HII’s Newport News Shipbuilding Completes Successful Acceptance Sea Trials of John F. Kennedy (CVN 79)

HII (NYSE:HII) reported that its Newport News Shipbuilding division has successfully completed acceptance sea trials for the nuclear-powered aircraft carrier John F. Kennedy (CVN 79), the second Gerald R. Ford-class carrier.

Rhea-AI Summary

HII (NYSE:HII) reported that its Newport News Shipbuilding division has successfully completed acceptance sea trials for the nuclear-powered aircraft carrier John F. Kennedy (CVN 79), the second Gerald R. Ford-class carrier. The ship returned to Newport News after at-sea testing and evaluation of key systems and components.

The carrier previously completed builder’s sea trials earlier in the year. According to HII, the next step following these acceptance trials is preliminary acceptance, which will allow the U.S. Navy to begin underway test and evaluation of Kennedy’s unique systems.

Argus Aug 17 session

-2.86% close to close Open Argus

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News Market Reaction – HII

On Aug 17, the first trading day after this news, HII closed 2.86% below the previous close.

Data tracked by StockTitan Argus for the Aug 17 session.

Key Figures

Ship designation: CVN 79 Class position: second Announcement date: Aug. 15, 2026

Ship designation

CVN 79

John F. Kennedy aircraft carrier

Class position

second

Gerald R. Ford-class nuclear-powered aircraft carrier

Announcement date

Aug. 15, 2026

Acceptance sea trials announcement

Historical Context

5 past events · Latest: Aug 11

5 events

1. Aug 11

   Contract award

   24h Move

   -0.9%

   Award of $2.2 billion GSA ASTRO IDIQ task order for SOUTHCOM capabilities.

2. Aug 11

   Autonomous test

   24h Move

   -0.9%

   Successful completion of DIU PRIME prototype project for Watcher autonomous surface vessel.

3. Aug 06

   Production agreements

   24h Move

   +1.3%

   Production agreements supported up to $900 million in shipbuilding work over seven years.

4. Aug 04

   Automation partnership

   24h Move

   -1.7%

   Pilot added intelligent mechanized welding systems at Ingalls Shipbuilding.

5. Aug 03

   Leadership appointment

   24h Move

   -0.1%

   Chris Helton appointed vice president of infrastructure and sustainability, effective Aug. 31.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

acceptance sea trials, nuclear-powered aircraft carrier, builder’s sea trials, preliminary acceptance

4 terms

acceptance sea trials technical

"successfully completed acceptance sea trials of John F. Kennedy"

Acceptance sea trials are the final at-sea tests a ship or boat undergoes so the buyer or regulator can confirm it meets agreed performance, safety and contractual specifications before handover. Like a final test drive and inspection for a new car, these trials matter to investors because they trigger contract milestones such as final payments, revenue recognition, warranties and delivery timing, and they reduce risk by revealing defects that could delay or change the financial outcome.

nuclear-powered aircraft carrier technical

"the second Gerald R. Ford-class nuclear-powered aircraft carrier"

A nuclear-powered aircraft carrier is a large naval ship that serves as a mobile airbase, using onboard nuclear reactors instead of conventional fuel so it can operate for years between refueling. For investors, it matters because building, maintaining and operating such ships drives long-term government spending, defense contractor revenue and supply-chain activity—think of it as a self-sufficient floating airport with very high upfront and upkeep costs that influence related industries.

builder’s sea trials technical

"Kennedy underwent successful builder’s sea trials"

Builder’s sea trials are the first at-sea tests a shipbuilder runs to check that a new vessel’s engines, navigation, safety systems and structure work as intended before formal handover. For investors, successful trials are like a vehicle passing its final inspection: they reduce the chance of costly delays, trigger progress payments or revenue recognition, and signal the project is moving toward delivery and customer acceptance.

preliminary acceptance technical

"the next step for the ship is preliminary acceptance"

Preliminary acceptance is a conditional approval issued by a regulator, exchange, customer, or counterparty indicating that a filing, application, product, or transaction meets initial requirements but still needs final review or completion of outstanding items. For investors it signals that an important hurdle has been passed while further documentation, inspections, or approvals are still required—like a green light with a few checkboxes remaining before final clearance.

