The array would be underwater which would be connected by a cable to a station on shore where they would process the information (e.g. NAVFAC Bermuda, NAVFAC Adak). In addition to the bottom arrays, in the 1970s they were planning and preparing for what are essentially mobile SOSUS arrays, the SURTASS ships, the first of which arrived in the 1980s. Additionally, technology was improving which allowed for them to consolidate shore facilities, so that one shore station could monitor multiple arrays.
A good scenario might be an attack on a SOSUS shore facility or a SURTASS ship with it's protection.
I agree, but are there even enough ships out there to provide an adequate escort for such a ship. In a modern submarine surge, I think a SURTASS ship would be Backfire/Bear G/Hong 6 bait.
Remember that the evil which is now in the world will become yet more powerful, and that it is not evil which conquers evil, but only love -- Olga Romanov.