especially hazardous cargo
(B)In this subsection, the term “especially hazardous cargo” means anhydrous ammonia, ammonium nitrate, chlorine, liquefied natural gas, liquiefied petroleum gas, and any other substance, material, or group or class of material, in a particular amount and form that the Secretary determines by regulation poses a significant risk of creating a transportation security incident while being transported in maritime commerce. (f)Notwithstanding any other provision of law, information related to security plans, procedures, or programs for passenger vessels or passenger terminals authorized under this chapter is not required to be disclosed to the public.