Explanation: GMDSS Digital Selective Calling (DSC) radios are designed to automatically log received calls, especially critical ones like Distress alerts. This stored information is typically accessible through a "call data directory," "message memory," or "logbook" function on the equipment. This feature ensures that even if an operator fails to immediately record the particulars of an incoming alert, the vital details are not lost and can be retrieved later for review, confirmation, or accident investigation. The other options are incorrect: A) An address book stores contact information, not a log of received alerts. B) Details are not irrevocably lost, as the equipment is designed to store them. D) Storing alert details for later review is a fundamental safety and operational requirement of GMDSS equipment.