🚢 Finding the missing submersible taking wealthy tourists to visit the site of the Titanic wreckage in deep waters will be a complicated challenge, marine engineering expert Alistair Greig told Reuters on Tuesday, three days since the vessel went missing.   🔗 Read about the complex search-and-rescue efforts at our link in bio.   #Reuters #live #news #videonews #USGC #searchandrescue #submarine #Titanic #AtlanticOcean #ROV #Titanicsub