Seabird, originally Margaret Ann II, was built in 1969 by shipwrights Weatherhead and Blackie in Port Seton, Scotland. Designed to withstand the harsh conditions of the North Sea, she was constructed with solid oak frames and an oak keel. The planking was done using locally grown European larch, a choice that underscores the vessel's deep connection to its Scottish origins. Measuring approximately 17 meters in length (56 feet) with a displacement of around 40 tons, Seabird's design and construction materials were selected for durability and performance in rough sea conditions.

Originally serving as a herring ring netter, Seabird was part of the vital fishing industry in Scotland, contributing to the local economy and way of life. Over the years, she transitioned to a general-purpose fishing vessel, reflecting the changing needs and technologies of the fishing industry. This work continued until late 2018, marking nearly five decades of service in the maritime sector.

In October 2023, Seabird underwent a significant restoration project aimed at preserving her historical integrity while updating her for a new role. The restoration focused on the hull, decks, and wheelhouse, including re-caulking, painting, and installing modern safety and environmental systems. Notably, the project also involved the integration of sustainable propulsion systems, such as wind-assisted propulsion and an electric drive system, highlighting a commitment to environmental stewardship

The refurbishment and operational planning of Seabird are part of a broader strategy to leverage Northern Ireland's maritime heritage for environmental and educational purposes. By integrating sustainable technologies, safety enhancements, and educational outreach initiatives, Citizen Sea aims to inspire a new generation of marine conservationists and promote the well-being of volunteers and the local community. Seabird's journey from a hardworking fishing vessel to a beacon of marine conservation and education exemplifies the potential for traditional maritime assets to contribute to contemporary environmental and societal goals.

Seabird's transformation into a research education vessel marks a new chapter in her storied history. As part of Citizen Sea's mission, Seabird now serves as an ambassador for marine and coastal environment conservation along the Northern Ireland coast. The vessel is equipped with lab space for marine research and educational programs, offering hands-on learning experiences in marine biology, conservation, and traditional seamanship. Through collaborations with schools, educators, and environmental organisations, Seabird plays a pivotal role in engaging the community and fostering a deeper connection with the marine environment.