Mare Liberum
Miami, FL · Invests in US · Website
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🔒 $•• – $••Thesis
The future of global stability is decided at sea. We invest at the intersection of critical technologies and the maritime domain — autonomous systems, electronic warfare, maritime domain awareness, and sovereign AI infrastructure — to ensure American and allied maritime dominance.
Likely not a fit for
Not generalist defense; no consumer tech, pure commercial software without defense application, or non-maritime-domain investments.
How they invest
- Warm intro
- Preferred
- Involvement
- Takes a board seat
- Fund status
- Actively deploying
- Decision process
- Partnership vote
Partners & team
5 contacts on file
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Saronic Technologies is a defense technology company specializing in autonomous surface vessels for naval and maritime forces, enhancing awareness, reach, and survivability.
REGENT Craft develops and manufactures all-electric Seaglider™ vessels for fast, safe coastal transportation with zero emissions, combining the speed of an aircraft with the convenience of a boat.
Epirus is dedicated to overcoming the asymmetric challenges inherent to the future of national security, utilizing advanced technologies like high-power microwave systems for electronic warfare and air domain awareness.
Windward is the leading Maritime AI™ company delivering mission-grade, multi-source intelligence for all maritime-based operations. By fusing AIS data, remote sensing signals, proprietary AI models, and Generative AI, Windward provides a 360° view of global maritime activity so defense and intelligence agencies, law enforcement, and commercial leaders can anticipate threats, protect critical assets, and stay in control at sea.
Stealth is a venture studio and incubator focused on AI-driven innovation, building and launching new companies from scratch. It operates in stealth mode to avoid public attention. Stealth also offers a curriculum to train entrepreneurs.
Recent activity
- Apr 2026
Saronic Technologies
Series D · Participated
- Apr 2026
REGENT Craft
Growth · Participated
- Apr 2026
Epirus
Growth · Participated
- Apr 2026
Windward
Growth · Participated
Mare Liberum in the news
Axios
Energy and climate deals for the week of Aug. 24
9 days ago
Crunchbase News
The Week’s 10 Biggest Funding Rounds: AI Tools And Assistants Lead Sparser Lineup Of Megadeals
9 days ago
AeroTime
REGENT closes $240 million Series B round from defense-focused investors
10 days ago
Tectonic Defense
REGENT Craft Raises $240M Series B
11 days ago
Dealroom
REGENT lands $240M Series B to scale all-electric Seagliders
11 days ago
bizjournals.com
Region’s industrial brokers eye defense opportunities
1 month ago
Refresh Miami
Inside MOBY Robotics, the Miami startup rethinking how we get critical minerals
2 months ago
TradeWinds News
Investment firm works to deploy Trump administration cash to reshape US maritime
3 months ago
Dealroom
Pentagon backs maritime tech VC Mare Liberum with $150M loan
4 months ago
The Business Journals
Pentagon, SBA commit $150 million to maritime defense tech investment fund
6 months ago
Refresh Miami
Mare Liberum raises fund to back the next era of maritime tech
6 months ago
Splash247
Mare Liberum launches $150m maritime tech fund
6 months ago
Fortune
Anthropic’s investors are not on the same page in Pentagon fight
6 months ago
Ocean News & Technology
Mare Liberum Announces Formation Of Fund To Invest In Maritime Dominance
6 months ago
Smart Maritime Network
Mare Liberum announces $150m fund to invest in maritime technology
6 months ago
Yahoo Finance
Exclusive: The Pentagon is committing $150M to a maritime-tech VC fund and appears to be ramping up venture deals
6 months ago
Fortune
Exclusive: The Pentagon is committing $150M to a maritime-tech VC fund and appears to be ramping up venture deals
6 months ago
Defense Daily
Venture Firm Focused On Dual Use Maritime Companies Gets $150 Million DoD Loan Backing
6 months ago
PR Newswire
Mare Liberum Announces Formation of Fund to Invest in Maritime Dominance
6 months ago
The Seattle Times
Private expedition to dive into wreck of M/S Estonia ferry
Sep 2021
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Research briefRead more
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