 HMTGeorge Bligh in later use as fisheries research vessel | |
| Class overview | |
|---|---|
| Name | Mersey class |
| Builders |
|
| Operators |
|
| In service | 1916–1946 (Royal Navy) |
| Planned | 156[1] |
| Completed | 105 standard and 7 non-standard[1] |
| Cancelled | 44[1] |
| General characteristics (standard build) | |
| Type | Admiralty trawler |
| Tonnage | 330 GRT |
| Displacement | 438 tons standard[2] |
| Length | 148 ft (45 m)[2] |
| Beam | 23 ft 9 in (7.24 m) |
| Draught | 13 ft (4.0 m) |
| Installed power | 87 nhp 600 ihp (450 kW) |
| Propulsion | 1 × 3 cyl. triple-expansion engine, single shaft, 1 screw, 1 boiler[3] |
| Speed | 11knots (20 km/h; 13 mph) maximum |
| Complement | 15–20 men[2] |
| Armament | Varied depending on vessel. |
| Notes | Fuel: Coal 184 t: |
TheMersey class was a class ofAdmiraltynaval trawlers built for theRoyal Navy (or other government institutions) prior to World War II.[2] Admiralty meant they were built for military service as opposed to conversions of existing boats. The majority of the vessels were built to a standard design but a few included in the class were built differently.
Some were completed as fishing vessels rather than for military service. Many went on to be used in various roles during World War II.
The Mersey-class trawlers were purpose-built to a standard Admiralty design intended for patrol, anti-submarine and minesweeping roles. HMTJohn Quilliam, delivered in June 1917, was the first of the standard completions.
Propulsion was a three cylindertriple expansion steam engine, powered from a single boiler, and delivering nominal 87 horsepower (600 indicated horsepower)
The smallest of the non-standard ships measured 36.8 metres (120 ft 9 in) in length with a 6.71 m (22 ft 0 in)beam.
For the Mersey-class the HMT prefix meant "His Majesty’s Trawler" but HMT was also used for vessels taken into Sea Transport Service as transports ("Hired Military Transport", though often referred to as “His Majesty’s Troopship”) and His Majesty’s Tug,.[4]
| Name | Admiralty number | Launch date | Shipbuilder | Notes | Fate |
|---|---|---|---|---|---|
| HMT Alexander Hills | 3549 | 22 May 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1xQF 12-pounder 12 cwt naval gun Crew: 15, up to 18 with wireless. RenamedMoy September 1920. | Sold January 1946, renamedCoral Island 1947. |
| HMTAlexander Macbeth | 4241 | 14 July 1919 | Cochrane | Completed as fishing vessel. | Sold 1919, renamedJohn W. Johnson. |
| HMTAndrew Jewer | 3844 | 4 December 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun Crew: 15, up to 18 with wireless. Gunnery tender. RenamedNith September 1920,Excellent June 1922. | Sold 1946, renamedMalvern. |
| HMTAndrew King | 3545 | 19 April 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Hydrophone vessel, then minesweeper. RenamedOuse September 1920. | Mined 20 February 1941 off Tobruk. |
| HMTBenjamin Hawkins | 3858 | 7 February 1920 | Goole SB | Completed as fishing vessel. | Sold 17 October 1919. Delivered February 1920, namedFrobisher. Purchased June 1933 asboom defence vessel, renamedFastnet. |
| HMTCharles Adair | 3551 | 7 June 1917 | Cochrane | Armament: 1 × QF 12-per 12 cwt gun. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1923, renamedSleaford 1924. Served as FrenchSaint Benoit in WWII |
