When did a proper warship last surrender in battle?
Short answerOutside civil wars, it is very rare. The Battle of Tsushima is the clearest example offered, though Chinese and civil-war cases complicate a precise latest occurrence.
NotesA functioning warship surrendering during battle is rare, especially outside a civil war. Small patrol craft and similar vessels do not answer the question in the same way as a major combatant. The Battle of Tsushima is the clearest example offered. Chinese ships fighting Japan and actions during the Chinese Civil War may provide later comparisons, but poor material condition and civil-war circumstances complicate them. The answer therefore remains qualified rather than naming a definitive last occurrence.