The Sailing Instructions (SI) are now available on the official Notice Board. Here is the link for the document: https://www.regattanetwork.com/clubmgmt/applet_event_documents.php?regatta_id=28867
Here is the Official Notice Board for the race: https://www.regattanetwork.com/clubmgmt/applet_notice_board.php?regatta_id=28867