{"data":{"id":"us/46-cfr-169.231","jurisdiction":"us","citation":"46 CFR 169.231","heading":"Definitions relating to hull examinations.","body":"As used in the part—\n(a) Drydock examination means hauling out a vessel or placing a vessel in a drydock or slipway for an examination of all accessible parts of the vessel's underwater body and all through-hull fittings, sea chests, sea valves, sea strainers, and valves for the emergency bilge suction.\n(b) Underwater survey means the examination of the vessel's underwater hull including all through-hull fittings and appurtenances, while the vessel is afloat.\n(c) Internal structural examination means an examination of the vessel while afloat or in drydock and consists of a complete examination of the vessel's main strength members, including the major internal framing, the hull plating, voids, and ballast tanks, but not including cargo or fuel oil tanks.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER R—NAUTICAL SCHOOLS","PART 169—SAILING SCHOOL VESSELS","Subpart 169.200—Inspection and Certification"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"ddfac8464e84d29f082ea58170baa6c5714db147d562f37e119e733449f462e8","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-169.230","next":"us/46-cfr-169.233"},"notice":"GroundRules: Original legal text. Not legal advice."}