33 U.S.C. § 1483 : Navigation And Navigable Waters — Pollution Casualties On The High Seas: United States Intervention — Foreign Government Ships; Immunity Date: 7 Mar 2017 TEXT PDF No measures may be taken under authority of this chapter against any warship or other ship owned or operated by a country and used, for the time being, only on Government noncommercial service. (Pub. L. 93–248, § 14, Feb. 5, 1974, 88 Stat. 10.)