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- Description:
- One blueprint drawing entitled "Plans for Engineer Dock at Fort Wayne." The drawing shows the layout of the dock area along with dimensions and water depths. The locations of four survey vessels are also indicated along with their names: Lorain L., U.S.S. Gen. Williams, U.S.S. Search, and U.S. Lake Survey No. 1. On the right side of the plan sheet, a cross-section detail of the dock sheet piling and anchorage configuration is shown. The title block in the upper left corner indicates that the drawing was prepared "under the direction of Major W. L. Fisk, Corps of Engineers, and E. E. Haskell, Chief Asst. Engineer" at a scale of 1 inch = 20 feet. The plan is dated August, 1902.
- Date Issued:
- 1902-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One blueprint drawing entitled "Steel Hull Screw Tug, Engineer, N.Y., for New York Harbor, N.Y., Midship Section." The drawing (Sheet 3-1) shows a cross-section view of the hull and deck of the proposed propeller-drive tugboat. The title block in the lower right corner shows that the drawing was "designed in the Office of the Chief of Engineers, U.S.A., Washington, D.C." The drawing was done at a scale 1 inch = 1 foot and is dated August, 1910.
- Date Issued:
- 1910-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One blueprint drawing entitled "U. S. Lake Survey, Detail of Intermediate Sweep Float." The drawing shows the design of a float (buoy) that was used as part of a sweep for obtaining water depth information. The sweep consisted of a line of 15 floats with flags, spaced at 100-foot intervals, that supported an underwater wire at a set depth. The line of buoys would then be dragged across an area of water by launches at each end of the buoy line. If the wire encountered any submerged obstructions, it would cause one or more float (buoy) flags to tip and thereby give an approximate location of an obstruction that could be investigated further. Such obstructions could then be plotted on the navigational charts that were produced by the Lake Survey Office. The plan is dated January, 1915.
- Date Issued:
- 1915-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One blueprint drawing entitled "Steam Survey Boat, Gen. C. B. Sears." The drawing shows a starboard side exterior profile view of the proposed boat as well as three plan views of the decks and one cross-section view of the hull and decks. Design notes and specifications are shown along the right side of the drawing. The title block in the lower right corner shows that the drawing was "Prepared in the Office of the Chief of Engineers, U. S. Army, Washington, D.C." The drawing was done at scales 1/8 inch and 1/2 inch = 1 foot and is dated 1914.
- Date Issued:
- 1914-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
