By Kris Osborn, President, Center for Military Modernization
(Washington D.C.) The somewhat abrupt end to the Cold War generated a quick and potentially premature cancellation of the highly-capable Seawolf-class attack submarines initially slated to replace the existing fleet of Los Angeles-class boats.
Although the service initially planned to build 29 Seawolf submarines, only three were actually built before the program came to halt due to budget constraints in the mid-1990s. The early termination of the Seawolf-class submarines inspired the birth of the now fast-progressing Virginia-class submarines, yet the Seawolfs themselves were engineered to be a paradigm-changing “jump” forward in capability beyond the Los Angeles submarines.
The Seawolf was larger than the Virginia-class boats and considered expensive at $3 billion per unit, yet its mission was clearly defined. Seawolfs were designed to, among other things, hunt and potentially destroy nuclear-armed Soviet Typhoon-class ballistic missile submarines, according to Harpoondatabases.com.
The Seawolfs were also built to track Soviet Akula-class attack submarines in “deep ocean” environments, according to research in the US Naval Institute’s Guide to Ships and Aircraft of the US Fleet.
Seawolf-class hulls are constructed from HY-100 steel, which is stronger than the HY-80 steel employed in previous classes, in order to withstand water pressure at greater depths,” the US Naval Institute Guide states.
As very large boats, the Seawolf-class is able to carry as many as 50 Tomahawk cruise missiles, something which might explain the rationale for why the U.S. Navy is building Virginia Block V attack submarines with an extra 80-foot section adding 28 more Tomahawks to the previously existing 14. Called Virginia Payload Tubes, these extensions are now being built into Block V Virginias, in part to replace the aging, yet heavily armed Ohio-class Guided Missile Submarines and Seawolf-class.
There are other similarities between the Seawolf concept and upgrades to the Virginia-class boats, such as the addition of a Large Aperture Bow sonar system to Virginias, which appears somewhat aligned with the Seawolf’s larger “spherical sonar array, wide aperture array and new towed-array sonar,” as explained by Harpoondatabases.com.
The Seawolf is also reportedly designed for shallow operations and Special Operation Forces mission support and delivery. This is also quite similar to Virginia boats, as Block III Virginias are built with a special “Lock Out Trunk” designed to fill with water and quietly enable SOF forces to deploy on clandestine missions.
Kris Osborn is the Military Affairs Editor of 19FortyFive and President of Warrior Maven – Center for Military Modernization. Osborn previously served at the Pentagon as a Highly Qualified Expert with the Office of the Assistant Secretary of the Army—Acquisition, Logistics & Technology. Osborn has also worked as an anchor and on-air military specialist at national TV networks. He has appeared as a guest military expert on Fox News, MSNBC, The Military Channel, and The History Channel. He also has a Masters Degree in Comparative Literature from Columbia University.
