Historical clue formulations

• Baltic and Mediterranean — 2026-04-03
• The moon's "maria" — 2026-02-15
• Mariner's septet — 2026-02-09
• Settings of many Patrick O'Brian novels — 2025-10-12
• Seven ___ — 2025-09-27
• Sail the seven ___ — 2025-05-19
• They're rising over time — 2025-04-27
• Blue expanses on maps — 2024-07-08
• Large amounts — 2023-09-15
• Settings for naval gazing? — 2023-06-01
• High ___ — 2023-04-30
• Word after high or seven — 2023-03-15
• Mares, e.g. — 2023-02-18
• Geographical heptad — 2022-12-10
• Seven ___ — 2022-09-15
• "Seven" things for a pirate — 2022-05-30
• South ___ — 2022-05-01
• Vast expanses — 2021-10-07
• Sail the seven ___ — 2021-07-13
• Aegean and Baltic, for two — 2021-06-01
• Expansive septet — 2021-01-13
• Caspian and Caribbean — 2020-08-17
• Sizable bodies of water — 2020-04-13
• Caribbean and Caspian — 2020-03-16
• Lots and lots (of) — 2020-03-07
• They're often high, but never dry — 2020-02-28
• Word after high, heavy or seven — 2020-02-26
• Freedom of the ___ — 2020-01-12
• Some of them are described as red and yellow, but not orange — 2019-11-22
• They're blue on maps — 2019-03-30
• High ___ — 2019-01-05
• Blue swaths on maps — 2018-10-28
• High ___ — 2018-10-26
• Wet septet — 2018-05-08
• Rising concerns in modern times? — 2017-11-19
• Vast amounts — 2017-04-06
• South ___ (Polynesia's locale) — 2017-03-04
• A vast quantity — 2016-11-19
• Vast expanses — 2015-11-04
• Sail the seven ___ — 2015-10-26
• High ___ — 2015-10-04
• Caribbean and others — 2014-12-15
• Literally, with 20-Across, ski resort purchases — 2014-11-13
• Adriatic and others — 2014-06-30
• Noted septet — 2014-03-07
• Mediterranean and Caribbean — 2013-10-14
• Poseidon ruled them — 2013-10-06
• Sailors' domain — 2013-09-26
• Caribbean and Mediterranean — 2012-07-02
• They can get choppy — 2012-03-23