Future Island-Island Impact Cards: Rathlin Wool Rope

Challenge
Polypropylene ropes contribute significantly to marine contamination, shedding microplastics through wear and degradation. These particles persist in ocean ecosystems, harming marine life and entering the food chain. As synthetic materials, they do not biodegrade, leading to long-term pollution and raising urgent concerns about sustainability in maritime industries and practices.
Approach
The research employs a practice-led methodology, combining material testing, environmental analysis, and design innovation. It includes lab-based textile strength and durability trials, field testing in marine environments, and iterative prototyping. Collaborative engagement with fishers and maritime users ensures contextual relevance, while lifecycle assessment evaluates environmental impact and biodegradability.
Outcomes
Outputs include prototypes of 6–16 mm wool ropes made from home-grown Rathlin Blackface wool, performance data, and field trial reports. Outcomes demonstrate wool’s potential as a sustainable alternative to synthetic ropes, supporting local wool economies, reducing marine microplastic pollution, and informing policy and industry on biodegradable rope innovation.
Learnings
Key learnings include the potential of Rathlin wool as a biodegradable alternative that eliminates microplastic release in kelp farming. Insights reveal the need for improved treatments to enhance water resistance and durability, while highlighting the value of local, renewable resources in supporting circular design, ecosystem health, and sustainable aquaculture practices.
Impact
The project promotes sustainable aquaculture practices by showcasing wool as an eco-friendly alternative to plastic ropes in kelp farming, reducing microplastic pollution. Collaborating with farmers, agencies, and industry, it shares findings through workshops and publications, encouraging biodegradable material use, informing policy, and supporting a shift toward circular, regenerative marine practices.