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Hydrogen-powered EO docks in Cape Town, EO II cargo ship in the works

The EO

The EO II

12th June 2023

By: Irma Venter

Creamer Media Senior Deputy Editor

     

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The zero-emission, green-energy-powered Energy Observer (EO) has docked in Cape Town for a visit of just more than a week.

The vessel, which acts as an on-the-water laboratory able to test various forms of environmentally friendly energy, is covered in 202 m2 of solar panels. 

It also has two small sails, built to minimise shade on the solar-panel-covered deck.

The EO’s other main energy source is hydrogen, with the vessel able to produce hydrogen onboard from seawater.

In order to propel the ship with the hydrogen – especially at night – the EO utilises fuel cells that have been adapted from the Toyota Mirai fuel-cell sedan.

Toyota is also a technology partner in the EO project, along with industrial gas specialist Air Liquide.

The chemical process to create electricity from seawater also produces hot water and heat for the crew’s use, explains EO technical director Didier Bouix.

“The vessel is completely autonomous in terms of energy.”

The France-based EO, acting as an advocate for the expanded implementation of green power worldwide, has already sailed more than 50 000 nautical miles since 2017, with Cape Town its eightieth port-of-call.

The EO’s journey is scheduled to come to an end next year.

It is envisioned that the EO’s successor, the EO II, will use liquid hydrogen, as opposed to hydrogen gas.

This is because the EO II, at 150 m long and 24 m wide, will be a cargo vessel able to carry 1 100 containers. (In contrast to this, the much smaller EO has a 31-m repurposed catamaran as its base, with its functioning more recreational in nature.)

“When we require a lot of energy, like a big ship, we want to use liquid hydrogen, as this is more efficient when powering large vessels,” notes Bouix.

It is hoped that construction of the EO II will start next year, says EO captain and founder Victorien Erussard.

“The EO II will be the world’s lowest-carbon cargo ship.”

As a former merchant navy officer, Erussard says he has witnessed firsthand the damage caused by the global fleet of tankers, bulk carriers, ferries and cruise ships to the marine ecosystem.

He says there are roughly 100 000 merchant vessels in the world, carrying 10.7-billion tons of freight year. 

Most of these vessels operate using heavy fuel oil, which has an extremely negative ecological footprint.

This is especially problematic as it is envisioned that maritime traffic could quadruple by 2050.

 

Edited by Creamer Media Reporter

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