Nevskoe Design Bureau (NDB) PJSC ( Founded in 1931) is one of the oldest design bureaus of Naval surface shipbuilding in Russia. Today the NBD is the leading design bureau of United Shipbuilding Corporation of Russia. It is the chief enterprise responsible for the design, modernization and re equipment of the largest and the most complex surface ships of the ocean zone - aircraft carriers and large landing ships, as well as shore based test facilities.