The "Original Honoring Our WWII Merchant Mariners Act of 2025" establishes a fund to provide a one-time payment of $25,000 to Merchant Mariners who served during World War II and meet specific service requirements. To be eligible, applicants must apply within one year of the bill's enactment and not have received benefits under the Servicemen's Readjustment Act of 1944. The bill authorizes $125 million for the compensation fund and requires the Secretary to report on the fund's operation and prescribe regulations for its implementation.