Agile built 17/01/1907 by Cook Welton & Gemmell Beverley for W Grant
27/12/1914 Requisitioned as a minesweeper Harwich-based
1915 Renamed St. Vincent II
Skipper George Rushton RNR Division of seven trawlers clearing field laid east of Sunk LV completed one sweep and division reversed course preparing to stream wires
Mined at 1020 laid by UC 11 Benno von Ditfurth sank rapidly after large explosion off Sunk Head LV off Harwich
3 ratings lost
| Surname | Forenames | Age at Death | Date of Death | Rank | Boat |
| CREAR | Ernest G | 42 | 27/04/1917 | Engineman | Agile |
| JEFFERY | Charles G | 23 | 27/04/1917 | Deck Hand | Agile |
| RAMPLING | Ambrose H | 41 | 27/04/1917 | Engineman | Agile |
| MUMMERY | Leonard R | 36 | 27/04/1917 | Deck Hand | Agile |
Her details are
- Official Number 125056
- Yard number 132
- Admiralty number FY 697
- GT 246 NT 100
- Dimensions 125 x 22 x 11.8
- Quarter Deck 68 Foc’sle 19
- Engines by CD Holmes 3 cylinders of 12½, 22 & 35 inches with 24 inch stroke 70 HP 10.5 Knots
27/04/1917 Mined off Sunk Head Light Vessel 51.54N 01.20E off Harwich whilst in Admirlaty Service