Tag Archives: Riachuelo (S40)

Brazilian Scorpène

On Thursday September 1st, the first of the four Scorpène submarines of the ProSub program was commissioned by the Brazilian Navy. The Riachuelo (S40) has been built entirely in Brazil by Itaguaí Construções Navais (ICN) thanks to a Transfer of Technology programme from Naval Group. The ceremony took place at the Itaguaí Naval base.

Riachuelo (S40)
Delivery and commissioning of the Riachuelo, the first Brazilian Scorpène submarine entirely made in Brazil

Launched in December 2018, the Riachuelo successfully completed her sea trials and has now been delivered and entered into service within the Brazilian Navy.

Pierre Éric Pommellet, CEO of Naval Group said: «The commissioning of the Riachuelo is a major milestone for the Brazilian Navy, ICN, Naval Group and all our partners. She will bring new capabilities to the Brazilian Navy for decades to come. The successful delivery of the Riachuelo, the first Scorpene submarine entirely built in Brazil is proof of the success of Naval Group’s transfer of technology. We are proud to be part of the ProSub program and remain fully committed to deliver the three other units of the series».

In Brazil, Naval Group went further than ever before in terms of transfer of technology. The Scorpène submarines are manufactured and assembled in the shipyard built in Itaguaí by Itaguaí Construções Navais, the group’s joint venture with Novonor. Humaitá (S41), the second submarine of the series launched in December 2020, will start her trials in September 2022.

ICN employs more than 1,700 Brazilian employees. Naval Group has selected and qualified many local suppliers who have joined its supply chain for the ProSub contract but also for other business opportunities. In this way, the company’s partners can have access to new markets by putting forward the know-how and experience acquired through the program. Naval Group thus contributes to the development of a robust Brazilian naval industrial ecosystem. Hundreds of Naval Group employees are also working in the back office on all French sites.


Naval Group, a long-term partner of Brazil

In 2009, within the framework of the French-Brazilian strategic defence cooperation agreement, the Brazilian Navy chose Naval Group for its Programa de desenvolvimento de Submarinos, the ProSub program. Brazil decided to reinforce its submarine force with four new conventional submarines (SSK) and the development of an indigenous nuclear-powered submarine (SSN).

Through an unprecedented transfer of technology, Naval Group is working with Brazil to build and operate four conventional Riachuelo-class submarines (Scorpène type) in a new shipyard and operational naval base built in Itaguaí for this purpose.


Scorpène, a modern, high-performant, and stealthy submarine

The Scorpène is a 2000-tons conventional submarine designed by Naval Group for all types of missions, such as anti-surface warfare, anti-submarine warfare, long-range strikes, special operations or intelligence gathering. Extremely stealthy and fast, it has a level of operating automation that allows a limited number of crew, which reduces its operating costs significantly. Its combat edge is highlighted by the fact that it has 6 weapon launching tubes, 18 weapons (torpedoes, missiles).

With 14 submarines sold worldwide, the Scorpène is a key reference of conventional attack submarines (SSK) for navies around the world. It can be easily adapted to specific requirements of customers and the continuous improvement of the Scorpene ensures the seamless integration of the latest technology onboard.

Brazilian Scorpène

According to Poder Naval, the submarine Riachuelo (S40), the first of four S-BR (modified Scorpène class) diesel-electric attack submarines of the Submarine Development Program (Prosub), started her sea trials on September 25, 2019.

The Brazilian Navy’s first license-built Scorpène submarine, Riachuelo (S40), at the Itaguaí Naval Complex while preparing for her sea trials. These are due to last for the first half of 2020, with commissioning to follow in October 2020 (Twitter photo)

Sea trials are scheduled to last until the first half of 2020, while boat’s commissioning is scheduled for October 2020.

Riachuelo (S40) was launched at a ceremony held at the Itaguaí Naval Complex on December 14, 2018.

A 533-mm heavy F21 torpedo from the Naval Group and a test Exocet SM39 Block 2 Mod 2 anti-ship missile are expected to be launched during the Riachuelo sea trials, the Navy said.

The Riachuelo will be followed by three more submarines: the Humaitá (S41), scheduled for launch in 2020, the Tonelero (S42) in 2021 and the Angostura (S43) in 2022.

To assembly site

On January 13 and 14, the Brazilian Navy (MB) and the company Itaguaí Construções Navais (ICN) transferred three sections of the Riachuelo (S40) submarine to the Madeira Island shipyard, in the Itaguaí Naval Complex.

Brazil’s first Scorpene submarine Riachuelo (S40) moved to assembly site
Brazil’s first Scorpene submarine Riachuelo (S40) moved to assembly site

Riachuelo is the first submarine of the Submarine Development Program (PROSUB), which provides for three more conventional boats as well as the first Brazilian submarine with nuclear propulsion.

The five-kilometer journey was completed in 11 hours, starting at the Steel Structures Manufacturing Unit (UFEM), which is also located in Itaguaí, Rio de Janeiro (RJ) state. The logistics operation required a month’s planning and included the removal of stretches of the electricity grid.

The most complex stage of the operation occurred on January 14, when traffic had to be suspended on the BR-493 road to allow passage of the 320-wheeled special vehicle that transported the 619 tons of the three sections, which measured 39.86 meters/131 feet in length and 12.30 meters/40 feet in height.

The remaining two sections of the Riachuelo, weighing 487 tonnes and measuring 30 meters/98 feet, will soon be transferred separately to the Construction Shipyard, where the submarine will enter final assembly.

The aim is to launch the boat into the sea during the second half of 2018.

The other three diesel-electric submarines, Humaita (S41), Tonelero (S42) and Ango Stura (S43), are all at different stages of construction at UFEM.