The idea originated from the old wooden dead eyes used on square rigged sailboat. We thought, if the part works when they use only rope rigging, the same kind of part should works on the new high tech synthetic line. So, we scaled down and adapted the “historic” dead eyes to modern line diameters. We tried to make the smallest and lightest part possible. There were two dimensional constraints: the minimum radius around the part and the minimum radius for the lashing. For the ease of adjusting the lashing, we needed to have several returns. Our design considerations resulted in a version with 4 holes staged in 2 inches wide dead eye (for more holes was not enough material left).

At this stage of the design, we prepared a basic static analysis. It could be shown that the part with highest load was the one at the chain plate and on the mast tang. The middle deadeyes are far less stressed. Finally we optimized the details by finite element analysis and validated the results by destructive experimental investigations using a testing machine.