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The UGM-73 Poseidon missile was the second US Navy nuclear-armed submarine-launched ballistic missile (SLBM) system, powered by a two-stage solid-fuel rocket. It succeeded the UGM-27 Polaris beginning in 1972, bringing major advances in warheads and accuracy. It was followed by Trident I in 1979, and Trident II in 1990.
Estimated diameter of the Poseidon, about 2 meters. The Poseidon is intended to serve as response to U.S. withdrawal from the ABM treaty and to increase the Russian capability to overcome the U.S. missile defense systems, [1]: 25 [20] [2] [3] such as anti-ballistic missiles, etc. The Poseidon warhead can contaminate a large area with radiation.
Poseidon offered a massive MIRV capability of up to 14 warheads per missile. [15] Like the Soviets, the US also desired a longer-range missile that would allow SSBNs to be based in CONUS. In the late 1970s the Trident I (C-4) missile with a range of 7,400 kilometres (4,000 nmi) and eight MIRV warheads was backfitted to 12 of the Poseidon ...
A 2021 map showing how a tsunami could impact San Francisco was thrust back into the spotlight after a 2024 earthquake ... New technology in 2021 allowed the state’s geological survey to update ...
In 1964, a massive 9.2 magnitude earthquake in Alaska resulted in a tsunami in Crescent City, California five hours later. The quake's epicenter was 1,600 miles from the town. ... from California ...
The 2011 tsunami that hit Japan also caused $100m in damage to the state’s ports and harbors. The best way to be prepared is to be aware of the risk a tsunami might pose to the immediate ...
The missile was a three-stage, solid-fuelled system, capable of carrying up to eight W76 warheads in the Mark 4 RB. The first eight Ohio -class submarines were armed with Trident I missiles. Twelve James Madison - and Benjamin Franklin -class submarines were also retrofitted with Trident I missiles, which replaced older Poseidon missiles.
A 7.0-magnitude earthquake struck off the coast of northern California Thursday morning, about 40 miles west of the community of Petrolia, the US Geological Survey said.