National Maritime Day 2025. That was the first ever transoceanic voyage under steam power.national maritime day also recognizes america's merchant marine and all its great contributions The date selected was based on the.

World maritime day is an annual event observed on the last thursday of september to celebrate the maritime industry’s contribution to global trade and the world economy. World maritime day is celebrated on the last thursday of every september, on september 25 this year, to honor the tireless work of the international maritime industry workers.