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A new report by the Potsdam Institute for Climate Impact Research shows that seven out of nine planetary boundaries have been exceeded. Ocean acidification is now one of these areas of concern: this threatens marine life. This has serious consequences for the entire planetary system.
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Ammonia, the dubious promise
Ammonia contains no carbon and is being considered as an alternative fuel for the shipping industry. However, ammonia would only be 90 per cent climate-neutral if it were produced from green hydrogen. Yet there is not enough green electricity available for its production as quickly as is needed.
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The Odyssey of the Ecoliner
Designed as a modern sailing cargo ship, the Ecoliner was developed in the first half of the 2010s. Companies such as Fairtransport in the Netherlands and Sailing Cargo Schifffahrtsbeteiligungs GmbH in Hamburg tried in vain to build the ship. At one point, it was even discussed as a car transporter for VW. Now Greenpeace is using the concept for its new flagship, and the Veer company in the Bahamas is working on the construction of a container ship.
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Nuclear ships won't save the climate
The shipping industry is under pressure. Even though the advancing climate crisis is not a high priority on land, measures such as the EU's emissions trading system and fuel measures are making greenhouse gas emissions more expensive at sea. However, decarbonized fuels are not available in sufficient quantities. As a result, nuclear technology, which was shelved after a few attempts at civilian ship propulsion, is back in the spotlight.
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Safety: The difference between regulations and practice
The safety regulations issued by the International Maritime Organization (IMO) weigh over a kilo in printed form. However, crews that have been reduced to a minimum are often literally exhausted to the point of collapse. This affects both operations and technical monitoring on board. Undetected defects can have catastrophic consequences. Even the most detailed regulations are of little use in such cases.
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Indigenous knowledge for rewarding climate investments
Shortly before Christmas 2025, the UN Environment Programme (UNEP) published its seventh report, Global Environment Outlook 7 (GEO–7). In it, the UN organization emphasizes the importance of investing in the environment for future economic gains and sustainable development. This requires a fundamental transformation in which indigenous knowledge plays a crucial role.
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Avontuur – Adventure on many levels
The “Avontuur” (Dutch for “adventure”) is one of the few ships that already transports cargo under sail today. “The Avontuur should primarily be seen as food for thought,” says Captain Cornelius Bockermann. “By returning to a millennia-old, sustainable, proven propulsion system, namely sails, it stands not primarily as a symbol of a necessary technological new beginning, but in particular as a symbol of a necessary change of heart in society.”
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Just “romantic” or criticism of productivity?
There is a difference in efficiency of several thousand times between traditional sailing freighters and modern container giants. However, this seemingly ‘outdated’ craftsmanship is not due to ‘romanticism’ or nostalgia. Rather, it contains a critique of high industrial productivity, which is only possible through the use of fossil fuels – with the corresponding climate consequences.
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Between sufficiency and capitalism
The market economy is a human creation. The planet, on the other hand, has its limits; we cannot influence the laws of nature. This forces us to adopt a culture of sufficiency and raises questions. Isidor Wallimann, a retired social scientist, set out some of these questions as early as 1995 at the end of a lengthy article.
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It's about more than just greenhouse gases
Can the cargo sailing movement make shipping climate neutral? Or even solve the climate problem? That would be nice! But a movement of a few hundred activists cannot achieve what powerful corporations want to block and what legions of politicians have failed to do so far. That is why people and mobilisation are crucial for building pressure from civil society.
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