Safety signs accordint to IMO Resolution A. 1116(30) 05/12/2017 & ISO Standard 24409-2 (2014) effected for 01/01/2019 for any type of vessel build after that date or having a General renovation
To signify that the mains plug must be disconnected from electrical outlet for the purposes of maintenance of electrical equipment, in the case of malfunction or when left unattended