{"data":{"id":"us/33-cfr-89.1","jurisdiction":"us","citation":"33 CFR 89.1","heading":"Definitions.","body":"As used in this subpart:\nInland Rules refers to the Inland Navigation Rules contained in the Inland Navigational Rules Act of 1980 (Pub. L. 96-591) and the technical annexes established under that act.\nA vessel of special construction or purpose means a vessel designed or modified to perform a special function and whose arrangement is thereby made relatively inflexible.\nInterference with the special function of the vessel occurs when installation or use of lights, shapes, or sound-signaling appliances under the Inland Rules prevents or significantly hinders the operation in which the vessel is usually engaged.","path":["Title 33—Navigation and Navigable Waters","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER E—INLAND NAVIGATION RULES","PART 89—INLAND NAVIGATION RULES: IMPLEMENTING RULES","Subpart A—Certificate of Alternative Compliance"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-33.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:35Z","sha256":"538c6465eb90f08ba397fd1a25bd73224d27196c0990aa9023c8b2a80ec836b9","source_id":"us-cfr","stale":true,"prev":"us/33-cfr-88.07","next":"us/33-cfr-89.3"},"notice":"GroundRules: Original legal text. Not legal advice."}