Al-Sabehat

Al-Sabehat is a swimmer delivery vehicle built and operated by Iran. The SDV is approximately long, and carries a crew of 2 plus 3 divers. It can carry out coastal reconnaissance missions, planting naval mines on ports and anchorages, as well as lifting special forces. According to Abhijit Singh, a senior fellow at Observer Research Foundation, the SDV "can be used effectively for unconventional attacks".
ships function as a mothership for Al-Sabehat SDVs.
Al-Sabehat SDV is designed at Esfahan Underwater Research Centre.
Planning and construction of Al-Sabehat was reportedly started in 1996 and the first vessel was unveiled on 29 August 2000.