Reducing Crime and Terrorism at America's Seaport Act of 2004

Reducing Crime and Terrorism at America's Seaports Act of 2004 - Amends the Federal criminal code to prohibit: (1) entry by false pretenses to a secure area of a seaport; (2) knowingly failing to obey an order to heave to by an authorized Federal officer; (3) forcibly interfering with an authorized law enforcement action or providing false information during a boarding; and (4) willfully disabling a passenger vehicle.

Sets penalties for knowingly and intentionally: (1) placing in U.S. navigable waters a device or substance likely to destroy or damage a vessel or its cargo or likely to interfere with safe navigation or maritime commerce; (2) discharging or releasing into U.S. navigable water or onto an adjoining shoreline any substance that would endanger human life, health, or welfare or the marine environment; and (3) transporting aboard any vessel explosive, biological, chemical, or radioactive or nuclear material to be used to commit terrorism.

Sets penalties for: (1) knowingly transporting aboard any vessel a terrorist or terror suspect; (2) willfully causing destruction of a vessel or maritime facility; and (3) imparting or conveying false information concerning an attempt made to commit certain criminal acts

Expands the scope of a prohibition against theft of interstate or foreign shipments. Increases penalties for stowaways on vessels or aircraft. Prohibits bribery affecting port security.

Amends the Tariff Act of 1930 to increase penalties for noncompliance with manifest requirements and to expand the scope of those requirements to cover any responsible party, including non-vessel operating common carriers.