About the project
We played a key role in environmental surveys for an offshore cable project in the Ofotfjorden region of Norway, ensuring compliance with environmental regulations while minimising marine impacts.
The survey aimed to identify and mitigate environmental impacts along a proposed subsea cable route, particularly in ecologically sensitive areas. Data collected supported planning efforts to reduce habitat disturbance, including Vulnerable Marine Ecosystems (VMEs) such as cold-water coral reefs, sponge aggregations, and sea pen communities.
Survey scope and methodology
Our involvement included:
- Geophysical data interpretation – reviewing multibeam echosounder, side scan sonar, and sub-bottom profiler data to map the seabed.
- Benthic habitat mapping – collaborating with ROV pilots to capture seabed imagery which helped classify habitats and confirm VME locations.
Key findings and environmental consideration
The survey identified:
- Cold-water coral reefs – crucial biogenic reef structures.
- Coral gardens – supporting diverse benthic life.
- Deep-sea sponge aggregations – vital for ecosystem functions.
- Sea pen and burrowing megafauna communities – OSPAR-listed habitats requiring protection.
These insights will guide project planning to minimise ecological impact through careful route selection and mitigation. Our expertise ensures high-quality marine assessments that balance infrastructure needs with environmental responsibility. By leveraging advanced survey techniques, we continue to support sustainable marine conservation while facilitating offshore development.
