Tag Archives: Trident missile

Tactical Nuclear Warhead to Respond ‘in Kind’ to Attack: W76-2

The US Navy has now deployed the new W76-2 low-yield Trident submarine warhead. The first ballistic missile submarine scheduled to deploy with the new warhead was the USS Tennessee (SSBN-734)…The W76-2 warhead was first announced in the Trump administration’s Nuclear Posture Review (NPR) unveiled in February 2018. There, it was described as a capability to “help counter any mistaken perception of an exploitable ‘gap’ in U.S. regional deterrence capabilities,” a reference to Russia. The justification voiced by the administration was that the United States did not have a “prompt” and useable nuclear capability that could counter – and thus deter – Russian use of its own tactical nuclear capabilities…

We estimate that one or two of the 20 missiles on the USS Tennessee and subsequent subs will be armed with the W76-2, either singly or carrying multiple warheads. Each W76-2 is estimated to have an explosive yield of about five kilotons.* The remaining 18 missiles on each submarine like the Tennessee carry either the 90-kiloton W76-1 or the 455-kiloton W88. Each missile can carry up to eight warheads under current loading configurations…

The National Nuclear Security Administration (NNSA) has further explained that the “W76-2 will allow for tailored deterrence in the face of evolving threats” and gives the US “an assured ability to respond in kind to a low-yield nuclear attack.”

Excerpt from William M. Arkin and Hans M. Kristensen, US Deploys New Low-Yield Nuclear Submarine Warhead, FAS, Jan. 29, 2020

*The Hiroshima bomb was 15 kilotons.

Back in Fashion: Mini-Nukes from the Seas

The Pentagon has completed initial draft plans (June 2018) for several emerging low-yield sea-launched nuclear weapons…–a low-yield sea-launched nuclear cruise missile and long-range sub-launched low-yield warhead still in development… The US Navy Plans to add a nuclear weapon to Virginia-Class Attack Submarines….

There are currently over 1,000 nuclear warheads in the US arsenal that have low-yield options. A yield is considered low if it’s 20 kilotons or less,” an essay from the Federation of American Scientists states….A massively smaller 5-or-6 kt warhead on a Trident would still bring the advantage of long-range attack, yet afford smaller scope, and therefore less destructive, attack possibilities….The 130,000-pound Trident II D5 missile can travel 20,000-feet per second, according to Navy figures. The missiles cost $30 million each…

Also, the now-in-development Air Force Long-Range Stand-Off (LRSO) weapon, an air launched nuclear cruise missile, will bring additional airborne attack options – particularly when it comes to areas well-defended by advanced, high-tech air defense systems, where stealth aircraft might have more difficulty operating.  The LRSO, which could also be launched at farther stand-off ranges, is also designed for extremely high-risk areas armed with advanced air defense systems….

Excerpts from Pentagon completes draft plans for new low-yield sea-launched nuclear weapon, Fox News, June 5, 2018