Longset built 1914 Cochrane & Sons Selby for Lindsey Steam Fishing 1915 Requisitioned
02/1915 Renamed Leandros
06/02/1917 Bristol Channel – Auxiliary Patrol parent ship based at Swansea Mined at 1100 laid by UC 46 Friedrich Moecke sank off Nells Point near Barry
Skipper and 7 ratings lost 7 survivors Lt John Wilson RNR who died on the 20 May 1916 is listed as serving on Hired Trawler Longset
| Surname | Forenames | Age at Death | Date of Death | Rank | Boat |
| WILSON | John | Unknown | 20/05/1916 | Lieutenant | Longset |
| BOWDEN | George | Unknown | 06/02/1917 | Deck Hand | Longset |
| BUSH | Ronald | Unknown | 06/02/1917 | Ordinary Telegraphist | Longset |
| HAGUE | William | Unknown | 06/02/1917 | Deck Hand | Longset |
| KINRADE | Alfred | Unknown | 06/02/1917 | Seaman | Longset |
| MUIR | Thomas F | Unknown | 06/02/1917 | Ty/Lieutenant | Longset |
| POOLE | Walter F W | Unknown | 06/02/1917 | Deck Hand | Longset |
| SANDERS | Herbert H | Unknown | 06/02/1917 | Trimmer | Longset |
| BULLOCK | William E | Unknown | 06/02/1917 | Engineman | Longset |
Her Details are
- Official Number 137013
- Yard Number 613
- Admiralty Number FY 1503
- Armament 1-6pdr
- GT 275 NT 147
- Quarter deck 72 Foc’sle 21
- Dimensions 130.2 x 22 x 12.6
06/02/1917 Mined off Wells Point Bristol Channel whilst in Admiralty Service