Historical clue formulations

• Material that's been deliberately thrown overboard — 2025-11-18
• Detritus at sea — 2017-08-07
• Tea in Boston Harbor, once — 2011-08-17
• Emergency discards — 2006-11-04
• Throwaways — 2000-09-02
• Goods cast overboard — 1995-02-27
• It won't go along for the ride — 1994-07-22