{"data":{"id":"us/46-cfr-109.503","jurisdiction":"us","citation":"46 CFR 109.503","heading":"Emergency signals.","body":"(a) Emergency stations signals are established as follows:\n(1) The signal to man emergency stations is a rapid succession of short soundings of both the general alarm bell and the whistle, if a whistle is installed, for a period of not less than 10 seconds.\n(2) The signal to secure from emergency stations is the sounding of both the general alarm bell and the whistle, if a whistle is installed, three times.\n(b) The abandon unit stations signals are established as follows:\n(1) The signal to man abandon unit stations is a continuous sounding of both the general alarm and the whistle, if a whistle is installed.\n(2) If whistle signals are used to direct the handling of lifeboats and davit-launched liferafts, they must be—\n(i) One short blast to lower the lifeboats and davit-launched liferafts; and\n(ii) Two short blasts to stop lowering the lifeboats and davit-launched liferafts.\n(3) The signal to secure from abandon unit stations is the sounding of both the general alarm bell and the whistle, if a whistle is installed, three times.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER I-A—MOBILE OFFSHORE DRILLING UNITS","PART 109—OPERATIONS","Subpart E—Emergency Signals"],"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":"96075235858a96693330f14658cb310a5e9e4815eeac98505376228b5e9326be","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-109.439","next":"us/46-cfr-109.521"},"notice":"GroundRules: Original legal text. Not legal advice."}