For all distress urgency and safety communications, the
maritime mobile terminal identification number or Maritime Mobile
Service Identity (MMSI) should be an integral part of the distress
alert and be provided to the RCC with the alert. When available, all
additional registration, commissioning or other data relevant to the
search and rescue or prosecution of a false alert should be referenced
to this number and made available to the proper SAR authority or RCC
upon request.