Top 12 Military Sea Drone startups

Updated: Dec 07, 2025
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These companies create sea drones and develop related technologies: underwater communication systems, autonomous navigation algorithms, high-resolution imaging sonars, advanced propulsion systems, AI-powered threat detection technologies.
1
Anduril
Country: USA | Funding: $6.2B
Anduril Industries is a defense product company that builds technology for military agencies and border surveillance. Provider of AI-based surveillance and reconnaissance solutions for the defense sector. It offers an autonomous operational platform based on sensor fusion, machine learning, and mesh networking to monitor and control warfare assets.
2
L3Harris
Country: USA | Funding: $2.3B
L3 Harris is a proven leader in tactical communications, geospatial systems, air traffic management, avionics, and space and intelligence.
3
Saronic Technologies
Country: USA | Funding: $845M
Saronic is building cutting-edge unmanned surface vehicles that enable maritime security and domain awareness by combining best-in-class hardware, software and artificial intelligence into one scalable, fully integrated platform.
4
Kraken Robotics
Country: Canada | Funding: $203.6M
Kraken Robotics develops high speed, actively stabilized Synthetic Aperture Sonar towfish that operates at speeds up to 10 knots.
5
Terradepth
Country: USA | Funding: $30.1M
Terradepth utilizes the most innovative contractor-owned robotics and data management solution to deliver best-in-class ocean data at Petabyte scale in near real-time. We offer maximum force multiplication with our vertically integrated end-to-end solution for defense.
6
Blueye Robotics
Country: Norway | Funding: NOK51M
Blueye aim to limit risk for divers, protect critical infrastructure and investigate possible threats underwater using ROVs.
7
EyeROV
Country: India | Funding: $1.9M
EyeROV develops underwater drone/remotely operated vehicle (ROV) TUNA used for search and recovery, Explosive Ordnance Disposal (EOD), port security, Intelligence, Surveillance, and Reconnaissance (ISR).
8
Sagar Defence Engineering
Country: India
Sagar Defence Engineering provides new innovations and complete Unmanned Marine Vehicles solutions in commercial and defence sector.
9
ecoSUB Robotics
Country: UK
ecoSUB Robotics are designers and manufactures of advanced, small, low cost autonomous underwater vehicles.
10
Eelume
Country: Norway
Eelume develops subsea self-propelled vehicles with autonomous robotic arms whose slender and flexible body can transit over long distances and carry out IMR in confined spaces not accessible by conventional underwater vehicles.
11
Diodon Drone Technology
Country: France
DIODON Drone Technology is a manufacturer of rough-terrain amphibious drones.
12
SEABAT
Country: Denmark
SEABAT is developing a modular full electric maritime hybrid battery concept to substantially reduce the costs of large waterborne battery systems for over 1MWh.
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Bruce Makowsky
Editor: Bruce Makowsky
Bruce Makowsky has covered military, cyber and IT news since 2009, with a focus on U.S. Navy and Marine Corps operations, acquisition programs and budgets. In particular he worked for Inside Defense. Bruce holds a Master of Science degree in journalism from Boston University. Bruce is also an award-winning photographer, renowned for his captivating images that have earned him numerous accolades and widespread recognition in the photography community. You can contact Bruce at makowsky(at)militarystartups(dot)com