Survival craft station (also: survival craft radio station) is – according to Article 1.65 of the International Telecommunication Union´s (ITU) RR – defined as «A mobile station in the maritime mobile service or the aeronautical mobile service intended solely for survival purposes and located on any lifeboat, life-craft or other survival equipment.»
Each station shall be classified by the service in which it operates permanently or temporarily.
References
Survival craft station Wikipedia(Text) CC BY-SA