SOLAS Chapter II-2, regulation 10.10.4 - Fire fighter`s communication
For ships constructed on or after 1 July 2014, a minimum of two two-way portable radiotelephone apparatus for each fire party for fire-fighter´s communication shall be carried on board. Those two twoway radiotelephone apparatuses shall be of an explosion-proof type or intrinsically safe. Ships constructed before 1 July 2014 shall comply with the requirements of this paragraph not later than the first survey after 1 July 2018. In the following the Expression "Two-way portable radiotelephone apparatus" shall be referred to as "fire-fighter radios".

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