HII Completes Initial Sea Trials of Virginia-Class Submarine Massachusetts (SSN 798)
HII (NYSE: HII) announced that Newport News Shipbuilding completed initial sea trials for the Virginia‑class attack submarine Massachusetts (SSN 798) on Oct. 7, 2025.
Over several days at sea, the NNS and Navy team tested systems and components, including the submarine’s first submergence and high‑speed maneuvers on the surface and submerged. The testing program will continue at NNS ahead of delivery to the U.S. Navy. Massachusetts is the 25th Virginia‑class submarine and will be the 12th delivered by Newport News Shipbuilding; the boat was christened in May 2023.
HII (NYSE: HII) ha annunciato che Newport News Shipbuilding ha completato i primi collaudi in mare per il sottomarino d'attacco di classe Virginia Massachusetts (SSN 798) l'7 ottobre 2025.
Durante diversi giorni in mare, il team della NNS e della Marina ha testato sistemi e componenti, inclusa la prima sommersione e le manovre ad alta velocità sia in superficie che sott'acqua. Il programma di collaudo proseguirà presso la NNS prima della consegna alla Marina degli Stati Uniti. Massachusetts è la 25ª imbarcazione di classe Virginia e sarà la 12ª consegnata da Newport News Shipbuilding; la barca è stata battezzata nel maggio 2023.
HII (NYSE: HII) anunció que Newport News Shipbuilding completó las primeras pruebas en mar abierto para el submarino de ataque de clase Virginia Massachusetts (SSN 798) el 7 de octubre de 2025.
Durante varios días en el mar, el equipo de NNS y la Marina probó sistemas y componentes, incluida la primera inmersión y las maniobras a alta velocidad tanto en superficie como bajo el agua. El programa de pruebas continuará en NNS antes de la entrega a la Marina de los Estados Unidos. Massachusetts es el 25º submarino de la clase Virginia y será el 12º entregado por Newport News Shipbuilding; el buque fue bautizado en mayo de 2023.
HII (NYSE: HII)는 Newport News Shipbuilding이 버지니아급 공격 잠수함 Massachusetts (SSN 798)의 첫 해상 시험을 2025년 10월 7일에 완료했다고 발표했습니다.
며칠에 걸친 해상에서 NNS와 해군 팀은 잠수함의 시스템과 부품을 시험했고, 처음으로 잠항했고 수면 및 수중에서의 고속 기동을 포함했습니다. 시험 프로그램은 미국 해군에 인도되기 전에 NNS에서 계속될 예정입니다. Massachusetts는 버지니아급 잠수함의 25번째이며 뉴포트뉴스 조선소가 인도하는 12번째 잠수함이 될 것이며, 이 보트는 2023년 5월에 취명되었습니다.
HII (NYSE: HII) a annoncé que Newport News Shipbuilding a terminé les premiers essais en mer pour le sous-marin d'attaque de classe Virginia Massachusetts (SSN 798) le 7 octobre 2025.
Pendant plusieurs jours en mer, l'équipe de NNS et de la Marine a testé les systèmes et les composants, y compris la première plongée et les manœuvres à grande vitesse à la surface et sous l'eau. Le programme d'essais se poursuivra chez NNS avant la livraison à la Marine américaine. Massachusetts est le 25e sous-marin de classe Virginia et sera le 12e livré par Newport News Shipbuilding; le navire a été baptisé en mai 2023.
HII (NYSE: HII) gab bekannt, dass Newport News Shipbuilding die ersten Seetests des Virginia-Klasse Angriff-U-Boots Massachusetts (SSN 798) am 7. Oktober 2025 abgeschlossen hat.
