Miami has been talking about an "Uber for boats" for years. The idea floats through every waterfront happy hour, every traffic rant on the MacArthur, every tourist daydream staring at the bay: what if you could just tap your phone and order a boat the way you order a car?

While most people kept talking, one founder quietly went and built it.

Meet Theo Arranz, the hospitality-trained yacht pro behind NAVA, a new on-demand water mobility platform that wants to turn Miami's coastline into a real transportation network -- not just a backdrop for drone shots. Think Uber, but on water: you open the app, see nearby boats in real time, choose your ride and book instantly, with typical pickup times in the 5-15 minute window depending on where you are and how dense the fleet is around you.

For a city drowning in traffic and overflowing with boats, NAVA feels less like a novelty and more like a missing piece.

From Paris kitchens to Miami marinas

Theo's route to building a marine mobility company is anything but traditional -- but it makes perfect sense once you follow the waterline. Born in Greenwich, Connecticut, he left the U.S. at five and grew up circling the Atlantic, spending six years in Spain and most of his life in France. He studied culinary arts in Paris, learning hospitality from the inside out: service, timing, logistics, and the unglamorous grind behind a seamless guest experience.

In 2018, he flew into Miami, not as a tech founder, but as crew. He started working on yachts, seeing firsthand how the city's boating culture actually operates: the captains, the marinas, the owners, the last-minute charters, the long days on the water. Those years gave him something most founders don't have -- lived experience of the industry he's trying to reinvent.

When the pandemic hit, Theo and his brother leaned back on food, launching a cloud-kitchen restaurant concept in 2020. It was another crash course in operations and marketplaces: aggregators, delivery apps, margins, and how to build an experience inside someone else's platform.

After that, he launched his own yacht brokering business, sitting between owners and renters and seeing how broken the boat rental experience really is. Everything took too long. Guests had to DM brokers, wait for quotes, wire deposits, sign PDFs, and hope the boat and captain actually showed up. Availability was opaque. Pricing was a puzzle. For a city as fast as Miami, the process felt stuck in another decade.

That friction became the opportunity.

What NAVA actually does

NAVA is a mobile app that lets users book a boat ride the same way they would call a car. Open the app, see available boats around you in real time, select the one you want, and book it instantly. Pickup times typically fall in the 5-15 minute range depending on your location and how many boats are nearby.

The platform is built for both locals and visitors. You can use it for a quick commute across the bay, a sunset cruise, or a ride from the mainland to the islands. NAVA handles the pricing, the booking, and the coordination so users never have to negotiate or chase down a captain.

On the captain side, NAVA is building a network of licensed, vetted operators who can list their boats and accept rides through the app. Captains set their own availability and NAVA takes care of the rest -- matching them with riders, processing payments, and handling the logistics that used to require a broker, a phone tree, and a lot of patience.

Why Miami, why now

Miami is uniquely positioned for something like NAVA. The city has more than 100,000 registered boats, thousands of miles of navigable waterways, and some of the worst traffic congestion in the country. Yet the water remains almost entirely unused as a commuting option. Most boats sit idle 95% of the time while their owners are stuck on I-95.

The timing matters too. Miami is going through a population boom, with new developments reshaping neighborhoods from Edgewater to Coconut Grove. The roads are not keeping up. Meanwhile, the city is spending billions on transit projects that won't be finished for years. NAVA is betting that the water can fill the gap faster than concrete ever could.

The bigger picture

Theo does not see NAVA as just another boat rental app. He sees it as the beginning of a water-based transportation network that could reshape how coastal cities move people. The long-term vision includes fixed routes, commuter passes, integration with public transit systems, and eventually expansion to other waterfront cities around the world.

Right now, the focus is on getting the core experience right in Miami. Building the fleet, onboarding captains, refining the technology, and proving that people will actually use the water to get around when the option is fast, affordable, and easy.

What's next for NAVA

NAVA is currently in its pre-launch phase, building out the app, onboarding early captains, and lining up launch partners across Miami's waterfront. The team is actively raising a pre-seed round to accelerate development and expand the fleet ahead of a public launch later this year.

If you are a boat captain interested in joining the NAVA network, or an investor looking at the future of urban water mobility, you can reach the team directly through their website or connect with Theo on LinkedIn.

Miami has been waiting for someone to build this. Theo Arranz decided to stop waiting.