| HMTCharles Hammond | 3830 | 26 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun. Crew: 15, up to 18 with wireless. | Sunk 2 November 1918 in collision with destroyerHMSMarksman off Kirkcaldy. |
| HMTChristopher Dixon | 3563 | 4 September 1917 | Cochrane | To Irish Government 1922, same name. Served asLord Gainford in WWII. | |
| HMTDaniel Fearall | 3571 | 2 November 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun, 1x Depth-charge thrower and mechanical minesweeping gear: Crew: 15, up to 18 with wireless. Training ship. RenamedStour September 1920,Pembroke September 1922,Stour 1939. | Sold July 1946, renamedStoresse 1947. |
| HMTDaniel Mcpherson | 4242 | 16 August 1919 | Cochrane | Completed as fishing vessel | Sold 1919, renamedLord Halifax. |
| HMTDaniel Munro | 4239 | 20 June 1919 | Cochrane | Sold 1919, renamedEstrella do Norte and served as such in WWII. | |
| HMTDegara Lerosa | 4237 | 6 June 1919 | Cochrane | Sold 1919, renamedJames Johnson. Served as GreekAxios in WWII. | |
| HMTEdward Druce | 3736 | 30 July 1918 | Goole SB | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1920, renamedGirard and served as such in WWII. |
| HMTEdward Mcguire | 4251 | 17 May 1919 | Cochrane | Completed as fishing vessel. | Sold 1920, renamedCape St. Vincent. Served asKorowa (RAN) in WWII. |
| HMTEdward Williams | 3547 | 8 May 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-pdr 12 cwt gun, 1x Depth-charge thrower and mechanical minesweeping gear: Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1922, renamedCape Trafalgar 1923 and served as such in WWII. |
| HMTFraser Eaves | 3567 | 2 October 1917 | Cochrane | 138 × 23 × 13ft. Armament: × 4 in, 1 × 12-pdr AA, 1 × 7.5 in BT. Crew: 15, up to 18 with wireless. RenamedDoon September 1920. | Sold 1946, renamedDonesse. |
| HMTGeorge Andrew | 3556 | 23 Jul 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr AA. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1921, renamedLord Astor. Served asCranefly in WWII. |
| HMTGeorge Bligh | 3542 | 24 February 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr, 1 × 7.5 in BT. Crew: 15, up to 18 with wireless. | Sold 1921, same name. Became fisheries research vessel. Served in WWII. |
| HMTGeorge Brown | 3548 | 10 May 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun. Crew: 15, up to 18 with wireless. RenamedWilliam Dogherty December 1919. | Sold 1922, renamedRosedale Wyke. |
| HMTGeorge Fenwick | 3568 | 10 January 1918 | Cochrane | Sold 1923, renamedCape Otway. Served as GreekStrymon in WWII | |
| HMTGeorge Westphall | 3575 | 7 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun. Crew: 15, up to 18 with wireless. | Sold 1921, renamedEstelle Yvonne. Lost 1923. |
| HMTHenry Cramwell | 3705 | 24 December 1918 | Lobnitz | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper | Sold 1922 to Spain, renamedXauen. |
| HMTHenry Ford | 3569 | 18 October 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. RenamedBoadicea II February 1919,Henry Ford February 1920. | Sold 1921, renamedDuperre and served as such for France in WWII. |
| HMTHenry Lancaster | 4231 | 8 Apr 1919 | Cochrane | 138 × 23 × 13ft. Armament: usually 1 × 12-pdr & BT. Crew: 15, up to 18 with wireless. Marker buoy vessel | Sold August 1921, same name. Served asLongtow in WWII. |
| HMTHenry Marsh | 4253 | 31 May 1919 | Cochrane | Completed as fishing vessel. | Sold 1920, renamedSpringbok. |
