{"data":{"id":"us/46-cfr-108.241","jurisdiction":"us","citation":"46 CFR 108.241","heading":"Visual aids.","body":"(a) Each helicopter deck must—\n(1) Have a wind direction indicator located in an unobstructed area readily visible to helicopter pilots approaching the deck;\n(2) Be fitted around the perimeter with yellow and blue lights in alternate order, not more than 3 meters (10 ft.) apart; and\n(3) Be marked with—\n(i) The unit's identification;\n(ii) A continuous line 40 centimeters (16 in.) wide on the perimeter; and\n(iii) Aiming circles as may be appropriate considering deck configuration, helicopter type, and operational requirements.\n(b) All markings must be in a contrasting color to the surface of the deck.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER I-A—MOBILE OFFSHORE DRILLING UNITS","PART 108—DESIGN AND EQUIPMENT","Subpart B—Construction and Arrangement"],"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":"5463eabe744e26c99516e05039b3494501323208c330aa63d54ab5c21662275a","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-108.239","next":"us/46-cfr-108.301"},"notice":"GroundRules: Original legal text. Not legal advice."}