A 155-pound drone submarine that two people can carry and toss off the edge of a dock dives 1,000 feet and works 30-hour missions hunting sea mines, and the Navy just placed its biggest order of them yet, with options that run the fleet to 200 vehicles
The U.S. Navy awarded HII a $123.4 million contract for 30-hour, 1,000-foot diving Lionfish underwater drones, with options for up to 200 vehicles. Deliveries will continue through December 2027. HII expanded its manufacturing facility in Pocasset, Massachusetts, ahead of the order.
How this was made

The 30-second read
Why it matters
The award expands HII's defense backlog and may lift its stock on earnings expectations.
Market read
New multi‑hundred‑million defense contract likely supports HII's near‑term stock performance.
What to watch
Potential cost overruns or integration challenges could affect profitability.
Background
Fiscal year‑end spending spurred a last‑minute Navy contract for HII's REMUS 300 drones.
Ticker impact
The Navy awarded HII a $123.4 million contract for Lionfish underwater drones, the largest order in the program.
likely upward pressure as investors price in the new contract revenue
Large defense contract disclosed for the first time; HII's defense segment is revenue‑sensitive to such awards.
Market effects
Boosts outlook for defense contractors and underwater autonomous systems sector.
Positive for U.S. defense industry investors.
Limited to defense and maritime technology markets.
Counterpoint
If the Navy delays deliveries, the contract may not translate into near‑term earnings.
Key entities
- CompanyHuntington Ingalls Industries
U.S. shipbuilder and defense contractor receiving the contract.
- GovernmentU.S. Navy
Buyer of the Lionfish underwater drones.




