BVT Surface Fleet Ltd. Maritime Integration & Support Centre on the top of Portsdown Hill at the Portdown Technology Park, Southwick Road. The Maritime Integration & Support Centre (MISC) provides services to its customers enabling them to conduct Tests, Trials and Integration on installed Combat System (CS) equipment.BVT Suface Fleet Ltd. MISC's main customers are Minisry of Defence & BAE Systems, as in most companies who deal with the defence industry the site is secure and require notice to visit.Any delivery or collection from the site requires notice to the Gate House from a nominated host on site.