
MG Sub Service, based in Olbia, specializes in marine and underwater work of any complexity in Sardinia and the rest of Italy, offering comprehensive and customized solutions for public bodies, marinas, shipyards, and private companies. Years of experience in the sector, combined with a team of highly qualified divers and technicians, allows for rapid, safe, and precise interventions in any sea conditions.
MG Sub Service's activities include the construction and maintenance of maritime structures, such as docks, piers, floating docks, and mooring systems, as well as specialized underwater operations such as inspections, recovery, salvage, and dredging. Each project is carefully planned, from a detailed site analysis to the operational phase, to ensure long-lasting results that comply with current safety and environmental regulations.
The use of modern equipment and cutting-edge techniques allows the company to successfully perform even complex operations in deep waters or in difficult-to-access areas. MG Sub Service is a benchmark in the marine and underwater work sector in Sardinia and the rest of Italy, thanks to the combination of experience, innovation, and reliability that characterizes every project.

Specialized services for port infrastructures and underwater environments
MG Sub Service offers a wide range of services dedicated to the maritime and underwater world, covering all needs related to the construction and maintenance of marine structures. Among the main activities are the laying and maintenance of underwater pipelines, the recovery of sunken vessels, seabed cleaning, and underwater inspections of docks, piers, hulls, and submerged structures.
The company uses high-definition underwater video inspection systems, allowing for precise documentation of infrastructure status and planning of any necessary corrective actions. Furthermore, the use of cavitation cleaning techniques allows for the removal of encrustations and marine organisms without damaging surfaces, ensuring excellent results on materials such as steel, concrete, or wood.
The technical expertise of our staff and our methodical approach to operations allow MG Sub Service to ensure maximum efficiency in every operational context. Each intervention is carried out in compliance with environmental and safety regulations, with particular attention to protecting the marine ecosystem and ensuring the sustainability of our operations.
OUR STRENGTHS
Certified experience and expertise
With over 15 years of experience in the underwater and maritime sectors, MG Sub Service guarantees professional interventions in any context. Founder Giammario Marroni and his team of qualified divers bring with them expertise gained from large international projects, including the salvage of the Costa Concordia and project management for the Oil & Gas sector.
Cutting-edge technologies
The company uses state-of-the-art equipment and tools to ensure maximum precision and safety in every intervention. From HD underwater video inspections to eco-friendly cavitation cleaning systems, MG Sub Service ensures rapid, effective results with low environmental impact.
Safety and respect for the environment
Every operation is conducted according to the highest safety standards and in compliance with environmental regulations. MG Sub Service places great emphasis on protecting the sea and its resources, adopting procedures and techniques that minimize impact on the marine ecosystem.
Rapid interventions and tailor-made solutions
Thanks to its strategic location in Olbia and flexible organization, the team is able to respond promptly throughout Sardinia. Each project, from boat recovery to seabed cleaning, is planned based on the client's specific needs, ensuring efficiency and on-time delivery.

Trust the marine and underwater professionals in Olbia
Choosing MG Sub Service means relying on an experienced and reliable partner for all marine and underwater work in Sardinia and the rest of Italy. The company stands out for its ability to combine technical expertise, timeliness, and innovation, offering customized solutions for every need, from small jobs to major infrastructure projects.
Thanks to a flexible organization and a modern fleet of vehicles, MG Sub Service is able to respond quickly to emergencies at sea, recovery operations, or scheduled maintenance. Each project is managed with the utmost attention to detail, ensuring quality, safety, and on-time delivery.
Do you need maritime and underwater work in Sardinia and the rest of Italy?
Contact MG Sub Service for fast, safe, and professional service at sea or in port! We're here to offer you customized, high-quality solutions for all your needs.





