USS Colorado (SSN-788): A Deep Dive into the Virginia-class Attack Submarine
The USS Colorado (SSN-788) represents a significant leap in undersea warfare technology. As a nuclear-powered attack submarine of the United States Navy, this vessel is part of the highly advanced Virginia-class. Named after the State of Colorado, the SSN-788 is not just another vessel in the fleet; it is a sophisticated piece of engineering designed for stealth, endurance, and immense striking power.
Built through a partnership between Huntington Ingalls Industries and the Electric Boat division of General Dynamics, the USS Colorado is the fifteenth ship of her class. More importantly, she is the fifth vessel of the redesigned Block III configuration. This specific iteration features a revised bow design and incorporates Vertical Launch System (VLS) technology—a method of launching missiles vertically from within the submarine—originally utilized by the Ohio-class guided missile submarines.

Key Facts
- Class: Virginia-class (Block III)
- Propulsion: S9G nuclear reactor
- Commissioned: 17 March 2018
- Home Port: Joint Base Pearl Harbor-Hickam, Hawaii
- Armament: 38 total weapons, including Tomahawk missiles
- Motto: Terra Marique Indomita (By land and sea, untamed)
Technical Specifications and Capabilities
The USS Colorado is designed for long-term deployment with an essentially unlimited range, limited only by the 33-year lifespan of its nuclear fuel. Powered by an S9G reactor, the submarine generates 40,000 shaft horsepower (SHP), allowing it to reach speeds of up to 25 knots (46 km/h).
Dimensions and Displacement
Measuring 114.9 meters (377 feet) in length with a beam (width) of 10.3 meters (34 feet), the vessel maintains a displacement of 7,800 tons in both light and full configurations. It is engineered to operate at test depths exceeding 800 feet (240 meters).
Weaponry and Combat Systems
The submarine's combat effectiveness is driven by its diverse armament. It is equipped with:
- Four 21-inch torpedo tubes
- Two Virginia Payload Tubes
- Capacity for up to 38 weapons, including 12 Tomahawk missiles (distributed across two tubes holding 6 missiles each)
Development and History
The journey of the USS Colorado began on 22 December 2008, when the initial contract was awarded. Construction progressed through several key milestones:
- Keel Laid Down: 7 March 2015
- Christened and Launched: 3 December 2016, sponsored by Annie Mabus
- Commissioned: 17 March 2018
With a total cost of approximately $2.6 billion, the vessel serves as a cornerstone of modern naval defense, currently maintaining active service out of Joint Base Pearl Harbor-Hickam in Hawaii.
Summary of USS Colorado (SSN-788)
| Feature | Specification |
|---|---|
| Class & Type | Virginia-class attack submarine |
| Length | 114.9 meters (377 feet) |
| Propulsion | S9G reactor |
| Max Speed | 25 knots |
| Complement | 134 officers and men |
| Total Weapons | 38 |
Frequently Asked Questions
What makes the Block III Virginia-class different?
The Block III design includes a revised bow and incorporates Vertical Launch System (VLS) technology, which was previously used in the Ohio-class guided missile submarines.
How long can the USS Colorado operate without refueling?
Due to its S9G nuclear reactor, the submarine has an essentially unlimited range, with a projected lifespan of approximately 33 years.
Who was the sponsor for the USS Colorado?
The submarine was sponsored by Annie Mabus, the daughter of former Navy Secretary Ray Mabus.
What is the primary armament of the SSN-788?
The submarine can carry a total of 38 weapons, utilizing four 21-inch torpedo tubes and two Virginia Payload Tubes capable of holding Tomahawk missiles.
Where is the USS Colorado currently based?
The vessel's home port is Joint Base Pearl Harbor-Hickam in Hawaii.