USS YDG-5 was a degaussing vessel of the United States Navy (USN) and formerly an auxiliary minesweeper operated by the Royal Australian Navy (RAN) during World War II.

She was built by Ernst Wright, Tuncurry, New South Wales and launched in 1936 for the North Coast Steam Navigation Company as the TSS Nambucca.

She formed part of Minesweeping Group 50 based in Sydney, undertaking minesweeping activities around Wilsons Promontory and Cape Otway.

After conversion to a degaussing vessel by Evans Deakin & Company, Brisbane, she was commissioned on 31 July 1944 as USS YDG-5.

She was inspected at Okinawa by USS Black Hawk in November 1945 and declared unseaworthy and declared a total loss on 30 December 1945.