This part of ISO 12215 defines the loads and specifies the scantlings of sailing craft appendages on monohull sailing craft with a length of hull, LH, of up to 24 m, measured according to ISO 8666. It gives — design stresses, — the structural components to be assessed, — load cases and design loads for keel, centreboard and their attachments, — computational methods and modelling guidance, and — the means for compliance with its provisions.