Este trecho que você citou, está escrito desta forma no regulamento da ITU original:
Caso você queira se aprofundar mais no assunto, sugiro que estude o regulamento original em inglês.32.27 § 18 A coast station using DSC to acknowledge a distress alert shall transmit the
acknowledgement on the distress calling frequency on which the distress alert was received and
should address it to all ships. The acknowledgement shall include the identification of the ship whose
distress alert is being acknowledged. (
http://search.itu.int/history/HistoryDi ... en.101.pdf