Über mehrere Tage auf See testete das NNS- und Navy-Team Systeme und Bauteile, einschließlich der ersten Untertauchen und Hochgeschwindigkeitsmanöver an der Oberfläche und unter Wasser. Das Testprogramm wird bei NNS fortgesetzt, bevor es der US-Marine übergeben wird. Massachusetts ist das 25. Virginia-Klasse-U-Boot und wird das 12e von Newport News Shipbuilding gelieferte Boot sein; das Boot wurde im Mai 2023 getauft.
HII (NYSE: HII) أعلنت أن Newport News Shipbuilding أكملت الاختبارات البحرية الأولية لسفينة الهجوم من طراز Virginia Massachusetts (SSN 798) في 7 أكتوبر 2025.
على مدار عدة أيام في البحر، اختبر فريق NNS والبحرية الأنظمة والمكوّنات، بما في ذلك الغوص الأول والمناورات عالية السرعة على السطح وتحت الماء. سيستمر برنامج الاختبارات في NNS قبل التسليم إلى البحرية الأمريكية. Massachusetts هي المدمرة الـ25 من فئة Virginia وستكون الثانية عشرة التي تسلمها Newport News Shipbuilding; تم تسمية السفينة في مايو 2023.
HII (NYSE: HII) 宣布 Newport News Shipbuilding 已于 2025 年 10 月 7 日完成 Virginia 级攻击潜艇 Massachusetts (SSN 798) 的首轮海上试验。
在海上持续数日的测试中，NNS 与海军团队对系统与部件进行了测试，包括潜艇的首次下潜以及在水面和水下的高速机动。测试计划将在 NNS 继续，直至交付给美国海军。Massachusetts 是第 25 艘 Virginia 级潜艇，将由 Newport News Shipbuilding 交付的第 12 艘；该艇于 2023 年 5 月下水并命名。
- Completed initial sea trials including first submergence and high‑speed maneuvers
- Massachusetts is the 25th Virginia‑class submarine and 12th scheduled delivery by NNS
- None.
NEWPORT NEWS, Va., Oct. 07, 2025 (GLOBE NEWSWIRE) -- HII (NYSE: HII) announced today that its Newport News Shipbuilding division has successfully completed initial sea trials for Virginia-class attack submarine Massachusetts (SSN 798).
Over the course of several days at sea, the NNS and Navy team conducted testing of systems and components, including submerging the submarine for the first time and high-speed maneuvers while on the surface and submerged. The testing program will continue at NNS ahead of delivering the boat to the U.S. Navy.
“Our entire team at Newport News Shipbuilding understands the importance of delivering capability to our fleet,” NNS President Kari Wilkinson said. “Proving capabilities through this first sea trial for Massachusetts is an important step in demonstrating this and we are honored to support the mission.”
The boat, the 25th Virginia-class submarine, was christened in May 2023; Massachusetts will be the 12th delivered by NNS.
Photos accompanying this release are available at: http://hii.com/news/hii-completes-initial-sea-trials-of-virginia-class-submarine-massachusetts-ssn-798/.
About HII
HII is a global, all-domain defense provider. HII’s mission is to deliver the world’s most powerful ships and all-domain solutions in service of the nation, creating the advantage for our customers to protect peace and freedom around the world.
As the nation’s largest military shipbuilder, and with a more than 135-year history of advancing U.S. national security, HII delivers critical capabilities extending from ships to unmanned systems, cyber, ISR, AI/ML and synthetic training. Headquartered in Virginia, HII’s workforce is 44,000 strong. For more information, visit:
- HII on the web: https://www.HII.com/
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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/52655e9b-b8c9-473a-a435-394623cf1b38
FAQ
What did HII announce about the Virginia‑class submarine Massachusetts (SSN 798) on Oct. 7, 2025?
What tests were performed during Massachusetts (SSN 798) initial sea trials?
How does Massachusetts (SSN 798) fit into the Virginia‑class production run for HII?
Has HII delivered Massachusetts (SSN 798) to the U.S. Navy after the Oct. 7, 2025 sea trials?
When was Massachusetts (SSN 798) christened and who led the sea trial effort?
