Argentine submarine wreck found one year after disappearance
The crushed wreckage of an Argentine submarine has been located one year after it vanished into the depths of the Atlantic Ocean with 44 crew members, in the country’s worst naval disaster in decades.
There has been ‘positive identification of the ARA San Juan,’ at a depth of more than 800m (2,600ft), the navy tweeted, confirming the vessel had imploded.
Experts say raising the submarine would be an enormous undertaking costing a billion dollars or more. Defence Minister Oscar Aguad said Argentina had ‘no means’ to do so.
The Seabed Constructor, a ship owned by US search firm Ocean Infinity, made the discovery 16 November, one day after the first anniversary of the disappearance of the San Juan.
The ship had set out in September in the latest attempt to find the San Juan, whose disappearance cost the Argentinian Navy’s top officer his job.
The navy lost contact with the submarine on 15 November, 2017, about 450km from the coast while it was travelling northward from Ushuaia, at Argentina’s southern tip.
Adml Jose Villan, the navy’s new top commander, said that the rough terrain on the ocean floor made it difficult for search vessels, which had already trawled the site, to find the sub.
Pieces that were 11m, 13m and 30m long were spotted in a ‘moon-like zone with craters and canyons,’ said Capt Enrique Balbi, adding that the hull had been ‘crushed inwards.’
Aguad met earlier with family members to show photos taken by an underwater robot. They showed a propeller, the sub’s bow with torpedo-launching tubes, and an upper section of the vessel lying on the ocean floor.
More from Defence Notes
-
UK urged to prioritise sea, air and space over heavy armour
A report from the Council on Geostrategy argues the UK should move away from a traditional balanced force and shift investment to naval, air and space capabilities, backed by a larger fleet of attack submarines and deeper AUKUS integration.
-
Thales: deployment speed to determine winners in ‘production versus production’ era
At its technology summit in London, attended by Shephard, Thales UK examined the importance of speed to delivery, the growing focus on cross-domain capabilities and how procurement reform could be crucial for future battlefield advantage.
-
Orchestrating operational readiness across every defence domain
Are all systems ready for the next mission? Have upgrades been applied? Are all assets aligned to deploy together, on time and fully prepared? In modern defence operations, readiness is no longer measured platform by platform. It is measured by how well people, assets, data and decisions move together — across land, sea and air.
-
Global tensions drive defence supply chain scrutiny
Governments worldwide are scrambling to decouple defence supply chains from dependency upon strategic rivals, but countries could struggle to do it all themselves.
-
How deepening AI usage can boost efficiency and maximise effects for forces
Saab has outlined how it is using artificial intelligence to make training more like electronic gaming, while the UK’s Power Size Technologies is applying the same technology to better evaluate and design vehicle capability, moving AI-enabled innovation further upstream from the frontline.
-
From systems integrator to multi-domain solutions provider (video)
Philipp von Brandenstein, Head of Corporate Communications at Rheinmetall, explains how Eurosatory 2026 marked a new stage in the company's evolution.