California Code, Public Resources Code - PRC § 71202

(a) A vessel of the armed forces, as defined in paragraph (14) of subsection (a) of Section 1322 of Title 33 of the United States Code that is subject to the “Uniform National Discharge Standards for Vessels of the Armed Forces” pursuant to subsection (n) of Section 1322 of Title 33 of the United States Code.

(b) A vessel in innocent passage, which is a foreign vessel merely traversing the territorial sea of the United States and not entering or departing a United States port, or not navigating the internal waters of the United States, and that does not discharge ballast water into the waters of the state, or into waters that may impact waters of the state.