33 CFR 87.1 - Need of assistance.
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The following signals, used or exhibited either together or separately, indicate distress and need of assistance:
(d) A signal made by radiotelegraphy or by any other signaling method consisting of the group . . . — — — . . . (SOS) in the Morse Code,
(g) A signal consisting of a square flag having above or below it a ball or anything resembling a ball;
(o) Signals transmitted by radiocommunication systems, including survival craft radar transponders meeting the requirements of 47 CFR 80.1095.
[CGD 81-007, 47 FR 16174, Apr. 15, 1982, as amended by CGD 89-024, 55 FR 3947, Feb. 6, 1990; CGD 94-011, 63 FR 5732, Feb. 4, 1998]
Title 33 published on 2013-07-01
no entries appear in the Federal Register after this date.