HMS Stag was a 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...

 destroyer built by John I. Thornycroft & Company

John I. Thornycroft & Company

John I. Thornycroft & Company Limited, usually known simply as Thornycroft was a British shipbuilding firm started by John Isaac Thornycroft in the 19th century.-History:...

 at Church Wharf, Chiswick on the River Thames

River Thames

The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...

 and launched in 1899. She was constructed, like other Thornycroft destroyers of the period, of a new high tensile steel to save weight and was an improvement on the Ardent-class design. She was armed with the standard single twelve pounder gun, five single six pounder guns and two torpedo tubes of the time and carried a complement of 63 officers and men. She served in the Mediterranean for a time before returning to home waters. She survived World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

to be sold in 1921.