Potential answers for "Shipwreck-finding tech"

⭐⭐⭐⭐ SONAR
⭐⭐⭐ GPS
⭐⭐ ISLET
⭐⭐ CASTAWAYS
⭐⭐ LIFEBELT
⭐⭐ SOS
⭐⭐ ISLE
⭐⭐ SALVAGES

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