This is a huge difference. Argentine submarines reportedly average 10 hours per year submerged. Hours. The UK’s Vanguard-class boats remain submerged for ent

This is a huge difference. Argentine submarines reportedly average 10 hours per year submerged. Hours. The UK’s Vanguard-class boats remain submerged for entire 10-week patrols. At one time, Argentina had the most extensive navy in South America. That time was not in the last two decades. Much of their current capability could be best described as left-over.