| HMTIsaac Chant | 3704 | 1 October 1918 | Lobnitz | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. RenamedColne September 1920. | Sold 1949. |
| HMTJames Adams | 3555 | 7 July 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr AA, 1 × 7.5 in BT. Crew: 15, up to 18 with wireless. | Sold 1920 renamedPilote 5 and served as such for Belgium in WWII. |
| HMTJames Buchanan | 3565 | 18 September 1917 | Cochrane | Armament: 1 × 12-pdr AA. Crew: 15, up to 18 with wireless. Hydrophone vessel, then minesweeper. | Sold 1922, renamedStoneferry. Served asForce in WWII. |
| HMTJames Caton | 3703 | 26 August 1918 | Lobnitz | Armament: 1 × 12-pdr AA. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1921, renamedEmilie Pierre. Served as FrenchSt. Pierre d'Alcantara in WWII |
| HMTJames Hayes | 3859 | 27 June 1919 | Goole SB | 138 × 23 × 13ft. Completed as fishing vessel. | Sold 1919, renamedViscount Grey. Stranded 11 February 1920, total loss. |
| HMTJames Hulbert | 3799 | 9 Sep 1919 | Lobnitz | Sold 1919, renamedM. J. Reid. Served asJean Frederic in WWII. | |
| HMTJames Jones | 3842 | 9 Nov 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun:. Crew: 15, up to 18 with wireless. RenamedCherwell September 1920. | Sold 1948 with same name. |
| HMTJames Ludford | 4232 | 1 May 1919 | Cochrane | 138 × 23 × 13ft. Armament: usually 1 × 12-pdr & BT. Crew: 15, up to 18 with wireless. Served as marker buoy vessel | Mined 14 December 1939 off the Tyne. |
| HMTJames Mansell | 4238 | 26 June 1919 | Cochrane | Completed as fishing vessel. | Sold 1919, renamedSnorri Sturluson,James Mansell 1922. |
| HMTJames Mcdonald | 4244 | 9 September 1919 | Cochrane | Sold 1919, renamedGrand Fleet. Served asBarbara Robertson in WWII. | |
| HMTJames Mclaughlin | 4250 | 1 May 1919 | Cochrane | Sold 1919, renamedGeneral Birdwood and served as such in WWII. | |
| HMTJames Wright | 3576 | 15 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun:. Crew: 15, up to 18 with wireless. | Sold 1921, renamedLord Ancaster. Served asLoch Moidart in WWII. |
| HMTJames Young | 4235 | 8 May 1919 | Cochrane | Completed as fishing vessel. | Sold 1919, same name. |
| HMTJeremiah Lewis | 4234 | 25 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: usually 1 × 12-pdr & BT. Crew: 15, up to 18 with wireless. | Sold 1920, renamedField Marshal Robertson. |
| HMTJohn Cormack | 3562 | 4 September 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun:. Crew: 15, up to 18 with wireless. | Sold 1922, renamedLord Pirrie. Served asChiltern in WWII. |
| HMTJohn Cottrell | 4463 | 1 November 1919 | Goole SB | Completed as fishing vessel. | Sold 1919, renamedSt. Endellion. Served asBlighty in WWII. |
| HMTJohn Dunn | 3741 | 27 February 1918 | Ferguson | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun:. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1923, same name. Served asFlorence Brierley in WWII. |
| HMTJohn Dutton | 3739 | 17 January 1918 | Ferguson | 138 × 23 × 13ft. Armament: 1 × QF 12-per 12 cwt gun:. Crew: 15, up to 18 with wireless. | Sold 1921, later renamedKarlsefni. |
| HMTJohn Ebbs | 3566 | 2 October 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr, 1 × 3.5 in BT. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1920, renamedPilote 4. Served asBelgian shipA4 in WWII. |
| HMTJohn Edmund | 3738 | 22 October 1918 | Goole SB | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. RenamedFoyle 9.1920. Loaned September 1921 to June 1934 to South African Navy asSonneblom. | Sold 1946, renamedCramond Island. |
