X-Craft 908 P/A as Shallow Water Attack Submarine(SWAS) is used to carryout mine laying torpedo attack, frogman operations and commando landing. The contract of these mini submarines was signed with Italian firm M/s COSMOS in 1986. First of these craft was brought to Pakistan in semi knock down condition in 1988. Subsequently all X-Craft were assembled in Pakistan with TOT. Presently, X-Craft are being operated under COMSUBS alongwith other conventional submarines.