Well in that case the message can be broadcasted to all boats in the vicinity (commercial boats - those that have VHF) to look for the SOS pattern and not shy away from it. When all you have is hope, it’s better than nothing.Which SAR has night vision capabilities & are able to operate at night in all weather conditions and have FLIR?
Only Singapore.
PS - nothing was implied about dictating terms to SAR, It is assumed to be best effort.