HMS St Aubin (W18)

HMS St Aubin was a Saint-class tug launched in 1918.

It was owned by the Admiralty until 12 April 1924, when it was sold to Shanghai Tug and Lighter Limited. On 8 March 1935, she was involved in a collision with SS Kiang Shun and was sunk in the Huangpu River. The sunken ship was not considered a significant threat to navigation, and was only raised more than six months later, on 25 September. On 4 July 1936, she was once again sunk in a collision with the naval cadet ship Ping An and SS Eugenia Chandris, and had to be raised.

In February 1940, the ship was requisitioned as a minesweeper and served under the Hong Kong Royal Naval Volunteer Reserve, where she was commanded by Lieutenant-Commander Peter Dulley. From 1943, the ship was laid up, until 1946 when she was returned to her owner. In November 1946, she was transferred to Yee Kee Tug & Lighter Co., and in 1947 she was renamed Tsze-Hong. In 1948, she was once again transferred to Chinese Maritime Trust Ltd. She was sunk off Taiwan on 9 November 1950.