Historical clue formulations

• Crew supervisor on a merchant ship — 2023-01-29
• Warrant officer — 2015-10-22
• Petty officer — 2015-07-09
• Merchant ship officer — 2011-12-07
• Crew leader — 2008-06-27
• Petty officer — 2007-07-03
• Hand on a deck — 2002-03-02
• Officer in charge of a ship's rigging, informally — 2001-05-07
• Merchant vessel officer — 2000-12-10
• Maintenance mate — 2000-08-17
• Petty officer — 1996-07-03
• Deck officer — 1994-11-03
• Warrant officer — 1994-09-23