(1) What is the current operational readiness of the (a) frigates (i) SAS MENDI and (ii) SAS AMATOLA and (b) submarines (i) SAS Manthatisi, (ii) SAS CHARLOTTE MAXEKE and (iii) SAS QUEEN MODJADJI; (2) (a) what are the full reasons why any of these vessels are out of service and (b) for what time period has each specified vessel been out of service; (3) what is the current operational readiness of the SA Navy?