About Rockabill Marine Design — Workboat Design Experts
Our Expertise
Rockabill Marine Design was founded on a clear belief: good workboats come from understanding how vessels are actually used in service. Led by naval architect Ruairí Grimes, our team combines technical precision with real operational insight to deliver workboat design and commercial vessel engineering for offshore energy, aquaculture, autonomous operations, and specialist marine services.
We do not chase awards or headlines. We design commercial workboats and offshore vessels that perform where it matters most.
With experience spanning structural engineering, offshore project delivery, and regulatory consulting, we understand the full lifecycle of vessel development — from concept design and approval through to build support and launch.
Design Without Ego
We believe the best workboat designs are shaped by listening to operators, not by following trends. Our design process prioritises function, durability, and simplicity of operation, ensuring every commercial vessel we design delivers practical value in demanding marine environments.
If a feature improves safety, performance, or reliability, it stays. If it does not, it goes.
This approach has seen our workboat and commercial vessel designs recognised across the industry, including award-winning projects such as the Envirocat Eco 8.5, which set new benchmarks for operational efficiency.
Whether designing a custom mussel harvester, a 9m RIB, or a hydrogen-powered prototype, our focus remains the same — robust workboats engineered for real-world use
Supporting Innovation Across Sectors
Rockabill Marine Design is trusted by commercial workboat operators, aquaculture businesses, offshore wind contractors, and yacht designers seeking specialist naval architecture and engineering expertise.
We deliver tailored workboat and commercial vessel solutions across aquaculture, offshore wind, autonomous craft, and specialist government service vessels.
Whether supporting a new vessel concept or expanding an operational fleet, we bring a disciplined, practical approach to workboat design that is ready for build and operation.