ITU-R M.588-1 in the Radio Frequency Table Allocation of Ireland.

Content Type
ITU DOCUMENTATION
Title
ITU-R M.588-1
Description
Black and white facsimile transmissions over combined metallic and radio circuits in the maritime mobile service and in the maritime mobile-satellite service  
Source
https://www.itu.int/pub/R-REP-M.588-1-1978