Forth Vale GN 52
| Built | 1918 J. Fullerton & Co Ltd, Paisley as "Richard Heaver" (Steel) |
| Yard No | 258 |
| Owner at New | Admiralty (Ad. No. 3771) |
| ID no | 144331 |
| Launch Date | 1918 |
| Completed | 07.10.1918 as a fishing vessel. |
| Gross Tons | 203 |
| Nett Tons | 88 |
| Engine | 73 hp T.3-cyl Fleming & Ferguson Ltd, Paisley |
| Length | 115.6ft |
| Breadth | 22.1ft |
| Depth | 12.1ft |
| Owners | |
| 12.05.1920 | Registered at London LO 354 |
| 05.1920 | Sold to the Mercantile |
| 05.1920 | Owned by Forth Steam Trawling Co Ltd, Edinburgh (Henry O. McAllister Lees manager). |
| 17.05.1920 | London registry closed. |
| 27.05.1920 | Renamed "FORTH VALE" |
| 27.05.1920 | Registered at Granton GN 52 |
| 08.1922 | Forth Steam Trawling Co Ltd in liquidation. |
| 12.02.1923 | Owned by Forth Steam Trawling Co (1922) Ltd, Granton Edinburgh ( Henry O. McAllister Lees manager). |
| 06.1925 | Owned by Dutch Owners. |
| 15.06.1925 | Granton registry closed. |
| 06.1925 | Renamed "AMPLITUDO" |
| 1927 | Lost with all hands in unknown circumstances. |