Merchant Marines Birthday 2025 Dates. Marine corps is celebrating its birthday on sunday, nov. On national maritime day, we honor the thousands of dedicated merchant mariners who serve on united states vessels around the world.

Lejeune detachment #332 will celebrate the 249th marine corps birthday on saturday, 9 november 2025, at the delta hotels norfolk airport. Merchant marine academy’s (usmma) class of 2025 will complete uscg license exams, their final milestone before graduation.