Hull Laser Scanning

One Design Technical Committee

One Design Technical Committee

Status

• Plug Scanned and Compared to the Class Drawings. Data presented at the 2007 IGC

• Ontario Yachts Hull Scanned and Compared to Plug. Data presented at the 2007 IGC

• Bashford / Smidmore Hull Scanned and Compared to the Plug. Data presented at the 2008 IGC

• Peticrows / Heritage Hull to be Scanned July 2008

One Design Technical Committee

Speed of Progress has been Based on Boat Availability

Bashford / Smidmore Error (in) vs. Plug

One Design Technical Committee

Ontario Error (in) vs. Plug

One Design Technical Committee

One Design Technical Committee

Observations

• Deviations Observed are Likely Partially Due to The Class Allowing Continued Fairing of the Plug Prior to Each Mold Being Made.

• Deviations Observed are Likely Within the Technology Used to Reproduce Hulls and Plugs.

• Not All Etchells are the Same. • Many Details Differ Between the Molds

One Design Technical Committee

One Design Technical Committee

Needed Future Actions

• Based on the Three Hull Scans and The Plug Scan The IGC Will Need to Determine What a Etchells Is?

• New Hull Drawings / Solids Will Have to be Generated

• Methods for Producing New Molds Will Have to be Standardized

• Plug Needs to Be Much Better Maintained

One Design Technical Committee