Sat. Apr 18th, 2026

USS Delaware (SSN-791)

USS Delaware (SSN-791): A Vanguard of Modern Naval Warfare

The USS Delaware (SSN-791), a Virginia-class nuclear-powered attack submarine, represents one of the most advanced underwater vessels in the world. Commissioned into the United States Navy on April 4, 2020, this cutting-edge submarine embodies the U.S. Navy’s commitment to maintaining undersea dominance in an era of increasing global maritime challenges.

This article delves into the design, capabilities, operational role, and historical significance of the USS Delaware, while also exploring the broader context of the Virginia-class submarines.


Design and Construction

The USS Delaware is the 18th Virginia-class submarine, a class characterized by its modular construction, stealth features, and multi-mission adaptability. These submarines are built using a block construction process that allows different sections to be fabricated simultaneously in different locations before final assembly. This method reduces construction time and cost while enhancing quality control.

Construction of SSN-791 began in September 2013, led by Huntington Ingalls Industries’ Newport News Shipbuilding division and General Dynamics Electric Boat. These two shipyards have a longstanding partnership in producing submarines for the Navy. Delaware’s keel was laid on April 30, 2016, and it was launched on December 14, 2018.

The submarine spans approximately 377 feet in length and displaces about 7,800 tons when submerged. It is powered by a single S9G nuclear reactor, which provides virtually unlimited range and endurance, limited only by the crew’s food supplies.


Stealth and Combat Capabilities

Stealth is a defining feature of the USS Delaware. Its design incorporates an advanced hull shape, anechoic coatings, and specially designed machinery to minimize acoustic signatures. These enhancements enable it to operate undetected in contested waters, making it a vital asset for intelligence gathering and surprise attacks.

The Delaware is equipped with an array of cutting-edge systems, including:

  • Vertical Launch System (VLS): Used for deploying Tomahawk cruise missiles, the VLS makes the Delaware a potent platform for long-range strike missions.
  • Four 21-inch torpedo tubes: These can deploy Mark 48 torpedoes, which are designed to destroy both surface ships and submarines.
  • Unmanned Underwater Vehicles (UUVs): These extend the submarine’s reconnaissance capabilities, allowing it to operate effectively in both shallow and deep waters.
  • Advanced Sonar Systems: The sonar arrays include bow-mounted, flank-mounted, and towed array systems, providing a comprehensive underwater detection capability.

Operational Role

The USS Delaware is a multi-mission platform designed to excel in a variety of roles:

  1. Anti-Submarine Warfare (ASW): Equipped with state-of-the-art sonar and weaponry, the submarine can detect and neutralize enemy submarines.
  2. Intelligence, Surveillance, and Reconnaissance (ISR): The Delaware can conduct covert operations to gather critical intelligence in hostile territories.
  3. Special Operations: With the capability to deploy Navy SEALs and other special operations forces, the Delaware is pivotal for missions requiring stealth and precision.
  4. Strike Warfare: Its Tomahawk cruise missiles allow it to project power ashore from the safety of the deep ocean.
  5. Mine Warfare: The submarine can deploy or neutralize underwater mines.

Significance of the Name

The USS Delaware is the seventh ship in U.S. naval history to bear the name, honoring the state of Delaware. This lineage reflects Delaware’s historical and strategic contributions to the United States. Governor John Carney and Dr. Jill Biden, the submarine’s sponsor and First Lady of the United States, have highlighted the pride and heritage associated with the name during various ceremonies.


Unique Commissioning Ceremony

Unlike traditional commissioning events held at naval bases or ports, the USS Delaware was commissioned underwater—a first in U.S. Navy history. The virtual ceremony, conducted due to the COVID-19 pandemic, underscored the adaptability of the Navy and the technological prowess of its modern platforms.


Virginia-Class: A Revolution in Submarine Warfare

The USS Delaware belongs to the Block III series of Virginia-class submarines, featuring several upgrades over earlier blocks:

  • Redesigned Bow: The Block III submarines have two large-diameter Virginia Payload Tubes (VPTs), replacing the 12 individual vertical launch tubes of earlier models. This simplifies construction and enhances payload flexibility.
  • Improved Sonar Arrays: These submarines are equipped with a Large Aperture Bow (LAB) sonar array, which uses fiber-optic technology for superior detection capabilities.
  • Cost Efficiency: The Block III design reflects lessons learned from earlier construction, making it faster and cheaper to build without sacrificing performance.

The Virginia-class program itself is critical to the Navy’s strategy of maintaining undersea dominance, as these submarines are expected to replace the aging Los Angeles-class boats.


Future Prospects and Legacy

The USS Delaware is a formidable addition to the U.S. Navy’s submarine fleet, designed to operate well into the mid-21st century. Its capabilities ensure that the U.S. maintains a qualitative edge in undersea warfare, even as potential adversaries like China and Russia continue to modernize their naval forces.

Moreover, the USS Delaware highlights the broader trends in modern naval strategy:

  • The increasing emphasis on multi-mission platforms.
  • The integration of unmanned systems.
  • The importance of stealth and survivability in a contested maritime environment.

As the Navy moves forward with the Columbia-class ballistic missile submarines and continues to enhance the Virginia-class fleet, the USS Delaware will remain a testament to American ingenuity and the enduring importance of undersea dominance.


Conclusion

The USS Delaware (SSN-791) is more than just a submarine; it is a symbol of the U.S. Navy’s innovation and adaptability. With its unparalleled stealth, advanced weaponry, and multi-mission capabilities, the Delaware is poised to play a critical role in safeguarding U.S. interests across the globe.

Whether operating in the vast depths of the Atlantic or the shallow littorals of contested regions, the USS Delaware ensures that America’s undersea forces remain second to none.

 

USS Delaware (SSN-791) transits the Atlantic Ocean during builder's sea trials in August 2019 - 2