ⓐ craft : any air or sea surface vehicle or submersible of any kind or size
ⓑ Datum : point, normally specified by the SMC. where a SAR facility is to begin its search pattern
ⓒ Hypothermia : Abnormal lowering of internal body temperature form exposure to cold air, wind, or water
ⓓ Rescue unit : An operation to retrieve persons in distress
ⓔ Fetch : The distance the wave have been driven by a wind blowing in a constant direction, without obstruction.
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