Controlled Substances: Possession on Vessel by United States Citizen or Resident Alien, is a law that prohibits non-commercial vessels from possessing certain controlled substances which are regulated by the United States Drug Enforcement Administration (DEA). These substances include, but are not limited to, illicit drugs such as marijuana, cocaine, and heroin. This law applies to vessels owned by U.S. citizens or resident aliens, and prohibits possession of these substances on any vessel located in U.S. waters. Violations of this law can result in criminal prosecution and/or civil penalties. Different types of Controlled Substances: Possession on Vessel by United States Citizen or Resident Alien include: • Marijuana • Cocaine • Heroin • LSD • Methamphetamine • Ecstasy • Opiates • Anabolic Steroids • Other ControlSubstancenceeeeeeeeees.es