| HMTJohn Felton | 3570 | 1 Nov 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr AA, 1-6in BT. Crew: 15, up to 18 with wireless. | Sold 1920, same name. |
| HMTJohn Highland | 3797 | 23 September 1918 | Ferguson | 138 × x 23 × 13 ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1920, renamedOcean Ensign. |
| HMTJohn Jacobs | 3833 | 15 April 1918 | Cochrane | Sold 1922, renamedCastlenau and served as such in WWII. | |
| HMTJohn Jefferson | 3834 | 23 April 1918 | Cochrane | Hydrophone vessel. | Sold 1920, renamedSt. Amant. Served asLady Enid in WWII. |
| HMTJohn Johnson | 3832 | 19 April 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1922, renamedCloughton Wyke and served as such in WWII. |
| HMTJohn Mann | 4245 | 6 September 1919 | Cochrane | Completed as fishing vessel. | Sold 1920, renamedEarl Haig. Purchased 1933, renamedBarnet. Sold 1947. In 1950 enployed by salvors ofHMS Warspite off Penzance.[5] |
| HMTJohn Pasco | 3544 | 19 April 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Escort. | Sold 1922, renamedArin Bjorn Hersir. |
| HMTJohn Quilliam | 3541 | 12 February 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1921. Converted to Danish research vesselDana II |
| HMTJohn Welstead | 3573 | 15 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1922, renamedLord Harewood. Served asMyrland in WWII. |
| HMTJohn Yule | 3543 | 24 March 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1921 renamedNotre Dame de Lorette. |
| HMTJonathan Clarke | 4465 | 24 March 1920 | Goole SB | Completed as fishing vessel. | Sold 1920, renamedSt. Keverne. |
| HMTJonathan Collins | 4464 | 26 November 1919 | Goole SB | Sold 1919, renamedSt. Minver and served as such in WWII. | |
| HMTLangdon Mackennon | 4243 | 21 October 1919 | Cochrane | Sold 1919, renamedDouglas H. Smith. Lost 1921. | |
| HMTLewis Mackenzie | 4240 | 26 June 1919 | Cochrane | Sold 1919, renamedFlorence Johnson. | |
| HMTLewis Reeves | 3553 | 23 June 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr AA, 1 × 7.5 in BT. Crew: 15, up to 18 with wireless. | Sold 1922, renamedLord Hawke. Lost 1922. |
| HMTLewis Roatley | 3554 | 7 Jul 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr AA, 1 × 7.5 in BT. Crew: 15, up to 18 with wireless. Minesweeper | Sold 1922 renamed STALWART. |
| HMTMichael Clements | 3561 | 21 Aug 1917 | Cochrane | Sunk 8.8-18 in collision off St. Catherines Point. | |
| HMTMichael Mcdonald | 4252 | 17 May 1919 | Cochrane | Completed as fishing vessel. | Sold 1919, renamedKanuck. |
| HMTNicholas Couteur | 4236 | 20 May 1919 | Cochrane | Sold 1919, renamedMary A. Johnson. Lost November 1920. | |
| HMTNicholas Dean | 3740 | 11 March 1918 | Ferguson | Hydrophone vessel. | Sold 1921, renamedNotre Dame de France. |
| HMTPatrick Mitchell | 4248 | 16 April 1919 | Cochrane | 138 × 23 × 13ft. Completed as fishing vessel. | Sold 1919, renamedKelvin. |
| HMTPeter Hoffman | 3798 | 8 July 1919 | Lobnitz | Sold 1919, renamedK. M. Hardy. Served as FrenchImbrin in WWII. | |
| HMTPeter Magee | 4249 | 1 May 1919 | Cochrane | Sold 1919, renamedLord Ernle. | |
| HMTRichard Bulkeley | 3560 | 21 August 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Mined 12 July 1919 in the North Sea while on loan to US Navy. |
