The Colegio Oficial de Ingenieros Navales y Oceánicos (COIN) is a prestigious professional association dedicated to naval and ocean engineering in Spain. It serves as a key organization for naval engineers, providing a wide array of services tailored to support its members throughout their careers. COIN offers professional resources including training programs, employment opportunities, and financial aid through various funds, ensuring members receive the support they need in a competitive sector.

Additionally, COIN emphasizes professional development through its detailed documentation, guidelines for labor and taxes, and updates on maritime regulations at national and international levels. The association also hosts events, including congresses and symposiums focused on innovation in naval engineering and maritime industries. With an active commitment to environmental sustainability and collaboration within the sector, COIN stands as a leading force for naval engineers, promoting excellence and professional growth while addressing the contemporary challenges faced by the industry.