This was going to be part of a challenge cache series, but there is a moratorium on challenge caches, so this is now a proper puzzle in the same theme. The cache is not located at the published co-ordinates.
To find the co-ordinates for the final location, complete the following puzzle.
The cache can be found at S41 10.(A-B-C)(A-2C-B)(B) E174 54.(B+C)(B)(C-B)
The cache is a 200ml sistema, with log book only.
You can check your solution here: GeoChecker.com.