Page 37: of Maritime Reporter Magazine (April 2026)

A SIGNAL TO THE FUEL SUPPLY CHAIN

Horizon X does not assume hydrogen infrastructure will ap- pear overnight. It does something arguably more important: it commits to a vessel architecture that can absorb hydrogen when ports are ready. For maritime fuel suppliers, the mes- sage is clear. Demand for hydrogen bunkering will not origi- nate from speculative small craft or isolated pilot projects. It will come from large, high-capacity vessels operating on ? xed routes with predictable schedules. That predictability — daily calls, de? ned volumes, stable service life — makes ferry op- erators ideal early adopters of new fuels. If ports align invest- ment with such operators, the hydrogen supply chain can scale in measured, commercially grounded steps.

Visit us at

A FUTURE-FUELS BLUEPRINT

OTC 2026

Horizon X is not simply a fast catamaran. It is a strategic

Booth # 2734 3030 E. Pershing St.

bridge between LNG-era decarbonization and a hydrogen- capable future. The vessel maintains timetable discipline,

Appleton, WI 54911 USA preserves operational reliability and introduces a propulsion [email protected] architecture that avoids technological dead ends.

For ports, fuel suppliers and maritime stakeholders, the www.appletonmarine.com takeaway is straightforward: alternative-fuel vessels are no

Phone: (920) 738-5432 longer theoretical. They are entering construction.

The question now shifts from whether ships can burn hy-

Manufactured in the USA drogen to whether ports can supply it.

Gotland Horizon X suggests the clock is ticking.

From Deployment to Identi? cationFrom Deployment to Identi? cation

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By the Numbers: Gotland Horizon X

One Simple Subsea SolutionOne Simple Subsea Solution

Type: High-speed Ro-Pax catamaran, multi-fuel, hydrogen-ready

Length: 130 meters

Beam: 30.5 meters 18,300 Gross tonnage:

Speed: 30 knots

Capacity: 1,500 passengers and 400 cars

Crossing: ~140 km / 80 nm, ~3 hours

Power into waterjets: about 36 MW (interview) / 36.4

MW (technical paper)

Builder / contract: Order placed February 2025 with Austal

Delivery / entry into service: Moberg cites summer 2028 delivery; the technical paper targets entry into service in 2029 2 x Siemens Energy SGT-400 gas turbines (one per hull),

Busch Marine Inc.

13 MW each (guaranteed at 10–20°C ambient) 989-798-4794

Waste heat recovery: once-through steam generator www.BuschMarine.com (OTSG), up to 55 bar, 510°C design inlet temp

Explore the Ocean Like Never Before... To 6000M

Steam turbine: 5.3 MW condensing

Total shaft power to waterjets: ~36–36.4 MW

Overall fuel ef? ciency: close to 50%

Your turnkey answer for

Drive concept: gas turbines drive steerable waterjets; subsea mission success.

steam turbines drive booster waterjets (mechanical drive via gearboxes)

Insights for Naval ISR, Critical

Electrical supply: 1 MW PTI/PTO on main gearboxes + BESS

Minerals, Offshore Exploration + auxiliary gensets; shore connection for cold lay-up

Booth T806

Emissions: Tier III NOx compliance (<2 g/kWh E2/E3)

With AI/ML Enhanced without SCR; methane slip expected <0.014 g/kWh (50–100% MCR)

Underwater Hyperspectral Imaging

Future fuel pathway: retro? t combustor for 100% hydrogen capability; blends supported

Benthic Spectral Inc.

269-806-5245 www.BenthicSpectral.com

Sonar Tells You Where Something Is. Hyperspectral Tells You What It Is.

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