{"data":{"id":"us/46-cfr-61.20-18","jurisdiction":"us","citation":"46 CFR 61.20-18","heading":"-18 Examination requirements.","body":"(a) Each tailshaft must be drawn and visually inspected at each examination.\n(b) On tailshafts with a taper, keyway, (if fitted) and propeller designed in accordance with American Bureau of Shipping standards to reduce stress concentrations, the forward 1/3 of the shaft's taper section must be nondestructively tested in addition to a visual inspection of the entire shaft.\n(c) On tailshafts with a propeller fitted to the shaft by means of a coupling flange, the flange, the fillet at the propeller end, and each coupling bolt must be nondestructively tested in addition to a visual inspection of the entire shaft.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER F—MARINE ENGINEERING","PART 61—PERIODIC TESTS AND INSPECTIONS","Subpart 61.20—Periodic Tests of Machinery and Equipment"],"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":"75858311e722dc1663ad55efdf3d29f6d3d80c813c076c7495a3577f02a7b340","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-61.20-17","next":"us/46-cfr-61.20-21"},"notice":"GroundRules: Original legal text. Not legal advice."}