more than 1000 BRT:
| Name | Launched // Comm. | Builder | Tonnage, BRT | Dimensions (LppxB), m | Speed, kts | Machinery, Fuel, t | Armament | Fate |
| Bayano (MI20) | 1917 // 12.1917 | Stephen, Linthouse | 6788 | 129.7x16.5 | 14.5 | 2VTE | 4 - 152/, 2 - 102/, 2 DCT | stricken 3.1919 |
| Bostonian (ex-Cambrian) (PA1, MI59) | 10.10.1896 // 6.1917 | Gray, Hartlepool | 5626 | 137.2x15.0 | 12 | 1VTE | 3 - 152/, 2 DCT | sunk 10.10.1917 |
| Camito (MI21) | 17.4.1915 // 2.1918 | Stephen, Linthouse | 6611 | 129.9x16.5 | 14 | 2VTE | 4 - 152/, 2 DCT | stricken 3.1919 |
| Carrigan Head (MI22) | 9.3.1901 // 8.1917 | Workman Clark, Belfast | 4201 | 112.9x14.0 | 12.5 | 1VTE | 2 - 152/, 2 - 102/, 2 DCT, as Q-ship 1-102/, 2 - 76 | supply ship 8.1914-4/1916, Q-ship 6.1916-8/1917, stricken 2.1919 |
| Coronado (MI23) | 1.4.1915 // 9.1917 | Workman Clark, Belfast | 6539 | 129.7x16.6 | 14 | 2VTE | 4 - 152/, 2 - 102/, 2 DCT | stricken 3.1919 |
| Discoverer (PA3, MI96, MI53) | 19.10.1913 // 6.1917 | Connell, Scotstoun | 5409 | 125.0x16.0 | 12 | 1VTE | 4 - 152/, 2 DCT | stricken 3.1919 |
| Knight Templar (PA2, MI97, MI54) | 10.10.1905 // 5.1917 | Connell, Scotstoun | 7175 | 143.3x17.7 | 11 | 1VTE | 3 - 152/, 2 DCT | stricken 2.1919 |
| Lepanto (MI45) | 7.9.1915 // 2.1918 | Russell, Glasgow | 6389 | 125.0x16.3 | 10.5 | 1VTE | 2 - 152/, 2 - 102/, 2 DCT | stricken 5.1919 |
| Mechanician (PA5, MI98) | 9.8.1900 // 6.1917 | Workman Clark, Belfast | 9044 | 146.9x17.5 | 13 | 2VTE | 2 - 152/, 2 - 102/, 2 DCT | sunk 20.1.1918 |
| Naneric (ex-Aotea) (MI24) | 15.11.1894 // 12.1917 | Swan Hunter, Wallsend | 5653 | 131.2x14.9 | 12 | 1VTE | 2 - 152/, 2 - 102/, 2 DCT | stricken 3.1919 |
| Quernmore (PA4, MI99) | 9.1898 // 6.1917 | Workman Clark, Belfast | 7302 | 146.3x15.9 | 12.5 | 1VTE | 3 - 152/, 2 DCT | sunk 31.7.1917 |
| Sachem (PA0, MI92) | 22.6.1893 // 5.1917 | Harland & Wolff, Belfast | 5204 | 135.8x14.1 | 13 | 1VTE | 3 - 152/, 2 DCT | stricken 3.1919 |
| Wyncote (ex-Den of Ruthven) (MI27) | 27.5.1907 // 8.1917 | Connell, Scotstoun | 4937 | 121.9x15.9 | 12 | 1VTE | 2 - 152/, 2 - 102/, 2 DCT | stricken 3.1919 |
Project history: merchant vessels taken up in 1917-1918 for convoy protection in the Atlantic. Often also termed as convoy escort ships.
Modernizations: None.
Naval service: Format of date including day/month/year means loss of the vessel. Format of date containing month/year means return to owner or conversion to miscellaneous vessel. Bostonian was sunk 10.10.1917 by German submarine U53 off Start Point. Mechanician was sunk 20.1.1918 by German submarine UB35 off St. Catherine`s Point in the English Channel. Quernmore was sunk 31.7.1917 by German submarine U82 off Tory Island.
Bayano
© Ivan Gogin, 2008-10