Question 17C2

While DSC equipment may possess the technical capability for operators to initiate DSC acknowledgements and ALL SHIPS DSC relays, maritime regulations within the Global Maritime Distress and Safety System (GMDSS) dictate specific procedures. Only a Rescue Coordination Center (RCC) or a vessel designated by an RCC should acknowledge a DSC Distress alert via DSC. Other vessels that receive a DSC Distress alert should switch to voice communication (e.g., VHF Channel 16) to listen for distress traffic, acknowledge by voice if necessary, and offer assistance. Initiating DSC acknowledgements or ALL SHIPS DSC relays by multiple non-SAR vessels is discouraged to prevent saturation of the DSC channel, confusion, and hindering the Search and Rescue (SAR) effort. Therefore, even if equipment allows it, adherence to operational procedures is paramount. Option A is incorrect because operators *can* acknowledge and relay, but typically via voice. Option C is incorrect as the standard procedure is *not* for operators to routinely use DSC for acknowledgements/relays. Option D is incorrect because DSC acknowledgements and relays are not automatic; they require operator intervention.