 The latest armed version, the Z-9W, was introduced in 2005 and has night attack capabilities, with an under-nose low-light TV and infra-red observing and tracking unit.The naval version introduced in the 1990s is known as the Z-9C.As well as SAR and ASW duties, the Z-9C can be fitted with an X-band KLC-1 surface search radar to detect surface targets beyond the range of shipborne radar systems.