Launch of unarmed Trident II missile from Ohio-class ballistic missile submarine.

According to a news published on Twitter by Lucas Tomlinson on February 12, 2021, the launch of an unarmed Trident II missile from an Ohio-class ballistic missile submarine off Florida into space before splashing down in South Atlantic Tuesday.
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Submarine-launched ballistic missile Trident D5 (Picture source :Twitter)

Witnesses shared videos of what appeared to be a ballistic missile launched by a submarine off the Atlantic coast of Florida. The US Navy later said that information regarding the test launch of the Trident II (D5) missiles was filed before launch.

The Navy's ballistic missile submarines, often referred to as "boomers," serve as an undetectable launch platform for intercontinental missiles. They are designed specifically for stealth and the precise delivery of nuclear warheads.

Each of the 14 Ohio-class SSBNs originally carried up to 24 submarine-launched ballistic missiles (SLBMs) with multiple, independently-targeted warheads. However, under provisions of the New Strategic Arms Reduction Treaty, each submarine has had four of its missile tubes permanently deactivated and now carries a maximum of 20 missiles. The SSBN's strategic weapon is the Trident II D5 missile.

SSBNs are specifically designed for extended deterrent patrols. To decrease the amount of time required for replenishment and maintenance, Ohio-class submarines have three large-diameter logistics hatches that allow sailors to rapidly transfer supply pallets, equipment replacement modules and machinery components, thereby increasing their operational availability.

The Ohio-class design allows the submarines to operate for 15 or more years between major overhauls. On average, the submarines spend 77 days at sea followed by 35 days in-port for maintenance. Each SSBN has two crews, Blue and Gold, which alternate manning the submarines and taking them on patrol. This maximizes the SSBN's strategic availability, reduces the number of submarines required to meet strategic requirements, and allows for proper crew training, readiness, and morale.

The Trident missile is a submarine-launched ballistic missile (SLBM) equipped with multiple independently targetable reentry vehicles (MIRV). Originally developed by Lockheed Missiles and Space Corporation, the missile is armed with thermonuclear warheads and is launched from nuclear-powered ballistic missile submarines (SSBNs).