Contact US Sailing. They probably have data.
David F. Risch, J. D. Gulf Stream Associates, LLC (401) 419-4650 ________________________________ From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of john sandford via CnC-List <cnc-list@cnc-list.com> Sent: Thursday, July 5, 2018 9:10 PM To: cnc-list@cnc-list.com Cc: john sandford Subject: Stus-List Landfall 38 - OSR compliance ? I am researching the ability of my LF 38, to comply with the World Sailing Offshore Special Regulations Cat 1, and would appreciate any feedback. Most of it looks straight forward, and first checks show the boat complies, and may even have been built with some of these in mind. Cockpit volume, Hatches, etc. However, I got stumped in the section with; stability calculations, ORC rating, etc. It would be easier if someone has prior history that they could share, hence the post. Here is what OSR says for Stability: 3.04 Stability - Monohulls 3.04.1 Able to demonstrate compliance with ISO12217-2* design category A or higher, either by EC Recreational Craft Directive certification having obtained the CE mark or the designer’s declaration * The latest effective version of ISO12217-2 should be used unless the boat was already designed to a previous version 3.04.2 Where compliance in accordance with 3.04.1 cannot be demonstrated, able to demonstrate either: a) i a STIXvalue not less than 32; and ii AVS not less than 130 -0.002*m, but always >= 100°, (where “m” is the mass of the boat in the minimum operating condition as defined by ISO12217-2); and iii a minimum righting energy m*AGZ>172000 (where AGZ is the positive area under the righting lever curve in the minimum operating condition, expressed in kg metre degrees from upright to AVS); or b) Stability Index in ORC Rating System of not less than 110; or c) IRC SSS Base value of not less than 28 Yes I am stumped ! I know that Rick Knowles, “INDIGO” did the HFX/Marblehead race which (today anyway) requires the above. Any help would be greatly appreciated. Thank you John
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