§ Mr. Dalyellasked the Secretary of State for Defence, pursuant to the reply of 29 November, if he is satisfied that sonar fitted to submarines in the Conqueror class can operate satisfactorily in depths of 150 ft. of water in the Baltic.
§ Mr. BlakerThe sonars fitted to HM submarines can operate in shallow water although all sonars are necessarily less effective in such conditions because of environmental limitations.
§ Mr. Dalyellasked the Secretary of State for Defence, pursuant to the reply of 29 November, what escorts the carrier "25 de Mayo" had and where.
§ Mr. BlakerA number of escort vessels. I am not prepared to give details.