Jingang-class submarine

The Jingang-class submarine (金刚, or "vajra"), also known as the Project 209-class is a class of nuclear-powered ballistic missile submarine in service with the navy of Songguo. It carries 14 JC-2 submarine-launched ballistic missiles, and displaces 9,000 tons submerged. It has a length of 426 feet, a beam of 34 feet, and a draft of 27.5 feet, traveling at a speed of 23 knots submerged and 12.5 knots on the surface. The Jingang-class boats are also being equipped to carry the new JC-3 missile. It is no longer in active production, having been succeeded by the Project 309-class boats, but is not being phased out of service.

The Jingang-class was put into service in the 1970s, as Songguo's first modern ballistic missile submarine. It succeeded the Egui-class submarine (鳄龟, or "snapping turtle"), which had been the country's only seaborne deterrent since it originally developed nuclear weapons in the 1950s. It is believed that many of the technologies incorporated in it were stolen from Kaxakh through Operation 0185.

There are twenty-one Jingang-class boats in service with the Songhua navy.