The US Navy has declared the Virginia-class attack submarine USS Massachusetts ready for fleet tasking after completing shakedown trials, waiving the boat’s planned post-shakedown availability because of its material condition and combat readiness.
The U.S. Navy announced the decision on 17 August, saying the submarine had completed extensive testing and evaluation following delivery and would move directly into fleet availability rather than entering the maintenance period normally associated with a newly commissioned submarine.
USS Massachusetts, hull number SSN 798, was delivered by Newport News Shipbuilding on 21 November 2025 following sea trials and commissioned in Boston on 28 March 2026.
The Navy said the decision to waive the post-shakedown availability was based on the condition of the submarine during trials and the requirement to make the boat available for operational tasking.
Chief of Naval Operations Admiral Daryl Caudle said in the U.S. Navy release: “USS Massachusetts is ready to fight, and that is exactly where we need her, in the hands of our Sailors and available to the Fleet.”
He added: “Waiving this availability reflects the exceptional condition of the ship and our determination to deliver combat-ready capability faster. It also allows our shipbuilding workforce to focus its talent and capacity where we need it most, building the next generation of submarines our nation requires.”
A post-shakedown availability normally follows the initial period of operations for a new warship or submarine, allowing the Navy and shipbuilder to address defects identified during trials, complete outstanding work and incorporate alterations before the vessel enters routine fleet service. In the case of Massachusetts, the Navy said the submarine met and exceeded the construction and safety standards required during its trials and subsequent shakedown period.
Vice Admiral Rob Gaucher, Director of Submarine Programs, said the decision represented a deliberate departure from the normal process. He said: “Waiving a submarine’s post-shakedown availability is an example of driving efficiency, innovation and speed in shipbuilding.”
Gaucher added: “While it is a calculated risk, we do it without ever compromising the safety of our sailors or the quality of our submarines. By getting this boat into the fight we can continue to maintain an absolute advantage in the undersea domain.”
USS Massachusetts is the seventh Block IV Virginia-class submarine. It was constructed under the long-running teaming arrangement between General Dynamics Electric Boat and HII’s Newport News Shipbuilding. The Block IV boats incorporate design and maintenance changes intended to reduce major maintenance periods over their service lives and increase the amount of time available for deployments compared with earlier members of the class. Virginia-class submarines are nuclear-powered fast attack boats designed for anti-submarine warfare, anti-surface warfare, strike operations, intelligence collection and special operations support.
Vice Admiral Rick Seif, Commander, Submarine Forces, said in the release: “Massachusetts brings unmatched stealth and lethality to the undersea battle force.”He added: “This decision will immediately add combat readiness and capacity to ensure our nation’s ability to dominate and maintain undersea superiority.”
The U.S. Navy’s decision also avoids placing another newly delivered submarine into a shipyard availability at a time when the US submarine industrial base is supporting construction of additional Virginia-class boats alongside Columbia-class ballistic missile submarines and maintenance of the existing fleet.
USS Massachusetts is the fifth US Navy vessel to carry the name and entered service as the latest addition to the Navy’s fast-attack submarine force. With the shakedown period complete and the planned post-shakedown availability waived, the submarine is now available for operational tasking by the fleet.
We should be doing the same, also rush through T26 and T31 trials under wartime conditions.
It’s hard to buy the MoD story of we are in a state of near war when we have five submarines sitting alongside and everyone seems to be sitting on their arses about getting new warships into the fleet.
Agreed in principle, but not at the expense of reliability and safety. We need more ships, we need them to be built faster, and we need them to be available and in use.
The issue is lack of spare parts.
You can rush all you like but you cannot get your spanners on parts that don’t exist.
I just don’t believe a lack of spare parts is causing the SSN’s to be laid up and no one has ever shown me anything that states it is the case.
Lack of spares and lack of dry docks are the issues.
Can kicking mentality colliding hard with engineering reality.
As with T23 it was an understood curve that everyone wished away.
Equally nobody wanted to understand the curve of bringing all T45s back with project Napier. The disgrace being that it even lagged behind T23 exists partly because the T31 build fairy story was believed or people wanted to believe it as it enabled….the can to be kicked down the road….
I agree on lack of dry-docks being the issue.
It’s the phony war Jim. Let’s hope it goes better when the real thing breaks out eh.
The hope for America is that this isn’t a panic measure due to the navy being badly over stretched – the program is there for a reason, bypassing it doesn’t seem like a good idea…
Well I guess it fits in with Hegseth demanding his military showing that they are real male hormone infused risk takers. Geez he would have them in rubber dinghies if it was his choice.
When something sounds too good to be true, it usually is. A submarine emerging from a shakedown cruise in such a condition that no rectification work is deemed necessary sounds like a fairy tale to me. I don’t envy the sailors serving on this boat.
Mind you I do like the way that Trump got his way so that it looks like a tasty 40 gun wooden frigate. The yellow peril won’t see it coming even as it surfaces and gives them a sneaky broadside. Mind you judging by its for-mast it’s not entirely ready to join the fleet yet.
Actually he’s already complained about it that mast in the middle needs to be moved further forward.
🫡🇺🇸
😂
Surprised he doesn’t want it converted to steam. 😂😂😂
Scuttlebutt has it that the next boat is supposed to look like a WW2 era aircraft carrier, boats resmbling battleships are being discussed. All new boats are to be steam powered.