MBDA to Install Sea Ceptor Missiles on U.K. Royal Navy's New Type 31 Frigates Our Bureau 1494 MBDA Sea Ceptor missile The U.K. Royal Navy has placed an order for MBDA-manufactured Sea Ceptor missiles to be armed on its Type-31 frigates. The new contract includes integration of Sea Ceptor with the Type 31’s systems, along with delivery and installation of ship hardware for the Type 31 programme. Designed and made in the U.K., the contract forms part of the Portfolio Management Agreement (PMA), a partnership initiated in 2010 between the U.K. MoD and MBDA on sovereign complex weapons design and production.