XW-41
A developed version based on HY-4, known as the XW-41, has been developed. This latest version of the C-201 missile family is said to have a 300 km range with additional GPS/GLONASS guidance. However, due to the availability of more advanced anti-ship missile with similar range, such as the C-602, the future of XW-41, like others in the Silkworm missile family, is uncertain despite its successful trials. Although still a member of Silkworm missile, the developer considers the missile was different enough to be a listed as a separate category of its own due to the amount of new technologies adopted. After the Gulf War, United Arab Emirates ordered 30 of these shore-based version for coastal defense, and accordingly to Jane's Defence Weekly, these missiles are referred by the general name Silkworm missiles, but domestic Chinese sources have claimed that these were XW-41s, though there are reports claiming these missiles are other models of Silkworm series.
Read more about this topic: Silkworm (missile)