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NEWPORT NEWS, Va., Aug. 15, 2026 (GLOBE NEWSWIRE) -- HII (NYSE: HII) announced today that its Newport News Shipbuilding (NNS) division has successfully completed acceptance sea trials of John F. Kennedy (CVN 79), the second Gerald R. Ford-class nuclear-powered aircraft carrier.

Kennedy returned to NNS after further testing and evaluation of important ship systems and components at sea. Earlier this year, Kennedy underwent successful builder’s sea trials.

“It is an honor to take Kennedy to sea to demonstrate the quality work and commitment by our shipbuilders,” said Derek Murphy, NNS vice president of new construction aircraft carrier programs. “This critical set of sea trials is a testament to the entire nuclear shipbuilding enterprise and the work of thousands across our country to prepare CVN 79 to join the fleet.”

The sea trials brought together NNS shipbuilders, John F. Kennedy sailors and Navy personnel to execute the testing and evaluation of ship operations.

CVN 79 continues the legacy of highly capable nuclear-powered aircraft carrier platforms. With the successful completion of acceptance trials, the next step for the ship is preliminary acceptance that will enable the Navy to begin underway test and evaluation of Kennedy’s unique systems.

Photos accompanying this release are available at: http://hii.com/news/hiis-newport-news-shipbuilding-completes-successful-acceptance-sea-trials-of-john-f-kennedy-cvn-79/.

About HII

HII is America’s largest shipbuilder, delivering the world’s most powerful ships and all-domain mission technologies, including unmanned systems, to U.S. and allied defense customers. HII is the largest producer of unmanned underwater vehicles for the U.S. Navy and the world.

With a more than 140-year history of advancing U.S. national security, HII builds and integrates defense capabilities extending from the core fleet to C6ISR, AI/ML, EW and synthetic training. Headquartered in Virginia, HII’s workforce is 45,000 strong. For more information, visit:

• HII on the web: https://www.HII.com/
• HII on Facebook: https://www.facebook.com/TeamHII
• HII on X: https://www.twitter.com/WeAreHII
• HII on Instagram: https://www.instagram.com/WeAreHII
• HII on LinkedIn: https://www.linkedin.com/company/wearehii
  

Contact:

Todd Corillo 
Todd.T.Corillo@HII-co.com
(757) 688-3220

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/ae46f4c2-3750-4ec1-94df-c0ec56760376

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did HII (NYSE:HII) announce about John F. Kennedy (CVN 79) on August 15, 2026?

HII announced that its Newport News Shipbuilding division successfully completed acceptance sea trials for John F. Kennedy (CVN 79). According to HII, the carrier returned to the yard after at-sea testing and evaluation of important ship systems and components.

What are acceptance sea trials for John F. Kennedy (CVN 79) built by HII?

Acceptance sea trials are at-sea tests to evaluate key ship systems and operations before Navy acceptance. According to HII, these trials for CVN 79 involved shipbuilders, sailors, and Navy personnel executing testing and evaluation of ship operations and critical components.

How do acceptance sea trials differ from builder’s sea trials for HII’s CVN 79?

Builder’s sea trials are earlier tests conducted by the shipbuilder to verify performance, while acceptance trials support Navy acceptance. According to HII, John F. Kennedy (CVN 79) completed builder’s sea trials earlier in the year before achieving successful acceptance sea trials.

What is the next step for John F. Kennedy (CVN 79) after successful acceptance sea trials?

The next step for CVN 79 is preliminary acceptance by the Navy. According to HII, this milestone will enable the Navy to begin underway test and evaluation of the carrier’s unique systems as it progresses toward joining the fleet.

Why is the completion of acceptance sea trials for CVN 79 important for HII shareholders?

The completion confirms a major construction milestone on the Gerald R. Ford-class program. According to HII, successful acceptance trials move John F. Kennedy (CVN 79) closer to preliminary acceptance, supporting progress on a large, long-term Navy shipbuilding contract.

Where can investors find photos of HII’s John F. Kennedy (CVN 79) acceptance sea trials?

Photos of the acceptance sea trials are available on HII’s website. According to HII, images can be accessed at the specific news page covering Newport News Shipbuilding’s completion of successful acceptance sea trials for John F. Kennedy (CVN 79).