The superyacht industry, which has seen rapid growth during the pandemic, is under increased scrutiny from climate campaigners due to its outsized environmental impact.
A superyacht can produce up to 7,020 tonnes of CO2 a year and the emissions of the 300 largest superyachts in use is greater than Burundi's 13 million people.
Despite this, seemingly every new superyacht is marketed as a step forward for sustainability, giving rise to accusations of greenwashing.
Efficiency remains a significant issue, and yacht designers have prioritised using narrower shapes that allow vessels to cut more smoothly through the water, or use aluminium to build a lighter hull.
Fuel is the major issue with over 90% of a superyacht's global warming potential contribution coming from burning fossil fuels.
Hybrid engines and green methanol produced from agricultural or municipal waste are becoming more common, while some economic EU funding will be used for the first bi-fuel superyacht, running on green methanol and diesel, to be launched by 2027.
In addition, the industry is experimenting with hydrogen and fuel cell systems, with the first hydrogen-powered superyacht being launched by Feadship in May.
Reducing the environmental impact of superyachts is currently a matter of conscience and organisations such as the Water Revolution Foundation, established in 2018, are attempting to accelerate change.
Mario Biferali has attempted to explore how wealthy clients' desire for enormous ships could be married with a less resource-intensive approach.
Along with enhanced regulation, conscious moral duty is needed to reduce the environmental impact of the superyacht industry which some argue to be unjustifiable in today's world.