The IMO Group provides an opportunity for all members to raise and discuss matters relating to the Institution’s work and responsibilities as a Non-Governmental Organisation (NGO) with Consultative Status at the IMO using the Group Forum.
The work and activities of the IMO Committee will be reported regularly in the Forum. Members may also comment on the Committee’s work, or propose matters for its consideration
It seems that there is some rule where by the structure is calculated , when the canvas is removed or when the sail or wing is feathered. I would like to know what area with regard to wind load is permissible for fixed structure other than that of the ship topsides and superstructure.
"Since IMO has no criteria for sailassisted vessels the LY@ code for monohull sailing yachts (MCA 2007 ) was applied to assess the influence of sail assist fixed structure on stability."