Silkworm (missile)
The Shang Yo or SY-series (Chinese: 上游; pinyin: shàngyóu; literally "Upstream"), and the Hai Ying or HY-series (Chinese: 海鹰; pinyin: hǎiyīng; literally "Sea Eagle") were early Chinese anti-ship missiles. They were derived from the Soviet P-15 Termit missile.
The HY-1 and HY-2 received the NATO reporting name Silkworm. However, to confuse matters, Western media also referred to the SY-series, and its export derivatives, the Fei Long or FL-series (Chinese: 飞龙; pinyin: fēilónɡ; literally "Flying Dragon"), as Silkworms.
Read more about Silkworm (missile): SY-series, FL-series, SFQ-1, YJ-4, XW-41, C-611, Operational History, Nomenclature, Operators