 By this point, Crabb's heavy drinking and smoking had taken its toll on his health, and Crabb was not the diver that he had been in World War II.MI6 recruited Crabb in 1956 to investigate the Soviet cruiser "Ordzhonikidze" that had taken Nikita Khrushchev and Nikolai Bulganin on a diplomatic mission to Britain.According to Peter Wright in his book "Spycatcher" (1987), Crabb was sent to investigate "Ordzhonikidze"s propeller, a new design that Naval Intelligence wanted to examine.