sentences:  In March 1956, he went so far as proposing purchase of nuclear weaponry for the RAN's De Havilland Sea Venoms.During much of Dowling's remaining time as CNS, faced with the obsolescence of HMAS "Sydney" and in accordance with its two-carrier policy, the Navy tried unsuccessfully to acquire a new and larger aircraft carrier to augment .Believing in the maintenance of traditionally close ties between the RAN and the Royal Navy, he worked to coordinate his policies as CNS with those of Britain's First Sea Lord, Earl Mountbatten.