Historical clue formulations

• Abandon, as plans — 2025-02-15
• Deliberately sink — 2020-10-02
• Send to the ocean bottom — 2014-08-24
• Sink — 2009-02-20
• Sink — 2000-05-18
• Sink — 1998-11-12
• Run with quick, small steps — 1995-02-11