If Babur is supposed to be torpedotube launched by submarines, then -given PN has only subs with 533mm tubes - Babur cannot be much fatter than C602. Worst case: PN has 650mm tubes on the new Chinese subs.
Babur
Length 6.25 m (7 m with booster)
Diameter 0.52 m (missile body)
Wingspan 2.67 m
Weight <1,500 kg
The YJ-62 is a conventional cruise missile design, with mid-body wings which deploy following launch. The engine inlet is mounted slightly forward of the cruciform tail fins. The missile is 6.1m long, without the
0.9m launch booster, and weights 1,140kg. The solid propellant booster weighs an additional 210kg.
"The YJ-62 cruise missile is a PLAN analogue to the anti-shipping variants of the RGM-109 Tomahawk/MRASM. The weapon has a similar general configuration to the Tomahawk family, but employs a unique fixed scoop inlet for the air breathing engine.
Cited specifications include a length of 6.1/7.0 metres, launch mass of 1,140/1,350 kg, warhead mass of 300 kg, cruise speed of 0.9 Mach, range for turbojet variant of 280 km / 150 NMI, and dual mode anti-ship and coastal target capability similar to later blocks of the Harpoon."
http://www.ausairpower.net/APA-PLA-Cruise-Missiles.html