TYKUN H1: Italy’s first hydrogen day‑tender ready for series construction

MED Group has put Italy’s first fully engineered hydrogen day-tender into series-construction readiness, a development that pushes alternative fuels from concept into practical use for owners and yards. The TYKUN H1 is a 12-metre hydrogen-powered day-tender using a fuel-cell range-extender architecture drawn from technology used in America’s Cup hydrogen chase boats, and MED Group says the design keeps deck usability intact while packaging hydrogen tanks, ventilation and battery and fuel-cell systems below decks.

The H1 is designed for electric cruising with rapid refuelling and quiet running at speeds up to approximately 35 knots, aiming to deliver tender performance on par with conventional petrol or diesel launches while reducing local emissions and vibration. MED Group reported a full prototype build and delivery timeline of 8 to 10 months, putting a working example into owners’ hands on a realistic timescale for trials and fleet evaluation.

Technical choices drove the layout. Tank and ventilation arrangements, together with battery and fuel-cell packaging, were prioritised to avoid sacrificing cockpit and deck space that owners expect from a practical day-tender. The use of a fuel-cell as a range-extender means the H1 relies on a battery-first profile for short trips and electric manoeuvring, with hydrogen refills restoring range for longer transits or repeated runs from a mothership.

For catamaran owners, yards and support-boat operators, the TYKUN H1 is directly relevant even though it is not a catamaran hull. Owners who run tender fleets, chase boats, crew transfer launches or event support craft will find the H1’s configuration informative when planning hybrid propulsion options for multihulls. The emphasis on retaining usable deck area addresses a common pain point for catamaran owners who need room for davits, boarding ladders, fuel and water handling, and stowage.

Industry momentum toward hydrogen and fuel-cell systems is moving beyond prototypes toward repeatable construction, and the H1 provides a case study in packaging and operational trade-offs. If MED Group moves into series production, yards servicing catamarans will need to consider new refuelling logistics, ventilation routines and training for fuel-cell systems alongside traditional outboard and diesel knowledge.

Expect the next steps to be operational trials and real-world testing of refuelling workflows and maintenance cycles. For catamaran owners planning replacements or upgrades to their support craft, the TYKUN H1 signals that hydrogen-powered tenders are arriving as a practical option rather than a distant experiment.