2480. You are proceeding to the area of reported distress. When you arrive at the reported position, the vessel in distress is not sighted. What type of search should be conducted?

Upon arriving at the reported distress position without sighting the vessel, an expanding square search should be conducted. This pattern initiates at the reported position and systematically expands outward, suitable for situations with a reasonably accurate last known position where the object is not immediately visible.