Nuclear submarine - Wikipedia
A nuclear submarine is a submarine powered by a nuclear reactor, but not necessarily nuclear-armed. Nuclear submarines have considerable performance advantages over "conventional" (typically diesel …
Nuclear submarine | Size, Reactor, Countries, & Accidents - Britannica
Dec 29, 2025 · For these reasons it was inevitable that navies with nuclear-powered strategic submarines would also build nuclear-powered attack submarines. Almost all modern nuclear attack …
China now operates world's 2nd-largest nuclear submarine fleet
Jan 13, 2026 · China has overtaken Russia in nuclear-powered submarines, fielding 32 active boats in 2026 as undersea competition with the US intensifies.
U.S Navy Speeds Up Building Program For Its Largest Ever Nuclear ...
2 days ago · The Ohio-class submarines will retire at the rate of one submarine per year from 2027 to 2040, and the Columbia-class submarines will replace them on a one-for-one basis starting in 2031. …
10 Of The Most Advanced Nuclear Submarines In The World
Oct 17, 2025 · Nuclear submarines are a true engineering marvel, but some builds stand head and shoulders above the rest. These are the most impressive and advanced nuclear submarines in use …
North Korea reveals new images of its first ‘nuclear-powered’ submarine
Dec 24, 2025 · North Korea on Thursday released new images of what it claims is its first nuclear-powered submarine, a massive vessel equal in size to some of the United States Navy’s attack subs.
North Korea Unveils the Completed Hull of What It Calls a Nuclear Submarine
Dec 25, 2025 · North Korea has been testing various submarine-launched missiles and torpedoes in recent years, claiming that they were built to deliver nuclear warheads.
The U.S. Navy’s $132 Billion Columbia-Class Submarine ... - 19FortyFive
2 days ago · The US Navy's largest sub is delayed. Discover why the Columbia-class is vital for nuclear deterrence and how schedule slips put the fleet at risk.
US-South Korea nuclear submarine deal: What does it mean? - BBC
Nov 16, 2025 · South Korea's government has announced that it has finalised an agreement to build nuclear-powered submarines in partnership with the United States. The US has approved the "attack...
U.S.-Approved Nuclear Submarine in South Korea Ushers in New Era
Nov 3, 2025 · South Korea received U.S. approval to build a nuclear-powered attack submarine that can operate for months underwater, track Chinese and North Korean vessels in the Pacific, and guard key...