. Commercial fisheries review. Fisheries; Fish trade. 13 Two C&GS Survey Ships Commissioned Hydrographic survey sister ships of the Coast and Geodetic Survey, "Fairweather" and "Rainier," were commissioned October 2 in Seattle, Wash. The 1,627-ton, 231-ft. vessels, equipped with the latest electronic, depth recording, and positioning equipment, will chart U. S. coastal waters to help provide safe naviga- tion for commercial shipping and recrea- tional boating. They will operate in Alaskan and West Coast waters. Vast Undersea Valley Shown Off Oregon A new map of the ocea
. Commercial fisheries review. Fisheries; Fish trade. 13 Two C&GS Survey Ships Commissioned Hydrographic survey sister ships of the Coast and Geodetic Survey, "Fairweather" and "Rainier," were commissioned October 2 in Seattle, Wash. The 1,627-ton, 231-ft. vessels, equipped with the latest electronic, depth recording, and positioning equipment, will chart U. S. coastal waters to help provide safe naviga- tion for commercial shipping and recrea- tional boating. They will operate in Alaskan and West Coast waters. Vast Undersea Valley Shown Off Oregon A new map of the ocean floor published by the Coast and Geodetic Survey shows a vast undersea valley off the Pacific Coast. The valley extends about 400 miles along Oregon and California. Approximately 35 to 60 miles from the coast, about one to two miles below the sea surface, the valley is 15 to 60 miles wide. About 140 miles of the valley appear on the new bathymetric map. The map covers approximately 13,000 square statute miles of sea bottom. It extends 65 to 95 miles sea- ward off the south Oregon coast, from Cape Ferrelotothe Umpaqua River. Depths range from a few feet off the coast to over 10,500 feet about 40 miles west of Cape Sebastain. Noteworthy Features The other noteworthy features on the new map include part of an extensive ridge west of the valley rising over 3,100 feet from the bottom, and the southern tip of Heceta Bank, 35 miles west of Florence, which rises to within 167 feet of the water's surface. The bathymetric map provides the most detailed bottom topography of the area pub- lished. It is one of a series planned by CGS for the s e a b e d s off the Atlantic, Pacific, Alaskan, and Gulf Area covered by bathymetric map (1308 N -17) of sea bottom off south Oregon, including vast undersea valley. Maps Aid Development The maps are designed to aid Federal, state, and industrial interests explore and develop the potential resources of the conti- nental shelf. It is an area
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Keywords: ., book, bookcentury1900, booksubjectfisheries, booksubjectfishtrade
