Historical clue formulations

• Naval engineer — 2024-10-09
• Naval engineer — 2022-01-16
• U.S. Navy builder — 2020-10-28
• Naval engineer — 2017-06-11
• One making camp? — 2012-03-22
• Wartime bridge builder — 2010-08-06
• Navy builder — 2009-09-22
• Naval engineer — 2001-09-21
• Navy worker — 2000-07-16
• Navy builder — 2000-01-18
• Certain Navy person — 1999-03-06
• U.S. Navy builder — 1997-12-30