United States Maritime Administration

The United States Maritime Administration (MARAD) is an agency of the United States Department of Transportation. MARAD administers financial programs to develop, promote, and operate the U.S. Maritime Service and the U.S. Merchant Marine. In addition, it conducts research and development activities in the maritime field; regulates the transfer of U.S. documented vessels to foreign registries; maintains equipment, shipyard facilities, and reserve fleets of Government-owned ships essential for national defense.

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MARAD also maintains the National Defense Reserve Fleet (NDRF) as a ready source of ships for use during national emergencies and logistically supporting the military when needed. Provided by Wikipedia