
Sustainability & cutting-edge technology
Introducing Castalia vessel zero emissions boat —a remarkable 12.5-meter-long, 5-meter-wide multipurpose harbour vessel that is setting a new standard in the maritime industry for a greener future.
- Empowering Green Pioneers
- Silent Powerhouse
- Control at Your Fingertips
- Proactive Safety Measures
- Adaptive Performance
Zero emissions boat features
Exhaust Emissions Reduction
The vessel eradicates exhaust emissions, promoting cleaner air and a greener environment. Its silent electric propulsion enhances crew comfort and reduces marine acoustic pollution.
Advanced Control System
The Castalia vessel uses CAN BUS for seamless onboard communication, integrating diagnostics for predictive maintenance and rapid issue resolution.
Alarm Management
The vessel records battery alarms for early warnings, while continuous gas concentration monitoring in the battery room triggers automatic risk-mitigation measures.
Versatile Navigation Modes
Castalia offers a range of navigation modes—eco, navigation, and maneuvering—allowing for optimal performance and energy efficiency tailored to specific operational needs.


About us
We are specialists in the construction of vessels for harbour use, support and transport services, and in the conversion, repair and maintenance of all types of vessels.
Naval Infrastructure
Certified by International Association of Classification Societies
Engineering Team
Unparalleled expertise in every project we take
Our Naval Services
Professional Services of Shipbuilding, Conversion and Repair with 25 years of experience attending ships.

Ballast water treatment
Ballast water treatment onboard ships is an essential method for reducing environmental impact.

Naval shipbuilding
Shipbuilding of harbour vessels in steel and aluminum, using the most up-to-date systems and equipment on the market.

Ship repair and conversion
Ship repair and conversion of cruise ships and merchant ships. Professional engineers and divers. Facilities in Caribbean and Mediterranean.








We provide the best technical assistance, repair & maintenance services
technical coverage
experience
and aluminum ships
Our goals in numbers
Naval projects
Years of experience
Countries covered
Our naval projects

Multipurpose Harbour Vessel

Mooring Boat TM-024-02

Multipurpose support vessel

Support vessels

Other services
Our commitment to excellence extends beyond innovative vessels like Castalia, as we stand ready to support your maritime needs with top-notch solutions across the naval industry spectrum.
- Afloat repairs
- Assistance in dry dock
- Auxiliary harbour vessels
- Tugboats
- Facilities in the Mediterranean
- Facilities in the Caribbean

Types of vessels in maritime transport: a comprehensive guide
Over the last century, the evolution of international goods transport and the improvement of ships for other types of uses has been enormous. Despite the striking that large vessels such as containerships…

Fundamentals of naval electrical engineering: Power systems on ships
Electrical systems in the shipbuilding industry have become increasingly complex over the years. From relatively simple systems considered auxiliary, these systems that require a very careful design, especially with their…

Shaping the Future of Maritime Innovation: SYM Naval at the 64th International Naval Engineering Congress
The maritime industry stands at a critical crossroads of technological transformation. From March 26-28, 2025, Gijón will host the 64th International Naval Engineering Congress, bringing together the most innovative minds in naval engineering and maritime industries. Our commitment to maritime innovation SYM Naval is proud to be an official sponsor