The 87m-long PNS Rizwan is said to be similar but much smaller to India's indigenously-built 175m-long missile range instrumentation ship, INS Dhruv, that is packed with long-range radars, dome-shaped tracking antennae, and advanced electronics. INS Dhruv was commissioned in 2021. China has helped Pakistan Navy induct its first specialised research or spy ship, which apparently has the capability to track launch of nuclear-tipped ballistic missiles and undertake other intelligence-gathering missions.

Source: With help from China, Pakistan Navy gets its first spy ship