ST Sea Alarm was a 263-ton tug which was built as Empire Ash in 1941 for the British Ministry of War Transport (MoWT).

Empire Ash was built by John Crown & Sons Ltd, Sunderland as yard number 201.

[1] On 15 May 1946, Empire Ace was sold for £18,750 to Clyde Shipping Co. Ltd, Glasgow and renamed Flying Fulmar.

W. Ward, Briton Ferry, for scrapping, but was resold the following month to the Welsh Industrial and Maritime Museum in Cardiff.

[4] Questions were asked by the Select committee on Welsh Affairs about the scrapping of the tug as there was public outcry at the time.