Drawing, Technical

Propeller Wheels for Light House Tender, Sumac

One plan sheet entitled, "Propeller Wheels for Light House Tender, Sumac." The drawing consists of black ink on linen and shows plan, profile, and cross-section views of the 7.5-foot diameter, 4-blade propeller. Tables beneath the drawings give design details and specifications. The title block in the lower right corner shows that the drawing was prepared by "Manitowoc Ship Building Co." at a scale of 1 1/2 inch = 1 foot and is dated October 16, 1920. The drawing number is shown as "7143."