Tous Travaux Sous Marins, widely recognized by its acronym TTSM, is a historic maritime service provider headquartered in Dakar, Senegal. Established in 1965, the company has solidified its status as a foundational player in the West African marine sector, leveraging the strategic geographic advantage of the Port of Dakar to deploy technical teams across a coastal range extending from Mauritania to Liberia. Founded during the nascent era of commercial diving in the region, the enterprise has evolved from a specialized diving outfit into a comprehensive marine contractor capable of executing complex offshore and inshore operations.
The company’s primary operational focus lies in underwater intervention and subsea engineering. TTSM maintains a dedicated workforce of certified commercial divers and technicians who provide essential support to the shipping, energy, and port sectors. A major pillar of its service portfolio is underwater ship husbandry, a critical requirement for maintaining the efficiency of global merchant fleets. This includes mechanical hull cleaning, propeller polishing to optimize fuel efficiency, and emergency underwater repairs. Furthermore, the company conducts rigorous underwater inspections and surveys, utilizing advanced photography and closed-circuit television systems to assess hull integrity in alignment with the safety protocols of international classification societies.
Beyond vessel services, Tous Travaux Sous Marins plays a significant role in the maintenance and development of maritime infrastructure. The company executes heavy marine works such as the installation and repair of underwater pipelines, telecommunication cables, and intake outfalls. It also supports port authorities through bathymetric surveys, hydrographic studies, and geotechnical assistance, which are essential for dredging and harbor construction projects. Throughout its history, TTSM has frequently collaborated with major international diving and offshore engineering groups, a practice that has helped integrate global technical standards into its local operations. By offering rapid mobilization capabilities and a diverse range of technical solutions, the company ensures the continuity of maritime trade and industrial activity throughout the West African sub-region.
