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The United States Coast Survey Schooner ''Hassler'' was the first iron-hulled steamship used in the service of the U.S. Coast Survey. ==Ship history== Plans for a new ship to chart the waters of U.S. Pacific Coast were drawn up in early 1870 by Carlile Patterson, the Hydrographic Inspector of the U.S. Coast Survey. Patterson called for an iron-hulled ship of about 325 tons, with a draft of no more than and a top speed of . He required that the ship used no more than 2½ tons of coal per day, and could hold two months provisions for a crew of 37. The resulting ship was built in 1871 at the River Iron Works in Camden, New Jersey, under the supervision of John H. Dialogue. She was a three-masted schooner, equipped with a steeple compound engine, and cost $62,000 to build. In 1871-72 the ship sailed on the ''Hassler'' Expedition, under Commander Philip Carrigan Johnson, brother of the artist Eastman Johnson. This was the first important scientific expedition sent by the government for marine exploration. The expedition included Professor Louis Agassiz and his wife Elizabeth Agassiz; Mrs. Johnson; Dr. Franz Steindachner, ichthyologist; Dr. Thomas Hill, botanist; and Count L. F. de Pourtalès, J. A. Allen, and others. The steamer left Boston December 4, 1871, and reached San Francisco in August 1872. On the way to St. Thomas surface observations were made. Deep-sea dredging was done at Barbados and along the Brazilian coast. At the Straits of Magellan frequent stops were made, and at particularly interesting places several days were spent, and inland excursions undertaken, especially to examine glaciers. Throughout the route collections were made, with much of this material deposited in the Museum of Comparative Zoology at Harvard University. Some of the zoological results of the expedition were published by Agassiz, Lyman, and Pourtalès. After nearly 25 years in service, mostly around the Alaskan coast, the ''Hassler'' was finally decommissioned on May 25, 1895. In August 1897 she was sold to the McGuire Brothers for $15,700, and renamed ''Clara Nevada''. She sailed from Seattle on January 26, 1898, with a crew of 40 men, bound for Skagway, Alaska with 165 passengers heading for the Klondike gold fields. Late on February 5, 1898, the ''Clara Nevada'' left Skagway with between 25 and 40 passengers aboard. During the night she struck an uncharted rock several hundred yards north of Eldred Rock and sank immediately. There were no survivors. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hassler (vessel)」の詳細全文を読む スポンサード リンク
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