OVERVIEW: The C-801A (YJ-8A, CSS-N-4 SARDINE) is a short-range, subsonic, solid fuel, active I-Band radar, anti-ship missile with a 165 kg SAP HE warhead. 

DETAILS: The C-801A is the folding-wing varient of the C-801.  After the initial boost, the missile descends to approximately 25 meters and approaches the target area using inertial navigation.  At an unknown distance from the projected target position, the missile activates its I-band radar.  After acquiring a target, the missile descends to approximately 6 meters and enters the terminal attack phase.  The terminal guidance radar with monopulse system possesses high anti-jamming capabilities. 

NOTES: The C-801A entered service in approximately 1985.  

SOURCES: Federation of American Scientists. "C-801." Accessed November 7, 2013. http://www.fas.org/man/dod-101/sys/missile/row/c-801.htm. ; GlobalSecurity.org - Reliable Security Information. "C-801." Accessed November 7, 2013. http://www.globalsecurity.org/military/world/china/c-801.htm. ; Jane's Weapon Systems Vol. 3: Naval, "CSS-N-4 'Sardine' (YJ-8/YJ-8A/C-801); CSS-N-8 'Saccade' (YJ-82/YJ-83/C-802/C-802A/Noor/Ghader), 25 June 2013.