Historical clue formulations

• Hit 1981 German-language film / "What a shame!" — 2025-06-15
• 1981 German film set aboard a submarine — 2025-06-10
• Oversize Oktoberfest vessel named after a classic film — 2015-07-31
• 1981 German-language hit film — 2011-08-07
• 1981 German-language hit film — 2007-03-04
• Jurgen Prochnow nail-biter of 1981 — 1994-02-26