and the protection of the environment. HMS Hecate A second class sloop with auxiliary sidewheels and four guns, she succeeded HMS Plumper to continue hydrographic surveys under the command of Captain George Richards RN from 1860-1863. The illustration shows her aground at Neah Bay east of Cape Flattery from August 15-21, 1861. MMBC-P1029 HMS Plumper was stationed in Esquimalt Harbour from 1856 to 1861 under the command of Captain George H. Richards RN. Rear-Admiral George H. Richards, CB, FRS. After many years of hydrographic survey work around the world, he was appointed Hydrographer of the Navy, 1863-1874. MMBC-P3314 Richard's chart of the San Juan Islands, 1859, showing the three possible boundaries. William J Stewart, (1863-1925) First Canadian Chief Hydrographer 1904-1925. In 1883 the Canadian Government founded the Georgian Bay Survey. By 1905 the Canadian Hydrographic Service was responsible for all marine surveys in and around Canada. CSS William J Stewart Built in Collingwood, Ontario, in 1932 as a specialist surveying vessel. Employed on the West Coast, she is representative of the vessels of the CHS. Presently she is preserved as a hotel and tourist attraction in Ucluelet, BC. MMBC Visit the Museum and Archives at the corner of Beacon Avenue and Fourth Street. MMBC courtesy of the Maritime Museum of British Columbia, Victoria BC. RBCM-ABC courtesy of Royal British Columbia Museum - Archives of BC. We gratefully acknowledge the financial support of the Province of British Columbia through BC150, a Ministry of Tourism, Culture and the Arts initiative and the Hertitage Legacy Fund of British Columbia.