| Name: | EL OSO |
| Type: | Tanker |
| Launched: | 07/07/1921 |
| Completed: | 09/1921 |
| Builder: | Armstrong, Whitworth & Co Ltd |
| Yard: | Low Walker |
| Yard Number: | 973 |
| Dimensions: | 7267grt, 4405nrt, 440.5 x 57.5 x 34.0ft |
| Engines: | T3cyl (29, 48 & 81 x 54ins), 678nhp |
| Engines by: | Armstrong, Whitworth & Co Ltd, Elswick |
| Propulsion: | 1 x Screw |
| Construction: | Steel |
| Reg Number: | 146105 |
| History: | |
| 13/09/1921 | Lobitos Oilfields Ltd (CT Bowring & Co Ltd), London |
| 11/01/1940 | Sank |
| Comments: | 11/01/1940: Mined & sunk 6 miles from the Bar Light Vessel |
| On a voyage from Lobitos to Ellesmere Port with a cargo of crude oil |
Above photo is courtesy of Clive Ketley