Wollongong council workers found the plaque washed up on Bulli Beach.

Police have spent the past five days collecting wreckage and personal items washed up on the region's beaches after the yachting tragedy on Flinders Islet about 3am on Saturday.

Killed in the accident were ShockWave V skipper Andrew Short and navigator Sally Gordon. Sixteen crew members were rescued.

Other items found include bags, clothing, a passport and a personal EPIRB distress beacon.

Port Kembla water police were called to Coniston Beach on Tuesday after the Australian Maritime Safety Authority reported a signal from an EPIRB about 200m offshore, but the beacon could not be located.

Difficult conditions have hampered efforts to salvage the yacht, believed to lie on the ocean floor.