The prototype looks like a small airplane, but it's designed to be certified as a boat. For REGENT Craft, that regulatory distinction is the entire wedge. The North Kingstown-based startup is building all-electric "seagliders," wing-in-ground-effect craft that fly a few meters above the water's surface. By operating over water and using existing dock infrastructure, the company aims to avoid the multi-year, billion-dollar gauntlet of full FAA aircraft certification, instead seeking approval through maritime pathways like the U.S. Coast Guard [NAVAIR OSBP]. It's a technical and regulatory bet with a massive payoff: an order book the company values at over $9 billion from airlines and ferry operators [REGENT].
The Technical Wedge: Three Regimes, One Goal
A seaglider isn't a plane or a boat, but a hybrid that transitions between three operational modes. It starts hull-borne, moving like a conventional vessel. It then lifts onto hydrofoils. Finally, it enters wing-in-ground-effect flight, where aerodynamic lift is augmented by the cushion of air trapped between the wing and the water's surface [NAVAIR OSBP]. This allows for higher speeds,up to 180 miles per hour,while remaining within a wingspan of the water, a key maritime regulatory boundary. The company's technical claims hinge on this phased operation. Using current battery technology, REGENT targets routes up to 180 miles. With next-generation batteries, that range could extend to 400 miles [REGENT]. The vehicle is designed to dock at standard maritime piers, bypassing the need for airport runways and terminals. For co-founders Billy Thalheimer and Michael Klinker, both MIT-educated ex-Boeing engineers, the design is a deliberate attempt to fit a new vehicle into an old, established regulatory box [Y Combinator].
Traction: From Airlines to the Marine Corps
REGENT's strategy to sell to asset-heavy operators has generated significant declared interest. The company's order book, while composed of non-binding memoranda of understanding, includes over 600 seagliders from customers like Japan Airlines, Hawaiian Airlines, and ferry operators [REGENT]. This commercial pipeline is matched by a growing defense business. The U.S. Marine Corps Warfighting Lab has an ongoing contract with REGENT, recently practicing rescue missions with a prototype and securing a second-phase agreement worth an estimated $10 million [AINonline, 2025-11-17] [REGENT, 2025-03-26]. The company has raised over $100 million to fund its path to production, with backing from Founders Fund, Lockheed Martin, and Point72 Ventures, among others [Y Combinator]. This capital is fueling a tangible manufacturing buildout. A 255,000-square-foot facility in North Kingstown, Rhode Island, is slated to open in 2026 for final assembly of the 12-passenger Viceroy model [REGENT].
The Investor and Customer Roster
REGENT's cap table and customer list reveal a strategy of aligning with strategic, deep-pocketed partners from both transportation and defense.
| Entity | Type | Notable Detail |
|---|---|---|
| Japan Airlines | Strategic Investor / Customer | Airline partner for regional coastal routes. |
| Lockheed Martin | Investor | Aerospace and defense manufacturing giant. |
| U.S. Marine Corps | Customer | Contract for prototype development and testing. |
| NEOM Investment Fund | Investor | Led a $60M Series A round in 2022 [Crunchbase]. |
| Hawaiian Airlines | Strategic Investor / Customer | Key target market for inter-island travel. |
The Scale-Up Equation
Moving from prototype to certified production at volume is a different engineering challenge. REGENT's technical breakdown centers on a few critical, unproven transitions.
- Hydrofoil to WIG Transition. The vehicle must reliably enter and exit ground-effect flight in various sea states. Failure here means reverting to slower foil-borne or hull-borne modes, negating the speed advantage.
- Maritime Certification. While simpler than FAA rules, certifying a novel, high-speed vehicle with maritime authorities is still uncharted territory. Any requirement for aviation-style safety systems could erode the cost and timeline advantage.
- Production Economics. The claimed $9 billion order book implies building hundreds of vehicles. The cost to manufacture at that scale, with the required quality for passenger transport, is not yet public. The sober assessment is that the wheels come off if any one of these transitions fails at scale. A hiccup in certification could delay revenue for years. A production flaw in the first dozen vehicles could crater operator confidence. The defense contract provides a valuable revenue bridge and testing ground, but the commercial business requires flawless execution on all three fronts simultaneously.
The Next Twelve Months
All eyes are on Rhode Island. The opening of the manufacturing facility in 2026 is the next hard milestone, shifting the narrative from prototype testing to production readiness [WorkBoat]. Before that, the 2026 test campaign for both the Viceroy passenger craft and the smaller Squire drone will provide crucial performance data [CB Insights]. The company must also convert a meaningful portion of its $9 billion order book into firm purchase agreements. Success on these fronts would position REGENT not as a futuristic concept, but as a legitimate OEM for a new class of vehicle. The bet is that by the time regulators finish asking what it is, REGENT will already be selling it.
Sources
- [REGENT] Company Overview and Product Specifications | https://www.regentcraft.com/
- [NAVAIR OSBP] REGENT Craft Profile | https://www.navair.navy.mil/osbp/node/9766
- [Y Combinator] REGENT Company Profile | https://www.ycombinator.com/companies/regent
- [AINonline, 2025-11-17] U.S. Marine Corps Practices Rescue Missions with REGENT Seaglider | https://www.ainonline.com/aviation-news/defense/2025-11-17/us-marine-corps-practices-rescue-missions-regent-seaglider
- [REGENT, 2025-03-26] REGENT Announces Second Phase Agreement with U.S. Marine Corps | https://www.regentcraft.com/news/regent-announces-second-phase-agreement-with-us-marine-corps
- [Crunchbase] REGENT Funding Rounds | https://www.crunchbase.com/organization/regent
- [WorkBoat] REGENT Manufacturing Facility | https://www.workboat.com/
- [CB Insights] REGENT Test Campaign | https://www.cbinsights.com/
- [Providence Journal, 2024-07-31] REGENT Craft Reports $9B in Preorders | https://www.providencejournal.com/