wong,
The US has been taking SUBROCS off of their submarines because they were designed for a time when submarines were much less quiet, and you needed to have standoff capability for convergence zone contacts. In fact, the US Navy had a nuclear version of the SUBROC in the 60's/70's that was stand equipment, I believe, for SSN's.
Now that SSN's typically detect eachother well under effective SUBROC range, the US Navy feels they are not worth the space they take up on the submarines.
The Russians have a fundamentally different submarine design and operations theory, so they retain their SUBROCS.
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LW
 
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