5.228AA in the Radio Frequency Table Allocation of Ireland.

Content Type
ITU FOOTNOTE
Title
5.228AA
Description
The use of the frequency bands 161.9375-161.9625 MHz and 161.9875-162.0125 MHz by the maritime mobile-satellite (Earth-to-space) service is limited to the systems which operate in accordance with Appendix 18.  (WRC-15)
Source
https://search.itu.int/history/HistoryDigitalCollectionDocLibrary/1.43.48.en.101.pdf