Dionysus Shipwrecked is a lost comedy, written either by Aristophanes or by Archippus. Regardless of authorship, the title suggests the play revolved around a story of Dionysus being shipwrecked. Has that story survived in any other form? Do we know anything about it?
The one story I know of Dionysus at sea, the one he's abducted by Tyrrhenian pirates, doesn't fit as there's no shipwreck involved.