To my knowledge the only Anti-Ship Missile used by the SAAF during the early embargo years (1978 onwards) was the AS-30. It was primarily used by the Buccaneers in the Anti-ship role, but also by the Mirage 111 and F1 in other roles. The earlier AS-20 was also used.

This is not to say that there weren’t perhaps a few AM-39’s…who knows. There is still a lot of secrecy surrounding apartheid era defence.