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Berlin’s 138-year-old passenger vessel gets electric power makeover by Torqeedo

Torqeedo’s Customized Solutions team converted Berlin’s oldest passenger vessel to electric power, saving over 150 litres of diesel per operating hour.

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Berlin’s 138-year-old passenger vessel gets electric power makeover by Torqeedo

Torqeedo, developer and manufacturer of electric and hybrid drives, on Monday (13 May) said owners of Kaiser Friedrich, a passenger vessel steeped in history and built in 1886, refitted the historic 30-metre vessel with a modern, emission-free electric drive system by Torqeedo.

The vessel recently marked its return to service with a ceremonial christening in central Berlin. 

The Kaiser Friedrich, a twin-screw steamship, plied Berlin’s waters for almost 80 years before it was decommissioned in 1967 and converted into offices and residential space. In 1986, the German Museum of Technology purchased the 100-ton boat and restored it to its original appearance. 

For several years, the Kaiser Friedrich once again was in operation with historical city tours until its engines, which used over 150 litres of diesel per hour, made operation both ecologically and economically unviable. The museum reclaimed the boat in 2012 and started the search for Kaiser Friedrich’s next chapter.

In 2022, Volker Marhold and Julius Dahmen, who both have experience converting historic boats to electric propulsion, purchased the Kaiser Friedrich. In close collaboration with Torqeedo’s Customized Solutions team, the conversion to an ultra-efficient electric drive system with twin Deep Blue 50 kW inboard motors and a 400 kWh Deep Blue battery bank was expertly completed by the Tangermünde Shipbuilding and Development Company in Genthin, Germany.

Starting on 13 May, Berliners and visitors to the “Athens on the Spree” can enjoy an eco-friendly city tour on board this legendary passenger vessel. At night, the city’s most famous boat transforms into a floating beer garden during the 3.5-hour Old Berlin Beer Evening.

Dahmen, co-owner of the 138-year-old vessel and operator of Berliner Welle, a company that provides a variety of historic boats for excursions and events, said: “Whisper-quiet, environmentally conscious and free of local emissions, the Kaiser Friedrich will again be available to the people of Berlin. This is the third Berliner Welle excursion boat that we have converted to Torqeedo electric drives, and we look forward to continuing our collaboration.

“The Kaiser Friedrich is a longtime maritime landmark of the city,” said Mr. Marhold. “And now it is also a symbol of transformation towards the mobility of the future. And what a wonderful future for Berlin’s oldest passenger vessel, which can now once again welcome passengers to celebrate life with them while enjoying breathtaking views of our beautiful city.”

“Torqeedo’s electric drive and energy management systems for commercial vessels are transforming the world’s waterways,” said Fabian Bez, CEO of Torqeedo GmbH. 

“Major cities like Berlin are taking measures to reduce boating and shipping’s ecological, health and climate impacts. But it’s not just happening in urban areas: Lake Constance is working toward a holistic decarbonization strategy, and we see similar efforts implemented around the globe.”

“An electrification project of this size and historical significance is an important step forward,” continued Bez. “Commercial vessels of all sizes can be cleaner, quieter, and healthier for our natural and human environments. The technology is here today. It’s time to go electric.”

The historic 150-passenger vessel will enter regular service on 13 May 2024.

 

Photo credit: Torqeedo
Published: 14 May, 2024

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Decarbonisation

Consortium validates grid-independent hydrogen power hub for ports

Consortium demonstrated that large vessels can already be powered at berth using existing hydrogen, battery, fuel cell and electrical technologies integrated into a modular floating system.

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Consortium validates grid-independent hydrogen power hub for ports

ELIRE Maritime and consortium partners on Monday (25 May) announced the successful completion of the UKRI-funded Clean Maritime Demonstrator Competition Round 6 (CMDC6) programme.

CMDC6 is a GBP 1 million (USD 1.3 million) feasibility programme and initiative delivered by Innovate UK in partnership with the UK Shipping Office for Reducing Emissions (UK SHORE), part of the UK Department for Transport.

The partners are Ricardo UK, Schneider Electric, Rux Energy UK, Triton Anchor Europe, OREC (Offshore Renewable Energy Catapult), and the University of Strathclyde. 

The programme successfully validated one of the world’s first fully grid-independent Hydrogen Floating Power Hub systems capable of delivering clean power directly to vessels at berth without requiring traditional shore-side grid infrastructure. 

The consortium demonstrated that large vessels can realistically be powered at berth today using existing hydrogen, battery, fuel cell, and electrical technologies integrated into a modular floating maritime system designed for rapid deployment across global ports.

The solution can now be deployed and would be expected to support the reduction of up to 500,000 tonnes of CO₂ emissions globally over the next decade through a scalable maritime clean energy infrastructure capable of operating independently from constrained port grids.

“Ports are under increasing pressure to decarbonise while facing major infrastructure constraints,” said Luke Jenkinson, Founder and CEO of ELIRE Maritime. 

“The Hydrogen Power Hub proves that ports do not need to wait years for grid upgrades to begin reducing emissions. We have validated a practical, scalable, and deployable system capable of delivering clean power directly where it is needed most.”

The Hydrogen Power Hub establishes a new category of maritime infrastructure by moving energy and power generation as well as storage onto water rather than relying on fixed, land-based systems constrained by grid access, cost, permitting, and land availability.

At full configuration, this particular validated system is capable of delivering 5MW of continuous clean power output directly to vessels at berth, enough to support medium-sized cruise vessels and other large maritime assets requiring both 6.6kV and 11kV shore power connections. This system integrates three modular hexagonal floating platforms with a combined 1,200 sqm footprint, approximately 45MWh of battery energy storage capacity, modular fuel cell systems, hydrogen-powered generation, onboard renewable generation, and advanced grid-forming AC/DC electrical architecture.

