Morrelli & Melvin Design & Engineering Inc.

05/21/2026

Lloyd Stevenson Boats hits another one out of the park. This is the second Catalyst to incorporate the updated state of the art foil package, which improves speed, fuel economy, handling, and seakeeping.

Lloyd Stevenson Boats has just launched the latest addition to the Catalyst chase fleet — the 50' Django Shade.

03/09/2026

Morrelli & Melvin, the acclaimed naval architects behind many high-performance boats, lent their design expertise to the Artemis 23’s hull and foil system. Helping make this the smoothest, quietest electric boats yet.

03/09/2026

Way of the future

Morrelli & Melvin, the acclaimed naval architects behind many high-performance boats, lent their design expertise to the Artemis 23’s hull and foil system. Helping make this the smoothest, quietest electric boats yet.

02/25/2026

PB72 – Extreme H2O 2.0
Raw sea trial video reel. The yacht is really living up to expectations: smooth ride, stable foiling, and speeds fully in line with our simulation predictions. Even in freezing temperatures she was comfortably holding a steady 34 knots, both hulls just skimming the water with virtually no heel with the RMFoil deployed.

The Extreme H2O 2.0 // PB72 is a next-generation 72-ft semi-foiling offshore catamaran with full headroom cabin interior. With outboard-lifting RMFoils and a...

02/13/2026

Designed by M&M about ten years ago, the Superfoiler was a bold concept ahead of it's time that proved to be extremely fast and provided the kind of racing spectacle that the founders Bill and Jack Macartney envisioned.

Yachting World has been asking top sailors and marine industry gurus to choose the coolest and most innovative yachts of our times, and professional

01/13/2026

🎥 PB72 / Extreme H2O 2.0 First seatrials video.
Proud of these first seatrials days. Early on, but the yacht is showing great potential with the RMFoils and already tracking with the performance predictions.
Big thanks to for the commissioning effort, for an excellent build. Designed by

01/13/2026

Proud of these first seatrials days. Early on, but the yacht is showing great potential with the RMFoils and already tracking with the performance predictions.
Big thanks to American Magic for the commissioning effort, Persico Marine for an excellent build. Designed by Morrelli & Melvin.

12/06/2025

Another successful collaboration with Schooner Creek Boat Works. We've developed about a dozen custom builds with them and every one has been a success and with a happy customer. These guys have been great to work with.

11/21/2025