| HMTRichard Colliver | 3701 | 26 February 1918 | Lobnitz | Sold 1922, renamedLaurette. | |
| HMTRichard Jewell | 3836 | 6 August 1918 | Cochrane | Sold 1922 renamed,Lord Knaresborough. Served asFairway in WWII. | |
| HMTRobert Barton | 3559 | 28 August 1917 | Cochrane | Minesweeper. | Sold 1922 renamed HAY BURNWYKE. Served as HAYBURN WYKE in WWII. |
| HMTRobert Bookless | 3557 | 23 July 1917 | Cochrane | 138 × x 23 × 13 ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1921 renamed GRIZ NEZ. Served as German M.4005 in WWII. |
| HMTRobert Cahill | 4468 | 13 April 1921 | Goole SB | Completed as fishing vessel. | Sold 1921, renamedPierre Andre and served as such in WWII. |
| HMTRobert Double | 3735 | 5 June 1918 | Goole SB | Hydrophone vessel. | Sold 1922, same name, renamedWolborough 1925. |
| HMTRobert Drummond | 3742 | 4 May 1918 | Ferguson | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1922, same name, renamedSalmonby 1924. Lost 23 March 1926. |
| HMTRobert Finlay | 3857 | 23 May 1919 | Goole SB | Completed as fishing vessel. | Sold 1919, renamedViscount Allenby. |
| HMTRobert Murray | 4256 | 30 June 1919 | Cochrane | Sold 1923, same name. Served asNorthlyn in WWII. | |
| HMTSamuel Dowden | 3564 | 18 September 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. 1 × 3.5 in BT. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1922, renamedRoyal Regiment. Served asSea Mist in WWII. |
| HMTSamuel Jameson | 3839 | 10 October 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. RenamedEttrick September 1920. | Sold 1926, renamedLoughrigg. Served asPhyllisia in WWII. |
| HMTSamuel Martin | 4255 | 28 June 1919 | Cochrane | Completed as fishing vessel. | Sold 1920, renamedField Marshal Plumer. |
| HMTSimeon Moon | 4254 | 31 May 1919 | Cochrane | Sold 1920, renamedGeneral Rawlinson. | |
| HMTThomas Atkinson | 3546 | 8 May 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1923, renamedCavendish. Served asErith in WWII. |
| HMTThomas Bailey | 3558 | 4 August 1917 | Cochrane | Minesweeper. | Sold 1922, renamedPamxon. |
| HMTThomas Cornwall | 3702 | 10 June 1918 | Lobnitz | 138 × 23 × 13ft. Armament: 1 × 12-pdr, 1 × 3.5 in BT. Crew: 15, up to 18 with wireless. | Sunk 29 October 1918 in collision off Flamborough Head. |
| HMTThomas Cruize | 3706 | 30 January 1919 | Lobnitz | Completed as fishing vessel. | Sold 1919, renamedCelerina. Lost 11 December 1922. |
| HMTThomas Jago | 3835 | 31 July 1918 | Cochrane | 138 × 23 × 13ft. Armament: × 4 in. Crew: 15, up to 18 with wireless. Escort. | Sold 1922, renamedSt. Valery. Served asLady Eleanor in WWII. |
| HMTThomas Jarvis | 3840 | 24 October 1918 | Cochrane | 138 × 23 × 13ft. Armament: × 4 in. Crew: 15, up to 18 with wireless. Special Service Vessel. RenamedExe September 1920. | Sold 1928, renamedJan Volders. |
| HMTThomas Johns | 3837 | 3 September 1918 | Cochrane | 138 × 23 × 13ft. Armament: × 4 in. Crew: 15, up to 18 with wireless. RenamedEden September 1920, to South African Navy 1921–1934, renamedImmortelle. | Sold 1945. |
| HMTThomas Maloney | 4247 | 14 June 1919 | Cochrane | Completed as fishing vessel. | Sold 1919, renamedSt. Neots. Served asAdam in WWII. |
| HMTThomas Matthews | 4246 | 6 October 1919 | Cochrane | Sold 1919, renamedEarl Beatty. | |
| HMTThomas Thresher | 3572 | 9 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1922, same name. Served asSyrian in WWII. |
