A Florida Company 3D-Printed a Drone Boat Hull Using Robotic Arms

The Build

Haddy, a contract manufacturer based in St. Petersburg, Florida, has produced the TF-179 drone boat hull using large-format robotic additive manufacturing. The hull came off the build plate as a single printed component rather than an assembly of molded or machined parts. That single-piece approach removes fasteners, reduces assembly time, and lets the team change geometry between prints without retooling.

The TF-179 is an unmanned surface vessel built for defense applications. It is designed to operate autonomously on the water, carrying sensors and payloads for surveillance and maritime security missions. The hull shape is not trivial: it needs to handle open water, carry a specific payload bay, and integrate mounting points for thrusters and antennas. Printing it as a single part simplifies all of those integration points.

How Robotic 3D Printing Fits

Standard desktop 3D printers have fixed gantries. Large-format robotic arms have no such constraint. Haddy's systems can deposit material at angles and on surfaces that a traditional printer cannot reach. For a boat hull with curves, transoms, and internal rib structures, that flexibility matters. The robot can build up material in one location, move to an overhang, and continue without support material that would otherwise need to be removed later.

The technology also scales differently from traditional boat construction. Once the digital model is finalized, producing a second hull is a matter of running the same robot program again. There is no new plug, no new mold, and no waiting for a composite layup to cure. For low-volume defense production, that speed is significant.

Who Haddy Is Working With

Haddy's robotic printing capability drew the attention of Red Cat Holdings, a Salt Lake City-based defense drone manufacturer. Red Cat's maritime division, Blue Ops, is partnering with Haddy to produce unmanned surface vessels using this method. The collaboration aims to bring large-scale 3D printing into military-grade USV production, replacing traditional composite construction with additive manufacturing for faster iteration and lower per-unit costs at low volumes.

The partnership reflects a broader trend: defense contractors are looking for manufacturing methods that reduce the time between design change and physical delivery. Traditional boat hull production involves tooling lead times measured in months. Robotic additive manufacturing compresses that to days.

The Bigger Picture

3D printing a boat hull still draws attention. What makes it notable here is not the novelty but the logistics. If a military unit needs a specific vessel design and can get it printed locally rather than shipped from a traditional boatyard, the supply chain becomes shorter and less vulnerable. Haddy's work with the TF-179 is an early example of what on-demand marine manufacturing could look like when the digital model is the inventory.

The unmanned surface vessel market is expanding. Several defense companies are investing in USVs for mine countermeasures, harbor security, and intelligence gathering. If additive manufacturing can keep pace with the design iterations those programs require, it could become the standard production method for low-rate, high-variety naval hardware.