SAMSA annouced as presenting sponsor of the National Boat Show 20 May 201120 May 2011 PrintPDFSend to a friendMore sharing options More sharing options The South African Maritime Authority (SAMSA) has been announced as the official presenting sponsor of the National Boat Show, featuring the Dive Expo - Boat, Dive and Leisure Show taking place form 12 - 14 August at the Coca-Cola dome.