PLA PROJECT 705 and 705K (ALFA/LIRA CLASS) - Nuclear Powered Attack Submarines (SSN). Speed (Knots) : 14/41 (World's fastest and deepest diving submarine). Armament : o 6/533mm bow TT (20 torpedoes (VA-111 or 21 SS-N-15/81R) or 24 mines); o ? /650 mm (12 SS-N-16/Vodopad ).