The training began officially in March 1980 and the force became fully operational in the following May. In July 1980, the SASR was directed to develop an offshore (maritime) capability, concerned primarily with retaking Bass Strait oil rigs in the event of terrorist capture. These operations were to be handled by a dedicated water operations team which included 17 Clearance Divers from the RAN's Clearance Diving Branch, who were placed under operational control of the SASR from 4 August 1980 as part of the TAG.