HMAS Warramunga (FFH 152) is an Anzac-class frigate of the Royal Australian Navy. One of ten frigates built for the Australian and New Zealand navies, Warramunga was laid down by Tenix Defence in 1997 and commissioned in 2001. From Wikipedia
A woman in her 50s was bitten by a shark while snorkeling, prompting a navy ship to provide emergency assistance and transport her to safety.