Second Brazilian Riachuelo-class submarine conducts pre-service testing
The Humaitá is the second of four diesel-electric boats on order for the Brazilian Navy. (Photo: Agência Marinha de Notícias)
The second of four PROSUB conventional attack submarines has completed diving trials ahead of service entry with the Brazilian Navy later this year.
During March, Brazil's PROSUB SSK S-41 Humaitá carried out dynamic submersion and depth trials off the coast of Rio de Janeiro.
The Humaitá is the second of four diesel-electric boats on order for the Brazilian Navy and the acceptance tests at sea will release it for service entry. The first-in-class Riachuelo, was commissioned in September 2022.
The trials evaluate not only the submarine's ability to dive safely, but evaluate the level of readiness of the crew.
Related Articles
PROSUB programme passes new milestone
Defence: what to expect from the next Brazilian president
India enlists French help to install AIP in Scorpene submarines
The programme schedule envisages releasing S-41 for operational service in the second half of this year.
The four new Riachuelo-class SSKs are based on the Naval Group Scorpene design.
The PROSUB programme includes the establishment of a new naval base and submarine manufacturing facility at Itagui in Sepetiba Bay south of Rio de Janeiro, the build of four SSKs and technology transfer to allow the construction of Brazil’s first nuclear-powered attack submarine.
More from Naval Warfare
-
![New Zealand's HMNZS Te Mana successfully fires first Sea Ceptor missile]()
New Zealand's HMNZS Te Mana successfully fires first Sea Ceptor missile
CMS 330 is a combat management system developed by Lockheed Martin Canada that serves as the backbone for several Canadian and Chilean ship classes and has been installed on RNZN Anzac-class frigates.
-
![Turkey’s ASFAT on track to deliver first Hisar OPV in 2024]()
Turkey’s ASFAT on track to deliver first Hisar OPV in 2024
While outfitting activities on the first two Hisar-class OPVs have been advancing at Istanbul Naval Shipyard, discussions for additional platforms continue.
-
![Future of the South African Navy looks bleak despite new ships entering service]()
Future of the South African Navy looks bleak despite new ships entering service
The commissioning of SAS King Shaka Zulu, a Multi-Mission Inshore Patrol Vessel, into the South African Navy masks serious problems for the service as fleet availability falls dangerously low and capability atrophies.
-
![Babcock wins UK Royal Navy’s Dreadnought support contracts]()
Babcock wins UK Royal Navy’s Dreadnought support contracts
Babcock has won contracts worth more than £120 million to support the development and delivery of the Dreadnought-class submarines for the UK’s Royal Navy.
-
![Make or break: Can the European Patrol Corvette programme save shipbuilding in Europe?]()
Make or break: Can the European Patrol Corvette programme save shipbuilding in Europe?
With funding from the European Defence Fund and partner countries, the European Patrol Corvette programme has an opportunity to become the standard bearer for defence procurement and potentially offer a route forward for naval shipbuilding in Europe.
-
![Portugal contracts Damen for multi-purpose vessel designed for integrated uncrewed air and sea systems]()
Portugal contracts Damen for multi-purpose vessel designed for integrated uncrewed air and sea systems
The new ship’s primary roles will be search and rescue, emergency relief and oceanic research but will also be used for naval support operations and maritime safety.
