Violence against maritime navigation and maritime transport involving weapons of mass destruction

Subject to the exceptions in subsection (c), a person who unlawfully and intentionally— when the purpose of the act, by its nature or context, is to intimidate a population, or to compel a government or an international organization to do or to abstain from doing any act— transports on board a ship— any source material, special fissionable material, or equipment or material especially designed or prepared for the processing, use, or production of special fissionable material, knowing that it is intended to be used in a nuclear explosive activity or in any other nuclear activity not under safeguards pursuant to an International Atomic Energy Agency comprehensive safeguards agreement, except where— any equipment, materials, or software or related technology that significantly contributes to the design or manufacture of a nuclear weapon or other nuclear explosive device, with the intention that it will be used for such purpose, except where— any equipment, materials, or software or related technology that significantly contributes to the delivery of a nuclear weapon or other nuclear explosive device, with the intention that it will be used for such purpose, except where— There is jurisdiction over the activity prohibited in subsection (a)— in the case of a covered ship, if— such activity is committed— This section shall not apply to—