Historical clue formulations

• Where camels can occasionally be seen swimming — 2025-05-31
• It's east of the Horn of Africa — 2020-05-16
• Locale for much of the world's oil shipping — 2019-08-22
• Where a 73-Across sails loaded with fuel — 2016-04-10
• Indus outlet — 2011-01-07
• Outlet for the Indus — 2005-04-08
• Indian Ocean part — 2001-09-07