Mare Liberum Secures Up to $150M in Pentagon-Backed Capital to Invest in Maritime Defense Technologies

Out on the water, the map of power, trade, and technology is being quietly redrawn. Not the kind of shift that dominates cable news, but the kind that reshapes systems from underneath. Oceans move 90% of global commerce, yet the tech stack protecting and powering those routes has been due for an upgrade. That gap between what the ocean is worth and the tools we use to manage it is exactly where Mare Liberum is placing a very calculated bet.

This week Mare Liberum announced the formation of its second fund, backed by a green light from the U.S. Small Business Administration’s Small Business Investment Company Critical Technologies program and the Pentagon’s Office of Strategic Capital. The approval unlocks up to $150M in low cost government backed leverage. Not a splashy consumer headline. But if you understand the mechanics of venture, defense, and infrastructure, you know this is serious fuel for a very specific kind of builder.

The crew steering the ship knows these waters well. Erik Bethel, General Partner and co founder of Mare Liberum, has spent years at the intersection of capital markets and national security. Alongside Erik Bethel are General Partners Marc Baliotti, Admiral Lorin Selby, and Vrushank Vora. Different backgrounds, same through line. Deep operational and financial experience tied to one thesis. The oceans are critical infrastructure and the technology stack around them is about to evolve fast.

Look at where the fund intends to sail. Autonomous maritime platforms. Maritime domain awareness software. Resilient logistics systems. Counter UAS capabilities. The kinds of technologies that make shipping lanes smarter, fleets safer, and supply chains harder to break. When trade routes are the arteries of the global economy, tools that monitor, protect, and optimize those routes become strategic assets.

The structure itself tells a story. The SBICCT framework exists to channel private capital into technologies that matter for national resilience. That means the founders building in maritime autonomy, robotics, AI driven ocean intelligence, and advanced manufacturing suddenly have a capital partner that speaks both venture and strategy. That combination tends to accelerate things.

And the timing is not accidental. Global supply chains have been stress tested. Naval strategy is evolving. Energy, shipping, and security all intersect on the same blue grid that covers most of the planet. When capital, policy, and engineering all start pointing in the same direction, new markets tend to surface quickly.

Raising capital is one thing. Aiming it directly at the infrastructure of global trade and maritime security is another. The ocean has always been the world’s biggest highway. Now the technology layer running that highway is finally catching up.