Courtland Built 1904 Cook Welton & Gemmell Hull for Alec L. Black Grimsby
29/06/1908 Sold to Naam Ven Stoomv Grotius Ijmuiden Holland renamed Grotius
1910 Bought by Christian M. Evensen Thorshaven Færoe Islands renamed Pauline
12/03/1915 Sold to the Earl Steam Fishing Co Ltd Grimsby renamed Earl Granard Registered as GY 449
04/1915 Requisitioned as a minesweeper
1919 Returned to commercial fishing
24/09/1915 Bought by the Rushworth Steam Fishing Co Ltd Grimsby
16/03/1918 Sold to Isaac Bunch Grimsby
22/12/1923 Bought by Great Central Co-op Eng & Repair Co Ltd Grimsby
15/06/1928 Sold to Harold Bacon Grimsby
26/09/1930 Bought by T. C. & F. Moss Ltd Grimsby
01/04/1931 Renamed Castleton
11/1939 Requisitioned as an auxiliary patrol vessel
01/1940 Returned to commercial fishing
28/06/1940 While on patrol she was sunk by a German Luftwaffe Do17Z aircraft east of the Orkney Islands at 09.30 hours
10 crew were lost. Note: Castleton was previously presumed sunk by U-102, which is not true
The vessel was off the Orkney Islands at the time of the attack
| Surname | Forenames | Age at Death | Date of Death | Rank | Boat |
| DILLON | CHARLES JAMES | 45 | 28/06/1940 | Deck Hand | Castleton |
| SIBLEY | WALTER | 43 | 28/06/1940 | Skipper | Castleton |
| STEWART | WILLIAM | 53 | 28/06/1940 | Chief Engineer | Castleton |
| HUBBARD | THOMAS GEORGE | 50 | 28/06/1940 | Third Hand | Castleton |
| SQUIRE | JOHN THOMAS | 37 | 28/06/1940 | Deck Hand | Castleton |
| COOK | HENRY GEORGE | 56 | 28/06/1940 | Second Engineer | Castleton |
| RYAN | JOHN DENNIS | 40 | 28/06/1940 | Sailor | Castleton |
| WEBB | JOHN ALLEN | 45 | 28/06/1940 | Mate | Castleton |
| OSBORNE | LESLIE ALBERT | 19 | 28/06/1940 | Trimmer | Castleton |
| WHITE | ALEXANDER CAMPBELL MCLINTOCK | 64 | 28/06/1940 | Cook | Castleton |
Her Details are
- Official Number 118938
- Yard Number 61
- Admiralty Number FY 2653
- GT 211 NT 76
- Dimensions 115.4 x 21.6 x 11.5
- Quarter deck 58 Foc’sle 19
- Engines Amos & Smith 65 NHP 10 knots
Sunk by Aircraft 28/06/1940