Indian navy commissioned a new VLF communication center to facilitate communication between its nuclear submarines that will stay submerged for months.
---
Navy gets new facility to communicate with nuclear submarines prowling underwater - The Times of India
---
Nuclear-powered submarines, armed with nuclear-tipped missiles, in turn, are considered the most effective and difficult-to-detect nuke platform since they can operate underwater at long ranges for months at end.
Navy gets new facility to communicate with nuclear submarines prowling underwater - The Times of India