As many of you probably know, an Argentine submarine has been lost at sea. The Argentine Navy lost contact with the submarine on Wednesday, although in the last day there have been some indications that someone on board may have tried to make contact via satellite phone yesterday. The submarine is thought to have been lost in an area that would not have eclipsed its crush depth. The US Navy and the Royal Navy have both sent search and rescue assets to help look for the San Juan.
Built in Germany, ARA San Juan entered service in 1985. She and her sister (ARA Santa Cruz) are large submarines, displacing about 2200 tons. Although Argentina had planned to increase the size of its submarine fleet since the later 1970s, defeat in the Falklands War added a sense of urgency to the acquisition. San Juan finished a mid-career service life extension program about five years ago.
Best hopes to the submariners and to their families.
— Naval Analyses (@D__Mitch) November 19, 2017