Delfin’s small size belies its destructive potential. Cuba has exactly one submarine. And we finally have a good, recent photograph of it. Forbes reporter H.I. Sutton was among the first to circulate a tourist’s 2020 snapshot of the Cuba navy’s sole Delfin-class submarine. The photo depicts the diminutive Delfin pierside in Havana. A nearby trawler offers some sense of scale, emphasizing just how tiny Delfin is. The Cuban boat is “one of the world’s least-photographed submarines,” Sutton explained. “When a tourist took a photo of Havana’s picturesque harbor, they di...