SSN is the US Navy hull classification symbol for nuclear-powered general-purpose attack submarines. SS means "Submarine, General" according to the NATO Standard Ship Designator System with SSN referr
USS New Hampshire (SSN-778), a Virginia-class submarine
HMS Astute, an Astute-class submarine.
Virginia-class submarine
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The Virginia class, or the SSN-774 class, is a class of nuclear-powered attack submarines with vertical launching system-launched cruise missile capability in service with the United States Navy. The
SSN (hull classification symbol)
…Royal Navy of the United Kingdom Virginia-class submarine – 3 planned (with an option to purchase a further two vessels) SSN-AUKUS – up to eight planned…
USS Virginia underway in July 2004
Rendering of a Virginia-class attack submarine
USS North Carolina, the last Block I boat, at her commissioning ceremony: Her advanced masts are visible in this image.
A sailor is using an Xbox 360 controller to control the photonic masts of USS Colorado in 2018, the first submarine to use this Xbox controller.