HMS Wintringham (M2777/IMS77) was a for the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

. Their names were all chosen from villages ending in -ham. The minesweeper was named after Wintringham

Wintringham

Wintringham is a village and civil parish in the Ryedale district of North Yorkshire, England. It is near the A64 road and east of Malton.The Yorkshire Wolds Way National Trail and the Centenary Way, long distance footpaths pass through the village...

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She remained in operational reserve in a land cradle at Rosneath

Rosneath

Rosneath is a village in Argyll and Bute, Scotland. It sits on the western shore of the Gare Loch near to the tip of the Rosneath peninsula which projects south to the Firth of Clyde between the Gare Loch and Loch Long to the west, and about 2 miles from the village of Kilcreggan which is sited...

 on the Clyde until 1963. She was transferred to the Royal Australian Navy

Royal Australian Navy

The Royal Australian Navy is the naval branch of the Australian Defence Force. Following the Federation of Australia in 1901, the ships and resources of the separate colonial navies were integrated into a national force: the Commonwealth Naval Forces...

on 9 June 1966, arriving in Sydney as deck cargo on the merchant ship Gladstone Star on 29 July 1968. She was converted into a diving tender by Halvorsens, renamed HMAS Seal (DTV1001/Y298) and entered service in December 1968.

Seal was decommissioned in 1988, sold into civilian service on 29 November 1989, and converted into the corporate luxury yacht TSMV Seal. Seal ran aground 2003.