Custom shipbuilding
Custom shipbuilding Solutions for every operational need
At SYM Naval, shipbuilding is driven by precision, advanced engineering and applied innovation. We design and build vessels fully adapted to each shipowner’s operational needs—from tugboats and MARPOL units to zero-emission projects such as Castalia. With state-of-the-art digital tools and eco-efficient technologies, we ensure safety, performance and regulatory compliance at every stage of the process.
Supported by multidisciplinary teams and strategic shipyards in the Mediterranean and the Caribbean, we deliver custom shipbuilding solutions that combine technical capability, operational proximity and excellence in execution. This approach allows us to build vessels that are robust, efficient and ready for the current and future demands of the maritime industry.

Tugboats
Custom tugboats for port operations and offshore support, delivering up to 80 t bollard pull. Available with diesel, hybrid or fully electric propulsion.

MARPOL vessel
Specialized units for the collection and transport of MARPOL I–VI waste. Designed to ensure compliance with international environmental standards.

Auxiliary vessels
Multi-purpose support vessels, including catamarans and port service units, designed to adapt to diverse operational needs.
Tailor-made shipbuilding 100% adapted to each operation
Every vessel built by SYM Naval reflects a rigorous and client-focused approach. From initial design to final delivery, our port and special-purpose ships combine custom engineering with clean technologies to ensure efficiency, safety and sustainability.
This shipbuilding process is fully adapted to the real needs of each shipowner and operational environment, guaranteeing optimized performance, reduced costs and long-term reliability.
With tools such as the digital ship model, clients can visualize and interact with the vessel before fabrication begins—reducing errors, improving efficiency and meeting the highest quality standards aligned with Industry 4.0.
Strategic shipyards Network of shipyards with global reach
SYM Naval operates as a network of strategic shipyards located in Spain and the Dominican Republic. This structure allows us to combine local execution with shared engineering standards, technical coordination and certified processes across all shipbuilding projects.
Through this shipyard network, we deliver tailor-made vessels with consistent quality, operational efficiency and full traceability, adapting each project to regional requirements while maintaining a unified technical approach.
- Vilanova i la Geltrú (Spain): fully equipped shipyard with proprietary docks, enabling direct dockside execution, structural works and technical integrations adapted to each shipowner’s requirements.
- Boca Chica (Dominican Republic): 20,000 m² shipyard with versatile facilities and technical supervision, strategically positioned to support shipowners across the Caribbean, the Panama Canal and LATAM.
Castalia, 100% electric harbour vessel
Castalia demonstrates how electric propulsion can be successfully integrated into real port operations. Designed and built by SYM Naval, this zero-emission harbour vessel combines efficiency, versatility and reliability, supporting daily port services while contributing to cleaner, more sustainable ports.
Castalia, 100% electric harbour vessel
Castalia demonstrates how electric propulsion can be successfully integrated into real port operations. Designed and built by SYM Naval, this zero-emission harbour vessel combines efficiency, versatility and reliability, supporting daily port services while contributing to cleaner, more sustainable ports.
Why choose SYM Naval Built on engineering excellence
Quality
All vessels are built under international naval engineering standards and classification society rules, ensuring safety, durability and full regulatory compliance.
Innovation
Through SYMlab and advanced digital ship models, we anticipate technical challenges, optimize planning and reduce downtime, delivering smarter and more efficient vessels.
Sustainability
From eco-efficient coatings to hybrid and fully electric propulsion, our shipbuilding projects are aligned with the maritime industry’s decarbonization goals.
Flag state delivery
We deliver vessels fully registered under their flag state, ready to operate from day one, reducing administrative processes and accelerating entry into service.