Maritime Operations Group (“MOG”) and HD Hyundai Heavy Industries (“HHI”) have signed a Memorandum of Understanding (MoU) establishing a strategic collaboration to accelerate the development, construction, and delivery of modern diesel-electric submarines and undersea technologies for U.S. government and allied missions.
MOG press release
Under the agreement, MOG and HHI will jointly explore opportunities to:
- Design and build diesel-electric submarines optimized for training, RDT&E, and specialized mission support for the US Navy.
- Bring advanced MRO and manufacturing techniques to US shipyards by leveraging Hyundai’s industry leading expertise.
- Establish a streamlined acquisition and certification pathway enabling rapid delivery of commercially owned and operated submarines to the U.S. defense ecosystem.
- Support lifecycle sustainment, including classing, certification, and maintenance planning.
- Coordinate technology integration for U.S. and allied requirements, ensuring compatibility with modern undersea systems and payloads.
This collaboration aligns MOG’s “Submarines-as-a-Service” model with HHI’s globally recognized shipbuilding capability – bringing scale, reliability, and industrial efficiency to a mission set historically constrained by limited availability and legacy production timelines.
About Maritime Operations Group (MOG)
MOG is a U.S.-based undersea technology and operations company pioneering the Submarines-as-a-Service model. MOG develops and operates crewed hybrid diesel-electric submarines that support U.S. Navy training, RDT&E, and specialized mission requirements. MOG’s mission is to expand undersea access, accelerate technology development, and strengthen the U.S. maritime industrial base.
About HD Hyundai Heavy Industries (HHI)
HD Hyundai Heavy Industries is one of the world’s largest and most advanced shipbuilders, with extensive experience designing and constructing naval platforms including diesel-electric submarines, frigates, destroyers, and auxiliary ships. HHI brings unmatched industrial capacity, engineering sophistication, and global delivery track record to maritime defense customers.
