March 1942. Admiralty W class The Admiralty W class comprised 21 vessels, all ordered in December 1916 under the 10th War Programme, although the two ships ordered from Yarrow were cancelled in April 1917 and replaced by the orders for two Yarrow S class (Tomahawk and Torch). The Admiralty W-class ships were a follow on from the Admiralty V class, with minimal changes, primarily in that the triple torpedo tube mounting was now ready and all these vessels shipped two of these mountings from new. They also had a taller mainmast. Ships Voyager – built by Alexander Stephen & Sons, Linthouse, laid down 17 May 1917, launched 8 May 1918, completed 24 June 1918, transferred to Royal Australian Navy in October 1933, bombed by Japanese aircraft and beached Timor 23 September 1942. Wakeful – built by John Brown & Company, Clydebank, laid down 17 January 1917, launched 6 October 1917, completed 16 November 1917, torpedoed and sunk by German E-boat S30 off Nieuwpoort 29 May 1940. Walker – built by William Denny & Brothers Limited, Dumbarton, laid down 26 March 1917, launched 29 November 1917, completed 2 February 1918, sold for breaking up 15 March 1946. Walpole – built by William Doxford & Sons Ltd, Pallion, laid down May 1917, launched 12 February 1918, completed 7 August 1918, mined in North Sea 6 January 1945 and written off as constructive total loss, sold for breaking up 8 February 1945. Walrus – built by Fairfield Shipbuilding & Engineering Company, Govan, laid down 1917, launched 27 December 1917, completed 8 March 1918, stranded in Scarborough North Bay 12 February 1938 and written off as constructive total loss, sold for breaking up 5 March 1938. Warwick – built by Hawthorn Leslie & Company, Hebburn, laid down 10 March 1917, launched 28 December 1917, completed 18 March 1918, torpedoed and sunk by off Trevose Head 20 February 1944. Watchman – built by John Brown, laid down 17 January 1917, launched 2 November 1917, completed 26 January 1918, sold for breaking up 23 July 1945. Waterhen – built by Palmers Shipbuilding & Iron Company, Jarrow, laid down July 1917, launched 26 March 1918, completed 17 April 1918, transferred to Royal Australian Navy in October 1933, bombed and sunk off of Libya by German and Italian aircraft 30 June 1941. Wessex – built by Hawthorn Leslie, laid down 23 May 1917, launched 12 March 1918, completed