The consortium confirmed the platform can deliver approximately 91MWh of energy per week while supporting repeated vessel charging operations without requiring major civil works, land reclamation, or expensive grid reinforcement.

The system uses approximately 7,500 to 8,000kg of hydrogen weekly, stored within modular ISO-compatible low-pressure storage containers integrated directly into the floating infrastructure. The current layout accommodates seven onboard hydrogen tanks, with refuelling operations expected approximately twice weekly, enabling ports to adopt hydrogen incrementally without requiring permanent hydrogen infrastructure during early deployment phases.

Instead of relying on oversized generators, the platform uses modular 1.3MW fuel cells operating continuously throughout the week to gradually charge the onboard batteries before rapidly dispatching energy when vessels arrive at berth.

 

Photo credit: ELIRE Maritime
Published: 26 May, 2026

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Wah Kwong NatPower backs Greater Bay Area zero-carbon shipping initiative

Initiative will focus on deploying electric vessels and establishing shore-side battery swapping and charging infrastructure across key ports in Guangdong province and Hong Kong.

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Wah Kwong NatPower backs Greater Bay Area zero-carbon shipping initiative

Wah Kwong NatPower Marine (WK NatPower), a joint venture between Wah Kwong Maritime Transport and NatPower Marine, on Wednesday (20 May) said it is supporting a new initiative to develop zero-carbon shipping routes across China’s Greater Bay Area, following a recent broader Memorandum of Understanding (MoU) with Guangzhou Port Group.

Under this MoU, WK NatPower will support maritime electrification by advancing the development of shore power infrastructure across Hong Kong, Greater China, and Asia. 

The initiative will focus on deploying electric vessels and establishing shore-side battery swapping and charging infrastructure across key ports in Guangdong province and Hong Kong, supporting the transition toward low-emission shipping operations.

WK NatPower will play a central role in developing a scalable electrification network, supplying clean electricity to vessels both at berth and for propulsion. The project aligns with China’s “dual carbon” targets and reflects broader efforts to integrate energy systems and port infrastructure at scale.

Guangzhou Port, a major international hub, is advancing its green port strategy through expanded shore power deployment and increased use of clean energy. The collaboration aims to establish standardised charging and battery-swapping infrastructure across the Greater Bay Area, enabling the development of integrated zero-carbon shipping corridors.

The partners will also explore the use of alternative marine fuels, including methanol and ammonia, as part of a broader decarbonisation pathway.

“Delivering zero-carbon shipping at scale requires alignment across ports, energy providers and shipping lines,” said Vincent Ni, General Manager of WK NatPower. 

“This initiative represents a significant step toward building the infrastructure needed to support electrified maritime operations across the region.”

WK NatPower is part of a broader strategy to develop a comprehensive maritime electrification infrastructure network across Asia, combining Wah Kwong’s maritime expertise with NatPower Marine’s global energy infrastructure capabilities.

 

Photo credit: Wah Kwong NatPower Marine
Published: 21 May, 2026

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Wah Kwong NatPower and CKS target Hong Kong–Guangdong electric inland shipping

Both will focus on areas including electric vessel construction and technological innovation, charging and battery-swap networks at Guangdong–Hong Kong terminals, among others.

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Wah Kwong NatPower and CKS target Hong Kong–Guangdong electric inland shipping

Wah Kwong NatPower Holdings (Wah Kwong NatPower) on Friday (15 May) said it has recently signed a Memorandum of Understanding (MoU) with Chu Kong Shipping Enterprises (Group) (CKS), a subsidiary of Guangdong Provincial Port & Shipping Group Company Limited. 

The two parties have agreed to establish a cooperative framework with a focus on advancing industries related to the electrification of Hong Kong’s waterborne transport. 

Under the MoU, the two parties will engage in in-depth discussions aligned with the shipping industry’s low-carbon transition, focusing on areas including electric vessel construction and technological innovation, charging and battery-swap networks at Guangdong–Hong Kong terminals, and the overall promotion of water transport electrification in Hong Kong. Both sides will share industry information and jointly explore relevant policy and technical developments.

The MoU was signed by Mr. Vincent Ni, the General Manager of Wah Kwong NatPower. Mr. Ni noted that establishing industry-wide collaborative mechanisms is essential to translating low-carbon transition concepts into tangible outcomes. He stated that water transport electrification is a systemic endeavour that requires close coordination across the entire value chain. 

Wah Kwong NatPower said the cooperation with CKS reflects a shared vision for the development of water transport electrification in Hong Kong and the Greater Bay Area. 

The shipping industry is entering an accelerated phase of green and low-carbon transition. As a leading hub for maritime innovation, the Guangdong–Hong Kong–Macao Greater Bay Area is advancing the deployment of electric vessels alongside the development of supporting infrastructure.

“At the same time, the region is building an interconnected green energy ecosystem, expanding shoreside charging networks and promoting standardisation across charging and battery-swapping systems. This coordinated approach is critical to enabling seamless cross-regional operations and overcoming key energy replenishment challenges,” the company added. 

Together, the parties will deepen collaboration to explore practical, scalable pathways for water transport electrification, aligned with Hong Kong’s specific operating environment and broader industry trends.

Following the agreement, both parties will establish a joint working group and structure collaboration framework to accelerate project development, identify priority opportunities, and bring forward tangible infrastructure solutions.

 

Photo credit: Wah Kwong NatPower
Published: 18 May, 2026

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