Ocean's Abyss Terror: Who is arming 'invisible submarines' with hypersonic missiles?

The U.S. Navy is undertaking a significant strategic shift, fundamentally redesigning its future undersea force. Pentagon plans involve converting 19 Virginia-class nuclear-powered submarines, originally designed as attack vessels, into advanced guided-missile submarines (SSGNs).

This transformation is achieved by integrating the innovative Virginia Payload Module (VPM), a 25.6-meter section that adds 28 new missile launchers to the 12 already present on existing vessels. These new launchers can accommodate both the traditional Tomahawk missiles and next-generation hypersonic weapons. This capability allows the U.S. Navy to operate undetected deep within heavily controlled enemy zones.

Analysts note that submarines remain among the few weapon systems capable of approaching and remaining near a conflict zone for extended periods, even within the first island chain from Japan to Taiwan and the Philippines, without being easily detected. The deployment of hypersonic missiles further compresses enemy reaction times, presenting a significant tactical advantage.

This critical transition coincides with the U.S. Navy's official retirement of four legendary Ohio-class submarines. These vessels, converted two decades ago to carry up to 154 Tomahawk missiles each, were a cornerstone of conventional deterrence. Their withdrawal creates a temporary gap, as the new Virginia submarines will carry roughly a quarter of that firepower, requiring four new vessels to replace the role of one Ohio.

However, naval planners believe distributing missiles across multiple, independent platforms offers a substantial advantage, forcing adversaries to track dozens of stealthy targets instead of a few large ones. The first refitted Virginia submarines are expected to join the fleet around 2029, with the program concluding in 2038. This entire strategic overhaul is primarily focused on countering China, which is rapidly expanding its own submarine fleet and missile arsenal, as Washington prepares for potential contingencies around Taiwan.