Do the Russians or Chinese have a SUBROC equivilant?
Soviets had one made in the 60's but no idea if there are still any around...
Yes, actually two versions:
https://en.m.wikipedia.org/wiki/RPK-2_Vyuga
https://en.m.wikipedia.org/wiki/RPK-6_Vodopad/RPK-7_Veter
We no longer have Subroc or any other tactical naval weapons.