At the given coordinates is a monument commemorating the H.M.A.S Australia II.
The ship served along side other Commonwealth countries in the 1940s, before being retasked as a training vessel in 1950. The ship was decommissioned in 1954 and sold for scrapping in 1955.
The HMAS Australia in the Panama Canal, Circa 1935.
To find the cache, find the following numbers from the plaque:
IN MEMORY OF
HMAS Australia II
ABCD - EFGH
and those who served in her operational areas:
Dakar I
Dakar II
Battle of the Coral Sea
Solomon Islands
Arawe
Cape Gloucester
Aitape
Hollandia
Wakde
Biak
Noemfoor
Morotai
Battle of Leyte Gulf
Battle of Lingayen Gulf
Killed in action: IJ
Wounded: KLM
The cache is hidden at:
S34 GG.(H+C)KM E138 LM.HKE
Checksum = 17 + 9 = 26
Happy hunting!