MSA Koraaga (1185) was an auxiliary minesweeper operated by the Royal Australian Navy (RAN). Launched in 1973 as Grozdana A., the vessel was operated commercially as a tuna-fishing boat until she was acquired under the RAN's Craft of Opportunity Program for use as an auxiliary. During military service, she had a crew of nine. The ship claimed to have discovered the wreck of the hospital ship Centaur on 10 April 1995, east of Cape Moreton, Queensland, however the wreck was later proven to be another ship, possibly the MV Kyogle. Koraaga was sold April 2000.