| HMTThomas Whipple | 3574 | 4 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1922, renamedLord Lascelles. |
| HMTWilliam Chatwood | 4467 | 24 February 1921 | Goole SB | 138 × 23 × 13ft. Completed as fishing vessel. | Sold 1921, renamedBlanc Nez. |
| HMTWilliam Courtney | 4466 | 2 February 1921 | Goole SB | Completed as fishing vessel. | Sold 1921, renamedTernoise. |
| HMTWilliam Doak | 3737 | 23 September 1918 | Goole SB | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Hydrophone vessel. | Sold 1922 to Spain, renamedArcila. |
| HMTWilliam Forbes | 3856 | 25 May 1919 | Goole SB | 138 × 23 × 13ft. Completed as fishing vessel. | Sold 1919, renamedSyrian. |
| HMTWilliam Honnor | 3796 | 26 August 1918 | Ferguson | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Escort. | Sold 1922, renamedGrimurkamban. |
| HMTWilliam Inwood | 3841 | 30 October 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Escort. RenamedBlackwater September 1920. | Sold 1946, renamedSpleis. |
| HMTWilliam Jackson | 3831 | 29 February 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. | Sold 1921, renamedLord Byng. Served asEvelyn Rose in WWII. |
| HMTWilliam Johnson | 3843 | 22 November 1918 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Loaned to US Navy 1919. | Sold 1921, renamedLord Birkenhead. |
| HMTWilliam Jones | 3838 | 8 September 1918 | Cochrane | Minesweeper. RenamedBoyne September 1920. | Sold 1946, renamedNypuberg. |
| HMTWilliam Leech | 4233 | 12 February 1919 | Cochrane | 138 × 23 × 13ft. Armament: usually 1 × 12-pdr & BT. Crew: 15, up to 18 with wireless. RenamedExcellent February 1919. | Sold 1922, renamedWilliam Leech. Served as FrenchExcellent in WWII. |
| HMTWilliam Ram | 3550 | 7 June 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Escort. | Sold 1921, renamedLord Carson. Served asWelbeck in WWII. |
| HMTWilliam Rivers | 3552 | 9 June 1917 | Cochrane | 138 × 23 × 13ft. Armament: 1 × 12-pdr. Crew: 15, up to 18 with wireless. Minesweeper. | Sold 1921, renamedMont Cassel and served as such for France in WWII |
| Name | Admiralty number | Launch date | Shipbuilder | Notes | Fate |
|---|---|---|---|---|---|
| All: From 248-324 grt,Length from 117-125 ft Beam and draught 22 ft x 23 ft. Approx. TE 480ihp, 10.5 kts. Armament: 1xQF 12-pounder 12 cwt naval gun, 1x Depth-charge thrower and mechanical minesweeping gear: Crew: 15, up to 18 with wireless. | |||||
| HMTAnthony Aslett | 3579 | 22 February 1917 | Cochrane | Minesweeper. RenamedRother September 1920. | Sold 1922 to Spain, renamedUad Quert. |
| HMTCharles Astie | 3578 | 25 January 1917 | Cochrane | Mined 26 June 1917 off Lough Swilly. | |
| HMTCornelius Buckley | 3581 | 24 February 1917 | Cochrane | Minesweeper. | Sold 1922, renamedAria. |
| HMTJohn Appleby (ex-Corinthia) | 3612 | 30 January 1917 | Cook, Welton & Gemmell | Hydrophone vessel. | Sold 1923, renamedLois and served as such in WWII. |
| HMTJohn Arthur (ex-Sannyrion) | 3613 | 10 February 1917 | Cook, Welton & Gemmell | Sold 1922, renamedGladys and served as such in WWII. | |
| HMTWilliam Abrahams | 3580 | 24 February 1917 | Cochrane | Minesweeper. | Sold 1922, renamedSantini. |
| HMTWilliam Westenburgh | 3577 | 25 January 1917 | Cochrane | Sold 1921, renamedLord Talbot. Served asStar of the Realm in WWII. |
A further 44 vessels were ordered, but were cancelled before delivery.
based on "British Warships 1914-1919" by F J Dittmar & J J Colledge
