Inawilliam built 1913 Cochrane & Sons Selby for Hecla steam Fishing Co
04/1915 Requisitioned as a mine sweeper and armed patrol sweeper
05/06/1915 Atlantic off SW Ireland – Sub-Lt Nettleingham RNR steaming towards Cahirmore Signal Station few miles west of Berehaven
Large submarine came to the surface 1 or 2 miles away on port beam Inawilliam now 11 miles W of Mizen Head headed for the U-boat which fired 4 or 5 rounds then a torpedo which just missed
The trawler fired back hit her once or twice as she submerged and escaped
30/05/1917 Atlantic off SW Ireland – Skipper Charles Slapp RNR on patrol
21/05/1917 Mined at 0923 laid by UC 50 Rudolf Seuffer sank rapidly off Bull Rock Light off Berehaven Co Cork 51.14N 10.18W Skipper and 11 ratings lost
| Surname | Forenames | Age at Death | Date of Death | Rank | Boat |
| CARTER | Ernest | 21/05/1917 | Deck Hand | Inawilliam | |
| DAWN | John H | 21/05/1917 | Trimmer | Inawilliam | |
| DENNEHY | John | 21/05/1917 | Deck Hand | Inawilliam | |
| FAHY | John | 21/05/1917 | Deck Hand | Inawilliam | |
| GARIOCH | John | 21/05/1917 | Engineman | Inawilliam | |
| HOGAN | Michael | 21/05/1917 | Trimmer | Inawilliam | |
| KELLY | Christopher | 21/05/1917 | Seaman | Inawilliam | |
| RITCHIE | James H | 21/05/1917 | Trimmer | Inawilliam | |
| RUSSELL | William C | 21/05/1917 | Signalman | Inawilliam | |
| SHIMMIN | William H | 21/05/1917 | 2nd Hand | Inawilliam | |
| SLAPP | Charles | 21/05/1917 | Skipper | Inawilliam | |
| CLAYTON | Albert E W | 21/05/1917 | Engineman | Inawilliam |
Her Details are
- Official Number 134784
- Yard Number 556
- Admiralty Number 2658
- Armament 1-12pdr
- GT 337 NT 134
- Dimensions 140 x 24.1 x 12.5
- Quarter deck 78 Foc’sle 20
30/05/1917 Mined near Bull Light off Berehaven whilst in Admiralty Service