Characteristics
The Mersey-class trawlers were purpose-built, standard Admiralty design intended for patrol, ASW and minesweeping roles. HMT ''John Quilliam'', delivered in June 1917, was the first of the standard completions. The smallest of the non-standard ships measured in length with aArmament
* 1x 76/40 Quick Fire 12-pounder naval gun: ** John Edmund, John Highland, John Jacobs, John Johnson, John Pasco, John Quilliam, John Welstead, John Yule, Richard Bulkeley, Richard Colliver, Robert Double, Robert Drummond, Samuel Jameson, Thomas Jarvis, Thomas Johns, Thomas Whipple, William Doak, William Honnor, William Inwood, William Jackson, William Johnson, William Ram * 1x 76/40 Quick Fire 12-pounder naval gun, mechanical minesweeping gear: ** Cornelius Buckley, William Abrahams, Andrew King, George Andrew, Henry Cramwell, Henry Ford, Isaac Chant, James Buchanan, Lewis Roatley, Michael Clements, Robert Barton, Robert Bookless, Thomas Atkinson, Thomas Bailey, Thomas Thresher, William Jones, William Rivers * 2x 76/40 Quick Fire 12-pounder naval gun, mechanical minesweeping gear: ** William Westenburgh * 1x 102/40 MkI/III 4" Quick fire naval gun, 1x 76/40 Quick Fire 12-pounder naval gun, 1x Depth-charge thrower: ** Fraser Eaves * 1x 76/40 Quick Fire 12-pounder naval gun, 1x Depth-charge thrower: ** George Bligh, James Adams, John Ebbs, John Felton, John Jefferson, Lewes Reeves, Nicholas Dean, Samuel Dowden, Thomas Cornwall * 1x 57/40 6-pounder Hotchkiss Mk I naval gun: ** Richard Jewell * 1x 102/40 MkI/III 4" Quick fire naval gun ** Thomas Jago:Ships of standard Mersey class
All vessels listed based on this citation unless stated otherwise. HMT prefix: A public vessel hired by HM Sea Transport Service for service as a Transport (thus Hired Military Transport, though often referred to as “His Majesty’s Troopship”). Also, His Majesty’s Trawler and His Majesty’s Tug, as RN auxiliary support vessels (these might also be hired from the merchant marine).Non-standard vessels
All vessels listed based on this citation unless stated otherwise.Cancelled vessels
A further 44 vessels were ordered, but were cancelled before delivery.References
{{Reflist Ship classes of the Royal Navy Minesweepers Minesweepers of the Royal Navy Research vessels of the United Kingdom Trawlers