Sherlock Holmes and the case of the Oil Smugglers Mystery Cache

The cache is not at the posted co-ords, you need to solve the puzzle  to locate  the final . 

Sherlock was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known location, you find a note:
710 57735 34 5508 51 7718
Can you break the detective's code and find the criminal's name?

You can validate your puzzle solution with certitude.