Historical clue formulations

• Cast off — 2026-08-15
• Embark — 2025-09-26
• Leave port — 2015-09-21
• Headed out for the drink — 2009-02-07
• Shove off — 2008-01-16
• Depart, in a way — 2005-04-22
• Cast off — 2003-01-03
• Shove off — 1999-11-19
• Embark on a voyage — 1996-08-27
• Head out of port — 1996-06-20
• Cast off — 1994-11-19