Submarine “Riachuelo” Performs Sea Trials on the Surface for its Propulsion System
(Source: Brazilian Navy; issued Aug. 14, 2020)
(Unofficial translation by
Riachuelo is the first diesel-electric built in Brazil. She is derived from Naval Group’s Scorpène design, and adapted to Brazilian requirements, with technical assistance from the French company. (BR Navy photo)
On August 12, another important milestone was accomplished within the scope of the Submarine Development Program (PROSUB), when the submarine “Riachuelo” (S 40) successfully performed the tests foreseen for the surface propulsion system, in continuation to the extensive acceptance testing program at sea.

In addition to these checks, the steering system (horizontal and vertical rudders) and navigation systems were also satisfactorily tested, the results of which will enable the continuation of these tests with a high degree of platform security.

During the phase in question, the recommended exercises were fully completed, with the “Riachuelo” covering 8 nautical miles on the surface, in a maritime area located in the interior of Sepetiba Bay, on the south coast of Rio de Janeiro.


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